RE: Private JVM Heap Size
From: William Biggs [mailto:kc8...@gmail.com] I'm looking at a new web hosting they give Private JVM Heap Size what is the min jvm heap size would you go with ? It depends entirely on your application. Some apps can handle fairly high loads with under 100 Mbytes of heap; others need 2 Gbytes or more for even moderate loads. You're the only person who knows what application you want to deploy; profile the application you want to deploy, under the load you want it to support, then purchase a hosting service with that much heap. - Peter - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Apache Tomcat connection question
On 10.06.2009 06:00, R Ravichandran wrote: Hello, This is an urgent request. Any feedback is really appreciated. I have two web applications (let us call main app., and helper app.) running on Tomcat with an Apache server in from of Tomcat. Both Apache and Tomcat are running on the same host. The first web app on Tomcat is running as ROOT webapp. I have two websites mapped to the single IP address of the host. I want the right application accessed depending on the domain name used. - For example, for the domain name www.app1.com, I want the first tomcat web app reached. - for the domain name www.app2.com I want the second web app reached. Here is the config, I am using: = In Apache httpd.conf file: NameVirtualHost *:80 VirtualHost www.app1.com ServerName www.app1.com ProxyPreserveHost On ProxyPass / http://localhost:8080/app1 ProxyPassReverse / http://localhost:8080/app1 /VirtualHost VirtualHost www.app2.com ServerName www.app2.com ProxyPreserveHost On ProxyPass /totelistm http://localhost:8080/app2 ProxyPassReverse /totelistm http://localhost:8080/app2 /VirtualHost Here is the uriworkmap.properties file for mod_jk worker.list=loadbalancer,status /=loadbalancer /*=loadbalancer /app2=loadbalancer /app2/*=loadbalancer You forgot to tell us, what your actual problem is. Remarks: - I don't understand, why you want to use mod_proxy *and* mod_jk. Choose one of them, not both. - You can use virtual hosts in Tomcat too and put each webapp as the ROOT context in the respective vhost. - When using mod_proxy make sure to use ProxyPreserveHost to forward the original Hosts header, so that Tomcat can choose the correct vhost. Regards, Rainer - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: custom header
Anthony J. Biacco wrote:
Thanx for that, that sets the header for me, but to something static.
Only problem I have is I can't seem to figure out how to set it to the hostname
of the tomcat server, or a tomcat variable (set from the hostname of the server
- i.e. -Dmyjvmroute=`/bin/hostname -s` and then trying to use ${myjvmroute} in
a rule such as:
I must be missing something here. Why would you want it to be dynamic ?
If you have several Tomcat instances as back-ends, then each one has its
own webapps, and each one of these webapps has its own web.xml, which is
where you configure its own urlrewrite filter. So what is the problem
in having it static in there ?
Or, wait, is it purely because you would like to be able to always
distribute the same identical web.xml to all instances ?
That would then become a more generic issue like how do I distribute
the same war-file to several Tomcat instances, but have each instance
pick up something instance-specific to include in its web.xml at load
time ?
Now, in this case I do believe that the urlrewrite filter uses a
separate config file, in which maybe there is a way to specify something
like that. Maybe then just that file would need to be instance-specific ?
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Tomcat 6.0.20 WIndows installer - permission problems when installing servoce
Due to the recently discovered security holes in Tomcat 6 I wanted to update to 6.0.20, downloaded the Windows installer and ran it (after stopping the running service first). During the install process I'm getting an alert box, saying: (X) Failed to install Tomcat6 service. Check your settings and permissions. Ignore and continue anyway (not recommended)? I continued and after copying back my backed up server.xml and my (own) ROOT webapplication I could start the service (net start tomcat6) again. Probably it's just because tomcat6 has not been deinstalled before? Is there a way to upgrade tomcat6 smoothly under Windows? -- Christoph Kukulies - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: tomcat6.0.18 service unable to start
teoh wrote: my tomcat6 service unable to startup with error 0 code. i already tried put msvcr71.dll in tomcat/bin directory. still the same i'm using tomcat 6.0.18 with windows xp 32bits system in console, i able to start up the tomcat, but not on service. any suggestion what i missed out? my process monitor log at http://www.sendspace.com/file/t0tahr Not an answer to the problem, but the link you provide requires a signup, which many people will not want to do. So, basically, we can't see your logfile. Can't you paste the relevant few lines right here ? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: tomcat6.0.18 service unable to start
dude,
found a solution. work for tomcat6 . for those people that facing similar
problem. try download javaservice.exe put it in {tomcat}\bin directory and
install .javaservice.exe -install liferaytomcat
%JDK_HOME%\jre\bin\server\jvm.dll ..
after that, if u trying to start tomcat and it give you error loadlibrary
function failed..
Solution:
copy msvcr71.dll from {jdk1.6}\bin to {tomcat}\bin
tomcat6+jdk6 able to run as service on windows2003
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Re: Tomcat 6.0.20 WIndows installer - permission problems when installing servoce
Christoph Kukulies wrote: Due to the recently discovered security holes in Tomcat 6 I wanted to update to 6.0.20, downloaded the Windows installer and ran it (after stopping the running service first). During the install process I'm getting an alert box, saying: (X) Failed to install Tomcat6 service. Check your settings and permissions. Ignore and continue anyway (not recommended)? I continued and after copying back my backed up server.xml and my (own) ROOT webapplication I could start the service (net start tomcat6) again. Probably it's just because tomcat6 has not been deinstalled before? Probably. Is there a way to upgrade tomcat6 smoothly under Windows? My guess : The error message appears when the Windows service wrapper included in the Tomcat installer tries to install itself as a Windows Service, and itself gets back an error, because this same Service Name already exists in the Windows Registry. In this case however, the error is harmless. You can probably avoid it by running this command from a command window, in the /bin directory of your Tomcat installation, prior to re-installing/upgrading Tomcat : .\tomcat?w.exe //DS//(service name) where (probably) ? should be 6 in your case, and (service name) should be whatever name appears for Tomcat when the service is started and you type net start to list the active services. For a full explanation, have a look here : http://commons.apache.org/daemon/procrun.html Another way to (maybe) avoid this would be as follows : - instead of downloading and installing the installer version of Tomcat for Windows, download the zip version. - unzip this version in the desired Tomcat installation directory - run the bin\install.bat script to install the Tomcat service. Once you have done that, you have essentially the same Tomcat as with the installer. The difference is that you will have a few more files in the \bin subdirectory, allowing you for instance to run Tomcat in a command window, should you want to do that. I'm sure more information is available somewhere, but it quickly gets rather tedious to explain the full background of all this, so I'll skip it for now. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Why do stacktraces from servlets print to stdout, when the other end up in the log4j -log file?
Hi
The Servlet does not propegate the error. This perticular servlet is one we use
for handling unhandled exceptions and displaying an unexpected-error page to
the user.
_
From web.xml
servlet
servlet-nameexceptionHandler/servlet-name
servlet-classse.kgk.webshop.web.general.ExceptionHandlerServlet/servlet-class
init-param
param-nameerrorPageURL/param-name
param-valuegoto.do?forward=error/param-value
/init-param
load-on-startup3/load-on-startup
/servlet
servlet-mapping
servlet-nameexceptionHandler/servlet-name
url-pattern/error/url-pattern
/servlet-mapping
error-page
exception-typejava.lang.Throwable/exception-type
location/error/location
/error-page
The servlet code looks something like this
private static final Log log =
LogFactory.getLog(ExceptionHandlerServlet.class);
protected void doPost(final HttpServletRequest request, final
HttpServletResponse response)
throws ServletException {
try {
Throwable throwable = null;
( Some code to extract the throwable, the requestURI etc... )
log.error(Exception while handling request: + requestURI,
throwable);
request.getRequestDispatcher(errorPageURL).forward(request,
response);
} catch (final Throwable t) {
t.printStackTrace();
}
}
If we run the webapp in Weblogic, both the Exception while handling...
message and the stacktrace gets printed to the log file specified by log4j
If we run exactly the same webapp in Tomcat, the Exception while handling...
message is printed to the log4j -logfile but the stacktrace gets printed to
stdout.log!?!
Note that this only applies to log calls from within this servlet. Then doing
the exact same log4j-call from within one of our filter -classes, everything
works as expected.
I suspect something is different with the servlet load sequence or log settings
when using Tomcat, but what?
Med vänlig hälsning
Andreas Imner
Systemutvecklare
KG Knutsson AB
Autokatalogen
Tel: +46 8 92 34 37
Mobil: +46 70 606 34 37
andreas.im...@kgk.se
-Ursprungligt meddelande-
Från: Christopher Schultz [mailto:ch...@christopherschultz.net]
Skickat: den 9 juni 2009 21:57
Till: Tomcat Users List
Ämne: Re: Why do stacktraces from servlets print to stdout, when the other end
up in the log4j -log file?
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Andreas,
On 6/9/2009 3:31 PM, Imner, Andreas wrote:
My companys web application uses log4j 1.2.8 for logging and have
just recently switched from Weblogic to Tomcat 6.0.18.
Since the we switched to Tomcat, when we do some logging within a
servlet
private static final Log log =
LogFactory.getLog(ExceptionHandlerServlet.class);
log.error(some message, throwable);
The some message -line is written to the file specified by log4j,
but why does the stacktrace gets written to Tomcats stdout.log?
That depends on what else is going on in your servlet. If you let the
exception propagate (by re-throwing it or throwing a new exception) and
nobody else catches it, then Tomcat's request processing thread code
will catch it and log it to stdout.
This is our log4j.properties file
log4j.appender.A1=org.apache.log4j.RollingFileAppender
log4j.appender.A1.MaxBackupIndex=20
log4j.appender.A1.MaxFileSize=10MB
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%d{ABSOLUTE} %-5p %X{ak} [%c{1}]
%m%n
log4j.rootLogger=ERROR, A1
log4j.category.se=INFO
# All System.out.println is redirected to stdout logger, INFO level
log4j.category.stdout=INFO
# All System.err.println (includes Exception.printStackTrace() is redirected
to stderr logger, INFO level
log4j.category.stderr=INFO
The code you provided does not show any use of the stdout category,
but it doesn't really matter because the stdout category does not
actually log to stdout :)
Check to see that your code is not allowing exceptions to propagate.
- -chris
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Re: Why do stacktraces from servlets print to stdout, when the other end up in the log4j -log file?
Imner, Andreas wrote: ... Hi. I do not know the answer, but I am sure that if you would like some answers from the experts on this list, it would not hurt to add some information like : - the version of this Tomcat - where you got it from : is it a standard Tomcat from the Tomcat website, or a packaged distribution from some other source ? - on which platform and OS you are running this - how is this Tomcat started ? (e.g. if under some Unix/Linux, are there some specific things happening re. logfiles/stdout/stderr re-direction in the /etc/init.d/tomcatxx or similar startup scripts ?) - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: setenv.sh - how to set system properties to values containing spaces
Hi Chris,
Thanks for the reply.
Unfortunately I had already tried all of those suggestions - and more
- before posting. I have just retried the three below, to double
check, but unfortunately all with similar results - either looking to
run ssl ssl or ssl'
I am pretty sure that the issue is with the shell, and have been using
the code below to test all sorts of combinations of values for OPTS -
the only way I can get the arg to print on one line is to quote $OPTS
when it is expanded, which obviously will not work if there are any
other options required in CATALINA_OPTS.
Can anyone provide any more suggestions, or am I going to have to
modify catalina.sh - I really do not want to do that, for obvious
reasons.
Again, thanks, in advance, for any help offered,
Bap.
shell_script
#!/bin/sh
OPTS='lkjxdf adf'
function echo_args() {
echo $1
echo $2
}
echo_args $OPTS
/shell_script
Quoting Christopher Schultz ch...@christopherschultz.net:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Bap,
On 6/9/2009 1:06 PM, Bap wrote:
I am trying to set the following system property/value in setenv.sh
com.sun.jndi.ldap.connect.pool.protocol=plain ssl
If I enclose the whole CATALINA_OPTS in single quotes, then the value
looks fine when echoed, but the catalina.out contains Exception in
thread main java.lang.NoClassDefFoundError: ssl
The complete contents of setenv.sh is the single line below.
CATALINA_OPTS='-Xms128m -Xmx256m
-Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl
-Dcom.sun.jndi.ldap.connect.pool.timeout=1'
So, the above echos fine but causes the NoClassDefFoundError?
Try any one of the following, which might work:
CATALINA_OPTS=-Xms128m -Xmx256m
- -Dcom.sun.jndi.ldap.connect.pool.protocol=plain\ ssl
- -Dcom.sun.jndi.ldap.connect.pool.timeout=1
CATALINA_OPTS='-Xms128m -Xmx256m
- -Dcom.sun.jndi.ldap.connect.pool.protocol=plain\ ssl
- -Dcom.sun.jndi.ldap.connect.pool.timeout=1'
CATALINA_OPTS=-Xms128m -Xmx256m
- -Dcom.sun.jndi.ldap.connect.pool.protocol=\plain ssl\
- -Dcom.sun.jndi.ldap.connect.pool.timeout=1
These will probably not work:
CATALINA_OPTS=-Xms128m -Xmx256m
- -Dcom.sun.jndi.ldap.connect.pool.protocol='plain ssl'
- -Dcom.sun.jndi.ldap.connect.pool.timeout=1
CATALINA_OPTS='-Xms128m -Xmx256m
- -Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl
- -Dcom.sun.jndi.ldap.connect.pool.timeout=1'
I suspect that there is some quoting being done in the catalina.sh
script itself which is confusing things. Try looking at the script
itself to see where such quoting is being done, and how you might
defeat it :)
- -chris
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RE: Deploying .war-file in Tomcat 5.5
Thank you all very much for your help. I did now like: $ wget 'http://apache.crihan.fr/dist/tomcat/tomcat-6/v6.0.20/bin/apache-tomcat-6.0.20.tar.gz' $ tar xvzf apache-tomcat-6.0.20.tar.gz $ cp MapFishPrintModule/print-servlet/target/print-servlet-1.1.war apache-tomcat-6.0.20/webapps $ cd apache-tomcat-6.0.20/bin $ ./startup.sh and all the problems are gone :-) Best regards, Kai Caldarale, Charles R wrote: From: Christopher Schultz [mailto:ch...@christopherschultz.net] Subject: Re: Deploying .war-file in Tomcat 5.5 I disagree with Chuck's complaint about this packaging: it actually looks quite sane to me: system-installed stuff goes into /usr/share/tomcat5.5/webapps and probably has XML context files in an appropriate location (don't ask me where!) to load those. /var/lib/tomcat5.5/webapps is the auto-deploy directory that mere mortals get to use (though usually /var is read-only for non-root users, so... wtf?). Your don't ask me where and wtf comments seem to conflict with your looks quite sane to me statement... The Debian file scattering approach makes it extremely difficult for anyone not running that Debian level and that specific Debian repackaged version of Tomcat to provide anything other than general advice. When the repackagers start to muck around in server.xml changing defaults (some of them do), it gets even worse. Ergo, if you want advice from the Tomcat users mailing list, it's best to use a standard Tomcat; otherwise, you will likely need help from a platform-specific forum. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. -- View this message in context: http://www.nabble.com/Deploying-.war-file-in-Tomcat-5.5-tp23886971p23960188.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: setenv.sh - how to set system properties to values containing spaces
Bap wrote: ... Looks very much like the problem from hell, where the number of extra quoting levels depends on the number of times this thing ends up being interpolated. A suggestion, which involves modifying catalina.sh, but maybe with less nefarious effects if it ever gets replaced : - modify catalina.sh such that, in each command-line executing Tomcat and in which $JAVA_OPTS is invoked, you add another $MY_JAVA_OPTS after the $JAVA_OPTS. - then define MY_JAVA_OPTS in setenv.sh, with what you want as additional options, using only 1 level of additional quoting. e.g. exec $_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \ becomes exec $_RUNJAVA $JAVA_OPTS $MY_JAVA_OPTS $CATALINA_OPTS \ and in setenv.sh : MY_JAVA_OPTS=-Dsomeparam=\this and that\ or MY_JAVA_OPTS='-Dsomeparam=this and that' - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
[SECURITY] UPDATED CVE-2008-5515 RequestDispatcher directory traversal vulnerability
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Updated to add additional patches required for 5.5.x and 4.1.x CVE-2008-5515: Apache Tomcat information disclosure vulnerability Severity: Important Vendor: The Apache Software Foundation Versions Affected: Tomcat 4.1.0 to 4.1.39 Tomcat 5.5.0 to 5.5.27 Tomcat 6.0.0 to 6.0.18 The unsupported Tomcat 3.x, 4.0.x and 5.0.x versions may be also affected Description: When using a RequestDispatcher obtained from the Request, the target path was normalised before the query string was removed. A request that included a specially crafted request parameter could be used to access content that would otherwise be protected by a security constraint or by locating it in under the WEB-INF directory. Mitigation: 6.0.x users should upgrade to 6.0.20 or apply this patch: http://svn.apache.org/viewvc?view=revrevision=734734 5.5.x users should upgrade to 5.5.28 when released or apply these patches: http://svn.apache.org/viewvc?view=revrevision=782757 http://svn.apache.org/viewvc?view=revrevision=783291 4.1.x users should upgrade to 4.1.40 when released or apply these patches: http://svn.apache.org/viewvc?view=revrevision=782763 http://svn.apache.org/viewvc?view=revrevision=783292 Example: For a page that contains: % request.getRequestDispatcher( bar.jsp?somepar=somevalpar= + request.getParameter( blah ) ).forward( request, response ); % an attacker can use: http://host/page.jsp?blah=/../WEB-INF/web.xml Credit: This issue was discovered by Iida Minehiko, Fujitsu Limited References: http://tomcat.apache.org/security.html -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkovmMwACgkQb7IeiTPGAkNPigCcDBEKxwuBoXnvixbqoqM8CIaN VKYAni4kHySG2JmbYi1hz4xAGpgm36Gr =7FT9 -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
How to use a gzip javascript file in a webapp running under tomcat
Hi There, Im wondering if its possible to referr a javascript file something like script ... src ='scriptfile.js.gz' in a html page where the script file is located in one of the tomcat webapps? if not how to send a gzip javascript file to browser? any help would be appreciated. Thx, bala.
Re: setenv.sh - how to set system properties to values containing spaces
Hi André, The solution you have suggested just introduces a new variable, but with exactly the same characteristics of the existing CATALINA_OPTS variable (unless I am missing something.) The issue is, that even when the CATALINA_OPTS value looks like it is correctly quoted (echo of CATALINA_OPTS below), when java is invoked, it gets the system property com.sun.jndi.ldap.connect.pool.protocol set to plain and the next argument is ssl which it expects to be the class containing main. -Xms128m -Xmx256m -Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl -Dcom.sun.jndi.ldap.connect.pool.timeout=1 Thanks for the suggestion, Bap. Quoting André Warnier a...@ice-sa.com: Bap wrote: ... Looks very much like the problem from hell, where the number of extra quoting levels depends on the number of times this thing ends up being interpolated. A suggestion, which involves modifying catalina.sh, but maybe with less nefarious effects if it ever gets replaced : - modify catalina.sh such that, in each command-line executing Tomcat and in which $JAVA_OPTS is invoked, you add another $MY_JAVA_OPTS after the $JAVA_OPTS. - then define MY_JAVA_OPTS in setenv.sh, with what you want as additional options, using only 1 level of additional quoting. e.g. exec $_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \ becomes exec $_RUNJAVA $JAVA_OPTS $MY_JAVA_OPTS $CATALINA_OPTS \ and in setenv.sh : MY_JAVA_OPTS=-Dsomeparam=\this and that\ or MY_JAVA_OPTS='-Dsomeparam=this and that' - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Loading dynamically created content: An old chestnut but still a problem.
apache-tomcat-6.0.16 jdk1.6.0_03 Dev box : Windows Deployment box: Linux Hi I've read some other posts that seem to be asking similar questions but I can't find the answer so far. maybe someone here would be kind enough to give me a hint I have a retail application that stores the product images in a database. Each product can have many images and products are being uploaded all the time. Fetching images from the database every time results in a clunky page load so I want to cache the images to disk the first time an item is accessed my cache manager checks the disk cache to see if images for that item are available. If not it loads them onto the disk. this happens in the servlet that serves the item details up so the images are in the disk cache before the request is forwarded to the view (jsp) In the jsp I access the images from the disk cache. The problem is, the first time I access the item details the images are written to the cache which resides directly under the context root but they are not loaded in the view. If I restart tomcat the images disply fine so I know all the caching is working correctly. I can't restart tomcat everytime I upload a new product so how can I force tomcat to recognise the new images 'on the fly' so as to speak? The application is running as the ROOT application on the server and is the only application being served. An example image might be ../apache-tomcat-6.0.16/webapps/ROOT/imagecache/830_main.jpg (example) I'm quite happy that the imagecache is deleted everytime I redeploy the application because the application is starting to stabilise and once I have this last problem ironed out I will only be doing irregular maintenance. The faster loading of images is more than enough compensation. I can't use symbolic links to place the imagecache outside the application space because I develop on Windows and deploy to Linux (historical, nothing I can do about it) Any ideas much appreciated. Many thanks lyallex - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Apache Tomcat connection question
Rainer, Here is my problem. I have a host with one IP address mapped to two domain names, let us say www.app1.com and www.app2.com served by two web apps running on Tomcat say webapp1 and webapp2. I have Apache Tomcat config. setup to forward any requests coming for any of these two domain names to be routed to Tomcat. My problem is both of these web apps need to be the ROOT applications on Tomcat, and somehow the right app must be executed based on the incoming domain name. How do I setup both apps. as root context and Vhost on Tomcat. Thanks Ravi On Wed, Jun 10, 2009 at 12:58 AM, Rainer Jung rainer.j...@kippdata.dewrote: On 10.06.2009 06:00, R Ravichandran wrote: Hello, This is an urgent request. Any feedback is really appreciated. I have two web applications (let us call main app., and helper app.) running on Tomcat with an Apache server in from of Tomcat. Both Apache and Tomcat are running on the same host. The first web app on Tomcat is running as ROOT webapp. I have two websites mapped to the single IP address of the host. I want the right application accessed depending on the domain name used. - For example, for the domain name www.app1.com, I want the first tomcat web app reached. - for the domain name www.app2.com I want the second web app reached. Here is the config, I am using: = In Apache httpd.conf file: NameVirtualHost *:80 VirtualHost www.app1.com ServerName www.app1.com ProxyPreserveHost On ProxyPass / http://localhost:8080/app1 ProxyPassReverse / http://localhost:8080/app1 /VirtualHost VirtualHost www.app2.com ServerName www.app2.com ProxyPreserveHost On ProxyPass /totelistm http://localhost:8080/app2 ProxyPassReverse /totelistm http://localhost:8080/app2 /VirtualHost Here is the uriworkmap.properties file for mod_jk worker.list=loadbalancer,status /=loadbalancer /*=loadbalancer /app2=loadbalancer /app2/*=loadbalancer You forgot to tell us, what your actual problem is. Remarks: - I don't understand, why you want to use mod_proxy *and* mod_jk. Choose one of them, not both. - You can use virtual hosts in Tomcat too and put each webapp as the ROOT context in the respective vhost. - When using mod_proxy make sure to use ProxyPreserveHost to forward the original Hosts header, so that Tomcat can choose the correct vhost. Regards, Rainer - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: setenv.sh - how to set system properties to values containingspaces
On 10.06.2009 15:09, Bap wrote: Hi André, The solution you have suggested just introduces a new variable, but with exactly the same characteristics of the existing CATALINA_OPTS variable (unless I am missing something.) The issue is, that even when the CATALINA_OPTS value looks like it is correctly quoted (echo of CATALINA_OPTS below), when java is invoked, it gets the system property com.sun.jndi.ldap.connect.pool.protocol set to plain and the next argument is ssl which it expects to be the class containing main. -Xms128m -Xmx256m -Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl -Dcom.sun.jndi.ldap.connect.pool.timeout=1 Thanks for the suggestion, Bap. Quoting André Warnier a...@ice-sa.com: Bap wrote: ... Looks very much like the problem from hell, where the number of extra quoting levels depends on the number of times this thing ends up being interpolated. A suggestion, which involves modifying catalina.sh, but maybe with less nefarious effects if it ever gets replaced : - modify catalina.sh such that, in each command-line executing Tomcat and in which $JAVA_OPTS is invoked, you add another $MY_JAVA_OPTS after the $JAVA_OPTS. - then define MY_JAVA_OPTS in setenv.sh, with what you want as additional options, using only 1 level of additional quoting. e.g. exec $_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \ becomes exec $_RUNJAVA $JAVA_OPTS $MY_JAVA_OPTS $CATALINA_OPTS \ and in setenv.sh : MY_JAVA_OPTS=-Dsomeparam=\this and that\ or MY_JAVA_OPTS='-Dsomeparam=this and that' I know that's not the solution you are looking for, but you can add system properties in the form key=value to the file conf/catalina.properties. They will automatically be added by Tomcat to the System properties, so they will be visible to your webapps. I didn't play around with whitespace there, but at least there's no shell token expansion involved in catalina.properties and you don't have to hardcode the flags into your catalina.sh. In your speciaql case it is not clear, how early during bootstrap the code which is looking for the properties runs (whether Tomcat already handled the catalina.properties file), but it is worth a try. Regards, Rainer - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Apache Tomcat connection question
On 10.06.2009 15:42, R Ravichandran wrote: Rainer, Here is my problem. I have a host with one IP address mapped to two domain names, let us say www.app1.com and www.app2.com served by two web apps running on Tomcat say webapp1 and webapp2. I have Apache Tomcat config. setup to forward any requests coming for any of these two domain names to be routed to Tomcat. My problem is both of these web apps need to be the ROOT applications on Tomcat, and somehow the right app must be executed based on the incoming domain name. How do I setup both apps. as root context and Vhost on Tomcat. http://tomcat.apache.org/tomcat-6.0-doc/virtual-hosting-howto.html On Wed, Jun 10, 2009 at 12:58 AM, Rainer Jung rainer.j...@kippdata.dewrote: On 10.06.2009 06:00, R Ravichandran wrote: Hello, This is an urgent request. Any feedback is really appreciated. I have two web applications (let us call main app., and helper app.) running on Tomcat with an Apache server in from of Tomcat. Both Apache and Tomcat are running on the same host. The first web app on Tomcat is running as ROOT webapp. I have two websites mapped to the single IP address of the host. I want the right application accessed depending on the domain name used. - For example, for the domain name www.app1.com, I want the first tomcat web app reached. - for the domain name www.app2.com I want the second web app reached. Here is the config, I am using: = In Apache httpd.conf file: NameVirtualHost *:80 VirtualHost www.app1.com ServerName www.app1.com ProxyPreserveHost On ProxyPass / http://localhost:8080/app1 ProxyPassReverse / http://localhost:8080/app1 /VirtualHost VirtualHost www.app2.com ServerName www.app2.com ProxyPreserveHost On ProxyPass /totelistm http://localhost:8080/app2 ProxyPassReverse /totelistm http://localhost:8080/app2 /VirtualHost Here is the uriworkmap.properties file for mod_jk worker.list=loadbalancer,status /=loadbalancer /*=loadbalancer /app2=loadbalancer /app2/*=loadbalancer You forgot to tell us, what your actual problem is. Remarks: - I don't understand, why you want to use mod_proxy *and* mod_jk. Choose one of them, not both. - You can use virtual hosts in Tomcat too and put each webapp as the ROOT context in the respective vhost. - When using mod_proxy make sure to use ProxyPreserveHost to forward the original Hosts header, so that Tomcat can choose the correct vhost. Regards, Rainer - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: setenv.sh - how to set system properties to values containing spaces
Sorry, I mistook CATALINA_OPTS for JAVA_OPTS, but Bap wrote: Hi André, The solution you have suggested just introduces a new variable, but with exactly the same characteristics of the existing CATALINA_OPTS variable (unless I am missing something.) Say that, originally in setenv.sh, you set CATALINA_OPTS as follows (in one single line) : CATALINA_OPTS='-Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl' Then, in catalina.sh, a line such as the following : CATALINA_OPTS=$CATALINA_OPTS $JPDA_OPTS would make CATALINA_OPTS now be : -Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl then, at the next invocation, say here : exec $_RUNJAVA $JAVA_OPTS $CATALINA_OPTS this would be seen as exec (whatever) (whatever_java_opts) -Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl (whatever_follows) which is pretty much what you are seeing, right ? Now, what I am trying to tell you is : the CATALINA_OPTS variable is used several times in the catalina.sh script, in a way that may make it difficult to determine how many times it is being so interpolated into itself before being finally used. Each level of such interpolation, will remove one level of quoting. By defining your own variable, and using it just once in catalina.sh, at least you know how many times it is being interpolated (just once), and you can quote it correctly. Now, all this being said, why don't you try this in setenv.sh : CATALINA_OPTS='-Dcom.sun.jndi.ldap.connect.pool.protocol=\plain ssl\' And all of that being said, whoever decided that the property com.sun.jndi.ldap.connect.pool.protocol could be set to a value with embedded spaces ought to be exiled to a remote arctic island. Together with whomever invented file paths with embedded spaces. Together with whomever decided to install Tomcat by default in c:\program files\apache software foundation\. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: setenv.sh - how to set system properties to values containing spaces
On 10.06.2009 15:47, André Warnier wrote: Sorry, I mistook CATALINA_OPTS for JAVA_OPTS, but Bap wrote: Hi André, The solution you have suggested just introduces a new variable, but with exactly the same characteristics of the existing CATALINA_OPTS variable (unless I am missing something.) Say that, originally in setenv.sh, you set CATALINA_OPTS as follows (in one single line) : CATALINA_OPTS='-Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl' Then, in catalina.sh, a line such as the following : CATALINA_OPTS=$CATALINA_OPTS $JPDA_OPTS would make CATALINA_OPTS now be : -Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl then, at the next invocation, say here : exec $_RUNJAVA $JAVA_OPTS $CATALINA_OPTS this would be seen as exec (whatever) (whatever_java_opts) -Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl (whatever_follows) which is pretty much what you are seeing, right ? Now, what I am trying to tell you is : the CATALINA_OPTS variable is used several times in the catalina.sh script, in a way that may make it difficult to determine how many times it is being so interpolated into itself before being finally used. Each level of such interpolation, will remove one level of quoting. By defining your own variable, and using it just once in catalina.sh, at least you know how many times it is being interpolated (just once), and you can quote it correctly. Now, all this being said, why don't you try this in setenv.sh : CATALINA_OPTS='-Dcom.sun.jndi.ldap.connect.pool.protocol=\plain ssl\' And all of that being said, whoever decided that the property com.sun.jndi.ldap.connect.pool.protocol could be set to a value with embedded spaces ought to be exiled to a remote arctic island. Together with whomever invented file paths with embedded spaces. Together with whomever decided to install Tomcat by default in c:\program files\apache software foundation\. Adding to what André explains: the following small script shows a working procedure: #!/usr/bin/ksh OPTS=-DXXX=a b # or alternatively # OPTS=-DXXX=a b exec /usr/local/jdk1.6.0/bin/java $OPTS myprog What is important here: - the original variable including the system property is used on the commandline, no intermediate expansion or adding other tokens to the same variable - there is only one system property in the variable. You cann add the non-problematic ones to the standard variable, or if there are multiple properties with spaces, use multiple aditional variables. - The quotes aroung $OPTS in the line starting java. They are used, so that the shell passes the whole of $OPTS as one argument to the java process. The exec is only there, because it is done like that in the standard script. Regards, Rainer - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: custom header
It's the latter. I'm trying to avoid more than one war file across multiple
instances. I was hoping the urlrewritefilter had a global config, something I
could put in the tomcat conf dir, but couldn't find such a thing.
I'll go over to their m-list, as that'll be more appropriate now I think.
Thanx again for the pointer in the right direction.
-Tony
Sent from my Windows Mobile® phone.
-Original Message-
From: André Warnier a...@ice-sa.com
Sent: Wednesday, June 10, 2009 2:27 AM
To: Tomcat Users List users@tomcat.apache.org
Subject: Re: custom header
Anthony J. Biacco wrote:
Thanx for that, that sets the header for me, but to something static.
Only problem I have is I can't seem to figure out how to set it to the
hostname of the tomcat server, or a tomcat variable (set from the hostname of
the server - i.e. -Dmyjvmroute=`/bin/hostname -s` and then trying to use
${myjvmroute} in a rule such as:
I must be missing something here. Why would you want it to be dynamic ?
If you have several Tomcat instances as back-ends, then each one has its
own webapps, and each one of these webapps has its own web.xml, which is
where you configure its own urlrewrite filter. So what is the problem
in having it static in there ?
Or, wait, is it purely because you would like to be able to always
distribute the same identical web.xml to all instances ?
That would then become a more generic issue like how do I distribute
the same war-file to several Tomcat instances, but have each instance
pick up something instance-specific to include in its web.xml at load
time ?
Now, in this case I do believe that the urlrewrite filter uses a
separate config file, in which maybe there is a way to specify something
like that. Maybe then just that file would need to be instance-specific ?
-
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Re: setenv.sh - how to set system properties to values containingspaces
Thank you, Unfortunately I think I will have to go with this suggestion, setenv.sh does not look like it will bear fruit. Thanks again, Bap. Quoting Rainer Jung rainer.j...@kippdata.de: On 10.06.2009 15:09, Bap wrote: Hi André, The solution you have suggested just introduces a new variable, but with exactly the same characteristics of the existing CATALINA_OPTS variable (unless I am missing something.) The issue is, that even when the CATALINA_OPTS value looks like it is correctly quoted (echo of CATALINA_OPTS below), when java is invoked, it gets the system property com.sun.jndi.ldap.connect.pool.protocol set to plain and the next argument is ssl which it expects to be the class containing main. -Xms128m -Xmx256m -Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl -Dcom.sun.jndi.ldap.connect.pool.timeout=1 Thanks for the suggestion, Bap. Quoting André Warnier a...@ice-sa.com: Bap wrote: ... Looks very much like the problem from hell, where the number of extra quoting levels depends on the number of times this thing ends up being interpolated. A suggestion, which involves modifying catalina.sh, but maybe with less nefarious effects if it ever gets replaced : - modify catalina.sh such that, in each command-line executing Tomcat and in which $JAVA_OPTS is invoked, you add another $MY_JAVA_OPTS after the $JAVA_OPTS. - then define MY_JAVA_OPTS in setenv.sh, with what you want as additional options, using only 1 level of additional quoting. e.g. exec $_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \ becomes exec $_RUNJAVA $JAVA_OPTS $MY_JAVA_OPTS $CATALINA_OPTS \ and in setenv.sh : MY_JAVA_OPTS=-Dsomeparam=\this and that\ or MY_JAVA_OPTS='-Dsomeparam=this and that' I know that's not the solution you are looking for, but you can add system properties in the form key=value to the file conf/catalina.properties. They will automatically be added by Tomcat to the System properties, so they will be visible to your webapps. I didn't play around with whitespace there, but at least there's no shell token expansion involved in catalina.properties and you don't have to hardcode the flags into your catalina.sh. In your speciaql case it is not clear, how early during bootstrap the code which is looking for the properties runs (whether Tomcat already handled the catalina.properties file), but it is worth a try. Regards, Rainer - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: setenv.sh - how to set system properties to values containing spaces
Hi André, Now I understand the issue regarding the -jdpa option. I had not even considerred that one - if set, then CATALINA_OPTS would require 2 levels of escape, and, if not set, just one! I have only been looking at the start block as called by startup.sh without using -security exec (whatever) (whatever_java_opts) -Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl (whatever_follows) which is pretty much what you are seeing, right ? No, if I place echo at the start of the line that starts tomcat (start block, no -security) what I see is: /usr/java/default/bin/java -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file=/opt/bh-adws/conf/logging.properties -Xms128m -Xmx256m -Dcom.sun.jndi.ldap.connect.pool.protocol=\plain ssl\ -Dcom.sun.jndi.ldap.connect.pool.timeout=1 -Djava.endorsed.dirs=/opt/bh-adws/endorsed -classpath :/opt/bh-adws/bin/bootstrap.jar -Dcatalina.base=/opt/bh-adws -Dcatalina.home=/opt/bh-adws -Djava.io.tmpdir=/opt/bh-adws/temp org.apache.catalina.startup.Bootstrap start using you suggestion below, and /usr/java/default/bin/java -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file=/opt/bh-adws/conf/logging.properties -Xms128m -Xmx256m -Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl -Dcom.sun.jndi.ldap.connect.pool.timeout=1 -Djava.endorsed.dirs=/opt/bh-adws/endorsed -classpath :/opt/bh-adws/bin/bootstrap.jar -Dcatalina.base=/opt/bh-adws -Dcatalina.home=/opt/bh-adws -Djava.io.tmpdir=/opt/bh-adws/temp org.apache.catalina.startup.Bootstrap start if I use CATALINA_OPTS='-Xms128m -Xmx256m -Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl -Dcom.sun.jndi.ldap.connect.pool.timeout=1' as you can see, the quoting looks correct, yet the shell passes through 2 separate arguments for the property first as -Dcom.sun.jndi.ldap.connect.pool.protocol=plain and the seccond as ssl I think I am going to have to go with Rainer's suggestion of appending to conf/catalina.properties - not very nice, but should work. Thanks for all your help, Bap. As far as system properties go - why does Sun insist on using them for configuration, with no alternatives for configuration within a given scope, not jvm wide? Quoting André Warnier a...@ice-sa.com: Sorry, I mistook CATALINA_OPTS for JAVA_OPTS, but Bap wrote: Hi André, The solution you have suggested just introduces a new variable, but with exactly the same characteristics of the existing CATALINA_OPTS variable (unless I am missing something.) Say that, originally in setenv.sh, you set CATALINA_OPTS as follows (in one single line) : CATALINA_OPTS='-Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl' Then, in catalina.sh, a line such as the following : CATALINA_OPTS=$CATALINA_OPTS $JPDA_OPTS would make CATALINA_OPTS now be : -Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl then, at the next invocation, say here : exec $_RUNJAVA $JAVA_OPTS $CATALINA_OPTS this would be seen as exec (whatever) (whatever_java_opts) -Dcom.sun.jndi.ldap.connect.pool.protocol=plain ssl (whatever_follows) which is pretty much what you are seeing, right ? Now, what I am trying to tell you is : the CATALINA_OPTS variable is used several times in the catalina.sh script, in a way that may make it difficult to determine how many times it is being so interpolated into itself before being finally used. Each level of such interpolation, will remove one level of quoting. By defining your own variable, and using it just once in catalina.sh, at least you know how many times it is being interpolated (just once), and you can quote it correctly. Now, all this being said, why don't you try this in setenv.sh : CATALINA_OPTS='-Dcom.sun.jndi.ldap.connect.pool.protocol=\plain ssl\' And all of that being said, whoever decided that the property com.sun.jndi.ldap.connect.pool.protocol could be set to a value with embedded spaces ought to be exiled to a remote arctic island. Together with whomever invented file paths with embedded spaces. Together with whomever decided to install Tomcat by default in c:\program files\apache software foundation\. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: setenv.sh - how to set system properties to values containing spaces
Thanks again Rainer, Your seccond two points were covered in my initial mail containing the test code orig-quote I am pretty sure that the issue is with the shell, and have been using the code below to test all sorts of combinations of values for OPTS - the only way I can get the arg to print on one line is to quote $OPTS when it is expanded, which obviously will not work if there are any other options required in CATALINA_OPTS. /orig-quote exec is not included in my example, as tc 6.0.16 does not include it when it starts only when it runs. Thanks again, catalina.properties it is. Bap. Adding to what André explains: the following small script shows a working procedure: #!/usr/bin/ksh OPTS=-DXXX=a b # or alternatively # OPTS=-DXXX=a b exec /usr/local/jdk1.6.0/bin/java $OPTS myprog What is important here: - the original variable including the system property is used on the commandline, no intermediate expansion or adding other tokens to the same variable - there is only one system property in the variable. You cann add the non-problematic ones to the standard variable, or if there are multiple properties with spaces, use multiple aditional variables. - The quotes aroung $OPTS in the line starting java. They are used, so that the shell passes the whole of $OPTS as one argument to the java process. The exec is only there, because it is done like that in the standard script. Regards, Rainer - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Tomcat maxThreads Issue
Hello, I have Tomcat (can't figure out what version as the version.sh script is giving all kinds of errors) running on separate Linux servers. So an overview of my config is 1 web server, 4 app servers (tomcat), and 1 db server. We were seeing an increase in the httpd processes on the web server to the point where I had to increase the MaxClients on the apache 2 server to 2048. I finally figured out that the normal number of httpd daemons on the web server (50-100) was spiking due to tomcat processes stalling or going completely down. So I started looking at why tomcat was failing and I found this error message in the ACStarError.log : SEVERE: All threads (200) are currently busy, waiting. Increase maxThreads (200) or check the servlet status. So I checked the server.xml file and found the following: Connector port=81 protocol=HTTP/1.1 server=- maxThreads=600 connectionTimeout=2 redirectPort=443 / !-- Awele 20070402 For SSL Requests, processed non-SSL, due to Coyote SSL Accelerator -- !-- Connector port=443 address=10.5.3.9 protocol=HTTP/1.1 server=- secure=true maxThreads=600 connectionTimeout=2 / -- !-- Define a SSL HTTP/1.1 Connector on port 8443 This connector uses the JSSE configuration, when using APR, the connector should be using the OpenSSL style configuration described in the APR documentation -- !-- Connector port=8443 protocol=HTTP/1.1 SSLEnabled=true maxThreads=150 scheme=https secure=true clientAuth=false sslProtocol=TLS / -- So It looks like the maxThreads has already been increased to 600. The server has been rebooted and tomcat stopped/started multiple times. Again all servers are Red Hat 5.2. Is there an additional parameter that needs to be set in order for tomcat to actually increase the maxThreads ? Thank You Keven Jones
Re: Tomcat maxThreads Issue
Jones, Keven wrote: Hello, I have Tomcat (can't figure out what version as the version.sh script is giving all kinds of errors) running on separate Linux servers. So an overview of my config is 1 web server, 4 app servers (tomcat), and 1 db server. We were seeing an increase in the httpd processes on the web server to the point where I had to increase the MaxClients on the apache 2 server to 2048. I finally figured out that the normal number of httpd daemons on the web server (50-100) was spiking due to tomcat processes stalling or going completely down. So I started looking at why tomcat was failing and I found this error message in the ACStarError.log : SEVERE: All threads (200) are currently busy, waiting. Increase maxThreads (200) or check the servlet status. So I checked the server.xml file and found the following: Connector port=81 protocol=HTTP/1.1 server=- maxThreads=600 connectionTimeout=2 redirectPort=443 / !-- Awele 20070402 For SSL Requests, processed non-SSL, due to Coyote SSL Accelerator -- !-- Connector port=443 address=10.5.3.9 protocol=HTTP/1.1 server=- secure=true maxThreads=600 connectionTimeout=2 / -- !-- Define a SSL HTTP/1.1 Connector on port 8443 This connector uses the JSSE configuration, when using APR, the connector should be using the OpenSSL style configuration described in the APR documentation -- !-- Connector port=8443 protocol=HTTP/1.1 SSLEnabled=true maxThreads=150 scheme=https secure=true clientAuth=false sslProtocol=TLS / -- So It looks like the maxThreads has already been increased to 600. The server has been rebooted and tomcat stopped/started multiple times. Again all servers are Red Hat 5.2. Is there an additional parameter that needs to be set in order for tomcat to actually increase the maxThreads ? Thank You That is the http connector. What about the APR connector? You can leave out stuff that is commented out. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat maxThreads Issue
Here is the complete config file. Thanks for the quick reply. -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: Wednesday, June 10, 2009 11:14 AM To: Tomcat Users List Subject: Re: Tomcat maxThreads Issue Jones, Keven wrote: Hello, I have Tomcat (can't figure out what version as the version.sh script is giving all kinds of errors) running on separate Linux servers. So an overview of my config is 1 web server, 4 app servers (tomcat), and 1 db server. We were seeing an increase in the httpd processes on the web server to the point where I had to increase the MaxClients on the apache 2 server to 2048. I finally figured out that the normal number of httpd daemons on the web server (50-100) was spiking due to tomcat processes stalling or going completely down. So I started looking at why tomcat was failing and I found this error message in the ACStarError.log : SEVERE: All threads (200) are currently busy, waiting. Increase maxThreads (200) or check the servlet status. So I checked the server.xml file and found the following: Connector port=81 protocol=HTTP/1.1 server=- maxThreads=600 connectionTimeout=2 redirectPort=443 / !-- Awele 20070402 For SSL Requests, processed non-SSL, due to Coyote SSL Accelerator -- !-- Connector port=443 address=10.5.3.9 protocol=HTTP/1.1 server=- secure=true maxThreads=600 connectionTimeout=2 / -- !-- Define a SSL HTTP/1.1 Connector on port 8443 This connector uses the JSSE configuration, when using APR, the connector should be using the OpenSSL style configuration described in the APR documentation -- !-- Connector port=8443 protocol=HTTP/1.1 SSLEnabled=true maxThreads=150 scheme=https secure=true clientAuth=false sslProtocol=TLS / -- So It looks like the maxThreads has already been increased to 600. The server has been rebooted and tomcat stopped/started multiple times. Again all servers are Red Hat 5.2. Is there an additional parameter that needs to be set in order for tomcat to actually increase the maxThreads ? Thank You That is the http connector. What about the APR connector? You can leave out stuff that is commented out. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat maxThreads Issue
From: Jones, Keven [mailto:keven.jo...@ncr.com] Here is the complete config file. Thanks for the quick reply. The list strips attachments - please paste inline. - Peter - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: tomcat6.0.18 service unable to start
Send reply to: Tomcat Users List users@tomcat.apache.org Date sent: Wed, 10 Jun 2009 10:32:27 +0200 From: André Warnier a...@ice-sa.com Send reply to: a...@ice-sa.com To: Tomcat Users List users@tomcat.apache.org Subject:Re: tomcat6.0.18 service unable to start teoh wrote: my tomcat6 service unable to startup with error 0 code. i already tried put msvcr71.dll in tomcat/bin directory. still the same i'm using tomcat 6.0.18 with windows xp 32bits system in console, i able to start up the tomcat, but not on service. any suggestion what i missed out? my process monitor log at http://www.sendspace.com/file/t0tahr Not an answer to the problem, but the link you provide requires a signup, which many people will not want to do. So, basically, we can't Not really, scroll down and click the link to download, ignore the ad about registration. see your logfile. Can't you paste the relevant few lines right here ? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat maxThreads Issue
Sorry, here is the complete server.xml file: !-- Note: A Server is not itself a Container, so you may not define subcomponents such as Valves at this level. Documentation at /docs/config/server.html -- Server port=9011 shutdown=SHUTDOWN !--APR library loader. Documentation at /docs/apr.html -- Listener className=org.apache.catalina.core.AprLifecycleListener SSLEngine=on / !--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -- Listener className=org.apache.catalina.core.JasperListener / !-- JMX Support for the Tomcat server. Documentation at /docs/non-existent.html -- Listener className=org.apache.catalina.mbeans.ServerLifecycleListener / Listener className=org.apache.catalina.mbeans.GlobalResourcesLifecycleListener / !-- Global JNDI resources Documentation at /docs/jndi-resources-howto.html -- GlobalNamingResources !-- Editable user database that can also be used by UserDatabaseRealm to authenticate users -- Resource name=UserDatabase auth=Container type=org.apache.catalina.UserDatabase description=User database that can be updated and saved factory=org.apache.catalina.users.MemoryUserDatabaseFactory pathname=conf/tomcat-users.xml / /GlobalNamingResources !-- A Service is a collection of one or more Connectors that share a single Container Note: A Service is not itself a Container, so you may not define subcomponents such as Valves at this level. Documentation at /docs/config/service.html -- Service name=Catalina !-- A Connector represents an endpoint by which requests are received and responses are returned. Documentation at : Java HTTP Connector: /docs/config/http.html (blocking non-blocking) Java AJP Connector: /docs/config/ajp.html APR (HTTP/AJP) Connector: /docs/apr.html Define a non-SSL HTTP/1.1 Connector on port 8080 -- Connector port=81 protocol=HTTP/1.1 server=- maxThreads=600 connectionTimeout=2 redirectPort=443 / !-- Awele 20070402 For SSL Requests, processed non-SSL, due to Coyote SSL Accelerator -- !-- Connector port=443 address=10.5.3.9 protocol=HTTP/1.1 server=- secure=true maxThreads=600 connectionTimeout=2 / -- !-- Define a SSL HTTP/1.1 Connector on port 8443 This connector uses the JSSE configuration, when using APR, the connector should be using the OpenSSL style configuration described in the APR documentation -- !-- Connector port=8443 protocol=HTTP/1.1 SSLEnabled=true maxThreads=150 scheme=https secure=true clientAuth=false sslProtocol=TLS / -- !-- Define an AJP 1.3 Connector on port 8009 -- Connector port=8011 enableLookups=false protocol=AJP/1.3 redirectPort=8443 / !-- An Engine represents the entry point (within Catalina) that processes every request. The Engine implementation for Tomcat stand alone analyzes the HTTP headers included with the request, and passes them on to the appropriate Host (virtual host). Documentation at /docs/config/engine.html -- !-- You should set jvmRoute to support load-balancing via AJP ie : -- Engine name=Standalone defaultHost=localhost jvmRoute=mweb3a !-- Engine name=Catalina defaultHost=localhost -- !--For clustering, please take a look at documentation at: /docs/cluster-howto.html (simple how to) /docs/config/cluster.html (reference documentation) -- !-- Cluster className=org.apache.catalina.ha.tcp.SimpleTcpCluster/ -- !-- The request dumper valve dumps useful debugging information about the request and response data received and sent by Tomcat. Documentation at: /docs/config/valve.html -- !-- Valve className=org.apache.catalina.valves.RequestDumperValve/ -- !-- This Realm uses the UserDatabase configured in the global JNDI resources under the key UserDatabase. Any edits that are performed against this UserDatabase are immediately available for use by the Realm. -- Realm className=org.apache.catalina.realm.UserDatabaseRealm resourceName=UserDatabase/ !-- Define the default virtual host Note: XML Schema validation will not work with Xerces 2.2. -- Host name=localhost appBase=/usr/local/tomcat/webapps unpackWARs=true autoDeploy=true xmlValidation=false xmlNamespaceAware=false !-- SingleSignOn valve, share authentication between web applications Documentation at: /docs/config/valve.html -- !-- Valve className=org.apache.catalina.authenticator.SingleSignOn / -- !-- Access log
RE: Tomcat maxThreads Issue
From: Jones, Keven [mailto:keven.jo...@ncr.com] Subject: RE: Tomcat maxThreads Issue !-- Define an AJP 1.3 Connector on port 8009 -- Connector port=8011 enableLookups=false protocol=AJP/1.3 redirectPort=8443 / This is the connector Mark was referring to (he should have said AJP, not APR). Since you have no maxThreads attribute, it defaults to 200, which may or may not be appropriate for your expected load. The real question is what are those 200 threads doing? Try taking a couple of thread dumps when you get into the problem and see what they're stuck on. Engine name=Standalone defaultHost=localhost jvmRoute=mweb3a You really should have the Engine and Service names the same, to keep JMX happy. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat maxThreads Issue
I don't have any tomcat knowledge. Thank you for the reply. How do I A. get thread dumps when the processes are dying And B. You mentioned the engine and service name. I see we have Engine set to Standalone, And I see the Service is catalina (?) which should I adjust? Thx again -Original Message- From: Caldarale, Charles R [mailto:chuck.caldar...@unisys.com] Sent: Wednesday, June 10, 2009 11:33 AM To: Tomcat Users List Subject: RE: Tomcat maxThreads Issue From: Jones, Keven [mailto:keven.jo...@ncr.com] Subject: RE: Tomcat maxThreads Issue !-- Define an AJP 1.3 Connector on port 8009 -- Connector port=8011 enableLookups=false protocol=AJP/1.3 redirectPort=8443 / This is the connector Mark was referring to (he should have said AJP, not APR). Since you have no maxThreads attribute, it defaults to 200, which may or may not be appropriate for your expected load. The real question is what are those 200 threads doing? Try taking a couple of thread dumps when you get into the problem and see what they're stuck on. Engine name=Standalone defaultHost=localhost jvmRoute=mweb3a You really should have the Engine and Service names the same, to keep JMX happy. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat maxThreads Issue
From: Jones, Keven [mailto:keven.jo...@ncr.com] How do I A. get thread dumps when the processes are dying The top of http://java.sun.com/developer/technicalArticles/Programming/Stacktrace/ is good general reading. kill -QUIT pid of Java process If ps is confused by all the threads, depending on your Java version, you might be able to use jps (http://java.sun.com/j2se/1.5.0/docs/tooldocs/share/jps.html) to get the pid. Depending on your Java version, jstack (http://java.sun.com/j2se/1.5.0/docs/tooldocs/share/jstack.html) will also give you thread dumps. - Peter - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat maxThreads Issue
FYI, I'm just the linux admin as the applicatons group/developer and coder is not making any headway into resolving this. This is a mobility application (ie. Mobile banking, so you go to your iphone and go to your bank.mobi..)not that it matter but Ok, So yesterday I did perform a kill -3 and got a THREAD DUMP in the catalina.out file. I have copied most of it below: = FULL THREAD DUMP === Tue Jun 9 15:32:27 2009 BEA JRockit(R) R27.1.0-109-73164-1.5.0_08-20061129-1415-linux-x86_64 Main Thread id=1 idx=0x2 tid=10410 prio=5 alive, in native (Signal Handler) id=2 idx=0x4 tid=10412 prio=5 alive, in native, daemon (Code Generation Thread 1) id=3 idx=0x6 tid=10413 prio=5 alive, in native, native_waiting, daemon (Code Optimization Thread 1) id=4 idx=0x8 tid=10414 prio=5 alive, in native, native_waiting, daem on (GC Main Thread) id=5 idx=0xa tid=10415 prio=5 alive, in native, daemon (GC Worker Thread 1) id=? idx=0xc tid=10416 prio=5 terminated, daemon (GC Worker Thread 2) id=? idx=0xe tid=10417 prio=5 terminated, daemon (GC Worker Thread 3) id=? idx=0x10 tid=10418 prio=5 terminated, daemon (GC Worker Thread 4) id=? idx=0x12 tid=10419 prio=5 terminated, daemon (GC Worker Thread 5) id=? idx=0x14 tid=10420 prio=5 terminated, daemon (GC Worker Thread 6) id=? idx=0x16 tid=10421 prio=5 terminated, daemon (GC Worker Thread 7) id=? idx=0x18 tid=10422 prio=5 terminated, daemon (GC Worker Thread 8) id=? idx=0x1a tid=10423 prio=5 terminated, daemon (VM Periodic Task) id=6 idx=0x1c tid=10424 prio=10 alive, in native, daemon Finalizer id=7 idx=0x1e tid=10425 prio=8 alive, in native, native_waiting, daemon at jrockit/memory/Finalizer.getPendingFinalizee(Z)Ljava/lang/Object;(Native Method) at jrockit/memory/Finalizer.access$100(Z)Ljava/lang/Object;(Unknown Source)[optimized] at jrockit/memory/Finalizer$4.run()V(Unknown Source) at java/lang/Thread.run(Thread.java:595) at jrockit/vm/RNI.c2java()V(Native Method) -- end of trace Reference Handler id=8 idx=0x20 tid=10426 prio=10 alive, in native, native_waiting, daemon at java/lang/ref/Reference.getPending()Ljava/lang/ref/Reference;(Native Method) at java/lang/ref/Reference.access$000()Ljava/lang/ref/Reference;(Unknown Source) at java/lang/ref/Reference$ReferenceHandler.run()V(Unknown Source) at jrockit/vm/RNI.c2java()V(Native Method) -- end of trace (Sensor Event Thread) id=9 idx=0x22 tid=10427 prio=5 alive, in native, daemon Thread-1 id=12 idx=0x24 tid=10436 prio=1 alive, in native, sleeping, native_waiting at java/lang/Thread.sleep(J)V(Native Method) at com/mshift/d/j.run()V(Unknown Source) at jrockit/vm/RNI.c2java()V(Native Method) -- end of trace ContainerBackgroundProcessor[StandardEngine[Standalone]] id=13 idx=0x26 tid=10437 prio=5 alive, i n native, sleeping, native_waiting, daemon at java/lang/Thread.sleep(J)V(Native Method) at org/apache/catalina/core/ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1 549) at java/lang/Thread.run(Thread.java:595) at jrockit/vm/RNI.c2java()V(Native Method) -- end of trace http-81-Acceptor-0 id=14 idx=0x28 tid=10439 prio=5 alive, in native, daemon at java/net/PlainSocketImpl.socketAccept(Ljava/net/SocketImpl;)V(Native Method) at java/net/PlainSocketImpl.accept(PlainSocketImpl.java:384) ^-- Holding lock: java/net/sockssocketi...@0x13141ec0[thin lock] at java/net/ServerSocket.implAccept(ServerSocket.java:450) at java/net/ServerSocket.accept(ServerSocket.java:421) at org/apache/tomcat/util/net/DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactor y.java:61) at org/apache/tomcat/util/net/JIoEndpoint$Acceptor.run(JIoEndpoint.java:310) at java/lang/Thread.run(Thread.java:595) at jrockit/vm/RNI.c2java()V(Native Method) -- end of trace aRequest: -Completed- id=105163 idx=0x2a tid=18944 prio=5 alive, in native, waiting, daemon -- Waiting for notification on: org/apache/tomcat/util/net/jioendpoint$wor...@0x27a6a568[fat lo ck] at jrockit/vm/Threads.waitForSignal(J)Z(Native Method) at jrockit/vm/Locks.wait(Ljava/lang/Object;J)V(Unknown Source)[inlined] at java/lang/Object.wait()V(Native Method)[optimized] at org/apache/tomcat/util/net/JIoEndpoint$Worker.await(JIoEndpoint.java:414) ^-- Lock released while waiting: org/apache/tomcat/util/net/jioendpoint$wor...@0x27a6a568[fat l ock] at org/apache/tomcat/util/net/JIoEndpoint$Worker.run(JIoEndpoint.java:440) at java/lang/Thread.run(Thread.java:595)[optimized] at jrockit/vm/RNI.c2java()V(Native Method) -- end of trace aRequest: -Completed- id=16 idx=0x2c tid=10441 prio=5 alive, in native, daemon at jrockit/net/SocketNativeIO.readBytesPinned(Ljava/io/FileDescriptor;[BIII)I(Native Method) at jrockit/net/SocketNativeIO.socketRead(Ljava/io/FileDescriptor;[BIII)I(Unknown Source)[inline d] at
Re: Loading dynamically created content: An old chestnut but still a problem.
So you are actually storing the image data in the database, as opposed to the filepath? interesting... So your webapp accesses the image data as needed and writes it to imagecache dir? Is this feature not working? i don't understand what exactly the issue is that you are having. please explain. On Wed, Jun 10, 2009 at 9:41 AM, Lyallex lyal...@gmail.com wrote: apache-tomcat-6.0.16 jdk1.6.0_03 Dev box : Windows Deployment box: Linux Hi I've read some other posts that seem to be asking similar questions but I can't find the answer so far. maybe someone here would be kind enough to give me a hint I have a retail application that stores the product images in a database. Each product can have many images and products are being uploaded all the time. Fetching images from the database every time results in a clunky page load so I want to cache the images to disk the first time an item is accessed my cache manager checks the disk cache to see if images for that item are available. If not it loads them onto the disk. this happens in the servlet that serves the item details up so the images are in the disk cache before the request is forwarded to the view (jsp) In the jsp I access the images from the disk cache. The problem is, the first time I access the item details the images are written to the cache which resides directly under the context root but they are not loaded in the view. If I restart tomcat the images disply fine so I know all the caching is working correctly. I can't restart tomcat everytime I upload a new product so how can I force tomcat to recognise the new images 'on the fly' so as to speak? The application is running as the ROOT application on the server and is the only application being served. An example image might be ../apache-tomcat-6.0.16/webapps/ROOT/imagecache/830_main.jpg (example) I'm quite happy that the imagecache is deleted everytime I redeploy the application because the application is starting to stabilise and once I have this last problem ironed out I will only be doing irregular maintenance. The faster loading of images is more than enough compensation. I can't use symbolic links to place the imagecache outside the application space because I develop on Windows and deploy to Linux (historical, nothing I can do about it) Any ideas much appreciated. Many thanks lyallex - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat maxThreads Issue
OK, so that's a JRockit JVM, not a Sun JVM. Remind me not to point you at any more Sun documentation! As a rough look at that, there are a few threads in the HTTP connector thread pool, a bunch of threads reading data from JK connections, and one or two in your app code. I've never looked at the innards of JK, so will have to leave that to one of the JK experts to interpret. - Peter - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Does user's network connection speed affect response time logged by AccessLogValve (i.e. %D) ?
Hi all, Pardon me if this seems an ignorant question. I’ve recently discovered the %D option in the tomcat AccessLogValve to record response times on the “server side”. I wanted to doublecheck an issue: does the user’s network connection speed affect the time recorded by the AccessLogValve. Initially I thought that this time is “pure server side”. Then as I considered TCP/IP socket details (and my ignorance), as well as where/when buffering takes place in the Tomcat/Coyote stack, I thought I should dig a bit deeper. I’ve delved into the tomcat source (5.5) but didn’t get terribly far. I do know that the coyote “outputBuffer” has a default 8K buffer size, but don’t know if classes farther up the stack has more buffering . Thanks, bill - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat maxThreads Issue
Looking at the history of the thread - here are some guesses You have a connector on port 81 (http) and a connector on 8011 (ajp) and commented out connector for 443. The port 81 connector and commented out connector are set to 600 - which means absolutely nothing if apache is talking to tomcat via jk. Set |maxThreads on the connector for using port 8011 and life should be better. If there are mulitple apache servers in front of tomcat - you need to ensure you have (#apaches * max number connections per apache) threads available on each tomcat. The thread history seems to indicate you only have one apache with 100 workers max. So raising the maxThreads in tomcat from 200 to something higher is not needed. Is there a firewall between apache and tomcat? If so - it could mean that your firewall is timing out the connection and then bad things happen. | http://tomcat.apache.org/tomcat-6.0-doc/config/ajp.html -Tim - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat maxThreads Issue
I encountered a similar issue of numerous Httpd processes spawning b/c of Tomcat. The issue for me was that Tomcat was running out of memory, and Httpd for some reason thought spawning a bunch a threads would help ;) Do you know how much memory these instances of Tomcat are using? The default JVM memory is ridiculously low and requires the adjustment to higher maximum value for production servers. Grep heap catalina.out to see if tomcat is indeed running out of memory. On Wed, Jun 10, 2009 at 12:44 PM, Peter Crowther peter.crowt...@melandra.com wrote: OK, so that's a JRockit JVM, not a Sun JVM. Remind me not to point you at any more Sun documentation! As a rough look at that, there are a few threads in the HTTP connector thread pool, a bunch of threads reading data from JK connections, and one or two in your app code. I've never looked at the innards of JK, so will have to leave that to one of the JK experts to interpret. - Peter - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Does user's network connection speed affect response time logged by AccessLogValve (i.e. %D) ?
AccessLogValve cannot log until the request is done. Done meaning that the Servlet is done writing its content. So AccessLogValve can execute once the Servlet is done writing. It may (or may not) mean the client has yet received all the content since the OS might do some buffering. The outputBuffer with a default of 8k is unrelated to this topic. -Tim William Milbratz wrote: Hi all, Pardon me if this seems an ignorant question. I’ve recently discovered the %D option in the tomcat AccessLogValve to record response times on the “server side”. I wanted to doublecheck an issue: does the user’s network connection speed affect the time recorded by the AccessLogValve. Initially I thought that this time is “pure server side”. Then as I considered TCP/IP socket details (and my ignorance), as well as where/when buffering takes place in the Tomcat/Coyote stack, I thought I should dig a bit deeper. I’ve delved into the tomcat source (5.5) but didn’t get terribly far. I do know that the coyote “outputBuffer” has a default 8K buffer size, but don’t know if classes farther up the stack has more buffering . - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat maxThreads Issue
I did a grep for heap in catalina.out but do not see any out of memory entries. How do I check the default JVM memory setting and how do I adjust it? Thx -Original Message- From: Jonathan Mast [mailto:jhmast.develo...@gmail.com] Sent: Wednesday, June 10, 2009 1:04 PM To: Tomcat Users List Subject: Re: Tomcat maxThreads Issue I encountered a similar issue of numerous Httpd processes spawning b/c of Tomcat. The issue for me was that Tomcat was running out of memory, and Httpd for some reason thought spawning a bunch a threads would help ;) Do you know how much memory these instances of Tomcat are using? The default JVM memory is ridiculously low and requires the adjustment to higher maximum value for production servers. Grep heap catalina.out to see if tomcat is indeed running out of memory. On Wed, Jun 10, 2009 at 12:44 PM, Peter Crowther peter.crowt...@melandra.com wrote: OK, so that's a JRockit JVM, not a Sun JVM. Remind me not to point you at any more Sun documentation! As a rough look at that, there are a few threads in the HTTP connector thread pool, a bunch of threads reading data from JK connections, and one or two in your app code. I've never looked at the innards of JK, so will have to leave that to one of the JK experts to interpret. - Peter - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Loading dynamically created content: An old chestnut but still a problem.
Hi I'll try to explain in as few words as possible. When I upload a new product I store the image data and the text in the database. I did this to try and separate the data from the application with the intention of eventually having the data reside on a separate device optimised for serving data ... well that was my original thinking anyway. At the moment, when I load an image I use a proxy servlet and extract the imageid from the 'Product' (p below) img src=ImageProxy?%=WebConstants.IMAGE_ID%=%=p.calculateImageId()%... etc '/ This gets the image from the database and displays it in the page. This is clunky and slow and the image is not cached by the browser So, when a user views an item detail I do something like this getProductDetails?productId='whatever' In the GetProductDetails servlet I check the disk cache to see if the image is there, if not I get it from the database an write it to the cache, just one database access as opposed to many, the next time anyone sees that item the images are already cached. now, in the jsp I can use img src=imagecache/%=p.getProductId()%_thumb.jpg ...' etc/ In other words, as opposed to getting an anonymous byte stream and displaying it in the browser I'm now accessing a named image and the browser caches it. It all works beautifully apart from the fact that it appears the DefaultServlet will not load resources that have been written to disk after the server has been started. If I restart the server I can see my images, but only the ones loaded thus far ... Anyway, I'm currently looking at the serveResource() method in the DefaultServlet to try and figure out if it is possible to configure it to load resoures that have appeared after the server has started ... it doesn't look like it is possible which is slightly depressing ... unless of course I am missing something. Surely this is not an unusual requirement, how do others deal with serving up images that have been uploaded after the server has started. Anyway Thanks for taking the time to reply lyallex 2009/6/10 Jonathan Mast jhmast.develo...@gmail.com: So you are actually storing the image data in the database, as opposed to the filepath? interesting... So your webapp accesses the image data as needed and writes it to imagecache dir? Is this feature not working? i don't understand what exactly the issue is that you are having. please explain. On Wed, Jun 10, 2009 at 9:41 AM, Lyallex lyal...@gmail.com wrote: apache-tomcat-6.0.16 jdk1.6.0_03 Dev box : Windows Deployment box: Linux Hi I've read some other posts that seem to be asking similar questions but I can't find the answer so far. maybe someone here would be kind enough to give me a hint I have a retail application that stores the product images in a database. Each product can have many images and products are being uploaded all the time. Fetching images from the database every time results in a clunky page load so I want to cache the images to disk the first time an item is accessed my cache manager checks the disk cache to see if images for that item are available. If not it loads them onto the disk. this happens in the servlet that serves the item details up so the images are in the disk cache before the request is forwarded to the view (jsp) In the jsp I access the images from the disk cache. The problem is, the first time I access the item details the images are written to the cache which resides directly under the context root but they are not loaded in the view. If I restart tomcat the images disply fine so I know all the caching is working correctly. I can't restart tomcat everytime I upload a new product so how can I force tomcat to recognise the new images 'on the fly' so as to speak? The application is running as the ROOT application on the server and is the only application being served. An example image might be ../apache-tomcat-6.0.16/webapps/ROOT/imagecache/830_main.jpg (example) I'm quite happy that the imagecache is deleted everytime I redeploy the application because the application is starting to stabilise and once I have this last problem ironed out I will only be doing irregular maintenance. The faster loading of images is more than enough compensation. I can't use symbolic links to place the imagecache outside the application space because I develop on Windows and deploy to Linux (historical, nothing I can do about it) Any ideas much appreciated. Many thanks lyallex - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat maxThreads Issue
Thank you Tim I am going to attempt to set the maxThreads on 8011 to 600 and hope it helps. The config is 1 linux apache2 server with 4 linux tomcat servers and each tomcat server has 4 sepearte tomcat instances. So we have a total of 16 tomcat instances across 4 servers. Yes, there is a firewall between the web sever and the app(tomcat)/db(mysql) server. KJ -Original Message- From: Tim Funk [mailto:funk...@apache.org] Sent: Wednesday, June 10, 2009 1:02 PM To: Tomcat Users List Subject: Re: Tomcat maxThreads Issue Looking at the history of the thread - here are some guesses You have a connector on port 81 (http) and a connector on 8011 (ajp) and commented out connector for 443. The port 81 connector and commented out connector are set to 600 - which means absolutely nothing if apache is talking to tomcat via jk. Set |maxThreads on the connector for using port 8011 and life should be better. If there are mulitple apache servers in front of tomcat - you need to ensure you have (#apaches * max number connections per apache) threads available on each tomcat. The thread history seems to indicate you only have one apache with 100 workers max. So raising the maxThreads in tomcat from 200 to something higher is not needed. Is there a firewall between apache and tomcat? If so - it could mean that your firewall is timing out the connection and then bad things happen. | http://tomcat.apache.org/tomcat-6.0-doc/config/ajp.html -Tim - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Loading dynamically created content: An old chestnut but still a problem.
Ok, so this approach of writing to disk after reading the database is not working at all. I thought you were saying previously that was working up to a point, but then failing for new products. I know its completely possible to add images the root of a Web-App folder after deployment and have Tomcat see them. Are you by chance running Tomcat behind Apache Httpd or some other server? On Wed, Jun 10, 2009 at 1:10 PM, Lyallex lyal...@gmail.com wrote: Hi I'll try to explain in as few words as possible. When I upload a new product I store the image data and the text in the database. I did this to try and separate the data from the application with the intention of eventually having the data reside on a separate device optimised for serving data ... well that was my original thinking anyway. At the moment, when I load an image I use a proxy servlet and extract the imageid from the 'Product' (p below) img src=ImageProxy?%=WebConstants.IMAGE_ID%=%=p.calculateImageId()%... etc '/ This gets the image from the database and displays it in the page. This is clunky and slow and the image is not cached by the browser So, when a user views an item detail I do something like this getProductDetails?productId='whatever' In the GetProductDetails servlet I check the disk cache to see if the image is there, if not I get it from the database an write it to the cache, just one database access as opposed to many, the next time anyone sees that item the images are already cached. now, in the jsp I can use img src=imagecache/%=p.getProductId()%_thumb.jpg ...' etc/ In other words, as opposed to getting an anonymous byte stream and displaying it in the browser I'm now accessing a named image and the browser caches it. It all works beautifully apart from the fact that it appears the DefaultServlet will not load resources that have been written to disk after the server has been started. If I restart the server I can see my images, but only the ones loaded thus far ... Anyway, I'm currently looking at the serveResource() method in the DefaultServlet to try and figure out if it is possible to configure it to load resoures that have appeared after the server has started ... it doesn't look like it is possible which is slightly depressing ... unless of course I am missing something. Surely this is not an unusual requirement, how do others deal with serving up images that have been uploaded after the server has started. Anyway Thanks for taking the time to reply lyallex 2009/6/10 Jonathan Mast jhmast.develo...@gmail.com: So you are actually storing the image data in the database, as opposed to the filepath? interesting... So your webapp accesses the image data as needed and writes it to imagecache dir? Is this feature not working? i don't understand what exactly the issue is that you are having. please explain. On Wed, Jun 10, 2009 at 9:41 AM, Lyallex lyal...@gmail.com wrote: apache-tomcat-6.0.16 jdk1.6.0_03 Dev box : Windows Deployment box: Linux Hi I've read some other posts that seem to be asking similar questions but I can't find the answer so far. maybe someone here would be kind enough to give me a hint I have a retail application that stores the product images in a database. Each product can have many images and products are being uploaded all the time. Fetching images from the database every time results in a clunky page load so I want to cache the images to disk the first time an item is accessed my cache manager checks the disk cache to see if images for that item are available. If not it loads them onto the disk. this happens in the servlet that serves the item details up so the images are in the disk cache before the request is forwarded to the view (jsp) In the jsp I access the images from the disk cache. The problem is, the first time I access the item details the images are written to the cache which resides directly under the context root but they are not loaded in the view. If I restart tomcat the images disply fine so I know all the caching is working correctly. I can't restart tomcat everytime I upload a new product so how can I force tomcat to recognise the new images 'on the fly' so as to speak? The application is running as the ROOT application on the server and is the only application being served. An example image might be ../apache-tomcat-6.0.16/webapps/ROOT/imagecache/830_main.jpg (example) I'm quite happy that the imagecache is deleted everytime I redeploy the application because the application is starting to stabilise and once I have this last problem ironed out I will only be doing irregular maintenance. The faster loading of images is more than enough compensation. I can't use symbolic links to place the imagecache outside the application space because I develop on Windows and deploy to Linux (historical, nothing I
Re: tomcat6.0.18 service unable to start
Steve Ochani wrote: ... my process monitor log at http://www.sendspace.com/file/t0tahr Not an answer to the problem, but the link you provide requires a signup, which many people will not want to do. So, basically, we can't Not really, scroll down and click the link to download, ignore the ad about registration. Yes, really. With FF 3.1 it never shows any download link. YMMV, but that's the M I get. With IE7, after a while, the content changes and it does indeed show a download link. But also a message saying it blocked popups etc.. Not encouraging for people wanting to help anyway, most of them I guess won't be using IE anyway. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Loading dynamically created content: An old chestnut but still a problem.
Odd Personally - I would do the following: Make all calls to the servlet and the servlet does this: 1) Sanity check the incoming path 2) Check for the existence of the image (using ServletContext.getResource(path) 3) If not exists - load the image from the db and store to disk 4) forward to image via request.getRequestDispatcher(path).forward(request, response) The above assumes the image cache directory is part of the webapp and visible to ServletContext.getResource If the image cache directory lives outside the webapp - then I amazed that the default servlet was ever working. In which case - you can use a symlink. If you are stuck on windows or all the above still doesn't work - then you can still do this: 0) In apache - you can map the image cache dir to some location - or have tomcat do that too in its own webapp 1) Sanity check the incoming path 2) Check for the existence of the image using a filesystem call 3) If not exists - load the image from the db and store to disk 4) redirect to the static image path -Tim Lyallex wrote: Hi I'll try to explain in as few words as possible. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat maxThreads Issue
If your not scared of the performance penalty (which these days isn't scary unless you really have high load) - try adding this to your apache config - it will end the connection between apache and tomcat after each request. This virtually eliminates the chance of a firewall dropping connections for you. JkOptions +DisableReuse YOu prob dont want this permanantly but its a good test http://tomcat.apache.org/connectors-doc/reference/apache.html -Tim Jones, Keven wrote: Thank you Tim I am going to attempt to set the maxThreads on 8011 to 600 and hope it helps. The config is 1 linux apache2 server with 4 linux tomcat servers and each tomcat server has 4 sepearte tomcat instances. So we have a total of 16 tomcat instances across 4 servers. Yes, there is a firewall between the web sever and the app(tomcat)/db(mysql) server. KJ -Original Message- From: Tim Funk [mailto:funk...@apache.org] Sent: Wednesday, June 10, 2009 1:02 PM To: Tomcat Users List Subject: Re: Tomcat maxThreads Issue Looking at the history of the thread - here are some guesses You have a connector on port 81 (http) and a connector on 8011 (ajp) and commented out connector for 443. The port 81 connector and commented out connector are set to 600 - which means absolutely nothing if apache is talking to tomcat via jk. Set |maxThreads on the connector for using port 8011 and life should be better. If there are mulitple apache servers in front of tomcat - you need to ensure you have (#apaches * max number connections per apache) threads available on each tomcat. The thread history seems to indicate you only have one apache with 100 workers max. So raising the maxThreads in tomcat from 200 to something higher is not needed. Is there a firewall between apache and tomcat? If so - it could mean that your firewall is timing out the connection and then bad things happen. | http://tomcat.apache.org/tomcat-6.0-doc/config/ajp.html -Tim - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat maxThreads Issue
From: Jones, Keven [mailto:keven.jo...@ncr.com] Subject: RE: Tomcat maxThreads Issue I am going to attempt to set the maxThreads on 8011 to 600 and hope it helps. It will likely only postpone the problem. Yes, there is a firewall between the web sever and the app(tomcat)/db(mysql) server. The question was whether or not there's a firewall between httpd and Tomcat, not Tomcat and the DB server. If there is a firewall between httpd and Tomcat, it could be silently dropping the AJP connections, leaving Tomcat threads stranded on unusable ports. There has been much discussion about this of late on this mailing list; I'll try to find some pointers for you. Unless you're seeing OutOfMemoryErrors in your Tomcat logs, the heap sizing is very likely a red herring. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Loading dynamically created content: An old chestnut but still a problem.
On Wed, Jun 10, 2009 at 10:10 AM, Lyallexlyal...@gmail.com wrote: When I upload a new product I store the image data and the text in the database. I did this to try and separate the data from the application with the intention of eventually having the data reside on a separate device optimised for serving data ... well that was my original thinking anyway. which, BTW, still doesn't necessarily imply storing images in the DB, but whatever floats your boat. :-) it appears the DefaultServlet will not load resources that have been written to disk after the server has been started. ? Works fine for me -- I frequently load new product images to sites on my server, and no restart is required. -- Hassan Schroeder hassan.schroe...@gmail.com - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat maxThreads Issue
Well I'm not sure how to check the current memory settings but I sure know how to adjust them :) Presuming that you downloaded Tomcat directly and installed manually: open $TOMCAT/bin/catalina.sh Add the following somewhere near the top (I place mine after all the explanatory comments): JAVA_OPTS= -Xmx1024m This is tells java to allow a maximum of 1024 megabytes of memory to this instance of tomcat. Adjust appropriately. Please note: * the leading SPACE before the -Xmx. * this is not a labeled parameter, therefore no = btwn the option and value. On Wed, Jun 10, 2009 at 1:12 PM, Jones, Keven keven.jo...@ncr.com wrote: Thank you Tim I am going to attempt to set the maxThreads on 8011 to 600 and hope it helps. The config is 1 linux apache2 server with 4 linux tomcat servers and each tomcat server has 4 sepearte tomcat instances. So we have a total of 16 tomcat instances across 4 servers. Yes, there is a firewall between the web sever and the app(tomcat)/db(mysql) server. KJ -Original Message- From: Tim Funk [mailto:funk...@apache.org] Sent: Wednesday, June 10, 2009 1:02 PM To: Tomcat Users List Subject: Re: Tomcat maxThreads Issue Looking at the history of the thread - here are some guesses You have a connector on port 81 (http) and a connector on 8011 (ajp) and commented out connector for 443. The port 81 connector and commented out connector are set to 600 - which means absolutely nothing if apache is talking to tomcat via jk. Set |maxThreads on the connector for using port 8011 and life should be better. If there are mulitple apache servers in front of tomcat - you need to ensure you have (#apaches * max number connections per apache) threads available on each tomcat. The thread history seems to indicate you only have one apache with 100 workers max. So raising the maxThreads in tomcat from 200 to something higher is not needed. Is there a firewall between apache and tomcat? If so - it could mean that your firewall is timing out the connection and then bad things happen. | http://tomcat.apache.org/tomcat-6.0-doc/config/ajp.html -Tim - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Does user's network connection speed affect response time loggedby AccessLogValve (i.e. %D) ?
From: Tim Funk [mailto:funk...@apache.org] Subject: Re: Does user's network connection speed affect response time loggedby AccessLogValve (i.e. %D) ? AccessLogValve cannot log until the request is done. Done meaning that the Servlet is done writing its content. There's also the issue that the servlet cannot complete until the client has finished sending all of its content for the request. In the case of something large, such as a file upload, the timer could have started long before all the content was received. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers.
RE: Tomcat maxThreads Issue
Cool, Also, I'm examining my tomcat server.xml conf file for each instnace on each server. I am finding that Tomcat1 AJP connector is 8011, Tomcat2 AJP 8012, Tomcat3 AJP 8013, and Tomcat4 AJP 8014. So I will try and Add a maxThreads 600 on each of these. Thanks -Original Message- From: Tim Funk [mailto:funk...@apache.org] Sent: Wednesday, June 10, 2009 1:33 PM To: Tomcat Users List Subject: Re: Tomcat maxThreads Issue If your not scared of the performance penalty (which these days isn't scary unless you really have high load) - try adding this to your apache config - it will end the connection between apache and tomcat after each request. This virtually eliminates the chance of a firewall dropping connections for you. JkOptions +DisableReuse YOu prob dont want this permanantly but its a good test http://tomcat.apache.org/connectors-doc/reference/apache.html -Tim Jones, Keven wrote: Thank you Tim I am going to attempt to set the maxThreads on 8011 to 600 and hope it helps. The config is 1 linux apache2 server with 4 linux tomcat servers and each tomcat server has 4 sepearte tomcat instances. So we have a total of 16 tomcat instances across 4 servers. Yes, there is a firewall between the web sever and the app(tomcat)/db(mysql) server. KJ -Original Message- From: Tim Funk [mailto:funk...@apache.org] Sent: Wednesday, June 10, 2009 1:02 PM To: Tomcat Users List Subject: Re: Tomcat maxThreads Issue Looking at the history of the thread - here are some guesses You have a connector on port 81 (http) and a connector on 8011 (ajp) and commented out connector for 443. The port 81 connector and commented out connector are set to 600 - which means absolutely nothing if apache is talking to tomcat via jk. Set |maxThreads on the connector for using port 8011 and life should be better. If there are mulitple apache servers in front of tomcat - you need to ensure you have (#apaches * max number connections per apache) threads available on each tomcat. The thread history seems to indicate you only have one apache with 100 workers max. So raising the maxThreads in tomcat from 200 to something higher is not needed. Is there a firewall between apache and tomcat? If so - it could mean that your firewall is timing out the connection and then bad things happen. | http://tomcat.apache.org/tomcat-6.0-doc/config/ajp.html -Tim - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat maxThreads Issue
From: Jonathan Mast [mailto:jhmast.develo...@gmail.com] Subject: Re: Tomcat maxThreads Issue Add the following somewhere near the top (I place mine after all the explanatory comments): JAVA_OPTS= -Xmx1024m Again, if there's no evidence of a heap issue (and none has been presented) *do not* change the heap settings - at best that can only muddy the water. If you want to look at garbage collection activity, use -verbose:gc (which should work even on JRockit) to get information about how often a GC occurs. Unless it's happening very frequently, leave the heap settings alone. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat maxThreads Issue
From: Jones, Keven [mailto:keven.jo...@ncr.com] Subject: RE: Tomcat maxThreads Issue I see we have Engine set to Standalone, And I see the Service is catalina (?) I would leave the name as Catalina (it's case sensitive), since that's what everyone expects (unless you have multiple Service elements - a very rare need). - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat maxThreads Issue
From: Caldarale, Charles R Subject: RE: Tomcat maxThreads Issue There has been much discussion about this of late on this mailing list; I'll try to find some pointers for you. This is a useful reference: http://tomcat.apache.org/connectors-doc/generic_howto/timeouts.html#Firewall%20Connection%20Dropping The best (and unfortunately, biggest) discussion of this issue is here: http://marc.info/?t=12422502151r=1w=2 The most useful messages in this 61-posting thread are Rainer's, should you want to browse through them. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat maxThreads Issue
Does the syntax of this look correct to everyone? I have added maxThreads=400 and connectionTimeout=2(not sure if I need the connectionTimeout) Connector port=8011 enableLookups=false protocol=AJP/1.3 redirectPort=8443 maxThreads=400 connectionTimeout=2/ Thanks everyone -Original Message- From: Tim Funk [mailto:funk...@apache.org] Sent: Wednesday, June 10, 2009 1:02 PM To: Tomcat Users List Subject: Re: Tomcat maxThreads Issue Looking at the history of the thread - here are some guesses You have a connector on port 81 (http) and a connector on 8011 (ajp) and commented out connector for 443. The port 81 connector and commented out connector are set to 600 - which means absolutely nothing if apache is talking to tomcat via jk. Set |maxThreads on the connector for using port 8011 and life should be better. If there are mulitple apache servers in front of tomcat - you need to ensure you have (#apaches * max number connections per apache) threads available on each tomcat. The thread history seems to indicate you only have one apache with 100 workers max. So raising the maxThreads in tomcat from 200 to something higher is not needed. Is there a firewall between apache and tomcat? If so - it could mean that your firewall is timing out the connection and then bad things happen. | http://tomcat.apache.org/tomcat-6.0-doc/config/ajp.html -Tim - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Does user's network connection speed affect response time loggedby AccessLogValve (i.e. %D) ?
Hello, I'm sorry but... Does it mean that network connection speed effectively affect the response time logged by the AccessLogValve ? Something is still unclear for me, I'm afraid. Regards, Pierre On Wed, Jun 10, 2009 at 7:40 PM, Caldarale, Charles R chuck.caldar...@unisys.com wrote: From: Tim Funk [mailto:funk...@apache.org] Subject: Re: Does user's network connection speed affect response time loggedby AccessLogValve (i.e. %D) ? AccessLogValve cannot log until the request is done. Done meaning that the Servlet is done writing its content. There's also the issue that the servlet cannot complete until the client has finished sending all of its content for the request. In the case of something large, such as a file upload, the timer could have started long before all the content was received. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. -- Sans amis était le grand maître des mondes, Eprouvait manque, ce pour quoi il créa les esprits, Miroirs bienveillants de sa béatitude. Mais au vrai, il ne trouva aucun égal, Du calice du royaume total des âmes Ecume jusqu'à lui l'infinité. (Schiller, l'amitié)
SV: Why do stacktraces from servlets print to stdout, when the other end up in the log4j -log file?
My bad, I did not debug my servlet properly. If had done that earlier I would
have seen that it was the extraction of the exception from the request object
that failed.
When running the webapp in Weblogic as we did earlier, the following code
worked as expected and the exception was properly fetched:
Object obj = request.getAttribute(javax.servlet.jsp.jspException);
When the webapp is running in Tomcat (version 6.0.18, running on Windows server
2003 as a service, standard package downloaded from Tomcat homepage, standard
Tomcat log settings) the call resulted in obj being set to null.
When I changed the code to,
Object obj = request.getAttribute(javax.servlet.error.exception);
... The exception is properly fetched and everyting works as expected also in
Tomcat
/Andreas
-Ursprungligt meddelande-
Från: Imner, Andreas [mailto:andreas.im...@kgk.se]
Skickat: den 10 juni 2009 11:09
Till: Tomcat Users List
Ämne: RE: Why do stacktraces from servlets print to stdout, when the other end
up in the log4j -log file?
Hi
The Servlet does not propegate the error. This perticular servlet is one we use
for handling unhandled exceptions and displaying an unexpected-error page to
the user.
_
From web.xml
servlet
servlet-nameexceptionHandler/servlet-name
servlet-classse.kgk.webshop.web.general.ExceptionHandlerServlet/servlet-class
init-param
param-nameerrorPageURL/param-name
param-valuegoto.do?forward=error/param-value
/init-param
load-on-startup3/load-on-startup
/servlet
servlet-mapping
servlet-nameexceptionHandler/servlet-name
url-pattern/error/url-pattern
/servlet-mapping
error-page
exception-typejava.lang.Throwable/exception-type
location/error/location
/error-page
The servlet code looks something like this
private static final Log log =
LogFactory.getLog(ExceptionHandlerServlet.class);
protected void doPost(final HttpServletRequest request, final
HttpServletResponse response)
throws ServletException {
try {
Throwable throwable = null;
( Some code to extract the throwable, the requestURI etc... )
log.error(Exception while handling request: + requestURI,
throwable);
request.getRequestDispatcher(errorPageURL).forward(request,
response);
} catch (final Throwable t) {
t.printStackTrace();
}
}
If we run the webapp in Weblogic, both the Exception while handling...
message and the stacktrace gets printed to the log file specified by log4j
If we run exactly the same webapp in Tomcat, the Exception while handling...
message is printed to the log4j -logfile but the stacktrace gets printed to
stdout.log!?!
Note that this only applies to log calls from within this servlet. Then doing
the exact same log4j-call from within one of our filter -classes, everything
works as expected.
I suspect something is different with the servlet load sequence or log settings
when using Tomcat, but what?
-Ursprungligt meddelande-
Från: Christopher Schultz [mailto:ch...@christopherschultz.net]
Skickat: den 9 juni 2009 21:57
Till: Tomcat Users List
Ämne: Re: Why do stacktraces from servlets print to stdout, when the other end
up in the log4j -log file?
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Andreas,
On 6/9/2009 3:31 PM, Imner, Andreas wrote:
My companys web application uses log4j 1.2.8 for logging and have
just recently switched from Weblogic to Tomcat 6.0.18.
Since the we switched to Tomcat, when we do some logging within a
servlet
private static final Log log =
LogFactory.getLog(ExceptionHandlerServlet.class);
log.error(some message, throwable);
The some message -line is written to the file specified by log4j,
but why does the stacktrace gets written to Tomcats stdout.log?
That depends on what else is going on in your servlet. If you let the
exception propagate (by re-throwing it or throwing a new exception) and
nobody else catches it, then Tomcat's request processing thread code
will catch it and log it to stdout.
This is our log4j.properties file
log4j.appender.A1=org.apache.log4j.RollingFileAppender
log4j.appender.A1.MaxBackupIndex=20
log4j.appender.A1.MaxFileSize=10MB
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%d{ABSOLUTE} %-5p %X{ak} [%c{1}]
%m%n
log4j.rootLogger=ERROR, A1
log4j.category.se=INFO
# All System.out.println is redirected to stdout logger, INFO level
log4j.category.stdout=INFO
# All System.err.println (includes Exception.printStackTrace() is redirected
to stderr logger, INFO level
log4j.category.stderr=INFO
The code you provided does not show any use of the stdout category,
but it
RE: Does user's network connection speed affect response time loggedby AccessLogValve (i.e. %D) ?
From: Pierre Goupil [mailto:goupilpie...@gmail.com] Subject: Re: Does user's network connection speed affect response time loggedby AccessLogValve (i.e. %D) ? Does it mean that network connection speed effectively affect the response time logged by the AccessLogValve ? In a word yes, but only for large transfers. If the servlet has to wait for more input from the client, that will count; if the output cannot be sent immediately due to congestion or the client not ACK'ing the transfers, that can also delay the servlet. Whether or not such conditions could occur depend mostly on what and how much you're receiving and sending. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers.
RE: Tomcat maxThreads Issue
From: Jones, Keven [mailto:keven.jo...@ncr.com] Subject: RE: Tomcat maxThreads Issue Connector port=8011 enableLookups=false protocol=AJP/1.3 redirectPort=8443 maxThreads=400 connectionTimeout=2/ The syntax is ok, but I'd have to look at the code to see if connectionTimeout applies to anything other than the first request coming through. (AJP connections are intended to be persistent.) - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat maxThreads Issue
What does your Apache access_log say at the time when tomcat threads are exhausted ? I had a very similar issue in my environment. The culprit turned out to be JkMount options. Apache was sending all requests, whether it is for static or dynamic content to tomcat. At the same time my tomcats locked up, I was seeing a lot of requests for static content(gifs in my case) in the apache access_log Setting up mod_jk to only send *.jsp to tomcats fixed the issue for me. From: Jones, Keven keven.jo...@ncr.com To: users@tomcat.apache.org users@tomcat.apache.org Sent: Wednesday, June 10, 2009 11:11:11 AM Subject: Tomcat maxThreads Issue Hello, I have Tomcat (can't figure out what version as the version.sh script is giving all kinds of errors) running on separate Linux servers. So an overview of my config is 1 web server, 4 app servers (tomcat), and 1 db server. We were seeing an increase in the httpd processes on the web server to the point where I had to increase the MaxClients on the apache 2 server to 2048. I finally figured out that the normal number of httpd daemons on the web server (50-100) was spiking due to tomcat processes stalling or going completely down. So I started looking at why tomcat was failing and I found this error message in the ACStarError.log : SEVERE: All threads (200) are currently busy, waiting. Increase maxThreads (200) or check the servlet status. So I checked the server.xml file and found the following: Connector port=81 protocol=HTTP/1.1 server=- maxThreads=600 connectionTimeout=2 redirectPort=443 / !-- Awele 20070402 For SSL Requests, processed non-SSL, due to Coyote SSL Accelerator -- !-- Connector port=443 address=10.5.3.9 protocol=HTTP/1.1 server=- secure=true maxThreads=600 connectionTimeout=2 / -- !-- Define a SSL HTTP/1.1 Connector on port 8443 This connector uses the JSSE configuration, when using APR, the connector should be using the OpenSSL style configuration described in the APR documentation -- !-- Connector port=8443 protocol=HTTP/1.1 SSLEnabled=true maxThreads=150 scheme=https secure=true clientAuth=false sslProtocol=TLS / -- So It looks like the maxThreads has already been increased to 600. The server has been rebooted and tomcat stopped/started multiple times. Again all servers are Red Hat 5.2. Is there an additional parameter that needs to be set in order for tomcat to actually increase the maxThreads ? Thank You Keven Jones
Consequences of Reusing Clustered JSESSIONID
Greetings~ I would like to reuse the JSESSIONID route betweened clustered tomcats... and I'm wondering if there are negative consequences for doing so. We have the following setup: 2 data centers... (d1 / d2) 2 apache mod_proxy_balance(ad1, ad2) 4 tomcat servers (td101, td102, td201, td202) --- sessions are replicated between both data centers (fortunately our application is light enough that this should be okay for our needs) d1 d2 | | ad1 ad2 / \ / \ td101 -- td102 -- -- td201 -- td202 Our clients are stuck to a particular tomcat server and data center upon logging in; however, if we need to perform maintenance... we switch everyone over to an up data center while we do maintenance on the down center. So, in normal operation... a client will always reconnect to td101. If we flip to maintenance mode... they'll be redirected to d2... HOWEVER our current... While at d2... they will ping/pong in between td201 and td202... (this is because apache a2 only has routes for td201 and td202... but not td101... therefore it doesn't know how to handle td101. Our application still works... it's just messy flip flopping between 2 tomcat servers for every request. I'm considering relabeling the routes as follows (td1, td2, td1, td2) d1 d2 | | ad1 ad2 / \ / \ td1 -- td2-- -- td1 -- td2 Is there any weird route collisions or problems in doing this? Do routes really have to be unique if our application controls which physical data center a customer connects to? Thanks! - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
What to upgrade?
Our management has directed us to upgrade our JRE to 1.5 from 1.4.2 because they have heard that 1.5 has better memory management features. I am doing my due diligence to present a plan on what it will take to get us there. The question is how do I approach this ... We have apache(2.0.59), Tomcat(5.0.30), and a few JVM based application processes. Tomcat and the application processes use the same JRE(1.4.2). - Is tomcat 5.0.30 supported with JRE 1.5? Is it as simple as updating the startup scripts with the new JRE path? - Should I be upgrading tomcat too since our version is not even supported(as per ? - What is the impact to the code? Is it all backward compatible and will work with the new JRE/tomcat version? - Where can I find a comparison of enhancements/improvements between various tomcat versions? I saw the change log but its just too vast for me to digest... - What is the impact to Apache/Mod_jk configurations? Chetan
Re: What to upgrade?
Chetan Chheda wrote: Our management has directed us to upgrade our JRE to 1.5 from 1.4.2 because they have heard that 1.5 has better memory management features. I am doing my due diligence to present a plan on what it will take to get us there. The question is how do I approach this ... We have apache(2.0.59), Tomcat(5.0.30), and a few JVM based application processes. Tomcat and the application processes use the same JRE(1.4.2). - Is tomcat 5.0.30 supported with JRE 1.5? Is it as simple as updating the startup scripts with the new JRE path? 5.0.30 will work with 1.5 *but* the 5.0.x branch is very old, has not been updated for a long time, is very unlikely to ever see another release and almost certainly has some significant un-patched security vulnerabilities. - Should I be upgrading tomcat too since our version is not even supported(as per ? Absolutely - see above. - What is the impact to the code? Is it all backward compatible and will work with the new JRE/tomcat version? You mat hit some issues with new keywords that were introduced. I remember enum was an issue for Tomcat. - Where can I find a comparison of enhancements/improvements between various tomcat versions? I saw the change log but its just too vast for me to digest... That is the best there is I am afraid. 5.0.x- 5.5.x was a re-factor for performance 5.5.x- 6.0.x was mainly a spec update Generally, the later the version, the more bugs that have been fixed. - What is the impact to Apache/Mod_jk configurations? On the httpd side, zero. For Tomcat you might need to tweak the connector config a little. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat hyperlink interpretation when including jsp file from another subdirectory
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 To whom it may concern, On 6/9/2009 5:10 PM, ledbettd wrote: Thanks for the help, Chris. The code in footer and header were just a list of HTML A links, not real JSP. I put the above code in for the first hyperlink in the header file and it worked from all directories. Excellent. So, we were hoping to migrate our code over to the new virtual setup without much editing. It appears that the context path will play more of a major role than it did on the default Tomcat installation where this was fine. Using the context path in all your links will make re-location *much* easier: just re-deploy to a different context path (say /foo/bar or even ROOT) and everything works without any changes. It's definitely worth migrating as you touch files. Even better: use a tag library like JSTL (or, if you use Struts, their s:url tag) that does everything for you. That way, your JSP code stays readable yet flexible. Actually, a weird think happened on the way to the ... I noticed that even though I only changed the first A link to the JSP format, the other links across the header suddenly were correct, even though they were still in the HTML A format. This was not an expected outcome and begs the question: Is there an easier way (read: work around with configuration files) to have the header HTML A links inside the JSP file be interpreted within the correct context from where ever inside this bcosite.com virtual host, without rewriting all the old code to proper JSP? The only thing I can think of is to use a base tag in your HTML documents. This is an ugly hack if you ask me, and it might not solve what I believe your original problem to be: that you were not using fully-qualified URLs in the first place. Good luck, - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkowFvgACgkQ9CaO5/Lv0PBO0ACgpSuFUBYfToCY+ANYm5PbN/ak PDIAoKD0gA3zc7YkqGyL3uqLDGn7nfvF =Coop -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: swallowOutput and service threads
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Chris, On 6/9/2009 10:22 PM, Christopher Piggott wrote: I will definitely try that. I also will consider using log4j's rotating file appender instead of the ConsoleAppender. The reason I didn't do this in the first place is permissions: I don't normally have webapps that are able to write their own files. I will have to think about this a little. Yeah, log4j is /much/ more robust than what Tomcat provides out of the box (through JULI). Note that you /can/ configure Tomcat to use log4j as well, so you can kind of do both :) I prefer log4j's rolling semantics, anyway (file is called foo.log until it is rotated to foo-2009-06-10.log, rather than juli's behavior which is to /always/ have the date in the file name ... that makes log watching difficult). There are also other options for log4j: your webapp doesn't necessarily need to log to a file... you can log to syslog - even on another machine: instant cluster log aggregation. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkowGD8ACgkQ9CaO5/Lv0PDnRACfU5SBCh4A14XimktKpdSGRZbX KRgAoJrvyNIggep7CqyN4DJOyNdMt2cF =LhbX -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: What to upgrade?
Chetan Chheda wrote: ... Disclaimer : The following statements are to be taken in a banking perspective (past bonuses are no guarantee for future ones); each situation is slightly different; my own Tomcat applications are not very sophisticated; my servers are not highly loaded; YMMV. Having done the same a couple of times, for me this was a relatively painless (and quick) upgrade, both for the JVM and for Tomcat (from Tomcat 4.1 to 5.5)(no point in stopping at 5.0). I have Tomcat 5.5 running with a JVM 1.6 and do not remember having encountered any problems with that either, so you might as well skip the JVM 1.5 also. I believe Tomcat 6 has quite a few more changes compared to 4.1, so you may not want to risk that in one step. Save your old tomcat/conf files somewhere for future reference, then install the new JVM and the new Tomcat, with the standard new conf files for the new Tomcat. Make sure it runs with some example webapp. Then /manually/ introduce the needed changes to the new configuration, one by one, on the base of your old conf files, and check after each change. Do /not/ try to keep your old configs for the new Tomcat, or you will end up with a mess. You might even be able to do this on the same server in parallel, as long as you change the ports of your Connector's. As for mod_jk, apart from making sure that the right Apache jk worker connects to the right Tomcat, I don't think that there are any real config changes required. The newer mod_jk have quite a few new options though, which you should probably at least have a look at. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: How to use a gzip javascript file in a webapp running under tomcat
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Bala, On 6/10/2009 8:37 AM, balachandra maddina wrote: I'm wondering if its possible to refer [to] a javascript file something like script ... src ='scriptfile.js.gz' in a html page where the script file is located in one of the tomcat webapps? Sure, you can do that. It just won't do what you expect it to. if not how to send a gzip javascript file to browser? any help would be appreciated. Try enabling gzip compression in the Connector. http://tomcat.apache.org/tomcat-6.0-doc/config/http.html#Standard%20Implementation Look for the compression attribute. You'll probably have to change the compressablemimeType setting from the default to include text/css. I don't think there's a way to trick Tomcat into using a pre-compressed image of a file in this way. Alternatively, you could probably do something like the following: create a servlet that does nothing but serve a file off the disk (you might even extend the DefaultServlet). Make sure that your servlet reads your gzip'd CSS file and serves it without modification, except to add a Content-Encoding header. Remember to ensure that the client has Accept-Encoding: gzip set in the request headers... otherwise you will be serving a file that the browser claims it can't read. Good luck, - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkowG2MACgkQ9CaO5/Lv0PC98ACgnQZ2/PKp5QgYsQJkTgPYGVep vKgAniqftK7UQndCyoax6Fb+pR3C+vwl =irZW -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: What to upgrade?
I just completed (last week actually) a migration from JDK 1.4.2/Tomcat 5.5 to JDK 1.6/Tomcat 6. In terms of backward-compatibility, we had a problem with our TagLib packages. They would not compile under with whatever version of the Servlet Spec accompanies JDK 1.6. Those were the only compatibility issues we encountered. On Wed, Jun 10, 2009 at 4:33 PM, André Warnier a...@ice-sa.com wrote: Chetan Chheda wrote: ... Disclaimer : The following statements are to be taken in a banking perspective (past bonuses are no guarantee for future ones); each situation is slightly different; my own Tomcat applications are not very sophisticated; my servers are not highly loaded; YMMV. Having done the same a couple of times, for me this was a relatively painless (and quick) upgrade, both for the JVM and for Tomcat (from Tomcat 4.1 to 5.5)(no point in stopping at 5.0). I have Tomcat 5.5 running with a JVM 1.6 and do not remember having encountered any problems with that either, so you might as well skip the JVM 1.5 also. I believe Tomcat 6 has quite a few more changes compared to 4.1, so you may not want to risk that in one step. Save your old tomcat/conf files somewhere for future reference, then install the new JVM and the new Tomcat, with the standard new conf files for the new Tomcat. Make sure it runs with some example webapp. Then /manually/ introduce the needed changes to the new configuration, one by one, on the base of your old conf files, and check after each change. Do /not/ try to keep your old configs for the new Tomcat, or you will end up with a mess. You might even be able to do this on the same server in parallel, as long as you change the ports of your Connector's. As for mod_jk, apart from making sure that the right Apache jk worker connects to the right Tomcat, I don't think that there are any real config changes required. The newer mod_jk have quite a few new options though, which you should probably at least have a look at. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: What to upgrade?
From: Chetan Chheda [mailto:chetan_chh...@yahoo.com] Subject: What to upgrade? Our management has directed us to upgrade our JRE to 1.5 from 1.4.2 because they have heard that 1.5 has better memory management features. I'll strongly reiterate what André mentioned: if you're moving up JVM levels, move to 1.6; going to 1.5 would be a waste of time these days. Many, many things are improved in 1.6 over 1.5. Contrary to André's suggestion, I would upgrade Tomcat to 6.0, bypassing 5.5. The configuration changes from 5.5 to 6.0 are miniscule, so you might as well use the active version of the product. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: What to upgrade?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 André, On 6/10/2009 4:33 PM, André Warnier wrote: Save your old tomcat/conf files somewhere for future reference, then install the new JVM and the new Tomcat, with the standard new conf files for the new Tomcat. Make sure it runs with some example webapp. Then /manually/ introduce the needed changes to the new configuration, one by one, on the base of your old conf files, and check after each change. +1 Also, note that Tomcat 5.5 and higher really /really/ */really/* want you to put your Context elements into yourapp/META-INF/context.xml instead of putting them into Tomcat's server.xml. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkowHUcACgkQ9CaO5/Lv0PDyEgCeITM9GNPk8rQHNFtfRsxx8vwS s3cAn3fBx+bijQIYPko/I3/UHam/EY6r =p6DD -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Consequences of Reusing Clustered JSESSIONID
this is because apache a2 only has routes for td201 and td202... but not td101... therefore it doesn't know how to handle td101. why don't you setup all four routes for a1 and a2. then use the mod_proxy_balancer lbset variable to set a preferred route, and problem will be solved Filip Theparanoidone Theparanoidone wrote: Greetings~ I would like to reuse the JSESSIONID route betweened clustered tomcats... and I'm wondering if there are negative consequences for doing so. We have the following setup: 2 data centers... (d1 / d2) 2 apache mod_proxy_balance(ad1, ad2) 4 tomcat servers (td101, td102, td201, td202) --- sessions are replicated between both data centers (fortunately our application is light enough that this should be okay for our needs) d1 d2 | | ad1 ad2 / \ / \ td101 -- td102 -- -- td201 -- td202 Our clients are stuck to a particular tomcat server and data center upon logging in; however, if we need to perform maintenance... we switch everyone over to an up data center while we do maintenance on the down center. So, in normal operation... a client will always reconnect to td101. If we flip to maintenance mode... they'll be redirected to d2... HOWEVER our current... While at d2... they will ping/pong in between td201 and td202... (this is because apache a2 only has routes for td201 and td202... but not td101... therefore it doesn't know how to handle td101. Our application still works... it's just messy flip flopping between 2 tomcat servers for every request. I'm considering relabeling the routes as follows (td1, td2, td1, td2) d1 d2 | | ad1 ad2 / \ / \ td1 -- td2-- -- td1 -- td2 Is there any weird route collisions or problems in doing this? Do routes really have to be unique if our application controls which physical data center a customer connects to? Thanks! - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: What to upgrade?
We are going to regression test it in non - prod environments. I agree with going to the latest version, but our application is only supported on 1.4.2 So I am thinking 1.5 would be a smaller jump than 1.6. Chetan From: Christopher Schultz ch...@christopherschultz.net To: Tomcat Users List users@tomcat.apache.org Sent: Wednesday, June 10, 2009 4:53:27 PM Subject: Re: What to upgrade? -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 André, On 6/10/2009 4:33 PM, André Warnier wrote: Save your old tomcat/conf files somewhere for future reference, then install the new JVM and the new Tomcat, with the standard new conf files for the new Tomcat. Make sure it runs with some example webapp. Then /manually/ introduce the needed changes to the new configuration, one by one, on the base of your old conf files, and check after each change. +1 Also, note that Tomcat 5.5 and higher really /really/ */really/* want you to put your Context elements into yourapp/META-INF/context.xml instead of putting them into Tomcat's server.xml. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkowHUcACgkQ9CaO5/Lv0PDyEgCeITM9GNPk8rQHNFtfRsxx8vwS s3cAn3fBx+bijQIYPko/I3/UHam/EY6r =p6DD -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Private JVM Heap Size
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Peter, On 6/10/2009 3:10 AM, Peter Crowther wrote: From: William Biggs [mailto:kc8...@gmail.com] I'm looking at a new web hosting they give Private JVM Heap Size what is the min jvm heap size would you go with ? It depends entirely on your application. Some apps can handle fairly high loads with under 100 Mbytes of heap; Definitely. We have a lean and mean application that, until recently, ran in a 64MiB heap just fine. We had to expand that heap once our user load increased beyond what 64Mib could handle. We don't have much in the way of caching in our app, so loads of memory is not necessary. If you can observe your existing application in production, take maybe a week's worth of GC data (either enable verbose GC or write a stupid-simply JSP that dumps heap info) and then graph it to see what your memory needs actually look like. You should see that, for your given load, a certain memory band looks like it will suffice. Shoot for somewhere 10-20% /over/ that figure to give yourself some breathing room and continue to watch your memory usage relative to your user load. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkowI1QACgkQ9CaO5/Lv0PCcTwCfXmL9PVoUWWEA0sS8/DPmaMw/ gGEAoJrNgZg48Nx44yUDRvgDsMpvMbAo =Tm4X -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Loading dynamically created content: An old chestnut but still a problem.
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Lyallex, On 6/10/2009 9:41 AM, Lyallex wrote: Fetching images from the database every time results in a clunky page load so I want to cache the images to disk the first time an item is accessed my cache manager checks the disk cache to see if images for that item are available. If not it loads them onto the disk. I'm interested: what db are you using, what is your network topology, and what kind of performance increase are you observing? Also, what code are you using to serve the bytes of the locally-cached files? DefaultServlet? I can't use symbolic links to place the imagecache outside the application space because I develop on Windows and deploy to Linux (historical, nothing I can do about it) This shouldn't matter: you should be able to write files anywhere you please. You don't have to be restricted to the deployment directory. What about writing to C:\imagecache or ~/imagecache? Also, on Windows, you might check out mklink.exe - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkowJeYACgkQ9CaO5/Lv0PASNwCfXxHdleZYBlVDr8ClI+seB/14 +qYAoKundWQ0c+HeYYD1J0xEVSGwhMX0 =9PcM -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Consequences of Reusing Clustered JSESSIONID
Hi Filip~ That is an interesting possible solution (seems easy too). I will give that a try. Thank you for the quick response. Cheers! - Original Message From: Filip Hanik - Dev Lists devli...@hanik.com To: Tomcat Users List users@tomcat.apache.org Sent: Wednesday, June 10, 2009 1:57:26 PM Subject: Re: Consequences of Reusing Clustered JSESSIONID this is because apache a2 only has routes for td201 and td202... but not td101... therefore it doesn't know how to handle td101. why don't you setup all four routes for a1 and a2. then use the mod_proxy_balancer lbset variable to set a preferred route, and problem will be solved Filip Theparanoidone Theparanoidone wrote: Greetings~ I would like to reuse the JSESSIONID route betweened clustered tomcats... and I'm wondering if there are negative consequences for doing so. We have the following setup: 2 data centers... (d1 / d2) 2 apache mod_proxy_balance(ad1, ad2) 4 tomcat servers (td101, td102, td201, td202) --- sessions are replicated between both data centers (fortunately our application is light enough that this should be okay for our needs) d1 d2 | | ad1 ad2 / \ / \ td101 -- td102 -- -- td201 -- td202 Our clients are stuck to a particular tomcat server and data center upon logging in; however, if we need to perform maintenance... we switch everyone over to an up data center while we do maintenance on the down center. So, in normal operation... a client will always reconnect to td101. If we flip to maintenance mode... they'll be redirected to d2... HOWEVER our current... While at d2... they will ping/pong in between td201 and td202... (this is because apache a2 only has routes for td201 and td202... but not td101... therefore it doesn't know how to handle td101. Our application still works... it's just messy flip flopping between 2 tomcat servers for every request. I'm considering relabeling the routes as follows (td1, td2, td1, td2) d1 d2 | | ad1 ad2 / \ / \ td1 -- td2-- -- td1 -- td2 Is there any weird route collisions or problems in doing this? Do routes really have to be unique if our application controls which physical data center a customer connects to? Thanks! - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Loading dynamically created content: An old chestnut but still a problem.
Christopher Schultz wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Lyallex, On 6/10/2009 9:41 AM, Lyallex wrote: Fetching images from the database every time results in a clunky page load so I want to cache the images to disk the first time an item is accessed my cache manager checks the disk cache to see if images for that item are available. If not it loads them onto the disk. I'm interested: what db are you using, what is your network topology, and what kind of performance increase are you observing? Also, what code are you using to serve the bytes of the locally-cached files? DefaultServlet? I can't use symbolic links to place the imagecache outside the application space because I develop on Windows and deploy to Linux (historical, nothing I can do about it) This shouldn't matter: you should be able to write files anywhere you please. You don't have to be restricted to the deployment directory. What about writing to C:\imagecache or ~/imagecache? And what about storing your images entirely outside of the db, as simple files, and only keeping a link in the db ? That would allow *any* cache mechanism to work in a much simpler fashion (including the browser's), and would probably immensely unload your db software, which right now has to handle big blob data in each record. It would also allow asynchronous mechanisms (like sendfile) to handle the sending of these images much more efficiently. Not even considering the time you'd gain in db maintenance operations. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: What to upgrade?
actually no. 1.5 added many language features. 1.6 added administration and management features (and override annotation for interfaces). The jump 1.4.2 - 1.5 will be exactly the same as 1.4.2 - 1.6. Btw, to reply to your initial post, the memory management is really really really better in 1.5 (say garbage collector), so your management heard right things this time. regards Leon On Wed, Jun 10, 2009 at 11:07 PM, Chetan Chhedachetan_chh...@yahoo.com wrote: We are going to regression test it in non - prod environments. I agree with going to the latest version, but our application is only supported on 1.4.2 So I am thinking 1.5 would be a smaller jump than 1.6. Chetan From: Christopher Schultz ch...@christopherschultz.net To: Tomcat Users List users@tomcat.apache.org Sent: Wednesday, June 10, 2009 4:53:27 PM Subject: Re: What to upgrade? -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 André, On 6/10/2009 4:33 PM, André Warnier wrote: Save your old tomcat/conf files somewhere for future reference, then install the new JVM and the new Tomcat, with the standard new conf files for the new Tomcat. Make sure it runs with some example webapp. Then /manually/ introduce the needed changes to the new configuration, one by one, on the base of your old conf files, and check after each change. +1 Also, note that Tomcat 5.5 and higher really /really/ */really/* want you to put your Context elements into yourapp/META-INF/context.xml instead of putting them into Tomcat's server.xml. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkowHUcACgkQ9CaO5/Lv0PDyEgCeITM9GNPk8rQHNFtfRsxx8vwS s3cAn3fBx+bijQIYPko/I3/UHam/EY6r =p6DD -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Loading dynamically created content: An old chestnut but still a problem.
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Lyallex, On 6/10/2009 1:10 PM, Lyallex wrote: img src=ImageProxy?%=WebConstants.IMAGE_ID%=%=p.calculateImageId()%... etc '/ This gets the image from the database and displays it in the page. This is clunky and slow and the image is not cached by the browser You might want to set some caching headers, etc. if you want the browser to cache the image. You'll have the same problem with locally-cached files if you don't do this (DefaultServlet, which it sounds like you're using, probably sets these headers appropriately). Anyway, I'm currently looking at the serveResource() method in the DefaultServlet... Multiple posts to this list seem to contradict Hassan's assertion that this should work: the DefaultServlet appears to ignore files that are created post deployment (or at least, post directory-read). This is either due to the servlet itself or the (IIRC) JNDI context used by the DefaultServlet to read the files. I would recommend serving the bytes using your own servlet rather than the DefaultServlet. That way, you free yourself from these apparent directory-caching issues, plus you can (more) easily move your image cache out of your deployment directory (if you care). - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkowMzYACgkQ9CaO5/Lv0PBFhACdFH4WalukRH68QqDgwStOM5sm 4hMAnApwfMGuF2xUuXGOw2Z/7o9WFy2X =WUup -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Loading dynamically created content: An old chestnut but still a problem.
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Lyallex, On 6/10/2009 6:27 PM, Christopher Schultz wrote: I would recommend serving the bytes using your own servlet rather than the DefaultServlet. That way, you free yourself from these apparent directory-caching issues, plus you can (more) easily move your image cache out of your deployment directory (if you care). Scratch that... after reading André's response, I realized that you might not be able to (easily) use sendFile if you write the code yourself. Use of sendFile (for connectors that support it) for static content is strongly recommended for increased performance. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkowNBQACgkQ9CaO5/Lv0PDzZgCgo1oF8LB4X79tXpBmCSwcu3b7 IGcAnAvktD70TcaCeLzZDax1+YCEVnxQ =/nNl -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: What to upgrade?
Let me add some non-technical and subjective advice. I have kind of collected the impression over time here, that going from tomcat 5.5 to 6.x introduced at least some additional issues. (This being said totally subjectively by someone who does not really know what he's talking about, but just goes by what he reads.) Thus, while from a technical point of view, the jump from 4.2 to 6.0 may be less hassle in total than the sum of 2 consecutive jumps from 4.2 to 5.5 and then 5.5 to 6.0, it nevertheless remains that - management asked for 5.x, not 6.x. - if anything bad happens going from 4.2 to 5.x, it will have been done according to explicit management wishes - while if anything bad happens going from 4.2 to 6.x, it could be considered by some as having taken an unnecessary and unwarranted risk, beyond instructions - not counting the fact that the later step from 5.5 to 6.x, whilst being comparatively easier, would nevertheless require the allocation of new time and manpower resources at some future date, which could be considered a Good Thing in the current depressionary climate Have I qualified for a government or consultancy job yet ? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: What to upgrade?
From: André Warnier [mailto:a...@ice-sa.com] Subject: Re: What to upgrade? Have I qualified for a government or consultancy job yet ? Only for the not quite gone Mr Brown's cabinet... - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: What to upgrade?
Caldarale, Charles R wrote: From: André Warnier [mailto:a...@ice-sa.com] Subject: Re: What to upgrade? Have I qualified for a government or consultancy job yet ? Only for the not quite gone Mr Brown's cabinet... I realise a posteriori that I should have qualified the previous advice. To the OP thus, please amend my previous advice as follows : if you happen to be US-based, and if management asks whether you can go directly from 4.2 to 6.0, the appropriate answer would be : Yes, we can ! - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: What to upgrade?
Leon Rosenberg wrote: actually no. 1.5 added many language features. 1.6 added administration and management features (and override annotation for interfaces). And they both added big performance improvements over older ones. D - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: What to upgrade?
Chetan Chheda wrote: We are going to regression test it in non - prod environments. I agree with going to the latest version, but our application is only supported on 1.4.2 So I am thinking 1.5 would be a smaller jump than 1.6. I doubt it. If it will run on 1.5 (which it most likely will), it will run on 1.6. The jump from 1.4 to 1.5 is much bigger than the one from 1.5 to 1.6. I moved my app from TC 5.5.15 running under jvm 1.5.0_12 directly to TC 6.0.17 or .18 (I don't recall which) under jvm 1.6.latest, and it ran absolutely unchanged except that it was much faster (could handle more concurrent requests). Exactly zero code changes required in over 300 classes. The initial jump from 1.4.something to 1.5 was quite painless as well, but I wanted some of the new code features in 1.5, so I never did extensive testing under of the 1.4 code until I had my 1.5 modifications done. D - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat maxThreads Issue
Caldarale, Charles R chuck.caldar...@unisys.com wrote in message news:0aae5ab84b013e45a7b61cb66943c17228fc438...@usea-exch7.na.uis.unisys.com... From: Jones, Keven [mailto:keven.jo...@ncr.com] Subject: RE: Tomcat maxThreads Issue Connector port=8011 enableLookups=false protocol=AJP/1.3 redirectPort=8443 maxThreads=400 connectionTimeout=2/ The syntax is ok, but I'd have to look at the code to see if connectionTimeout applies to anything other than the first request coming through. (AJP connections are intended to be persistent.) No, connectionTimeout applies to all requests. Any time that the Connector thread doesn't hear from httpd within 20 seconds (with this configuration) it will hang up and return to the pool. Note: this value also applies to reads from the request body. But I think almost all connections can send the default 8Kb in 20 seconds. The value for connectionTimeout looks low except for high-traffic sites (would go for something more like 5 minutes for a moderate traffic site). That would allow traffic spikes to die out without forcing unnecessary reconnections. You may also want to configure cping/cpong on the Apache side to aid mod_jk to detect that the connection has timed out. - Chuck - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Stable tomcat release
We are currently using tomcat 6. How do I determine the most recent stable release of tomcat. I am looking at upgrading our tomcat with most recent stable release. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Using tomcat as standalone
Hi There, Im wondering what are the performance implications of using tomcat as standalone? many suggested to use the tomcat along with IIS. but im not sure why is this required? could somebody help me on this please. Thank you, bala.
RE: Using tomcat as standalone
From: balachandra maddina [mailto:chandu2...@gmail.com] Subject: Using tomcat as standalone Im wondering what are the performance implications of using tomcat as standalone? many suggested to use the tomcat along with IIS. but im not sure why is this required? Front-ending Tomcat with IIS would create a lot of extra overhead and administrative workload - don't do it unless you're already using IIS as your primary web server for the domain of interest. Tomcat does very well at serving static content by itself these days (better than IIS). If you're using SSL and have stringent performance requirements, consider installing the APR native library with Tomcat; this uses OpenSSL rather than the Java libraries and is noticeably faster. APR may get you a performance improvement for non-encrypted requests as well, but you'd have to measure your webapps with it to be sure. Use the latest Tomcat (6.0.20) and JVM (6u14) in server mode for the best performance starting point; use a 64-bit version of the JVM if you need the heap space and your platform supports it. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Stable tomcat release
From: Mohit Anchlia [mailto:mohitanch...@gmail.com] Subject: Stable tomcat release We are currently using tomcat 6. How do I determine the most recent stable release of tomcat. I am looking at upgrading our tomcat with most recent stable release. Well, let's take a peek at the Tomcat home page. Oh look, it says: For the impatient, current Apache Tomcat production quality releases vs. Servlet/JSP specifications: Servlet/JSP Spec Apache Tomcat version 2.5/2.1 6.0.20 You might consider subscribing to the tomcat-announce mailing list: http://tomcat.apache.org/lists.html#tomcat-announce This will insure you see all of the pertinent release announcements and security bulletins. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Loading dynamically created content: An old chestnut but still a problem.
Christopher Multiple posts to this list seem to contradict Hassan's assertion that this should work: the DefaultServlet appears to ignore files that are created post deployment (or at least, post directory-read). This is exactly what is happening, the DefautServlet Ignores any file that appears in the application space after the server is started Others who have replied to my original post appear to have no problem serving up images that have been uploaded after server startup ... I appear to have multiple issues here. Rather that 'hijack' my own thread, I'll start a new one for each issue then return here when I know exactly what the problem is. I hope this doesn't upset too many people. Rgds lyallex - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Dynamic Resources: getRealPath() returns the 'wrong' path
Hi apache-tomcat-6.0.16 jdk1.6.0_03 Dev box : Windows Deployment box: Linux I have my server installed at C:\servers\tomcat\apache-tomcat-6.0.16\ My application is installed at C:\servers\tomcat\apache-tomcat-6.0.16\webapps\ROOT I have an image cache available at C:\servers\tomcat\apache-tomcat-6.0.16\webapps\ROOT\imagecache In a servlet I do the following String pathToImagecache = getServletContext().getRealPath(imagecache); logger.log(Level.INFO, The path to the image cache is + pathToImagecache); The logging output gives the following INFO: The path to the image cache is C:\servers\tomcat\apache-tomcat-6.0.16\temp\1-ROOT\imagecache I need to get hold of the imagecache directory to write images to it but I have no idea what this \temp\1-ROOT\ bit of the path all about ??? The only way I can get the correct path at the moment is to set up an EV in context.xml then do a JNDI lookup in my site cooker and save the value to my config server... I'd much rather use getRealPath as I don't have to change the config when I deploy to live. I'm confused, any help much appreciated lyallex - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
