Easy Servlet Question
Hello. I realize this is about the stupidest question I could ask but, I've scoured the web, etc. and cannot get an easy example of making servlets actually work with Tomcat. I have written a few Hello World servlets and gotten them to work with Resin but I cannot get even the most simple servlet to work with Tomcat. I create the servlet code such as the one found here: http://www.caucho.com/resin-3.0/servlet/tutorial/helloworld/index.xtp I compile the servlet and place the .class file in the $CATALINA_HOME/webapps/app/WEB-INF/classes directory. Then I modify the $CATALINA_HOME/webapps/app/WEB-INF/web.xml to include the declarations for the servlet. I stop and restart Tomcat and alas, all I get is 404 when I try to access the servlet with a url like http://localhost:8080/app/HelloServlet. I know this has got to VERY simple. Thanks in advance. Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Easy Servlet Question
OK. This was a bit of a simple one. Found my answer with the help of a couple of folks on IRC. Please disregard. Andrew Pierce wrote: Hello. I realize this is about the stupidest question I could ask but, I've scoured the web, etc. and cannot get an easy example of making servlets actually work with Tomcat. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
jsvc question
I am new to Tomcat, and this is basic question. I have jsvc setup to start Tomcat, and then run as user wwwadmin on port 80. When I execute, I get two processes running, a parent running as root, and the child as the wwwadmin user. Is this normal? I thought the root process was supposed to go away after setting up the listen connection on port 80. -Andrew Stueve - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: mod_jk performance
Hi Peter, That is why I mentioned it. We deliver our static content from other servers, and had originally considered hiding our TCs behind apache for 'security reasons'. After seeing the speed difference, and the fact that their isn't really a security difference if you just push all the traffic straight through anyway, we decided not to put Apache between our users and our Tomcat servers. If I didn't need to use re-writes, and complicated rules on our apaches, I would also use THTTP for performance reasons. Andrew On Sep 16, 2005, at 3:39 PM, Peter Flynn wrote: OK, that's useful information. But I have 300,000+ static HTML files to server, and about 10 JSP files. I'm surely not switching my entire server to Tomcat...:-) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: mod_jk performance
Apache is easier to configure, but at a 50% performance hit for pure JSP pages Andrew On Sep 14, 2005, at 2:18 PM, KEREM ERKAN wrote: Apache has better directory/file restricting and handling than Tomcat, it is more customizable and it is much user/admin friendly to configure :-) (at least for me) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: mod_jk performance
We did some comparisons between running Tomcat 5.0 standalone, or TC 5.0 and Apache 2.0 If you are ONLY delivering JSPs, we found that we could only deal with 50% of the requests when running combined Apache TC and mod_jk Andrew On Sep 14, 2005, at 2:45 PM, Lionel Farbos wrote: I use Apache/mod_jk/Tomcat for a long time on production servers with load balancing/failover (and with high traffic sites) and I'm sure it's not 30% slower than a pure Tomcat. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: mod_jk performance
We run F5 BigIPs as our loadbalancers, and have seperated images, etc onto another server IE: i.domain.com for images, and www.domain.com for dynamic content. F5 provides a feature call iRules to do the splitting between hosts for you, but I would NOT use this on a high traffic site. Andrew On Sep 14, 2005, at 2:58 PM, Lionel Farbos wrote: But, in a web site, there is never only JSPs : there is a lot of static files (images, css, js, ...) So, if you don't have a apache in the frontend to deliver theses static files, there is an overload for the TC server... So, your tests stressed only light JSPs or a real site ? and what is your solution for load-balancing/failover ? On Wed, 14 Sep 2005 14:50:52 +0200 Andrew Miehs [EMAIL PROTECTED] wrote: - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: problems setting up tomcat on debian sarge
Hi Martin, I have tomcat 5.0.25 - 30 running on Sarge without a problem. Sun JVM 1.42r5 and greater. The orginal poster seems to have a problem with his application as manager applets etc work. I would however recommend running a 2.6 kernel Andrew On Sep 13, 2005, at 3:37 PM, Martin Wood wrote: I struggled with running tomcat5 on sarge for a while and found that the blackdown jvm was the only one that seemed to work properly. I had great problems using the Sun JVM (there was a thread on here about 6 weeks ago) whereby tomcat would just stop responding, and refuse to shutdown unless i killed the process. I've not had any problems since switching to blackdown. If you are going to try tomcat 5.5 then you'll need to remember to install the compatibility patch for using a 1.4 jvm. thanks, Martin Sébastien GALLET wrote - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Does Tomcat work on dual processor systems?
Hi Asha, Asha Nallana wrote: We are using Tomcat4.1.18, JDK1.4.2, Apache1.3 and mod_jk2. And somewhere you mentioned Redhat 7.3. Isn't that VERY old? can you provide the output of uname -a ps auxw netstat -anp and probably server.xml Does this setup work? Did it ever work? or are you trying to get it to work for the first time? I would seriously suggest though, that you get someone in to help you look at this problem, as it sounds like you may require quite a bit of help to get it up and running - (probably about 3 weeks of using this mailing list) Regards Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Securityfilter for authentication
Hi Mark, I'm using SecurityFilter in my application successfully . What are your questions? Regards, -- Andrew Stepanenko, Software engineer, Ukrainian-Dutch Faculty of Economics and Management Ternopil State Economic University Shevchenko Street 9, Office 24-25 Ternopil, 46000 UKRAINE Tel: +38 (0352) 43 52 41 fax: +38 (0352) 43 52 45 Web: http://unf.tane.edu.ua Mark Goking wrote: Has anyone here used securityfilter for authetntication? The samples doesn't have any database realm example. If anyone got this working using db for authetnication pls let me know, I would like to ask some questions thanks - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Max thread/session timeouts
Ouch! Thats a LOT of threads - I can't believe your box still performs well with this many threads - or have you enabled keep-alives? The number of threads really depends on your application. I have max threads set to 750, or our 32bit 2.6 Linux systems. Our thread count normally doesn't go over 200. When the servers need to wait for the backend, and the requests start to queue (heading towards 1000) - you will end up with a huge problem anyway, as it is probably unlikely that your backend servers/ database, etc, will be able to catch up with the requests, but as I said, that depends how and what your application does. Andrew J. Ryan Earl wrote: As a reference, in conf/server.xml I set my thread limit to 1 max threads, 1000 max idle threads, and 100 on startup. I've seen my as many as 7K threads busy within my application. This is on a 32bit 2.6 Linux kernel with 2GB of RAM (-Xmx1500m). On the 2.4 kernel I found practical limitations in how many threads the kernel could multiplex between, saw frequent system hangs under high load where the whole server would become unusable. On either linux kernel, you probably want to increase your maximum number of file descriptors in /etc/security/limits.conf for your Tomcat user account(s). 16K nofile as default works great for me. How much more memory you need really depends on your application. 500 threads isn't that much memory overhead, but if each thread goes off and creates a bunch of objects while it's working you'll need to assure heapspace is available accordingly. The short answer is: try it out, play with it. 500 threads isn't a whole lot. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Rc3.d startup scripts
That really depends on the operating system. You may also want to have a look at google On Jun 17, 2005, at 8:34 PM, [EMAIL PROTECTED] wrote: I am trying to create a startup script for Solaris for both Tomcat 5.5.9 and Apache 2.0.52. Can anyone tell me how to do that, so that when the box is rebooted it automatically starts Tomcat and Apache.
Re: IE-Page not found problem
Hi, IMHO the best solution is to run tcpdump (or ethereel) on the server, and log the IE users traffic (and try to limit it to only 1 user as you seem to indicate that you can easily reproduce the problem). That will show you exactly what is going on. Anything else is just speculation. Regards Andrew sudip shrestha wrote: I have no idea why you are continuing on this pathBut all I am looking for is suggestions on how to debug this problem with IE, if there is any. I am not offerring any excuse!! It's my work related work. I have had few issues with IE in the past such as url redirection problem but I have managed to find the fix for those. So, I was thinking maybe somebody in the users list have had some kind of positive experience with this in the past. Frank's suggestion on this regard was constructive. I work in a huge company...suddenly asking users to change the browser is not exactly the pratical solution either. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Cache CPU utilisation problems on Tomcat 5.5.7 on Windows 2003
Hi, I am a complete newbie to Tomcat so please forgive me... I have two problems: 1. Cache - Tomcat will cache everything to /temp and even when the underlying content (images or pages) are changed, it will not refresh. I have to stop the server, delete all files in the /temp directory and then restart Tomcat to get the new content delivered to the browser. This cache can build in size to gigabytes. 2. CPU utilisation - Tomcat often hits 99% CPU and just stays there until the server just comes to a grinding halt. This could of course be a coding issue in a JSP or what have you, but my error logs are not pointing to anything unusual. Has anyone else had similar experiences? Do you have any tips for me? Thank you, your help is appreciated. Cheers, Andrew
Re: tomcat jsessionid
Are you load balancing? or do you have two different applications on two different servers? The cookie is attached to the host name. Therefore you will have two JSESSIONIDs One cookie: hostA:JESSIONID and the other hostB:JESSIONID Or do both hosts A and B have BOTH applications? IE: Can someone access http://hostA/abc and https://hostA/abc ? - If so - and these are two different appications - you will have problems. Andrew On May 16, 2005, at 4:54 PM, Millie Morton wrote: As a systems admin I've set up the following apache-2.0.54 tomcat-5.0.28 We are loadbalancing (tomcat) 2 different applications with the same path, one under SSL on hostA and the other unsecure on hostB. Application A: http:/hostA/abc Application B: https:/hostB/abc The problem is: if a user goes to Application A (on hostA) first and then to Application B (on hostB) we are seeing apache log entries with 2 JSESSIONIDS, one from hostA and one from hostB. This makes for stickiness problems as you can imagine. Is there a way to fix this without changing the path for one of the apps? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: SSL, Form Authentication 408 error
I have resolved this problem, and as is so often is the case (certainly with me anyway) the cause of this wasn't what it initially appeared. Anyway I thought I'd share my findings in case anyone else came across this problem. This is an IE specific problem relating to IFRAMES and nothing to do with Tomcat. A look at the AuthenticatorBase code lead me to believe the only thing that could actually cause the 408 is if the session could not be located. This is looked up from the session id in the request. It was a fair guess that something was happening to the session id cookie when the request came as the result of an IFRAME. A little investigation with the Privacy controls in IE fixed the problem. It seems the cookie settings are different to pages in IFRAMES than top level pages. In order to get this working the global privacy level must be dropped (specifically to Always allow session cookies) or (probably more advisable) add the app url to the Manged Sites from the Advanced tab with Always Allow -Original Message- From: Andrew Chapman [mailto:[EMAIL PROTECTED] Sent: 03 May 2005 10:29 To: tomcat-user@jakarta.apache.org Subject: SSL, Form Authentication 408 error If I set the src of an IFRAME to my web application, which uses Form Authentication and SSL, the server consistently throws back a 408 error in IE when attempting to log in. The same scenario consistently works with Firefox. I suspect there are timing issues with IE, IFRAMEs and Form Authentication causing the 408. I have searched the archives without success and a more general search seems to indicate that there are issues with IFRAMEs and SSL in IE but no specifics. My question is: Does anyone know of a way to configure Tomcat (5.0.28) to be more resilient/permissive i.e. to increase the timeout for Form Authentication before a 408 error is thrown? Thanks in advance Andy Chapman - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
SSL, Form Authentication 408 error
If I set the src of an IFRAME to my web application, which uses Form Authentication and SSL, the server consistently throws back a 408 error in IE when attempting to log in. The same scenario consistently works with Firefox. I suspect there are timing issues with IE, IFRAMEs and Form Authentication causing the 408. I have searched the archives without success and a more general search seems to indicate that there are issues with IFRAMEs and SSL in IE but no specifics. My question is: Does anyone know of a way to configure Tomcat (5.0.28) to be more resilient/permissive i.e. to increase the timeout for Form Authentication before a 408 error is thrown? Thanks in advance Andy Chapman - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: What is max value for MaxThreads
Hi Darek, This really depends on your operating system We have MaxThreads set to 750 on our boxes running sarge. You should however be aware that using that many threads in not necessarily benifical as far as performance is concerned... You should definitely do some performance testing. We looked at using apache with mod_jk in front of our tomcats, but this effectively halved the number of connections our servers could handle per second, so in the end, we went back to using the standard http connector from tomcat. Andrew Darek Czarkowski wrote: How many threads can tomcat handle? Assuming single tomcat hosting 5 different apps, no load balance, using mod_jk and Apache. I am wondering what would be the safe limit. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
FileUpload
Hi, I am trying to use FileUpload but i keep getting an Access denided error when i try to write things and i was wondering is there anyway around it...here is the error Http Satus 404 - C:\AtrowkOnDemand\jakarta-tomcat-4.1.24\webapps\artworkondemans (Access is denied) type Status report message C:\ArtworkOnDemand\jakarta-tomcat-4.1.24\webapps\artworkondemand (Access is denied) description The requested resource (C:\ArtworkOnDemand\jakarta-tomcat-4.1.24\webapps\artworkondemand (Access is denied)) is not available. Any suggestions woudl be greatly appreciated Andrew Paliga Junior Project Manager IBM Toronto Media Design Studio Phone: (905) 413-2024
Re: Tomcat with PHP?
Dear Cameron, You will need to use Apache with PHP, and use the Tomcat/ Apache connector so that apache pushes the requests through to tomcat (jkmod) Effectively you will have 2 seperate applications, and use the URLs/ browser requests to talk with each other Andrew Cameron Sim wrote: Does Tomcat support PHP scripting? Ive tried installing PHP 4 5 but with no joy. I know Apache 2 supports PHP but what setup would I need to support JSP/Servlets and PHP? Hope you can help? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to read JNDI resources?
Hi Vaneet Thanks for the reference. I'm a little confused though, what are you referring to in this page that I should read? I can't see anything that explains how the context element is used. Thanks Andrew Vaneet Sharma wrote: U need to read this page http://jakarta.apache.org/tomcat/tomcat-5.5-doc/appdev/deployment.html Have fun reading Vaneet -Original Message- From: Andrew Watters [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 06, 2005 6:14 PM To: Tomcat Users List Subject: Re: How to read JNDI resources? Thank you, I appreciate your reply. I didn't have a context entry so I added a minimal one (copied from the /examples one) before proceeding further as shown below. Context path=/xxx docBase=xxx debug=0 reloadable=true crossContext=true / Unfortunately tomcat doesn't start now. I get a 'Document base C:\Development\Java\jakarta-tomcat-4.1.31\webapps\xxx does not exist or is not a readable directory' So I added a direcory xxx. Now tomcat starts ok but it doesn't unpack the xxx.war. Again I'm probably making some very simple mistake but can't see the problem or an answer in the docs or by googling... Mark Thomas wrote: You need to include a ResourceLink element in your context. Mark Andrew Watters wrote: Using tomcat 4.3.1 I have included the following in server.xml GlobalNamingResources Environment name=config_file type=java.lang.String value=test/ /GlobalNamingResources In a servlet loaded on startup I try to read in the property InitialContext ic = new InitialContext(); Context ctx = (Context) ic.lookup(java:comp/env); String configFilename = (String)(ctx.lookup(config_file)); This code throws a NamingException. Where have I gone wrong? Thanks Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Vaneet Sharma executive manager iDeasTank Limited an iwg business dolphins' court po 388 valletta, m-malta/europe mobile: +356 9943 8263 skype: CALLVANEET fax: +356 9952 phone: +356 9942 [EMAIL PROTECTED] call me on www.skype.com - my ID is CALLVANEET Want a signature like this? - www.plaxo.com\signature iwg is a global e-mobile company creating, building and growing new businesses. iwg founders are pioneers in creating multi-billion dollar mobile and Internet businesses in Europe, Asia and the US. www.iWG.info www.countryprofiler.com/iWG www.visitmalta.com www.mfc.com.mt Privileged/Confidential Information may be contained in this message. If you are not the addressee indicated in this message (or responsible for delivery of the message to such person), you may not copy or deliver this message to anyone. In such case, you should destroy this message and kindly notify the sender by reply email. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to read JNDI resources?
Have found a couple of solutions. Set the docbase to point to the WAR. Context path=/xxx docBase=xxx.war debug=0 reloadable=true crossContext=true / OR manually unpack the WAR after upload. And the JNDI part works fine now :) Andrew Watters wrote: Hi Vaneet Thanks for the reference. I'm a little confused though, what are you referring to in this page that I should read? I can't see anything that explains how the context element is used. Thanks Andrew Vaneet Sharma wrote: U need to read this page http://jakarta.apache.org/tomcat/tomcat-5.5-doc/appdev/deployment.html Have fun reading Vaneet -Original Message- From: Andrew Watters [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 06, 2005 6:14 PM To: Tomcat Users List Subject: Re: How to read JNDI resources? Thank you, I appreciate your reply. I didn't have a context entry so I added a minimal one (copied from the /examples one) before proceeding further as shown below. Context path=/xxx docBase=xxx debug=0 reloadable=true crossContext=true / Unfortunately tomcat doesn't start now. I get a 'Document base C:\Development\Java\jakarta-tomcat-4.1.31\webapps\xxx does not exist or is not a readable directory' So I added a direcory xxx. Now tomcat starts ok but it doesn't unpack the xxx.war. Again I'm probably making some very simple mistake but can't see the problem or an answer in the docs or by googling... Mark Thomas wrote: You need to include a ResourceLink element in your context. Mark Andrew Watters wrote: Using tomcat 4.3.1 I have included the following in server.xml GlobalNamingResources Environment name=config_file type=java.lang.String value=test/ /GlobalNamingResources In a servlet loaded on startup I try to read in the property InitialContext ic = new InitialContext(); Context ctx = (Context) ic.lookup(java:comp/env); String configFilename = (String)(ctx.lookup(config_file)); This code throws a NamingException. Where have I gone wrong? Thanks Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Vaneet Sharma executive manager iDeasTank Limited an iwg business dolphins' court po 388 valletta, m-malta/europe mobile: +356 9943 8263 skype: CALLVANEET fax: +356 9952 phone: +356 9942 [EMAIL PROTECTED] call me on www.skype.com - my ID is CALLVANEET Want a signature like this? - www.plaxo.com\signature iwg is a global e-mobile company creating, building and growing new businesses. iwg founders are pioneers in creating multi-billion dollar mobile and Internet businesses in Europe, Asia and the US. www.iWG.info www.countryprofiler.com/iWG www.visitmalta.com www.mfc.com.mt Privileged/Confidential Information may be contained in this message. If you are not the addressee indicated in this message (or responsible for delivery of the message to such person), you may not copy or deliver this message to anyone. In such case, you should destroy this message and kindly notify the sender by reply email. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
How to read JNDI resources?
Using tomcat 4.3.1 I have included the following in server.xml GlobalNamingResources Environment name=config_file type=java.lang.String value=test/ /GlobalNamingResources In a servlet loaded on startup I try to read in the property InitialContext ic = new InitialContext(); Context ctx = (Context) ic.lookup(java:comp/env); String configFilename = (String)(ctx.lookup(config_file)); This code throws a NamingException. Where have I gone wrong? Thanks Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to read JNDI resources?
Thank you, I appreciate your reply. I didn't have a context entry so I added a minimal one (copied from the /examples one) before proceeding further as shown below. Context path=/xxx docBase=xxx debug=0 reloadable=true crossContext=true / Unfortunately tomcat doesn't start now. I get a 'Document base C:\Development\Java\jakarta-tomcat-4.1.31\webapps\xxx does not exist or is not a readable directory' So I added a direcory xxx. Now tomcat starts ok but it doesn't unpack the xxx.war. Again I'm probably making some very simple mistake but can't see the problem or an answer in the docs or by googling... Mark Thomas wrote: You need to include a ResourceLink element in your context. Mark Andrew Watters wrote: Using tomcat 4.3.1 I have included the following in server.xml GlobalNamingResources Environment name=config_file type=java.lang.String value=test/ /GlobalNamingResources In a servlet loaded on startup I try to read in the property InitialContext ic = new InitialContext(); Context ctx = (Context) ic.lookup(java:comp/env); String configFilename = (String)(ctx.lookup(config_file)); This code throws a NamingException. Where have I gone wrong? Thanks Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
HttpSessionListener events after redeployment?
In my application I like to keep track of all the sessions that are currently active. So, I have a class that implements HttpSessionListener and have a static HashMap that keeps a reference to all the active sessions. Everything works great. I get the events, and can track them without any issues. My problem arises when I redeploy my application. My sessions serialize just fine, and recreate ok as well. However after redeployment, I have no references to the active sessions (since my static Map has been destroyed). Are there any events I can listen for when a session is recreated from serialization? I was hoping for HttpSessionListener.sessionCreated(), but that doesn't happen, and I can understand why. Maybe there is a cleaner way to get a reference to all of the sessions active on my server that will survive serialization? Thanks in advance! -Andrew
RE: HttpSessionListener events after redeployment?
That leads to an interesting point. There is no reason why I cannot populate that HashMap every time a request comes in. I was looking for events from Tomcat. But I can combine that with events from the user (requests for pages!). Good thinking! Thanks a lot! -Andrew -Original Message- From: Joe Riopel [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 05, 2005 4:30 PM To: Tomcat Users List Subject: Re: HttpSessionListener events after redeployment? Could you use the isNew() method from HttpSession ? On Apr 5, 2005 4:20 PM, Clute, Andrew [EMAIL PROTECTED] wrote: In my application I like to keep track of all the sessions that are currently active. So, I have a class that implements HttpSessionListener and have a static HashMap that keeps a reference to all the active sessions. Everything works great. I get the events, and can track them without any issues. My problem arises when I redeploy my application. My sessions serialize just fine, and recreate ok as well. However after redeployment, I have no references to the active sessions (since my static Map has been destroyed). Are there any events I can listen for when a session is recreated from serialization? I was hoping for HttpSessionListener.sessionCreated(), but that doesn't happen, and I can understand why. Maybe there is a cleaner way to get a reference to all of the sessions active on my server that will survive serialization? Thanks in advance! -Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat taking 125 seconds to launch
hmm - sounds like a dns lookup causing a problem Andrew On Apr 4, 2005, at 11:03 AM, t.n.a. wrote: Michael Mehrle wrote: The configuration is a modified version of appfuse 1.5 (struts and hibernate) - so this should give you a good idea of how it is structured. FYI: on my development machine here at home Tomcat starts in 28 seconds - identical project and configuration. A fairly long time, any way you cut it. It takes about 6-9s on my Athlon 1900+ (using JDK 1.5), and a couple of seconds more on my laptop (even though the laptop has a 2.8GHz P4!, but runs blackdawn jdk 1.4). Just a wild guess, but it seemes to me that you have a 2-minute timeout on something, and than tomcat normally loads in 5-6s. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat taking 125 seconds to launch
how about running tcpdump on the box to see what it is doing when you start tomcat? Andrew On Apr 4, 2005, at 5:46 PM, Michael Mehrle wrote: You guys might be on to something - on my development machine it's taking only 25 seconds or so (identical code, tomcat version, and mysql installation). Question is: how do I fix a possible DNS lookup problem? - Original Message - From: Andrew Miehs [EMAIL PROTECTED] To: Tomcat Users List tomcat-user@jakarta.apache.org Sent: Monday, April 04, 2005 2:02 AM Subject: Re: Tomcat taking 125 seconds to launch hmm - sounds like a dns lookup causing a problem Andrew On Apr 4, 2005, at 11:03 AM, t.n.a. wrote: Michael Mehrle wrote: The configuration is a modified version of appfuse 1.5 (struts and hibernate) - so this should give you a good idea of how it is structured. FYI: on my development machine here at home Tomcat starts in 28 seconds - identical project and configuration. A fairly long time, any way you cut it. It takes about 6-9s on my Athlon 1900+ (using JDK 1.5), and a couple of seconds more on my laptop (even though the laptop has a 2.8GHz P4!, but runs blackdawn jdk 1.4). Just a wild guess, but it seemes to me that you have a 2-minute timeout on something, and than tomcat normally loads in 5-6s. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RH 7.3 to ES 3 migration Tomcat 5.0.28
I am about to update from Red Hat 7.3 to Red Hat Enterprise Server 3. This a move from Linux 2.4 kernel to a 2.4/2.6 hybrid. The Native Posix Threading Library (NPTL) is the biggest change there seems to be, does this cause any problems with the 1.5 JVM? Is anyone running Tomcat 5.0.28 with 1.5 JVM on Red Hat ES 3, are there any configuration issues that I should be aware of? Thanks in advance. Andy - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Altering default HTTP header fields for serving static content
If you really want the browser not to cache images, you are better off putting a timestamp on the end of the requests - as no-cache does not convince every browser all of the time... ie: http://localhost/image.gif?78927842303 On Mar 2, 2005, at 6:46 AM, [EMAIL PROTECTED] wrote: Is there a way to alter the default HTTP header fields when a request is made to Tomcat for static content? I would like to be able to add the Cache-Control general header field with value no-cache when serving images so they are not cached on the client side. Can anyone please help? I've tried looking everywhere but can't find a solution. Thanks in advance... David - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Load balancing SSL sessions
Hi Kelly, To do a software solution you could use the following method. www.mysite.com - Both servers can answer this request, (for example round robin dns) or some form of hsrp (im sure there is a patch for linux to do this)... and based upon load and a simple script (perl, java, etc) they then redirect the traffic server1.mysite.com, or server2.mysite.com This way the session then stays on server1 or server2. As I said though, you will need 2 certificates if you do not want the clients complaining about broken ssl certificates. Anderw Kelly Vista wrote: Thanks Andrew. In answer to your question, some of our app requires SSL -- exactly like an order-style app (but it's not a product ordering app). So, a person's session might involve the following path: 1. non SSL req 2. non SSL req 3. SSL req 4. non SSL req and we'd like that entire session to be persistent (i.e., sticky with one particular app server). BTW, it is not an issue for us if that server fails during the session. It will happen rarely and it's an acceptable failure for us (i.e., not mission critical data). I should have mentioned that we expect 1000 req/hour with this app. However, our app is not necessarily quick (dependent on external resources) and does keep a lot of state. I'm personally someone in favor of a H/W LB solution, but looking to be convinced that a valid S/W solution exists which is better (or just as good) as a H/W solution. I know the S/W solution will be less reliable (not solid state), but I'm looking to hear from folks who have done SSL session affinity with a S/W only approach. Andrew On Feb 22, 2005, at 10:24 PM, Kelly Vista wrote: Hi - We are looking to deploy our app, running on Tomcat 5, soon and are exploring load balancing options. We are looking at H/W and S/W solutions, and I was wondering if anyone had any past experience/advice they would like to share. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Load balancing SSL sessions
We use F5 BigIPs, but they are probably overkill for your application - The cisco probably will be as well. A 'Cheap' software solution might be to work with redirects, and 2 separate IP addresses. ie: ssl1.mysite.com and ssl2.mysite.com - You will need 2 ssl keys though for this to work. Does all of your app require ssl? or just a certain part, ie: payment. Do you need the stickiness for the whole app? or just for the ssl (seeing you are using tomcat, you will probably need it for the whole app)... Andrew On Feb 22, 2005, at 10:24 PM, Kelly Vista wrote: Hi - We are looking to deploy our app, running on Tomcat 5, soon and are exploring load balancing options. We are looking at H/W and S/W solutions, and I was wondering if anyone had any past experience/advice they would like to share. Our deployment is as pretty run-of-the-mill as it gets: 2 machines, each running Tomcat. We would like to avoid replicating state (since we have a lot of state in these apps, for reasons beyond our current control). Even in-memory session replication would not be option here, so we're punting on the Tomcat cluster solution. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Load balancing SSL sessions
Problem with round robin dns is that you can not guarantee that the web browser/ client will not make a second request to the dns server during the session - although very very unlikely. Andrew On Feb 22, 2005, at 11:01 PM, Filip Hanik - Dev Lists wrote: you can also use DNS round robin, www.mysite.com resolves to two or more IP addresses. Filip Andrew Miehs wrote: We use F5 BigIPs, but they are probably overkill for your application - The cisco probably will be as well. A 'Cheap' software solution might be to work with redirects, and 2 separate IP addresses. ie: ssl1.mysite.com and ssl2.mysite.com - You will need 2 ssl keys though for this to work. Does all of your app require ssl? or just a certain part, ie: payment. Do you need the stickiness for the whole app? or just for the ssl (seeing you are using tomcat, you will probably need it for the whole app)... Andrew On Feb 22, 2005, at 10:24 PM, Kelly Vista wrote: Hi - We are looking to deploy our app, running on Tomcat 5, soon and are exploring load balancing options. We are looking at H/W and S/W solutions, and I was wondering if anyone had any past experience/advice they would like to share. Our deployment is as pretty run-of-the-mill as it gets: 2 machines, each running Tomcat. We would like to avoid replicating state (since we have a lot of state in these apps, for reasons beyond our current control). Even in-memory session replication would not be option here, so we're punting on the Tomcat cluster solution. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Version control in WebDAV component of Tomcat
Return Receipt Your Version control in WebDAV component of Tomcat document: wasAndrew Paliga/Toronto/IBM received by: at:02/07/2005 09:29:52 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
HTTP Statur 500 -
Hi everyone, I have an issue that i can not resolve and i would be very greatful if anyone has and suggestions of how to even approach fixing this issue. I am running jdk 1.3.1_15 and jre 1.31_15 as well I am trying to run a web client application that some of my colleagues have made. It is linked with Corel Draw to create Corel Draw files. I am running the server off of Tomcat 4.1.24 When the program tries to invoke Corel I get the following error messages: HTTP Status 500 - --- - type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: com/ibm/bridge2java/Dispatch at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:254) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java: 256) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNe xt(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java: 191) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNe xt(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) ... ... .. i'm just wondering where should i start to try to fix the program?...Is it something to do with registering Corel Draw? the JRE/JDK? the server? or a problem with the program itself?? ANY suggestions would be GREATLY appreciated thanks, Andrew Paliga Andrew Paliga Junior Project Manager IBM Toronto Media Design Studio Phone: (905) 413-2024
Re: Meaning of threads
Using the worker-mpm or fork-mpm, apache does the same nasty thing with threads and keep-alive, although I believe that when its starts running out of threads it stops offering keep-alives - and to make matters worse - for each connection you now have 2 threads - one for apache and one for tomcat - Andrew On Jan 25, 2005, at 6:46 AM, Sean M. Duncan wrote: What is the impact of having apache httpd allow keep alive requests when using the AJP connector to tomcat? Does this have any impact on tomcat's thread usage? How well does httpd itself deal with keep alive pipelines under a heavy user load? -Sean - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Meaning of threads
I would also consider turning of keepalive. Unfortunately tomcat (and apache) both setup one thread per connection. You may be able to use squid as a reverse proxy if you are having load/ number of connection/ thread problems depending on your application Andrew On Jan 24, 2005, at 10:11 PM, Filip Hanik - Dev wrote: maxThreads=150 your server can handle a maximum of 150 concurrent clients minSpareThreads=25 if your server is idle, it will at least have 25 threads waiting to handle requests maxSpareThreads=75 if your server is idle, it will have no more than 75 threads waiting to handle requests you get the direction this is going in, right? Filip My server tends to lock out a user who bombards it with requests so I'm wondering whether those options have anything to do with it before I post the problem here. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: AW: Meaning of threads
On Jan 24, 2005, at 11:09 PM, Steffen Heil wrote: Hi the number of threads will depend on the size of your machine, but to support many concurrent users, you will want to turn off keep alive connections, as these will have the opposite effect. Wouldn't it make more sense to enable keep alive connections and increase the thread count - if memory suffices? Unfortunately not. IMHO threads are over used and over rated. Have a look at the reasons THTTPD and Zeus webserver were created. I was told that the 'Java Servlet Spec' (I think this was the one) requires one thread per connection. I can understand the reasoning behind this, as it makes the implementation much easier. In my experience however, this does NOT work well in a high traffic situation. It makes NO sense for a machine to need to deal with 1000+ threads. (Unless of course you have an E15000 in the basement with 1000 processors). I had major problems with Debian Woody as the supplied Glib C as I was unable to get java to start more than 250 threads. Sarge was better in that it supported the new linux threading library out of the box. I do not have any experience with Solaris or Windows when dealing with that many threads. You need to disable keep-alives, becuase if you don't you end up wasting a lot of threads that just sit waiting for the next request on that connection - meaning even more threads just hanging around. The scary thing is, imagine something hangs on the backend for 30 seconds, and then all your 1000 threads start trying to do something at once You will end up with a load of 1000 and ALL your requests will take a long time to return. It may be interesting to replace the http connector for tomcat with one that uses select and uses 'threads' as a type of worker pool. This way, you can deal with all the connections in the select loop (incl. keep-alive) and still have the advantage of not needing to remember state due to the worker threads to the back end... My 2c Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] HTTP Sniffers
Puzzle no longer... tcpdump -n -i eth0 -s0 -X Should you have a problem with s0 try changing it to something bigger than your MTU, ie: if you are using normal fast ethernet, 1600. Regards Andrew On the technical level, you have to puzzle out the command line arguments, which isn't that hard, and you also have to do some post-processing on the data to make it intelligible. Unfortunately, I no longer have my notes from whenI puzzled this out for myself. The man pages for tcpdump have a fair amount of example recipes for the arguments. Some googling should turn up examples and explanations of how to do this. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] HTTP Sniffers
Pardon my ignorance, but what about tcpdump or snoop??? And if you have problems with those, have a look at ethereel Andrew Didier McGillis wrote: Considering this is a pretty knowledgable group is there a good free HTTP Sniffer application I can use, I need to see what the HTTP headers are returning on my site. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
No Cookies
Hi, I require that an application never uses cookies, even if the user's browser accepts cookies. I have set cookies=false in the server.xml, however it is still attempting to send cookies to the client. If the browser accepts the cookie, then the session is maintained via cookies and if I do an encodeURL tomcat does not add the session information to the URL. Is it possible to do what I am describing or will tomcat always use cookies, regardless of the cookies=false entry if the browser accepts a cookie? Many thanks, Andy
Re: mod_jk config on mac os x (Modifié par Cyri l Godefroy)
On Thu, 2 Dec 2004 19:15:06 +0100, Cyril Godefroy [EMAIL PROTECTED] wrote: I have some trouble using mod_jk to connect my apache web server and my tomcat app server with mod_jk. I use mac Os X 10.3.6, Tomcat 4.1.31 Apache 2.0.57 mod_jk 1.2.5 This google search: http://www.google.com/search?q=osx+mod_jkie=UTF-8oe=UTF-8 Turned up this informative post: http://www.burnthacker.com/archives/000179.html The Horrors of mod_jk and Mac OSX I spent the day today trying to get mod_jk (and/or mod_jk2) working on my powerbook, so I could have a real webserver in front of my appserver. This turned out to be amazingly frustrating, largely due to the OSX dynlib shared libraries just being different (they're pretty much tied with the Win32 DLL format in that regard). The macosx binary directory for mod_jk2 on the apache mirrors is empty for a good reason: it doesn't even faintly build on OSX. It turns out the secret sauce is not to use the apache2 from fink (which ended up costing me several hours), but instead to use the mod_jk 1.2.5 for macosx with the 1.3 apache that comes with the system. If you then follow the normal mod_jk HOWTO, everything works fine out of the box. Posted by kris at November 10, 2004 05:34 AM | TrackBack -- Andrew Becherer Student, Computing and Software Systems University of Washington, Tacoma - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Lots of seemingly dead tomcat processes
Hi All. I've got a bit of an issue with a tomcat installation - I have an ever increasing number of processes, and the system users complain of intermittant slow performance. When a particular request is taking a long time (generally not responding at all - timing out after a couple of minutes) a page-refresh will generally generate a response in a normal time frame (on the order of 1-2 seconds). To me, this is symptomatic of a particular request hitting a dead tomcat process, while the refresh (being a different request) hits a different tomcat process, which responds in a more normal time. I'm a sys-admin type, not a developer, and my tomcat-foo is reasonably weak (but getting stronger, the more I do with it, of course). The system is running on a dual processor 2.8 GHz Xeon box, with 4 gig of ram. Base OS is Debian GNU/Linux I'm using the JRockit JVM, and Tomcat 5.0.27 The JVM and tomcat are in a chroot jail The tomcat server is making SOAP calls to another machine, and talking directly to an MS-SQL box - both the machine to which it makes the SOAP calls and the MS-SQL box show no indications of load. When tomcat is freshly restarted, I have 44 tomcat processes (ps ax | grep jrockit | wc -l). Over time (a number of days) this increases, until it hits around 245 processes, and it goes no higher than this. What I'm looking for is some sort of solution - either some tomcat setting I'm unfamiliar with that might be causing this, or some way outside of Tomcat I can put a band-aid style fix in place - restarting tomcat every X days, but that's uglier than I'd like - I'd far rather identify and fix the problem, than do scheduled restarts. Any assistance or suggestions that any kind soul can offer would be greatly appreciated. Thanks. Andrew -- They sicken of the calm; http://scroll.redemption.co.nz/ That know the storm. http://www.gadgets-weblog.com/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
HTTP Compression
Hi all, I am looking at enabling compression on Tomcat 5.0.25. Is everyone using compress=on or should I use an integer (?number of bytes?) Thanks Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: high traffic Tomcat sites out there?
I would be very careful using tomcat for 'High-Performance' internet applications. You will need to disable keepalives - or use some form of keep-alive proxy to stop tomcat creating too many connections. How many simultaneous users are you planning on having? What operating system are you planning on using - With linux, make sure you use the new threading library - (NPTL). Be careful with the ORB you choose, (should you be using an application server) as it to can create way tooo many threads. Thousands of request/ sec means that you will probably need to have your data in RAM - you may find it difficult to find a database/ filesystem that can deliver you the data quickly enough - would need to know more about the applications. Do not underestimate the problems with keepalives and number of connections/ threads. Regards Andrew Al Gidden wrote: We have three Tomcat systems in front of a large database. We use JMeter to test our site, and have pushed each system with 1000 requests per minute and not noticed any problems at all. Our servers only have one processor and 1GB of RAM. The only time we start to see any performance issues is due to the size of the database pool and the responsiveness of the DB connections under extreme load. Your code and the Tomcat config can all effect your performance. In our case, it took a year for us to get our code cleaned up and have enough benchmarks to know we made solid configuration changes for the sake of scalability. Best of luck to you, Al G - Original Message - From: LAM Kwun Wa Joseph [EMAIL PROTECTED] Date: Monday, November 22, 2004 4:55 am Subject: high traffic Tomcat sites out there? For my Tomcat cluster I'm looking for an upper limit on the estimation of how much traffic it may face. Say, would thousands of HTTP req/s be too 'astronomical' for a 4-node Dual P4 Xeon cluster to achieve? (I'm talkingabout dynamic pages such as stock quotes and news) Does anyone know of any high traffic JSP/servlet sites(running Tomcat or similar servlet container)? I'm mostly interested to know what's the typical magnitude of their HTTP throughput (e.g. hundreds or thousandsof HTTP/s) and what kinds of apps are they running. Joseph Lam --- -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Context element problems in conf/server.xml
Thanks again. That works great, I'm accessing my webapp fine as the default webapp with the following Engine name=Catalina defaultHost=localhost debug=9 Host name=localhost debug=9 appBase=webapps unpackWARs=true autoDeploy=true xmlValidation=false xmlNamespaceAware=false Context path= docBase=pets-proper debug=9 Environment name=servername type=java.lang.String value=dev.andrew override=false/ /Context /Host /Engine However, my application can't find the 'servername' environment property again! The combinations I've tried (each one three times to be sure) and their behaviour path=, docBase=xxx, WAR named xxx.war --- WAR is unpacked, webapp starts but property not found path=/, docBase=xxx, WAR named xxx.war --- WAR is unpacked, webapp starts but property not found path=, docBase=ROOT, WAR named ROOT.war --- WAR is not unpacked, webapp does not start path=/, docBase=ROOT, WAR named ROOT.war --- WAR is unpacked, webapp starts and property found! I'm now really confused. The last option was where I came in! This didn't work previously and now does. I really wish that I understood tomcats behaviour. The only other change is that I've cleaned up my server.xml file but only to remove comments and commented out sections. Andoni, thank you for your replies. Does this make any sense at all to you? If I have the time I'll take a look at the tomcat source but deadlines are looming at the moment... For the moment I have my fingers crossed (not my favourite policy) that all will keep working. Regards Andrew Andoni wrote: Yes, you can have any xxx.war that you access from http://localhost/login.jsp so long as it's path= and it is the only context in that Host which has path=. This is what makes it the default app. Andoni. - Original Message - From: Andrew Watters [EMAIL PROTECTED] Newsgroups: gmane.comp.jakarta.tomcat.user Sent: Friday, November 12, 2004 5:00 PM Subject: Re: Context element problems in conf/server.xml Hi Andoni Thanks again for your reply. I hope I'm understanding what you say correctly, apologies if not. If I rename my WAR to say, app.war, then to access a page the URL would become http://localhost/app/login.jsp. The reason why I changed the appBase to ROOT and renamed my WAR ROOT.war was so that the URL would be http://localhost/login.jsp. This is a customer directive. Is the problem that I'm going about this the wrong way in the first place? Can I have an app.war and access it like http://localhost/login.jsp? Best regards Andrew Andoni wrote: Ok, You can ignore the logger's and valve's when you are worrying about configuration. So what you are left with is: Engine name=Catalina defaultHost=localhost debug=9 Host name=localhost debug=9 appBase=webapps unpackWARs=true autoDeploy=true xmlValidation=false xmlNamespaceAware=false Context path=/ docBase=ROOT debug=9 /Context /Host /Engine What you have to be aware of is that ROOT is more than just another name for a webapp. ROOT is a special name for the default webapp in a host. Therefore what you should do is to remove all references to root. Comment out this line of the server.xml, call your .war file something else and set the path=. Regards, Andoni. - Original Message - From: Andrew Watters [EMAIL PROTECTED] Newsgroups: gmane.comp.jakarta.tomcat.user Sent: Friday, November 12, 2004 11:30 AM Subject: Re: Context element problems in conf/server.xml Thanks for your reply. Please find below the tags as requested. Thank you for taking the time. Engine name=Catalina defaultHost=localhost debug=9 Valve className=org.apache.catalina.valves.RequestDumperValve/ Logger className=org.apache.catalina.logger.FileLogger prefix=catalina_log. suffix=.txt timestamp=true/ Realm className=org.apache.catalina.realm.UserDatabaseRealm debug=9 resourceName=UserDatabase/ Host name=localhost debug=9 appBase=webapps unpackWARs=true autoDeploy=true xmlValidation=false xmlNamespaceAware=false Context path=/ docBase=ROOT debug=9 Environment name=servername type=java.lang.String value=dev.andrew override=false/ /Context Valve className=org.apache.catalina.valves.AccessLogValve directory=logs prefix=localhost_access_log. suffix=.txt pattern=common resolveHosts=false/ Logger className=org.apache.catalina.logger.FileLogger directory=logs prefix=localhost_log. suffix=.txt timestamp=true/ /Host /Engine Andoni wrote: Hello, You certainly don't need the / in the path attribute. This is not going to work as it cannot match just one slash. Would you please post the Engine Host and Context tags. They should all be seen as a group to know exactly what's being called. Andoni. - Original Message - From: Andrew Watters [EMAIL PROTECTED] Newsgroups: gmane.comp.jakarta.tomcat.user Sent: Thursday, November 11, 2004 4:19 PM Subject: Context element problems in conf/server.xml Hi I posted
Re: Analysing dead threads
Hi Stefan, You might want to try kill -3 processid Depending on your JVM you may find a stacktrace in STDERR (STDIO?) or in a seperate file in the directory where you started the JVM Depending on the version of Tomcat you are running, you may also want to have a look at the manager application: http://www.myhost.com/manager/status Regards Andrew Steffen Heil wrote: Hi I have a situation, where a lot of threads seem to stop working right in my servlet. From debug output, I know they entered the servlet but never leave it. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Analysing dead threads
Hi Peter, A profiler may cause more trouble than help if you try this on a heavily loaded production box. It might be easiest if he first looks at the 'manager' application that comes with tomcat 5. Regards Andrew Peter Lin wrote: just for clarification. Do you mean zombie threads? Threads that are not reachable, but still running. My advice would be to download a profiler and figure out the cause. peter - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Context element problems in conf/server.xml
Thanks for your reply. Please find below the tags as requested. Thank you for taking the time. Engine name=Catalina defaultHost=localhost debug=9 Valve className=org.apache.catalina.valves.RequestDumperValve/ Logger className=org.apache.catalina.logger.FileLogger prefix=catalina_log. suffix=.txt timestamp=true/ Realm className=org.apache.catalina.realm.UserDatabaseRealm debug=9 resourceName=UserDatabase/ Host name=localhost debug=9 appBase=webapps unpackWARs=true autoDeploy=true xmlValidation=false xmlNamespaceAware=false Context path=/ docBase=ROOT debug=9 Environment name=servername type=java.lang.String value=dev.andrew override=false/ /Context Valve className=org.apache.catalina.valves.AccessLogValve directory=logs prefix=localhost_access_log. suffix=.txt pattern=common resolveHosts=false/ Logger className=org.apache.catalina.logger.FileLogger directory=logs prefix=localhost_log. suffix=.txt timestamp=true/ /Host /Engine Andoni wrote: Hello, You certainly don't need the / in the path attribute. This is not going to work as it cannot match just one slash. Would you please post the Engine Host and Context tags. They should all be seen as a group to know exactly what's being called. Andoni. - Original Message - From: Andrew Watters [EMAIL PROTECTED] Newsgroups: gmane.comp.jakarta.tomcat.user Sent: Thursday, November 11, 2004 4:19 PM Subject: Context element problems in conf/server.xml Hi I posted a problem a couple of days ago which I've made some progress with. Originally my webapp ROOT.war would not unpack. I've figured out the problem was with the Context element as shown below Context path= docBase=ROOT debug=9 Environment name=servername type=java.lang.String value=dev.andrew/ /Context If I unpacked ROOT.war manually then my application worked fine. By adding a forward slash to the path attribute as shown below Context path=/ docBase=ROOT debug=9 Environment name=servername type=java.lang.String value=dev.andrew/ /Context tomcat now unpacks the WAR fine. However, my application no longer starts because it cannot find the 'servername'! Yikes! Does anybody have any suggestions please? Thanks again Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Context element problems in conf/server.xml
Hi Andoni Thanks again for your reply. I hope I'm understanding what you say correctly, apologies if not. If I rename my WAR to say, app.war, then to access a page the URL would become http://localhost/app/login.jsp. The reason why I changed the appBase to ROOT and renamed my WAR ROOT.war was so that the URL would be http://localhost/login.jsp. This is a customer directive. Is the problem that I'm going about this the wrong way in the first place? Can I have an app.war and access it like http://localhost/login.jsp? Best regards Andrew Andoni wrote: Ok, You can ignore the logger's and valve's when you are worrying about configuration. So what you are left with is: Engine name=Catalina defaultHost=localhost debug=9 Host name=localhost debug=9 appBase=webapps unpackWARs=true autoDeploy=true xmlValidation=false xmlNamespaceAware=false Context path=/ docBase=ROOT debug=9 /Context /Host /Engine What you have to be aware of is that ROOT is more than just another name for a webapp. ROOT is a special name for the default webapp in a host. Therefore what you should do is to remove all references to root. Comment out this line of the server.xml, call your .war file something else and set the path=. Regards, Andoni. - Original Message - From: Andrew Watters [EMAIL PROTECTED] Newsgroups: gmane.comp.jakarta.tomcat.user Sent: Friday, November 12, 2004 11:30 AM Subject: Re: Context element problems in conf/server.xml Thanks for your reply. Please find below the tags as requested. Thank you for taking the time. Engine name=Catalina defaultHost=localhost debug=9 Valve className=org.apache.catalina.valves.RequestDumperValve/ Logger className=org.apache.catalina.logger.FileLogger prefix=catalina_log. suffix=.txt timestamp=true/ Realm className=org.apache.catalina.realm.UserDatabaseRealm debug=9 resourceName=UserDatabase/ Host name=localhost debug=9 appBase=webapps unpackWARs=true autoDeploy=true xmlValidation=false xmlNamespaceAware=false Context path=/ docBase=ROOT debug=9 Environment name=servername type=java.lang.String value=dev.andrew override=false/ /Context Valve className=org.apache.catalina.valves.AccessLogValve directory=logs prefix=localhost_access_log. suffix=.txt pattern=common resolveHosts=false/ Logger className=org.apache.catalina.logger.FileLogger directory=logs prefix=localhost_log. suffix=.txt timestamp=true/ /Host /Engine Andoni wrote: Hello, You certainly don't need the / in the path attribute. This is not going to work as it cannot match just one slash. Would you please post the Engine Host and Context tags. They should all be seen as a group to know exactly what's being called. Andoni. - Original Message - From: Andrew Watters [EMAIL PROTECTED] Newsgroups: gmane.comp.jakarta.tomcat.user Sent: Thursday, November 11, 2004 4:19 PM Subject: Context element problems in conf/server.xml Hi I posted a problem a couple of days ago which I've made some progress with. Originally my webapp ROOT.war would not unpack. I've figured out the problem was with the Context element as shown below Context path= docBase=ROOT debug=9 Environment name=servername type=java.lang.String value=dev.andrew/ /Context If I unpacked ROOT.war manually then my application worked fine. By adding a forward slash to the path attribute as shown below Context path=/ docBase=ROOT debug=9 Environment name=servername type=java.lang.String value=dev.andrew/ /Context tomcat now unpacks the WAR fine. However, my application no longer starts because it cannot find the 'servername'! Yikes! Does anybody have any suggestions please? Thanks again Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Context element problems in conf/server.xml
Hi I posted a problem a couple of days ago which I've made some progress with. Originally my webapp ROOT.war would not unpack. I've figured out the problem was with the Context element as shown below Context path= docBase=ROOT debug=9 Environment name=servername type=java.lang.String value=dev.andrew/ /Context If I unpacked ROOT.war manually then my application worked fine. By adding a forward slash to the path attribute as shown below Context path=/ docBase=ROOT debug=9 Environment name=servername type=java.lang.String value=dev.andrew/ /Context tomcat now unpacks the WAR fine. However, my application no longer starts because it cannot find the 'servername'! Yikes! Does anybody have any suggestions please? Thanks again Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Renaming WAR problem
Thanks for your reply Tim. Tim Penhey wrote: Andrew Watters wrote: In this case the webapps directory is entirely empty, I delete the ROOT folder as part of the publish procedure and there are no other apps configured except for the manager and admin ones. What about the XML configuration file in $TOMCAT_HOME/conf/Catalina/localhost Does it specify the name of the correct war file? The only files in here are admin.xml and manager.xml. Should I have something for ROOT? As Yoav mentioned, look at the Host element in the /conf/server.xml file. Specifically the values for unpackWARs and autoDeploy. I think this is configured correctly. I have Host name=localhost debug=9 appBase=webapps unpackWARs=true autoDeploy=true xmlValidation=false xmlNamespaceAware=false I have also set all debug leverls in /conf/server.xml and /conf/web.xml to 9. I don't see any indication of errors in any of the generated logs or in the command window. Tim - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Doubts with tomcat
Tomcat starts 5 connector threads, plus the other internal threads that it uses for its own house keeping. Andrew On 08.11.2004, at 08:29, Michael Echerer wrote: 1) When I start tomcat with above server.xml , it creates 9 process with same output on shell. it is I configured tomcat to run with minSpareThreads=5 then why it start with 9 threads? You configured 5 connector threads that not necessarily match OS threads (or whatever you saw). Check with Tomcat's manager application how many connector threads you really have. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Connection Timeout
Does anyone know any way that I can tell tomcat to kill the 'thread' if it isn't back in a ready state within 30 seconds? (waiting for new requests) Thanks Andrew On 05.11.2004, at 16:20, Phillip Qin wrote: Byte recv and byte sent? -Original Message- From: Andrew Miehs [mailto:[EMAIL PROTECTED] Sent: November 5, 2004 10:18 AM To: Tomcat Users List Subject: Re: Connection Timeout Hi Phillip, The request is for example a 10K image. Regards Andrew On 05.11.2004, at 16:11, Phillip Qin wrote: My guess is the request was serviced by Tomcat, and took that much time. What did your request column tell? A huge request, file upload? -Original Message- From: Andrew Miehs [mailto:[EMAIL PROTECTED] Sent: November 5, 2004 4:24 AM To: Tomcat Users List Subject: Connection Timeout Dear List, In /manager/status, I occasionally see connections where the status is 'S' and the time column is huge! 1 ms. Does this mean that the request is still being processed by tomcat? or is this a request waiting to be picked up - ie: chunked? If so, is there any way I can set a timeout for this, as a time 10 seconds makes very little sense with our application? Thanks in advance, Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Renaming WAR problem
I have a WAR which tomcat recognises and unpacks correctly. When I rename the WAR tomcat no longer unpacks it. Is this expected behaviour? I've had a look in the 2.4 servlet spec and haven't been able to find anything on this topic. Is there a work around that will allow me to do this? Thank you Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Renaming WAR problem
Well, that explains something :) So what is tomcat seeing in the WAR that it refuses to unpack it after renaming? Shapira, Yoav wrote: Hi, I have a WAR which tomcat recognises and unpacks correctly. When I rename the WAR tomcat no longer unpacks it. Is this expected behaviour? I've had a look in the 2.4 servlet spec and haven't been able to find anything on this topic. Is there a work around that will allow me to do this? Considering that unpacking of WARs and renaming of web application are not areas covered by the Servlet Spec, I'm not surprised you didn't find anything there ;) It's a container-specific implementation issue. Yoav This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Renaming WAR problem
In this case the webapps directory is entirely empty, I delete the ROOT folder as part of the publish procedure and there are no other apps configured except for the manager and admin ones. Shapira, Yoav wrote: Hi, Well, that explains something :) So what is tomcat seeing in the WAR that it refuses to unpack it after renaming? A directory with that name already existing. Tomcat won't overwrite such a directory if it exists. If your app is Spec-compliant, considering setting unpackWARs=false for your Host. Yoav This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Renaming WAR problem
Apologies, I replied before but it never appeared, trying again... I renamed it to ROOT.WAR. The webapp used to be named like this and previously worked fine. It's now called ROOT-1.0.WAR. The new name is a result of moving to maven and it appending the version number. Ben Souther wrote: What did you rename it to? On Mon, 2004-11-08 at 09:46, Andrew Watters wrote: I have a WAR which tomcat recognises and unpacks correctly. When I rename the WAR tomcat no longer unpacks it. Is this expected behaviour? I've had a look in the 2.4 servlet spec and haven't been able to find anything on this topic. Is there a work around that will allow me to do this? Thank you Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Renaming WAR problem
I renamed it to ROOT.WAR. The webapp used to be named like this and previously worked fine. It's now called ROOT-1.0.WAR. The new name is a result of moving to maven and it appending the version number. Ben Souther wrote: What did you rename it to? On Mon, 2004-11-08 at 09:46, Andrew Watters wrote: I have a WAR which tomcat recognises and unpacks correctly. When I rename the WAR tomcat no longer unpacks it. Is this expected behaviour? I've had a look in the 2.4 servlet spec and haven't been able to find anything on this topic. Is there a work around that will allow me to do this? Thank you Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Renaming WAR problem
Thanks. Sorry that's just my poor typing. It actually is ROOT.war. If I name it back again it unpacks fine! Aaagh, my head hurts now. Ben Souther wrote: try ROOT.war On Mon, 2004-11-08 at 10:27, Andrew Watters wrote: Apologies, I replied before but it never appeared, trying again... I renamed it to ROOT.WAR. The webapp used to be named like this and previously worked fine. It's now called ROOT-1.0.WAR. The new name is a result of moving to maven and it appending the version number. Ben Souther wrote: What did you rename it to? On Mon, 2004-11-08 at 09:46, Andrew Watters wrote: I have a WAR which tomcat recognises and unpacks correctly. When I rename the WAR tomcat no longer unpacks it. Is this expected behaviour? I've had a look in the 2.4 servlet spec and haven't been able to find anything on this topic. Is there a work around that will allow me to do this? Thank you Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Connection Timeout
Dear List, In /manager/status, I occasionally see connections where the status is 'S' and the time column is huge! 1 ms. Does this mean that the request is still being processed by tomcat? or is this a request waiting to be picked up - ie: chunked? If so, is there any way I can set a timeout for this, as a time 10 seconds makes very little sense with our application? Thanks in advance, Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Connection Timeout
Hi Phillip, The request is for example a 10K image. Regards Andrew On 05.11.2004, at 16:11, Phillip Qin wrote: My guess is the request was serviced by Tomcat, and took that much time. What did your request column tell? A huge request, file upload? -Original Message- From: Andrew Miehs [mailto:[EMAIL PROTECTED] Sent: November 5, 2004 4:24 AM To: Tomcat Users List Subject: Connection Timeout Dear List, In /manager/status, I occasionally see connections where the status is 'S' and the time column is huge! 1 ms. Does this mean that the request is still being processed by tomcat? or is this a request waiting to be picked up - ie: chunked? If so, is there any way I can set a timeout for this, as a time 10 seconds makes very little sense with our application? Thanks in advance, Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] !DSPAM:418b46a1164289526310470! - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Connection Timeout
Hi Phillip, S506331 ms17 KB0 KBx.x.2.24www.x.comGET /x//img/x/Image.gif HTTP/1.1 Regards Andrew On 05.11.2004, at 16:20, Phillip Qin wrote: Byte recv and byte sent? -Original Message- From: Andrew Miehs [mailto:[EMAIL PROTECTED] Sent: November 5, 2004 10:18 AM To: Tomcat Users List Subject: Re: Connection Timeout Hi Phillip, The request is for example a 10K image. Regards Andrew On 05.11.2004, at 16:11, Phillip Qin wrote: My guess is the request was serviced by Tomcat, and took that much time. What did your request column tell? A huge request, file upload? -Original Message- From: Andrew Miehs [mailto:[EMAIL PROTECTED] Sent: November 5, 2004 4:24 AM To: Tomcat Users List Subject: Connection Timeout Dear List, In /manager/status, I occasionally see connections where the status is 'S' and the time column is huge! 1 ms. Does this mean that the request is still being processed by tomcat? or is this a request waiting to be picked up - ie: chunked? If so, is there any way I can set a timeout for this, as a time 10 seconds makes very little sense with our application? Thanks in advance, Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] !DSPAM:418b99c3205412059510077!
Re: Huge tomcat memory footprint
Hi Anand, We currently have a similar problem. Under load the JVM consumes more and more memory. (We are using tomcat 5.0 and Sun JVM 1.4.2 and linux (debian sarge)) In our case it looks as if the Garbage Collector is not getting enough time to free memory - but this is still very much a guess. You may want to have a look in this direction however. We are currently looking at see what setting we can tune for the GC or maybe using a different JVM. Good luck, Andrew -Original Message- From: Anand Narasimhan [mailto:[EMAIL PROTECTED] Sent: Monday, November 01, 2004 5:26 PM To: [EMAIL PROTECTED] Subject: Huge tomcat memory footprint Hi, I am not able to determine if the problem is related to tomcat, solaris or the application itself. Any help/pointers to debug the problem will be greatly appreciated. The application runs on Solaris 2.8 using Sun's Java version 1.4.1_02. The tomcat version is 4.1.27. The GUI is written using HTML/JSP/Struts 1.0.2. The database is Oracle version 8.x (I think). The application also has API interface written using Java/XML/Soap etc. The application is memory/CPU intensive. The problem I am having is, after running under a large load, tomcat process's memory footprint (reported by top command) increases rapidly to more that 2G. The heap size (max configured to 1G), increases to about 500 - 600M. I have tried running tomcat with optimizeit to see if there are any memory leaks. optimizeit as wells as the output from GC (running with -verbose:gc, -XX+PrintGCDetails) shows frequent garbage collection activity and the heap size does not grow too much. I am not able to figure out why the process memory grows. If the heap is not growing too much, what is consuming the memory? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Tomcat in a High Traffic Environment
Dear List, I am new to the list and have a few questions about Tomcat 5.0. We are attempting to use tomcat in a High Traffic, many simultaneous Internet user environment. I have about 8000 simultaneous users, and plan on using 14 web servers. These servers connect via CORBA to a group of backend servers. The 14 web severs are load balanced with a hardware load balancer. How does Tomcat deal with connections? When a request from a user arrives, is it assigned a thread? and is this thread ONLY used for this connection, (including obtaining information from the backend) until the request is finished? How are keep-alives dealt with? When a user requests a keep-alive, is a thread held permanently for this user, until the connection is dropped? If this is the case, how is this ment to scale? A connection pool of 750 threads seems unusable... How can 1 thread per connection scale? or have I misunderstood how tomcat uses its connection pool? And should all of these threads ever have something to do at the same time, the box would just fall over with a load of 750 Would it not make more sense to use a smaller connection pool, and set up queues? Would it not then be better when the request has been processed, to put this into a second queue for requests which then go to the backend, etc, etc? So many threads can't help performance. Wouldn't the kernel be busy the whole time with context switching? and no user would ever get any data back Thanks in advance for any comments, Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat in a High Traffic Environment
Hi Peter, The load balancer is an F5 and we are doing can do the balancing based on JSESSIONID. At the moment we are doing persistence based on our own cookie (Long story). How did you disable keep-alives? maxKeepAliveRequests=1 ? Doesn't it make more sense to use keep-alives? And what does tomcat really do with these keep-alive connections? Does it really keep 1 thread open for each keep-alive? this seems VERY unnecessary Regards Andrew On 29.10.2004, at 17:02, Peter Lin wrote: if you're using hardware load balancer like cisco localdirector, I would setup the load balancer to direct the traffic based on sessionid. this way, you don't need to use keep alive. when you say 8K simultaneous users, what does that translate to in terms of concurrent requests per second? An easy way to figure that out is to use a Http analysis tool like webtrends, or HttpAnalyze to generate statistics. I would look at the peak and average concurent requests. once you know that, it will be easier to determine if 14 servers are sufficient. peter On Fri, 29 Oct 2004 16:53:26 +0200, Andrew Miehs [EMAIL PROTECTED] wrote: Dear List, I am new to the list and have a few questions about Tomcat 5.0. We are attempting to use tomcat in a High Traffic, many simultaneous Internet user environment. I have about 8000 simultaneous users, and plan on using 14 web servers. These servers connect via CORBA to a group of backend servers. The 14 web severs are load balanced with a hardware load balancer. How does Tomcat deal with connections? When a request from a user arrives, is it assigned a thread? and is this thread ONLY used for this connection, (including obtaining information from the backend) until the request is finished? How are keep-alives dealt with? When a user requests a keep-alive, is a thread held permanently for this user, until the connection is dropped? If this is the case, how is this ment to scale? A connection pool of 750 threads seems unusable... How can 1 thread per connection scale? or have I misunderstood how tomcat uses its connection pool? And should all of these threads ever have something to do at the same time, the box would just fall over with a load of 750 Would it not make more sense to use a smaller connection pool, and set up queues? Would it not then be better when the request has been processed, to put this into a second queue for requests which then go to the backend, etc, etc? So many threads can't help performance. Wouldn't the kernel be busy the whole time with context switching? and no user would ever get any data back Thanks in advance for any comments, Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat in a High Traffic Environment
Hi Yoav, I have not read the Servlet Spec, so please pardon my ignorance. (Definitely do not mean to offend). What I still haven't had clearly answered is: User A sends request (with keepalive) to tomcat. Tomcat assigns request to thread (T1). Tomcat sends result back. Is thread T1 now kept reserved for user A until he/ or tomcat closes the keep-alive connection? If this is the case, and I now have 1000 users, each with 2 connections per user (ie: 2000 connections) do I need 2000 threads? What if the requests each only take a very short amount of time? The server is capable of answering a lot more requests than those from the 1000 users, but due to the number of connections and threads, I am limited to the 1000 users per machine... Or am I just missing something here... I can understand the issue with the one thread one request in the Spec - am just wondering if there isn't a better way, as I can not see how this can possible scale in a high traffic environment - or maybe I just don't understand... :-( Thanks Andrew On 29.10.2004, at 17:28, Shapira, Yoav wrote: Hi, these keep-alive connections? Does it really keep 1 thread open for each keep-alive? this seems VERY unnecessary Remember that the Servlet Spec mandates the Servlet Container service a request with one thread, independent of the HTTP details. So before you think we're clueless when it comes to performant connection handling design, please keep that in mind ;) Yoav This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat in a High Traffic Environment
The loadbalancer forwards the packet to tomcat, and as such, tomcat sees the keep-alive request. If tomcat has keep-alive enabled, it will set up keep alive on its end. Andrew On 29.10.2004, at 17:31, Peter Lin wrote: you don't need to use keepalive. generally, in a load balanced setup, keepalive is disabled because the load balancer is already making sure the user goes to the same webserver for the life time of the session. keepalive is usually set in the HTTP header by the client, so I don't think you need to do anything to tomcat's config. someone correct me if I'm wrong. remy can provide a better description of what happens in the case a browser wants to use keep alive. peter On Fri, 29 Oct 2004 17:20:18 +0200, Andrew Miehs [EMAIL PROTECTED] wrote: Hi Peter, The load balancer is an F5 and we are doing can do the balancing based on JSESSIONID. At the moment we are doing persistence based on our own cookie (Long story). How did you disable keep-alives? maxKeepAliveRequests=1 ? Doesn't it make more sense to use keep-alives? And what does tomcat really do with these keep-alive connections? Does it really keep 1 thread open for each keep-alive? this seems VERY unnecessary Regards Andrew On 29.10.2004, at 17:02, Peter Lin wrote: if you're using hardware load balancer like cisco localdirector, I would setup the load balancer to direct the traffic based on sessionid. this way, you don't need to use keep alive. when you say 8K simultaneous users, what does that translate to in terms of concurrent requests per second? An easy way to figure that out is to use a Http analysis tool like webtrends, or HttpAnalyze to generate statistics. I would look at the peak and average concurent requests. once you know that, it will be easier to determine if 14 servers are sufficient. peter On Fri, 29 Oct 2004 16:53:26 +0200, Andrew Miehs [EMAIL PROTECTED] wrote: Dear List, I am new to the list and have a few questions about Tomcat 5.0. We are attempting to use tomcat in a High Traffic, many simultaneous Internet user environment. I have about 8000 simultaneous users, and plan on using 14 web servers. These servers connect via CORBA to a group of backend servers. The 14 web severs are load balanced with a hardware load balancer. How does Tomcat deal with connections? When a request from a user arrives, is it assigned a thread? and is this thread ONLY used for this connection, (including obtaining information from the backend) until the request is finished? How are keep-alives dealt with? When a user requests a keep-alive, is a thread held permanently for this user, until the connection is dropped? If this is the case, how is this ment to scale? A connection pool of 750 threads seems unusable... How can 1 thread per connection scale? or have I misunderstood how tomcat uses its connection pool? And should all of these threads ever have something to do at the same time, the box would just fall over with a load of 750 Would it not make more sense to use a smaller connection pool, and set up queues? Would it not then be better when the request has been processed, to put this into a second queue for requests which then go to the backend, etc, etc? So many threads can't help performance. Wouldn't the kernel be busy the whole time with context switching? and no user would ever get any data back Thanks in advance for any comments, Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: extraordinarily stupid question
mv $TOMCAT_HOME/server/webapps/manager $TOMCAT_HOME/server/webapps/newmanager On 29.10.2004, at 17:45, joon yoo wrote: After I install tomcat 5.0, the tomcat management page is on http://tomcat:8080 How can this management page be obscured/moved to a different url and then, how can a redirector to http://tomcat:8080/application be put in for that root address? Thanks for any help, joon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat in a High Traffic Environment
Hi Filip, Is this how you disable keep-alive on tomcat? maxKeepAliveRequests=1 or is there another switch that I am missing.. On 29.10.2004, at 17:49, Filip Hanik - Dev wrote: turn off keep alive - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat in a High Traffic Environment
Hi Peter, I am not using keep-alives to keep session persistence, but was rather hoping for better client performance. Using keep-alives saves creating a tcp connection for each request - and thereby saving 3 tcp packets (and roundtrip times) per request. Andrew On 29.10.2004, at 17:53, Peter Lin wrote: mladen makes a good point. the sites I've worked on, we left the keepalive up to the browser and didn't explicitly disable keepalive. the sites I've worked on we simply used hardware load balancer to make sure the session goes to the right server. that is usually enough from my experience. my bias perspective is, unless the users are sending requests very rapidly, I don't see much benefit to using keepalive. If the interval between requests is rather long, like minutes, I doubt keepalive would provide any measurable benefit. I would look at the statistics from the http logs to determine whether keepalive should be disabled or not. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat in a High Traffic Environment
On 29.10.2004, at 19:08, Peter Lin wrote: if you're looking for better client performance I would explore other areas first. 1. use gzip compression - this can reduce the html to 1/10th the size. your mileage will vary. This is being looked at - loadbalancer vrs tomcat 2. caching results on the web-tier Very dynamic content 3. putting the images on a dedicated image server Already being done. 2x Servers running apache - which also have this keep-alive problem. Running 1000 threads per server is NOT my idea of a good time. I will be having a look at a couple of other alternatives to apache over the next couple of weeks. Due to operating system/ kenerl overheads time for one request (time for 10 parallel requests)/10 (time for 1000 parallel requests)/1000 Squid is a good example of how you can server MANY connections without starting thousands of threads. 4. distributing your servers across multiple ISP. many service providers don't tell you this, but often their pipe is saturated and can't really handle a large number of concurrent requests. if you host your own servers i would recommend getting more than 1 connection and use different providers This is NOT a pipe saturation issue. The issue is definitely a tomcat/ number of connections issue. I already have this problem in my local network with load tests. Most browsers today are Http1.1 compliant, which means they are limited to 2 connections to the same server. Normally the browser will use the same connection to get the html and the other resources like images and javascript. This will only happen if keep-alives are enabled. If keep-alives are disabled each GET will be a new connection. The F5 load balancers (4.5) have a 'cool-feature?!' that 'forwards' the keep-alive connection through to the backend server - With the 4.5 version of the software they are doing packet mangling. This means that even though the cllient only has 2 connections, the load balancer multiplies this connection to EACH of the backend servers with which the client is communicating, ie: static servers get 2 connections per client, statistic servers get 2 connections per client, tomcats get 2 connections per client.. Version 9 of the software has just come out, and it does proxying this should hopefully help solve this problem - I am still in the process of testing the new version. Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: can't send request over my network ip
You are using the port when trying from the pricate network also, right? Andrew -Original Message- From: Sebastian Kerekes [mailto:[EMAIL PROTECTED] Sent: Tuesday, September 21, 2004 9:17 AM To: Tomcat Users List Subject: can't send request over my network ip I can access Tomcat through 127.0.0.1:8080 but not via 192.168.1.172 (private network). I'm using Tomcat 5.0.27. I haven't changed any of Tomcat's settings. Do I have to change some settings or is this problem not related to Tomcat? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Connection class unknown...
You could try importing java.sql.Connection (not javax.sql.Connection). Maybe this would help. Regards, Andy -Original Message- From: Sexy Prague To: [EMAIL PROTECTED] Sent: 05/09/2004 18:12 Subject: Connection class unknown... Hello everybody, I've got a problem with creating Connection object in my jsp where I'd like to use DB. I use JNDI and this is the code of my jsp's scriptlet: Context initContext = new InitialContext(); Context envContext = (Context)initContext.lookup(java:/comp/env); DataSource ds = (DataSource)envContext.lookup(jdbc/TestDB); //until this part it works perfectly, but when I add the next line, tomcat screams, that //can not resolve symbol Connection... so classic error with unknown class Connection conn; //after previous line it doesn't work It is strange, because I have imported the whole javax.sql.* package Have somebody already met this problem? Thanks in advance, Peter _ Emotikony a pozadi programu MSN Messenger ozivi vasi konverzaci. http://messenger.msn.cz/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Rotation of Catalina.out
Here is a couple links that should explain the lack of rotation of catalina.out: 1) http://jakarta.apache.org/tomcat/faq/misc.html#catalina.out This one is from the tomcat website and is just the question you are asking. It says that you should not be using stdout (System.out.println) because you should be using a logging package like log4j (good recommendation). 2) http://marc.theaimsgroup.com/?t=10554447261r=1w=2 As reference by the above link, this one is a thread about rotating catalina.out. Hope this helps, Andrew Janian -Original Message- From: David Goodenough [mailto:[EMAIL PROTECTED] Sent: Friday, September 03, 2004 7:49 AM To: [EMAIL PROTECTED] Subject: Rotation of Catalina.out I am running Tomcat 5.0.27 on a Debian Unstable system in /usr/local/share/tomcat5. Under this directory is the logs directory and that contains lots of localhost_log.-mm-dd.txt files (one for each day) but only one catalina.out file. In server.xml there are two Logger tags:- !-- Global logger unless overridden at lower levels -- Logger className=org.apache.catalina.logger.FileLogger prefix=catalina_log. suffix=.txt timestamp=true/ Logger className=org.apache.catalina.logger.FileLogger directory=logs prefix=localhost_log. suffix=.txt timestamp=true/ and I guess that the latter is responsible for all the daily logs. The former however is obviously not responsible for the catalina.out as the file name is wrong. So I assume that Catalina.out is coming from StandardErrLogger and/or StandardOutLogger. My question is how to get daily files for Catalina.out? David - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Rotation of Catalina.out
If you remove the stdout references then the output will only go to your file. See below: # Sample properties to initialise log4j #log4j.rootCategory=debug, R log4j.appender.R=org.apache.log4j.RollingFileAppender log4j.appender.R.File=logtags.log log4j.appender.R.MaxFileSize=100KB # Keep one backup file -- really keeping 2, you know that right? log4j.appender.R.MaxBackupIndex=2 log4j.appender.R.layout=org.apache.log4j.PatternLayout log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n Hope that helps, Andrew -Original Message- From: David Goodenough [mailto:[EMAIL PROTECTED] Sent: Friday, September 03, 2004 8:47 AM To: Tomcat Users List Subject: Re: Rotation of Catalina.out Well actually I am using Log4j (under the covers) I think. I am using the log JSP tags, and they have log4j as a pre-req. But obviously somehow the default config for log4j is writing to stdout rather than a log file. The default log4j.properties file that ships with the log tags is:- # Sample properties to initialise log4j #log4j.rootCategory=debug, stdout, R log4j.rootCategory=debug, stdout log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout # Pattern to output the caller's file name and line number. log4j.appender.stdout.layout.ConversionPattern=%5p - %m%n log4j.appender.R=org.apache.log4j.RollingFileAppender log4j.appender.R.File=logtags.log log4j.appender.R.MaxFileSize=100KB # Keep one backup file log4j.appender.R.MaxBackupIndex=2 log4j.appender.R.layout=org.apache.log4j.PatternLayout log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n Obviously I need to modify this to get it to put the output somewhere else and to rotate it. But reading the log4j manual on the apache site I am not sure I know what I need to modify. TIA David On Friday 03 September 2004 13:55, Andrew Janian wrote: Here is a couple links that should explain the lack of rotation of catalina.out: 1) http://jakarta.apache.org/tomcat/faq/misc.html#catalina.out This one is from the tomcat website and is just the question you are asking. It says that you should not be using stdout (System.out.println) because you should be using a logging package like log4j (good recommendation). 2) http://marc.theaimsgroup.com/?t=10554447261r=1w=2 As reference by the above link, this one is a thread about rotating catalina.out. Hope this helps, Andrew Janian -Original Message- From: David Goodenough [mailto:[EMAIL PROTECTED] Sent: Friday, September 03, 2004 7:49 AM To: [EMAIL PROTECTED] Subject: Rotation of Catalina.out I am running Tomcat 5.0.27 on a Debian Unstable system in /usr/local/share/tomcat5. Under this directory is the logs directory and that contains lots of localhost_log.-mm-dd.txt files (one for each day) but only one catalina.out file. In server.xml there are two Logger tags:- !-- Global logger unless overridden at lower levels -- Logger className=org.apache.catalina.logger.FileLogger prefix=catalina_log. suffix=.txt timestamp=true/ Logger className=org.apache.catalina.logger.FileLogger directory=logs prefix=localhost_log. suffix=.txt timestamp=true/ and I guess that the latter is responsible for all the daily logs. The former however is obviously not responsible for the catalina.out as the file name is wrong. So I assume that Catalina.out is coming from StandardErrLogger and/or StandardOutLogger. My question is how to get daily files for Catalina.out? David - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Accessing files within the WEB-INF folder
Hello All, I am wondering what the best method for accessing files that are located within the WEB-INF folder? I tried using the ClassLoader.getResource(), but then I realized that won't work. Thanks in advance, Andrew. -- Name: Andrew Steiger Phone: 267.305.1515 Cubicle: UG2A208T Mailstop: UG2A-50 Email: [EMAIL PROTECTED] - -- Notice: This e-mail message, together with any attachments, contains information of Merck Co., Inc. (One Merck Drive, Whitehouse Station, New Jersey, USA 08889), and/or its affiliates (which may be known outside the United States as Merck Frosst, Merck Sharp Dohme or MSD and in Japan, as Banyu) that may be confidential, proprietary copyrighted and/or legally privileged. It is intended solely for the use of the individual or entity named on this message. If you are not the intended recipient, and have received this message in error, please notify us immediately by reply e-mail and then delete it from your system. -- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Access Log Valve
Hi, I have enabled access logging by uncomment the Access Log Valve in the server.xml file. I have added the resolveHosts attribute and set it to true. I have also changed the pattern attribute to %h so that I can just get the Remote host name in the log file. In the access log file I only get an ip address per request. Any ideas on why I am not able to resolve host names? Thanks, Andrew
RE: Access Log Valve
If I log onto the server running my tomcat installation and perform an nslookup on the ip that is sending the request it resolves. Running tomcat 5.0.27 as a service. -Original Message- From: QM [mailto:[EMAIL PROTECTED] Sent: August 31, 2004 10:31 AM To: Tomcat Users List Subject: Re: Access Log Valve On Tue, Aug 31, 2004 at 10:29:09AM -0400, Sinkinson,Andrew [NCR] wrote: : Reply-To: Tomcat Users List [EMAIL PROTECTED] : I have enabled access logging by uncomment the Access Log Valve in the : server.xml file. I have added the resolveHosts attribute and set it to : true. I have also changed the pattern attribute to %h so that I can : just get the Remote host name in the log file. In the access log file : I only get an ip address per request. Any ideas on why I am not able to : resolve host names? Just one -- perhaps the IPs in question do not resolve to hostnames. Put another way, those IPs may not be resolvable from the Tomcat host. -QM -- software -- http://www.brandxdev.net tech news -- http://www.RoarNetworX.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
AW: Access Log Valve
Forgot to enableLookups=true on the Connector. By default it is set to false :) -Original Message- From: QM [mailto:[EMAIL PROTECTED] Sent: August 31, 2004 10:31 AM To: Tomcat Users List Subject: Re: Access Log Valve On Tue, Aug 31, 2004 at 10:29:09AM -0400, Sinkinson,Andrew [NCR] wrote: : Reply-To: Tomcat Users List [EMAIL PROTECTED] : I have enabled access logging by uncomment the Access Log Valve in the : server.xml file. I have added the resolveHosts attribute and set it to : true. I have also changed the pattern attribute to %h so that I can : just get the Remote host name in the log file. In the access log file : I only get an ip address per request. Any ideas on why I am not able to : resolve host names? Just one -- perhaps the IPs in question do not resolve to hostnames. Put another way, those IPs may not be resolvable from the Tomcat host. -QM -- software -- http://www.brandxdev.net tech news -- http://www.RoarNetworX.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Configuring RemoteHostValve
I have tried using a lot of different regexps in the allow attribute of the valve element but have not had any luck. All I want is a regexps that validates that the dns is from .gc.ca Any help would be appreciated...thanks Andrew -Original Message- From: QM [mailto:[EMAIL PROTECTED] Sent: August 26, 2004 4:18 PM To: Tomcat Users List Subject: Re: Configuring RemoteHostValve On Thu, Aug 26, 2004 at 01:53:26PM -0400, Sinkinson,Andrew [NCR] wrote: : I am having difficulty in setting up a RemoteHostValve for my WebApp. : [snip] :Valve className=org.apache.catalina.valves.RemoteHostValve : allow=*.gc.ca/ ^^^ The docs state this should be a regular expression. What you've included here is not a regular expression, but a wildcard. Review a couple of sites/docs on regexps and you'll see what I mean. -QM -- software -- http://www.brandxdev.net tech news -- http://www.RoarNetworX.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Configuring RemoteHostValve
Hi All, I am having difficulty in setting up a RemoteHostValve for my WebApp. I have created a configuration descriptor file named CST_CLIENT.xml with the following Context defined: Context path=/CST_CLIENT Valve className=org.apache.catalina.valves.RemoteHostValve allow=*.gc.ca/ !-- Valve className=org.apache.catalina.valves.RemoteAddrValve allow=142.135.*/ -- /Context I am running Tomcat 5.0.27 on Windows 2000 Server. I have no problem when I use RemoteAddrValve but cannot get the RemoteHostValve to work. Here is the error in the stdout.log file: SEVERE: Error deploying configuration descriptor CST_CLIENT.xml java.io.IOException: java.lang.IllegalArgumentException: Syntax error in request filter pattern *.gc.ca at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDepl oyer.java:494) at org.apache.catalina.core.StandardHost.install(StandardHost.java:863) I have tried a lot of different regex expressions but have not had any luck. If I try to perform an NSLOOKUP on the server this works also without any problem. What am I missing? Any help would be appreciated! Thanks in advance Andrew
RE: Configuring RemoteHostValve
Has anyone been able to configure a Remote Host Filter for tomcat 5.0.27 that works? -Original Message- From: Sinkinson,Andrew [NCR] Sent: August 26, 2004 1:53 PM To: [EMAIL PROTECTED] Subject: Configuring RemoteHostValve Hi All, I am having difficulty in setting up a RemoteHostValve for my WebApp. I have created a configuration descriptor file named CST_CLIENT.xml with the following Context defined: Context path=/CST_CLIENT Valve className=org.apache.catalina.valves.RemoteHostValve allow=*.gc.ca/ !-- Valve className=org.apache.catalina.valves.RemoteAddrValve allow=142.135.*/ -- /Context I am running Tomcat 5.0.27 on Windows 2000 Server. I have no problem when I use RemoteAddrValve but cannot get the RemoteHostValve to work. Here is the error in the stdout.log file: SEVERE: Error deploying configuration descriptor CST_CLIENT.xml java.io.IOException: java.lang.IllegalArgumentException: Syntax error in request filter pattern *.gc.ca at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDepl oyer.java:494) at org.apache.catalina.core.StandardHost.install(StandardHost.java:863) I have tried a lot of different regex expressions but have not had any luck. If I try to perform an NSLOOKUP on the server this works also without any problem. What am I missing? Any help would be appreciated! Thanks in advance Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Tomcat unable to unpack WAR (sometimes)
Problem with tomcat 5 on Linux: Put WAR in webapps directory. Restart tomcat. Tomcat restarts ok but doesn't unpack WAR. No errors in catlania.out. Same WAR works ok on Windows machine. Although I'm not sure it is a Windows/Linux issue. Unpack WAR on Linux and re-jar. Then unpacks fine when tomcat restarts. We've previously had a similar problem and never figured it out. Has anyone else encountered this problem before? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: T5 ignoring mime mapping
As I stated, I used the jsp:directive syntax. You'd think the spec would be a little more clear about this. It's pretty easy to miss that brief sentence while scanning for answers... Thanks for the help. Andrew At 09:53 PM 8/17/2004, you wrote: JSPs don't use the mime-mappings from web.xml (per the JSP spec). You have to use the jsp:directive.page contentType=... / syntax. Andrew Shirk [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] This is pretty much a stock T5 install. No filters are configured for this app. So if it is indeed a servlet, it must be the faces servlet or the jsp servlet that is applying the text/xml mime type. However, as a work around, I am able to use a jsp directive to set the mime type from the document: jsp:directive.page contentType=text/html / This seems silly though since I'm already setting the mime type in web.xml. Andrew At 11:08 AM 8/17/2004, you wrote: It sounds like there is another servlet/filter/?? setting the content type to text/xml. -Tim Andrew Shirk wrote: Despite having set a mime mapping for the .faces extension in my web.xml, Tomcat 5 still insists on returning a JSP 2 documents with the .faces extension as text/xml. Am I doing something wrong? mime-mapping extensionfaces/extension mime-typetext/html/mime-type /mime-mapping - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
T5 ignoring mime mapping
Despite having set a mime mapping for the .faces extension in my web.xml, Tomcat 5 still insists on returning a JSP 2 documents with the .faces extension as text/xml. Am I doing something wrong? mime-mapping extensionfaces/extension mime-typetext/html/mime-type /mime-mapping - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: T5 ignoring mime mapping
This is pretty much a stock T5 install. No filters are configured for this app. So if it is indeed a servlet, it must be the faces servlet or the jsp servlet that is applying the text/xml mime type. However, as a work around, I am able to use a jsp directive to set the mime type from the document: jsp:directive.page contentType=text/html / This seems silly though since I'm already setting the mime type in web.xml. Andrew At 11:08 AM 8/17/2004, you wrote: It sounds like there is another servlet/filter/?? setting the content type to text/xml. -Tim Andrew Shirk wrote: Despite having set a mime mapping for the .faces extension in my web.xml, Tomcat 5 still insists on returning a JSP 2 documents with the .faces extension as text/xml. Am I doing something wrong? mime-mapping extensionfaces/extension mime-typetext/html/mime-type /mime-mapping - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: can't use EL c:out value=${obj.names}....
Hi Tobias
I've previously had the same problem. The cause, in my case, was that I
was declaring servlet spec 2.3 in web.xml. I changed this to 2.4 and it
resolved the problem. The declaration I have is
web-app xmlns=http://java.sun.com/xml/ns/j2ee;
xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
xsi:schemaLocation=http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd; version=2.4
Hope that helps
Regards
Andrew
Tobias Eriksson wrote:
Hi
For some reason I'm having difficulties getting something as simple as
this to work, see below.
The result I get is this, see below. It seems to me that the
VALUE-attribute is not evaluated. I've downloaded the JSTL-package from
apache's homepage and I've included the tld and jar files in the WEB-INF
dir.
I am not sure what to try next, so any pointers would be appreciated.
Regards
Tobias
***
This is my JSP page.
77
${ttt.val}
Name: ${ttt.val}
Parameter values passed to this page for each parameter:
${current.key}
${aVal}
**
%@ page language=java import=java.lang.*,java.util.* %
%@ taglib prefix=c uri=http://java.sun.com/jsp/jstl/core; %
html
head
base href=%=basePath%
titleMy JSP Tag-test page/title
/head
body
This is my JSP page. br
jsp:useBean id=ttt class=com.comopt.support.beans.TestBean
scope=request /
jsp:getProperty name=ttt property=val /
BR
c:out value=${ttt.val} /
BR
c:forEach items=${ttt.Names} var=aname
Name: c:out value=${ttt.val} /BR
/c:forEach
bParameter values passed to this page for each parameter: /b
table border=2
c:forEach var=current items=${param}
tr
td
bc:out value=${current.key} //b
/td
c:forEach var=aVal items=${paramValues[current.key]}
td
c:out value=${aVal} /
/td
/c:forEach
/tr
/c:forEach
/table
/body
/html
-
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Recursion in JSP
Does anyone know if I am able to use recursion to traverse a tree but then to use a
tag inside the recursive method? If that was unclear, I want to know if I can do this:
%!
void dfs(Node root){
%
tag:tree
%!
Vector children = root.getChildren();
for(int i=0; ichildren.size(); i++){
dfs((Node)(children.elementAt(i)));
}
%
/tag:tree
%!
}
%
Thanks,
Andrew Janian
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Protecting JSPs in Tomcat 5
In Tomcat 4, I would map request URLs to JSPs and handle the forwarding on the server side. Direct user access to JSPs was prevented using the following security constraint configuration: security-constraint display-nameJSP Protection/display-name web-resource-collection web-resource-nameJSPs/web-resource-name url-pattern*.jsp/url-pattern http-methodDELETE/http-method http-methodGET/http-method http-methodPOST/http-method http-methodPUT/http-method /web-resource-collection auth-constraint role-nameAdministrator/role-name /auth-constraint user-data-constraint transport-guaranteeNONE/transport-guarantee /user-data-constraint /security-constraint This seems to not work with Tomcat 5 as the constraint is applied even though no direct request is made by the user. Is this change in behavior the result of a spec change? I could find no such clarification. Thanks for the help. Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Protecting JSPs in Tomcat 5
Please disregard my previous post. I Thank you. At 03:20 PM 7/26/2004, you wrote: In Tomcat 4, I would map request URLs to JSPs and handle the forwarding on the server side. Direct user access to JSPs was prevented using the following security constraint configuration: security-constraint display-nameJSP Protection/display-name web-resource-collection web-resource-nameJSPs/web-resource-name url-pattern*.jsp/url-pattern http-methodDELETE/http-method http-methodGET/http-method http-methodPOST/http-method http-methodPUT/http-method /web-resource-collection auth-constraint role-nameAdministrator/role-name /auth-constraint user-data-constraint transport-guaranteeNONE/transport-guarantee /user-data-constraint /security-constraint This seems to not work with Tomcat 5 as the constraint is applied even though no direct request is made by the user. Is this change in behavior the result of a spec change? I could find no such clarification. Thanks for the help. Andrew - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How does the deploy descriptor work?
If it is not a typo then your problem is here: servlet-namemyRoot/servlet-name -- servlet-namemyRoot/servlet-name (missing a ) and then the next one too. Andrew -Original Message- From: Jon Doe [mailto:[EMAIL PROTECTED] Sent: Friday, July 23, 2004 3:11 PM To: [EMAIL PROTECTED] Subject: How does the deploy descriptor work? I thought I understood this, but clearly I don't! (Or at least my app doesn't work.) So, if I may, I would like to explain my understanding of how you create the deploy descriptor, and how it works in Tomcat. Just to get some clarity. OK, so I have a website, hosted as the context /mywebsite in Tomcat. So the localhost syntax to the root of this application is: http://localhost/mywebsite/ Now as I understand it, to get this URL to execute a servlet called Index (ie the class WEB-INF\classes\com\mywebsite\Index.class -- assumes Windows) I need to add this to the deployment descriptor: servlet servlet-namemyRoot/servlet-name servlet-classcom.mywebsite.Index/servlet-class /servlet servlet-mapping servlet-namemyRoot/servlet-name url-pattern//url-pattern /servlet-mapping That is straight forward. Now what if I want /Login, /Register, /Catalogue, etc? What is the url-pattern for these? If I enter /Login, for example, will this the call that servlet when I use this URL: http://localhost/mywebsite/Login If not, and I have to use a url-pattern of /mywebsite/Login, what happens if I decide to change the context path, or even to host it as a virtual server? Do I have to re-edit the web.xml file to reflect these changes? One final question. If the url-pattern for Login is /mywebsite/Login.something, does this mean the user has to type: http://localhost/mywebsite/Login.something for this to trigger? In short, is it the URL that is all important, and not the underlying filenames? (God knows how the wildcards work, so I've been trying to use 'full paths' as I thought this was easier. But I get no output even though I have lines writing to the ServletConfig log, to standard out and to the PrintWriter output!) If anyone can comment on the above -- such as it is totally accurate, or it is all rubbish -- that would be useful! Joe. _ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Tomcat fails to start
I am using Eclipse with MyEclipseIDE to run Tomcat. If I use the startup.bat for tomcat everything works fine. However, if I use eclipse to start tomcat i get the error below. Any ideas? The version of server.xml that you see below is near identical to server-minimal.xml. This has been happening for about a day now. There were no changes made when it started to occur, but since then I have reinstalled the JDK, Eclipse, and MyEclipseIDE. Thanks in advance, Andrew ?xml version='1.0' encoding='UTF-8'? Server port=8005 shutdown=SHUTDOWN GlobalNamingResources !-- Used by Manager webapp -- Resource name=UserDatabase auth=Container type=org.apache.catalina.UserDatabase description=User database that can be updated and saved /Resource ResourceParams name=UserDatabase parameter namefactory/name valueorg.apache.catalina.users.MemoryUserDatabaseFactory/value /parameter parameter namepathname/name valueconf/tomcat-users.xml/value /parameter /ResourceParams /GlobalNamingResources Service name=Catalina Connector port=8080/ !-- This is here for compatibility only, not required -- !-- Connector port=8009 protocol=AJP/1.3/ -- Engine name=Catalina defaultHost=localhost !-- Logger className=org.apache.catalina.logger.FileLogger/ Realm className=org.apache.catalina.realm.UserDatabaseRealm resourceName=UserDatabase/ -- !-- Host name=localhost appBase=webapps / -- /Engine /Service /Server Thread [main] (Suspended (exception EOFException)) XMLEntityScanner.load(int, boolean) line: not available XMLEntityScanner.skipSpaces() line: not available XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatch(boolean) line: not available XMLDocumentScannerImpl(XMLDocumentFragmentScannerImpl).scanDocument(boolean) line: not available XML11Configuration.parse(boolean) line: not available XML11Configuration.parse(XMLInputSource) line: not available SAXParser(XMLParser).parse(XMLInputSource) line: not available SAXParser(AbstractSAXParser).parse(InputSource) line: not available CatalinaDigester(Digester).parse(InputSource) line: 1548 Catalina.load() line: 489 Catalina.load(String[]) line: 528 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method] NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25 Method.invoke(Object, Object[]) line: 324 Bootstrap.load(String[]) line: 247 Bootstrap.main(String[]) line: 421 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Win2K, ApacheHTTPD2.0.5, Tomcat5 and JK2
Hello all
I've got a win2k server running Apache2.0.5, mod_jk2/2.0.2 and tomcat4.1, using the
inprocess worker
I am trying to upgrade to Tomcat 5 and mod_jk2/2.0.4
If I start Tomcat5 manually, then ApacheHTTPd and mod_jk2 succesfully pass the
requests through and jsp and servlets work. However, just starting the ApacheHTTP,
tomcat won't start.
I've tried upgrading just the mod_jk2 , and leaving Tomcat at 4.1, with no difference
- Tomcat doesn't appear to attempt to start.
If I try to upgrade Tomcat to 5 and leave mod_jk2 at mod_jk2/2.0.2, then I get errors
in the error.log regarding classes not found. I've tried various combinations of
classpath in the workers2.properties, including all the jar files in
${CATALINA_HOME}/bin and $(CATALINA_HOME}/server/lib. The class not found varies
depending on the classpath. With all the jar files in the classpath, there are no
errors re class not ofund, but the workers do not start.
Below are my workers2.properties and my jk2.properties.
Anyone made Apache/Tomcat5 communicate using the inprocess worker? Any tips?
Roo
jk2.properties
--
apr.jniModeSo=inprocess
workers2.properties
---
[logger]
level=ERROR
[shm]
file=D:/www/logs/jk2.shm
size=1048576
disabled=0
# Example socket channel, override port and host.
[channel.socket:localhost:8009]
port=8009
host=127.0.0.1
#InProcess Channel
[channel.jni:jni]
info=The jni channel - used if Tomcat is started inprocess
# define the worker
#[ajp13:localhost:8009]
#channel=channel.socket:localhost:8009
[vm:]
info=Parameters used to load a JVM in the server process
OPT=-Djava.class.path=C:/Programs/ApacheGroup/tomcat5/server/lib/tomcat-jk2.jar;C:/Programs/ApacheGroup/tomcat5/server/lib/catalina.jar;C:/Programs/ApacheGroup/tomcat5/server/lib/tomcat-jni.jar
OPT=-Dtomcat.home=C:/Programs/ApacheGroup/tomcat5
OPT=-Dcatalina.home=C:/Programs/ApacheGroup/tomcat5
OPT=-Xmx128M
disabled=0
[worker.jni:onStartup]
info=Command to be executed by the VM on startup. This one will start tomcat.
class=org/apache/jk/apr/TomcatStarter
ARG=start
disabled=0
stdout=D:/www/logs/stdout.log
stderr=D:/www/logs/stderr.log
[worker.jni:onShutdown]
info=Command to be executed by the VM on shutdown. This one will stop tomcat.
class=org/apache/jk/apr/TomcatStarter
ARG=stop
disabled=0
# Uri mapping
[uri:/ROOT/*]
[uri:/jsp-examples/*]
[uri:/servlets-examples/*]
[uri:/balancer/*]
[uri:/tomcat-docs/*]
#worker=ajp13:localhost:8009
# define the worker
[status:status]
# Uri mapping
[uri:/jkstatus/*]
worker=status:status
-
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Re: Apache miss handling jsp files
I'm not sure if someone already responded, but you may want to check httpd.conf, and ensure that index.jsp is added to the DirectoryIndex parameter. Andrew From: James Pohl [EMAIL PROTECTED] Subject: Apache miss handling jsp files I have tomcat 4 installed on a RedHat based server. I have aliases set up for a test domain. The site works fine when going to the test domain :8080, but when I try to go to the site without port :8080 the original tomcat page comes up. So it seems tomcat is working properly because the 8080 port answers correctly. So when apache answers it seems to ignore the DocumentRoot's index.jsp and serves the tomcat page. If I go to a phpinfo.php page within the DocumentRoot apache will answer properly. Can someone shed some light as to what I'm missing in the server set up. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to start a web app?
You don't get a login screen, you get a login popup. Not getting that either? Andrew -Original Message- From: Michael Labhard [mailto:[EMAIL PROTECTED] Sent: Thursday, July 08, 2004 1:12 PM To: Tomcat Users List Subject: Re: How to start a web app? Long story short: Tomcat does not search the webapps directory recursively for webapps; it loads contexts that are immediate children of the webapps directory. -QM QM: Thank you. That was it. I thought I could create subfolders at will. I must put all apps only one folder below. Any ideas about the problem with the Manager? I still cannot use it. Shouldn't I get a login screen as I do with the Administration option? -- Michael - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to start a web app?
Are you sure that Tomcat itself is running? Did the manager webapp get loaded. You should see in the logs that the manager webapp, administraion app, and a couple other examples get loaded if you are using Tomcat out of the box and have not disabled it. Did you provide a username and password when the box popped up? What was the result if so? Andrew -Original Message- From: Michael Labhard [mailto:[EMAIL PROTECTED] Sent: Thursday, July 08, 2004 1:19 PM To: Tomcat Users List Subject: Re: How to start a web app? On Thursday 08 July 2004 11:14 am, Andrew Janian wrote: You don't get a login screen, you get a login popup. Not getting that either? Nope, not getting that either. I did see it once, yesterday. Ever since, nothing. I have even reinstalled Tomcat without benefit. -- Michael - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to start a web app?
That looks about right. It is re-deploying the app after the context is removed (why it is removed at all i do not know). Everything looks fine. -Original Message- From: Michael Labhard [mailto:[EMAIL PROTECTED] Sent: Thursday, July 08, 2004 2:10 PM To: Tomcat Users List Subject: Re: How to start a web app? On Thursday 08 July 2004 11:50 am, Andrew Janian wrote: Are you sure that Tomcat itself is running? Would I not have trouble getting the Home page and logging into the Administration page were it not? Also, I can install, run and use JSP pages deployed to $CATALINA_HOME/webapps. I'm pretty sure it's running. Did the manager webapp get loaded. You should see in the logs that the manager webapp, administraion app, and a couple other examples get loaded if you are using Tomcat out of the box and have not disabled it. The log file shows these lines: Jul 8, 2004 11:24:19 AM org.apache.catalina.core.StandardHostDeployer remove INFO: Removing web application at context path /manager Jul 8, 2004 11:24:19 AM org.apache.catalina.core.StandardHostDeployer remove INFO: Removing web application at context path /admin Jul 8, 2004 11:24:19 AM org.apache.catalina.logger.LoggerBase stop INFO: unregistering logger Catalina:type=Logger,path=/admin,host=localhost Jul 8, 2004 11:24:29 AM org.apache.catalina.core.StandardHostDeployer install INFO: Processing Context configuration file URL file:/etc/tomcat/Catalina/localhost/manager.xml Jul 8, 2004 11:24:26 AM org.apache.catalina.core.StandardHostDeployer install INFO: Processing Context configuration file URL file:/etc/tomcat/Catalina/localhost/admin.xml Did you provide a username and password when the box popped up? What was the result if so? Yes, I did but it was the wrong ones and I was denied access at that time. I haven't had another chance. tomcat-users.xml looks like this: ?xml version='1.0' encoding='utf-8'? tomcat-users role rolename=tomcat/ role rolename=role1/ role rolename=manager/ role rolename=admin/ user username=mel password=tomcat roles=tomcat,admin,manager/ user username=tomcat password=tomcat roles=tomcat/ user username=role1 password=tomcat roles=role1/ /tomcat-users My username is mel. -- Michael - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Anyone really using JAX-RPC?
Yes, we're using it (Sun JWSDP). Works as advertised. Andrew At 03:43 PM 6/28/2004, you wrote: Folks, Is anyone out there running a deployed application using JAX-RPC for soap/wsi? If so, are you using Axis, or the Sun JWSDP stuff? Or something else entirely? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
How do I find out which version of tomcat is installed?
I have full access to the tomcat directory but I can't find the version number in any of the files. It's probably somewhere obvious but I just can't see it. Please help... - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
