RE: tomcat starting even after port is in use
> From: sudhir singh rana [mailto:sudhirsinghr...@gmail.com]
> Subject: Re: tomcat starting even after port is in use
>
> is there any way I can achieve this in 5.5.27
Not via configuration, as far as I know. You could change the code at lines
501-508 in org/apache/catalina/startup/Catalin.java from this:
// Start the new server
if (server instanceof Lifecycle) {
try {
server.initialize();
} catch (LifecycleException e) {
log.error("Catalina.start", e);
}
}
to this:
// Start the new server
if (server instanceof Lifecycle) {
try {
server.initialize();
} catch (LifecycleException e) {
if
(Boolean.getBoolean("org.apache.catalina.startup.EXIT_ON_INIT_FAILURE"))
throw new java.lang.Error(e);
else
log.error("Catalina.start", e);
}
}
to match the updated code in 6.0.x, allowing use of the system property. Or
just upgrade your Tomcat.
- Chuck
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Re: APR & Tomcat...
Interesting. I saw that when a static file was around 21K or below a dramatic improvement in recorded time in the log for APR. I have not tried with regular Apache Web Server to see what I get. Regards, -Tony - Original Message From: "Caldarale, Charles R" To: Tomcat Users List Sent: Mon, July 19, 2010 9:50:59 PM Subject: RE: APR & Tomcat... > From: Christopher Schultz [mailto:ch...@christopherschultz.net] > Subject: Re: APR & Tomcat... > > My tests show that use of sendFile is dramatically faster > than without. Was that vs BIO or NIO? As I recall, there is no sendFile capability in BIO, so both NIO and APR should beat that. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: tomcat starting even after port is in use
is there any way I can achieve this in 5.5.27 thanks On Tue, Jul 20, 2010 at 9:15 AM, Caldarale, Charles R < chuck.caldar...@unisys.com> wrote: > > From: sudhir singh rana [mailto:sudhirsinghr...@gmail.com] > > Subject: Re: tomcat starting even after port is in use > > > > I am using tomcat 5.5.27 and problem is that even tomcat > > got exception due to port in use it initialized my servlet > > I mean called init function. > > Not sure how to avoid that on Tomcat 5.5.27, but if you could move up to > 6.0 or 7.0, you can set the following system property to true: > > org.apache.catalina.startup.EXIT_ON_INIT_FAILURE > > The doc is at the end of this page: > http://tomcat.apache.org/tomcat-6.0-doc/config/systemprops.html > > - Chuck > > > THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY > MATERIAL and is thus for use only by the intended recipient. If you received > this in error, please contact the sender and delete the e-mail and its > attachments from all computers. > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
RE: APR & Tomcat...
> From: Christopher Schultz [mailto:ch...@christopherschultz.net] > Subject: Re: APR & Tomcat... > > My tests show that use of sendFile is dramatically faster > than without. Was that vs BIO or NIO? As I recall, there is no sendFile capability in BIO, so both NIO and APR should beat that. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers.
RE: tomcat starting even after port is in use
> From: sudhir singh rana [mailto:sudhirsinghr...@gmail.com] > Subject: Re: tomcat starting even after port is in use > > I am using tomcat 5.5.27 and problem is that even tomcat > got exception due to port in use it initialized my servlet > I mean called init function. Not sure how to avoid that on Tomcat 5.5.27, but if you could move up to 6.0 or 7.0, you can set the following system property to true: org.apache.catalina.startup.EXIT_ON_INIT_FAILURE The doc is at the end of this page: http://tomcat.apache.org/tomcat-6.0-doc/config/systemprops.html - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Dale, On 7/19/2010 7:42 PM, Dale Ogilvie wrote: > Reasons to use httpd being what? Here are a few ideas: 1. Load balancing 2. Use of mixed Java and non-Java webapps (PHP, Perl, etc.) 3. Use of multiple Tomcat instances behind a single web server If I thought about it, I could come up with a few more. > We historically have used httpd and > mod_proxy_ajp, but less being more I'm considering a tomcat only setup. Tomcat-only is a great setup when you have a non-complicated environment. If you can do it, I'd say "go for it". Fewer attack vectors, fewer packages to keep up-to-date, etc. Just remember to use APR+sendFile ;) Or even NIO+sendFile. > The reason we used httpd in the past was "httpd serves static content > better". That reason is no longer valid with a proper configuration. > One other reason that comes to mind is httpd url rewrite support, > assuming tomcat can't help in this area. Any others? tuckey's urlrewrite, though mod_rewrite is much more chainsawy than urlrewrite. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxFGwIACgkQ9CaO5/Lv0PAtCgCfQhy1SRwitWFe/YIcPYLLhp/G l3EAn1Xl0vj98K8+uLCR/XBN5W5fGs7Q =+w6j -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Chuck, On 7/19/2010 9:57 PM, Caldarale, Charles R wrote: >> From: Tony Anecito [mailto:adanec...@yahoo.com] >> Subject: Re: APR & Tomcat... >> >> So as to say the Tomcat group did not want to compete >> why build the APR? > > Tomcat people did not create it - APR has been around for years. > It's part of many products (e.g., subversion). > > What the Tomcat group did was provide a JNI interface to APR to allow > its use with Tomcat directly, primarily because OpenSSL is much > faster than the pure Java SSE equivalent. APR provides no > significant benefits for unencrypted content. My tests show that use of sendFile is dramatically faster than without. I did not benchmark SSL. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxFGgYACgkQ9CaO5/Lv0PCMCQCgt4f7Banncs4EqYkSE23Uk7CA k58An1LIVEB4vtipQpkLdkvIfjuzi50y =1ya/ -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: tomcat starting even after port is in use
I am using tomcat 5.5.27 and problem is that even tomcat got exception due to port in use it initialized my servlet I mean called init function. thanks On Mon, Jul 19, 2010 at 10:29 PM, Mark Thomas wrote: > > Hi, > > > > I started tomcat but tomcat port was in use. Due to this some > functionality > > of my program was not working. Tomcat gives the error when port is in use > > but it comes up. I want tomcat should not come up when port is in use. > > > > Can anyone help me > > Yes, but only when you provide some basic information such as exactly > which Tomcat version you are using. > > Mark > > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
RE: APR & Tomcat...
> From: Tony Anecito [mailto:adanec...@yahoo.com] > Subject: Re: APR & Tomcat... > > The disadvantages are such as when Tomcat is taken down > so does your static content. So why are you taking Tomcat down? "Doctor, doctor, it hurts when I do this!" > I am guessing better security for Apache Web Server > versus APR You're right - you're guessing. There's no evidence to support that conjecture. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: APR & Tomcat...
> From: Dale Ogilvie [mailto:dale.ogil...@trimble.co.nz] > Subject: RE: APR & Tomcat... > > Reasons to use httpd being what? Serving PHP and as a poor man's load balancer, for starters. > The reason we used httpd in the past was "httpd serves > static content better". Which hasn't been true for some years. > One other reason that comes to mind is httpd url rewrite support, The equivalent for Tomcat is here: http://www.tuckey.org/urlrewrite/ > /still hoping my tomcat download license doesn't get > revoked before tomcat 7 is released/ Too late: Tomcat 7 has been released - albeit still beta. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: APR & Tomcat...
> From: Tony Anecito [mailto:adanec...@yahoo.com] > Subject: Re: APR & Tomcat... > > So as to say the Tomcat group did not want to compete > why build the APR? Tomcat people did not create it - APR has been around for years. It's part of many products (e.g., subversion). What the Tomcat group did was provide a JNI interface to APR to allow its use with Tomcat directly, primarily because OpenSSL is much faster than the pure Java SSE equivalent. APR provides no significant benefits for unencrypted content. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
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RE: APR & Tomcat...
Next experiment can be Varnish in front of Tomcat with APR :) I'm having a lot of fun with it with mostly stateless apps and to optimize some test projects, but haven't had an opportunity to deploy it in any large configuration. It provides a lot of great features and can really be used to tune the heck out of static and semi-static content! -- Richard Maynard -Original Message- From: Tony Anecito [mailto:adanec...@yahoo.com] Sent: Monday, July 19, 2010 7:42 PM To: Tomcat Users List Subject: Re: APR & Tomcat... I used APR for performance reasons. I was running Apache Web Server and Tomcat on the same physical windows server. I mentioned what configuration might be faster and was told APR native with Tomcat and it was faster. I might have gone from 1.5 to 1.0 milliseconds for JAXWS requests. The disadvantages are such as when Tomcat is taken down so does your static content. Apache Web Server is probably updated more frequently than APR Native. I am guessing better security for Apache Web Server versus APR and probably more that the Tomcat and Apache Web Server teams can agree upon such as load balancing. So APR Native was an experiment for me not a final solution. Time to go back to reality. Thanks, -Tony - Original Message From: Dale Ogilvie To: Tomcat Users List Sent: Mon, July 19, 2010 5:42:39 PM Subject: RE: APR & Tomcat... Reasons to use httpd being what? We historically have used httpd and mod_proxy_ajp, but less being more I'm considering a tomcat only setup. The reason we used httpd in the past was "httpd serves static content better". One other reason that comes to mind is httpd url rewrite support, assuming tomcat can't help in this area. Any others? Dale /still hoping my tomcat download license doesn't get revoked before tomcat 7 is released/ -Original Message- From: Christopher Schultz [mailto:ch...@christopherschultz.net] Sent: Tuesday, 20 July 2010 9:51 a.m. To: Tomcat Users List Subject: Re: APR & Tomcat... There certainly are reasons to use Apache httpd out in front of Tomcat, but performance isn't one of them. - -chris - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org Confidentiality Notice: This e-mail message (including any attached or embedded documents) is intended for the exclusive and confidential use of the individual or entity to which this message is addressed, and unless otherwise expressly indicated, is confidential and privileged information of Rackspace. Any dissemination, distribution or copying of the enclosed material is prohibited. If you receive this transmission in error, please notify us immediately by e-mail at ab...@rackspace.com, and delete the original message. Your cooperation is appreciated. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
I used APR for performance reasons. I was running Apache Web Server and Tomcat on the same physical windows server. I mentioned what configuration might be faster and was told APR native with Tomcat and it was faster. I might have gone from 1.5 to 1.0 milliseconds for JAXWS requests. The disadvantages are such as when Tomcat is taken down so does your static content. Apache Web Server is probably updated more frequently than APR Native. I am guessing better security for Apache Web Server versus APR and probably more that the Tomcat and Apache Web Server teams can agree upon such as load balancing. So APR Native was an experiment for me not a final solution. Time to go back to reality. Thanks, -Tony - Original Message From: Dale Ogilvie To: Tomcat Users List Sent: Mon, July 19, 2010 5:42:39 PM Subject: RE: APR & Tomcat... Reasons to use httpd being what? We historically have used httpd and mod_proxy_ajp, but less being more I'm considering a tomcat only setup. The reason we used httpd in the past was "httpd serves static content better". One other reason that comes to mind is httpd url rewrite support, assuming tomcat can't help in this area. Any others? Dale /still hoping my tomcat download license doesn't get revoked before tomcat 7 is released/ -Original Message- From: Christopher Schultz [mailto:ch...@christopherschultz.net] Sent: Tuesday, 20 July 2010 9:51 a.m. To: Tomcat Users List Subject: Re: APR & Tomcat... There certainly are reasons to use Apache httpd out in front of Tomcat, but performance isn't one of them. - -chris - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: APR & Tomcat...
Reasons to use httpd being what? We historically have used httpd and mod_proxy_ajp, but less being more I'm considering a tomcat only setup. The reason we used httpd in the past was "httpd serves static content better". One other reason that comes to mind is httpd url rewrite support, assuming tomcat can't help in this area. Any others? Dale /still hoping my tomcat download license doesn't get revoked before tomcat 7 is released/ -Original Message- From: Christopher Schultz [mailto:ch...@christopherschultz.net] Sent: Tuesday, 20 July 2010 9:51 a.m. To: Tomcat Users List Subject: Re: APR & Tomcat... There certainly are reasons to use Apache httpd out in front of Tomcat, but performance isn't one of them. - -chris - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
For each image I would get a small red x. When I hit refresh and it then display them. Comments like this on Confluence web site for example explain: After a bit of Googling came across this: "Apache Portable Runtime to provide superior scalability, performance" for Tomcat 6. There are comments that when using the APR Tomcat will server static content on par with Apache (httpd) server speeds - though I haven't been able to personally verify this just yet. Or from the Tomcat site itself http://tomcat.apache.org/tomcat-5.5-doc/apr.html: Tomcat can use the Apache Portable Runtime to provide superior scalability, performance, and better integration with native server technologies. The Apache Portable Runtime is a highly portable library that is at the heart of Apache HTTP Server 2.x. APR has many uses, including access to advanced IO functionality (such as sendfile, epoll and OpenSSL), OS level functionality (random number generation, system status, etc), and native process handling (shared memory, NT pipes and Unix sockets). >These features allows making Tomcat a general purpose webserver, will enable >much better integration with other native web technologies, and overall make >Java much more viable as a full fledged webserver platform rather than simply >a >backend focused technology. > So as to say the Tomcat group did not want to compete why build the APR? In either case it does not matter for me but I do appreciate the feedback. Regards, -Tony - Original Message From: Christopher Schultz To: Tomcat Users List Sent: Mon, July 19, 2010 3:51:28 PM Subject: Re: APR & Tomcat... -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tony, On 7/19/2010 5:21 PM, Tony Anecito wrote: > First off I get a little red x in the upper left hand corner of the web page. For the whole page? I thought this was an image problem. > Yep I agree maybe an upgrade to the latest Tomcat and APR might accomplish > fixing the problem but silly me I like to understand an issue before I upgrade. Upgrading is a good idea, but is unlikely to magically fix everything. I'm unaware of any huge bugs in Tomcat 6.0.20 like "web server doesn't work at all". > APR==httpd at least that is what the Apache Web site says and the acronym I > put > > up on the title page is about. The Apache Web server group disavow any >knowledge > > of APR since they say the Tomcat Group developed to to replace Apache Web > Server. APR != httpd The "Tomcat Group" neither developed APR nor did they do it to undercut anything the httpd group is doing. On the contrary, libapr is a project to help many other projects, including httpd itself. http://apr.apache.org/ http://apr.apache.org/projects.html http://en.wikipedia.org/wiki/Apache_Portable_Runtime > What little info I could find seems to indicate APR uses the ROOT directory > under Webapps for html based apps. APR does nothing of the sort. APR essentially provides two major capabilities to Tomcat: 1. SSL services using OpenSSL library instead of Java-based SSL 2. "Sendfile" services to serve static content directly from disk-to-socket with minimal overhead Both of these features are configured on a in Tomcat and will work with any webapp deployed into the container. It has nothing to do with ROOT or any other specific webapp. > I will probably go back to Apache Web server as a separate tier. I was trying >to > > get better performance using APR + Tomcat and saw some but not enough to >justify > > the advantages of a seperate tier. Apache httpd + Tomcat will always be slower than simply using Tomcat + APR/sendfile because of the overhead involved in forwarding the requests back and forth. The only exception might be a site which is almost exclusively static content and only one or two dynamic resources. In that case, I might ask why that person was using Java in the first place ;) There certainly are reasons to use Apache httpd out in front of Tomcat, but performance isn't one of them. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxEyOAACgkQ9CaO5/Lv0PD+ngCdGoi80vMKrjB7UMP9kQKyLaS3 X/UAnjslqqAnc7796Xr14ic5cDEckPYl =vtNH -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: IP based request filters for admin/manager
Christopher Schultz wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Johan, On 7/18/2010 11:48 PM, Johan Martinez wrote: Started afresh and got it working finally. I tried with and without escape character and both worked. Probably because . matches '.'. Yep. :-) Johan, if you are still there, a bit more explicitly : The regexp /123.123.123.123/ will match th string "123.123.123.123", but also the strings "123#123#123#123" and "123?123X123+123" (and many other similar ones), because in a regexp a non-escaped "." matches any single character. On the other hand, the regexp /123\.123\.123\.123/ will only match the string "123.123.123.123", because escaping the "." by a backslash means "a literal dot". - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: SEVERE message from DeltaManager
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Mark, On 7/19/2010 6:00 PM, Mark Thomas wrote: > On 19/07/2010 22:36, Christopher Schultz wrote: >> Mark, >> >> On 7/19/2010 1:07 PM, Mark Thomas wrote: >>> Testing shows that it is caused by using async session replication. If >>> you use synchronous replication that ensures messages are processed on >>> the receiving nodes in the order they are sent. Asynchronous replication >>> in conjunction with the fact the the receiving node uses a thread pool >>> to process messages means that it is possible for messages to be >>> processed out of sequence. If a session invalidate is processed before >>> and update then you'll see this error. >> >> I am by no means an expert on Tomcat clustering (nor any other container >> clustering for that matter), but it seems to me that a potential >> solution would be to use a replication queue something like this: >> >> Client event -> server queue -> event handled >> ^^ >> server thread poolserver replication thread pool >> >> If the queue were synchronized and a priority queue (based upon >> timestamp) or queueing were guaranteed on the basis of event reception, >> then the use of asynchronous versus synchronous replication should >> always result in deterministic replication behavior. > > Not sure what you are proposing here. > > Async replication means that multiple messages for a single session may > be sent from node A before node B has a chance to process them. Duh. No amount of queuing can fix that. I obviously wasn't thinking very clearly... I was thinking about a server (meaning the receiving node) processing the events out-of-order after it had received them (or as part of a non-deterministic event-processing thread priority) rather than the client failing to send them in a timely manner. > I think this comes down to a simple trade-off between performance > (async) and deterministic (sync) behaviour. I think the constraints you > would have to impose to make the async deterministic would remove most > of the benefits. Agreed. Something that could be done is that this error message might be demoted from SEVERE to WARNING if async replication is being used. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxEzIwACgkQ9CaO5/Lv0PDjogCeNhn487GRHsNUG4ys1FA7Gsss VNAAnibzqtKWhVx7GSw1wNbqj9aMM4XK =q+n/ -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: How to retrieve persisted session
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Ashish, On 7/19/2010 4:48 PM, Ashish Kulkarni wrote: > Is there a way i can save this session cookie, so i can access it later? is > it possible Set the maxAge of the session to something other than -1 (the default, which means "this cookie will die when the browser shuts down"). > How does yahoo or gmail keep me signed on for 2-3 days See above. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxEy5YACgkQ9CaO5/Lv0PAZhACfTxY8EWC5c1yhNbwA64AgLPRH 9NQAoKxsfFPaqiX/2WHLpZkcg6VAjAAw =4ABC -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: SEVERE message from DeltaManager
On 19/07/2010 22:36, Christopher Schultz wrote: > Mark, > > On 7/19/2010 1:07 PM, Mark Thomas wrote: >> Testing shows that it is caused by using async session replication. If >> you use synchronous replication that ensures messages are processed on >> the receiving nodes in the order they are sent. Asynchronous replication >> in conjunction with the fact the the receiving node uses a thread pool >> to process messages means that it is possible for messages to be >> processed out of sequence. If a session invalidate is processed before >> and update then you'll see this error. > > I am by no means an expert on Tomcat clustering (nor any other container > clustering for that matter), but it seems to me that a potential > solution would be to use a replication queue something like this: > > Client event -> server queue -> event handled > ^^ > server thread poolserver replication thread pool > > If the queue were synchronized and a priority queue (based upon > timestamp) or queueing were guaranteed on the basis of event reception, > then the use of asynchronous versus synchronous replication should > always result in deterministic replication behavior. Not sure what you are proposing here. Async replication means that multiple messages for a single session may be sent from node A before node B has a chance to process them. The issue is that if multiple session update messages from node A are in node B's input queue and B processes that queue with multiple threads, it is possible - depending on thread prioritisation - for node B to process the messages out of order even if node B removes them from its queue in order. Fixing it would require limiting node B to processing a single message per session from node A at a time. (assuming messages were send and received in order). I think this comes down to a simple trade-off between performance (async) and deterministic (sync) behaviour. I think the constraints you would have to impose to make the async deterministic would remove most of the benefits. As an aside, if a UA sends multiple requests in parallel to a single node then you have little control of the order that events will occur in the session anyway. > I'm interested to know why synchronous replication solves this > problem... is it a client event queuing problem when asynchronous > replication is used? Or does either the client or the server serialize > processing of replication events in some way only when synchronous > replication is being used? Synchronous replication essentially ensures that node B only ever has at most one message from node A for a single session and therefore has to process them in order. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tony, On 7/19/2010 5:21 PM, Tony Anecito wrote: > First off I get a little red x in the upper left hand corner of the web page. For the whole page? I thought this was an image problem. > Yep I agree maybe an upgrade to the latest Tomcat and APR might accomplish > fixing the problem but silly me I like to understand an issue before I > upgrade. Upgrading is a good idea, but is unlikely to magically fix everything. I'm unaware of any huge bugs in Tomcat 6.0.20 like "web server doesn't work at all". > APR==httpd at least that is what the Apache Web site says and the acronym I > put > up on the title page is about. The Apache Web server group disavow any > knowledge > of APR since they say the Tomcat Group developed to to replace Apache Web > Server. APR != httpd The "Tomcat Group" neither developed APR nor did they do it to undercut anything the httpd group is doing. On the contrary, libapr is a project to help many other projects, including httpd itself. http://apr.apache.org/ http://apr.apache.org/projects.html http://en.wikipedia.org/wiki/Apache_Portable_Runtime > What little info I could find seems to indicate APR uses the ROOT directory > under Webapps for html based apps. APR does nothing of the sort. APR essentially provides two major capabilities to Tomcat: 1. SSL services using OpenSSL library instead of Java-based SSL 2. "Sendfile" services to serve static content directly from disk-to-socket with minimal overhead Both of these features are configured on a in Tomcat and will work with any webapp deployed into the container. It has nothing to do with ROOT or any other specific webapp. > I will probably go back to Apache Web server as a separate tier. I was trying > to > get better performance using APR + Tomcat and saw some but not enough to > justify > the advantages of a seperate tier. Apache httpd + Tomcat will always be slower than simply using Tomcat + APR/sendfile because of the overhead involved in forwarding the requests back and forth. The only exception might be a site which is almost exclusively static content and only one or two dynamic resources. In that case, I might ask why that person was using Java in the first place ;) There certainly are reasons to use Apache httpd out in front of Tomcat, but performance isn't one of them. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxEyOAACgkQ9CaO5/Lv0PD+ngCdGoi80vMKrjB7UMP9kQKyLaS3 X/UAnjslqqAnc7796Xr14ic5cDEckPYl =vtNH -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Unable to get Tomcat 7 to work in Eclipse
The resource for my web page servlet can't be located. This was not the case with Tomcat 6. Nobody complained once I started getting a good Tomcat launch. There are no logs in the Tomcat home. On Mon, Jul 19, 2010 at 1:56 PM, Pid wrote: > On 19/07/2010 20:13, Austin Shelton wrote: > > Hi, > > > > I am unable to get Tomcat 7.0.0 to work correctly with Eclipse Helios. > > Tomcat 6 was working just fine; the problem occurred when I upgraded to > > Tomcat 7.0. It complained about "Resource Not found. I now have it > working > > to the extent that no errors or warning show up in the console. But I do > not > > get my page, without errors, to display. Any tips on solving this > problem? > > > > Thanks > > Which resource isn't found? > > What complained, your browser, Eclipse, or Tomcat? > > What do the Tomcat logs say? (Note: they may be in a different location > than a normal Tomcat installation) > > > p > >
Re: SEVERE message from DeltaManager
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Mark, On 7/19/2010 1:07 PM, Mark Thomas wrote: > Testing shows that it is caused by using async session replication. If > you use synchronous replication that ensures messages are processed on > the receiving nodes in the order they are sent. Asynchronous replication > in conjunction with the fact the the receiving node uses a thread pool > to process messages means that it is possible for messages to be > processed out of sequence. If a session invalidate is processed before > and update then you'll see this error. I am by no means an expert on Tomcat clustering (nor any other container clustering for that matter), but it seems to me that a potential solution would be to use a replication queue something like this: Client event -> server queue -> event handled ^^ server thread poolserver replication thread pool If the queue were synchronized and a priority queue (based upon timestamp) or queueing were guaranteed on the basis of event reception, then the use of asynchronous versus synchronous replication should always result in deterministic replication behavior. I'm interested to know why synchronous replication solves this problem... is it a client event queuing problem when asynchronous replication is used? Or does either the client or the server serialize processing of replication events in some way only when synchronous replication is being used? Thanks, - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxExXAACgkQ9CaO5/Lv0PDeegCgvZeiKaApROcZguagjOmEcDhB GbcAnjg48ECuBvfYBRau0hMjnZlyYYi3 =UnUy -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat7 HTTPS APR Performance
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Shivani, On 7/19/2010 2:02 PM, shivanic wrote: > I would recheck the performance stats with 100 users with HTTP protocol > instead of HTTPS and revert back. Mladen Turk has mentioned that only > constant response time (and not allowing the factors that make it vary like > access to external resources) - can determine the absolute picture of the > container behavior. I agree on that point - however as you can see the > differences are huge - specifically the average response time wrt op like > login to application. Login involves a simple ldap bind and the test case > involves only login with correct pwd. Still, you ought to be able to login faster than even 38 seconds on average if all you're doing is a simple LDAP authentication. Yes, Tomcat7 appears to take ~3x as long, but your baseline time still stinks. Perhaps you have a hideous misconfiguration somewhere? - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxEw6YACgkQ9CaO5/Lv0PDgqgCgj8Q0jNbxpMPLmX/Zqg5nY/py yEsAniVn/6oya0vVGqaGM/ezmXbjdXsX =ShZX -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: IP based request filters for admin/manager
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Johan, On 7/18/2010 11:48 PM, Johan Martinez wrote: > Started afresh and got it working finally. > > I tried with and without escape character and both worked. Probably because . matches '.'. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxEwrcACgkQ9CaO5/Lv0PAi4ACgw79srQYS9kezOpXogU/9TrU9 vcIAn1gIBO8SNyJkmml5mKX/KWDCKWNE =hbFT -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
Hi Pid First off I get a little red x in the upper left hand corner of the web page. Yep I agree maybe an upgrade to the latest Tomcat and APR might accomplish fixing the problem but silly me I like to understand an issue before I upgrade. APR==httpd at least that is what the Apache Web site says and the acronym I put up on the title page is about. The Apache Web server group disavow any knowledge of APR since they say the Tomcat Group developed to to replace Apache Web Server. What little info I could find seems to indicate APR uses the ROOT directory under Webapps for html based apps. I will probably go back to Apache Web server as a separate tier. I was trying to get better performance using APR + Tomcat and saw some but not enough to justify the advantages of a seperate tier. Best Regards, -Tony - Original Message From: Pid To: Tomcat Users List Sent: Mon, July 19, 2010 3:05:41 PM Subject: Re: APR & Tomcat... On 19/07/2010 19:44, Tony Anecito wrote: > Hi All, > > I have been having odd issues with APR & Tomcat (6.0.20) since I set it up a > while ago. I am seeing: Time for an upgrade. > 1. Sometimes on the first try to get images from a page where the images are > assigned a sub domain via a host tag I get a red x. Hitting refresh seems to > retrieve the images. The images are in a subfolder off of the ROOT folder of > tomcat. Can you reproduce the problem? What does the client actually see? You can use a browser tool to find out, e.g. Firebug in Firefox. Fiddler, ieHttpHeaders in IE, the built-in developer tools in Safari/Chrome. What does the server actually send? You didn't state your OS (tsk) but there are tools available for most OS which will allow you to monitor network traffic at the server. (e.g. Wireshark). > 2. I get a file not found off of another folder where the file is a jnlp file. > > > So is there any type of directory tag (allow, deny ect) I should be using for > the sub folders off or ROOT? When I used Apache Web server I set those up but > then I was not using a Host tag either. But for APR I did not set up any type > directory tags. No there isn't. Tomcat != Apache HTTPD. Security permissions are set in the "ROOT/WEB-INF/web.xml", as per the Servlet Spec. p > If I need the directory tags where would I put them? > > Thanks, > -Tony > > > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat 5.5.23 server startup issue
On 19/07/2010 17:23, Venkat Tanga wrote: > *Hi All, > > I am facing the below mentioned issues in the server startup. hence > the server is not starting up. > > Can any one plz help me how to resolve these issues. * > > Jul 19, 2010 9:41:30 PM org.apache.catalina.startup.HostConfig > deployDescriptor > SEVERE: Error deploying configuration descriptor host-manager.xml > java.lang.NoSuchMethodError: > org.apache.naming.NamingContextBindingsEnumeration.(Ljava/util/Iterator;Ljavax/naming/Context;)V > >at > org.apache.naming.resources.FileDirContext.listBindings(FileDirContext.java:338) > >at > org.apache.naming.resources.ProxyDirContext.listBindings(ProxyDirContext.java:516) > >at > org.apache.catalina.util.ExtensionValidator.validateApplication(ExtensionValidator.java:175) > >at > org.apache.catalina.core.StandardContext.start(StandardContext.java:4064) >at > org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760) > >at > org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740) >at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544) >at > org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:626) > >at > org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:553) > >at > org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488) >at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138) >at > org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) >at > org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120) > >at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022) >at org.apache.catalina.core.StandardHost.start(StandardHost.java:736) >at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014) >at > org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) >at > org.apache.catalina.core.StandardService.start(StandardService.java:448) >at > org.apache.catalina.core.StandardServer.start(StandardServer.java:700) >at org.apache.catalina.startup.Catalina.start(Catalina.java:552) >at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) >at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) >at java.lang.reflect.Method.invoke(Unknown Source) >at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295) >at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433) > Jul 19, 2010 9:41:30 PM org.apache.catalina.startup.HostConfig > deployDescriptor > SEVERE: Error deploying configuration descriptor manager.xml > java.lang.NoSuchMethodError: > org.apache.naming.NamingContextBindingsEnumeration.(Ljava/util/Iterator;Ljavax/naming/Context;)V > >at > org.apache.naming.resources.FileDirContext.listBindings(FileDirContext.java:338) > >at > org.apache.naming.resources.ProxyDirContext.listBindings(ProxyDirContext.java:516) > >at > org.apache.catalina.util.ExtensionValidator.validateApplication(ExtensionValidator.java:175) > >at > org.apache.catalina.core.StandardContext.start(StandardContext.java:4064) >at > org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760) > >at > org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740) >at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544) >at > org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:626) > >at > org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:553) > >at > org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488) >at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138) >at > org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) >at > org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120) > >at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022) >at org.apache.catalina.core.StandardHost.start(StandardHost.java:736) >at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014) >at > org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) >at > org.apache.catalina.core.StandardService.start(StandardService.java:448) >at > org.apache.catalina.core.StandardServer.start(StandardServer.java:700) >at org.apache.catalina.startup.Catalina.start(Catalina.java:552) >at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) >at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) >at java.lang.reflect.Method.invoke(Unknown Source) >at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295) >at org.apache.catalina.startup.Bootstrap.main(Bootst
Re: Unable to get Tomcat 7 to work in Eclipse
On 19/07/2010 20:13, Austin Shelton wrote: > Hi, > > I am unable to get Tomcat 7.0.0 to work correctly with Eclipse Helios. > Tomcat 6 was working just fine; the problem occurred when I upgraded to > Tomcat 7.0. It complained about "Resource Not found. I now have it working > to the extent that no errors or warning show up in the console. But I do not > get my page, without errors, to display. Any tips on solving this problem? > > Thanks Which resource isn't found? What complained, your browser, Eclipse, or Tomcat? What do the Tomcat logs say? (Note: they may be in a different location than a normal Tomcat installation) p signature.asc Description: OpenPGP digital signature
Re: APR & Tomcat...
On 19/07/2010 19:44, Tony Anecito wrote: > Hi All, > > I have been having odd issues with APR & Tomcat (6.0.20) since I set it up a > while ago. I am seeing: Time for an upgrade. > 1. Sometimes on the first try to get images from a page where the images are > assigned a sub domain via a host tag I get a red x. Hitting refresh seems to > retrieve the images. The images are in a subfolder off of the ROOT folder of > tomcat. Can you reproduce the problem? What does the client actually see? You can use a browser tool to find out, e.g. Firebug in Firefox. Fiddler, ieHttpHeaders in IE, the built-in developer tools in Safari/Chrome. What does the server actually send? You didn't state your OS (tsk) but there are tools available for most OS which will allow you to monitor network traffic at the server. (e.g. Wireshark). > 2. I get a file not found off of another folder where the file is a jnlp file. > > > So is there any type of directory tag (allow, deny ect) I should be using for > the sub folders off or ROOT? When I used Apache Web server I set those up but > then I was not using a Host tag either. But for APR I did not set up any type > directory tags. No there isn't. Tomcat != Apache HTTPD. Security permissions are set in the "ROOT/WEB-INF/web.xml", as per the Servlet Spec. p > If I need the directory tags where would I put them? > > Thanks, > -Tony > > > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > signature.asc Description: OpenPGP digital signature
Re: How to retrieve persisted session
Hi Is there a way i can save this session cookie, so i can access it later? is it possible How does yahoo or gmail keep me signed on for 2-3 days Ashish On Mon, Jul 19, 2010 at 4:43 PM, Mark Thomas wrote: > On 19/07/2010 20:48, Ashish Kulkarni wrote: > > Hi > > I have configured my tomcat to save session in database as per > > documentation, and it works as expected i can see the session is saved in > > database, > > Now if the user closes the browser, and then reopens i dont want to show > the > > login screen but get the session from database and go to the last visited > > page, > > how can i retrieve this session from database, > > You can't. Once the browser is closed, the session cookie is removed > from the browser. > > Mark > > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > -- Ashish www.ayurwellness.com www.mysoftwareneeds.com
Re: How to retrieve persisted session
On 19/07/2010 20:48, Ashish Kulkarni wrote: > Hi > I have configured my tomcat to save session in database as per > documentation, and it works as expected i can see the session is saved in > database, > Now if the user closes the browser, and then reopens i dont want to show the > login screen but get the session from database and go to the last visited > page, > how can i retrieve this session from database, You can't. Once the browser is closed, the session cookie is removed from the browser. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: using Apache as a front end for Tomcat
James Godrej wrote: Hi, it would be very kind of you people if some one can share how can I use Apache as a front end to Tomcat. I am having an application in CATALINA_HOME/webapps and I can access it as http://localhost:9090/portal Thanks Apart from the recommendations you already got, it may help to indicate which versions of Apache and Tomcat you are using, and on which platform. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
How to retrieve persisted session
Hi I have configured my tomcat to save session in database as per documentation, and it works as expected i can see the session is saved in database, Now if the user closes the browser, and then reopens i dont want to show the login screen but get the session from database and go to the last visited page, how can i retrieve this session from database, Normally our application checks for session, and a flag in session, if the flag is on then user id logged in, but in my current application if i open new browser window, it creates a new session, any ideas -- Ashish www.ayurwellness.com www.mysoftwareneeds.com
Re: using Apache as a front end for Tomcat
Hi James, > Marco thanks for your kind reply. > Your welcome ;-) > I am a bit new to this Proxy business I did searched tutorials on net but I > have > got a lot confused. > If you can share your vhost as how you are using mod_proxy_ajp > > For example following is an example configuration of Apache as front end > I enabled mod_proxy_ajp as per your instructions. > > > ServerName myserver.com > > > > ProxyPass ajp://192.168.1.5:9090/portal > ProxyPassReverse ajp://192.168.1.5:9090/portal > > > > > > > Is this what you meant for the front end. > Or I also need to do some thing where sakai is present. > This is basically what I meant. You don't even need a Location container. You can put this configuration options for mod_proxy_ajp directly inside the Server or Vhost container like this: SetEnv BALANCER_SESSION_STICKY jsessionid ProxyRequests Off ProxyPreserveHost Off # Hudson continous integration server ProxyPass /hudson ajp://localhost:1/hudson ProxyPassReverse /hudson ajp://localhost:1/hudson As you can see there are general options for mod_proxy/mod_proxy_ajp you can tweak but the most important are the ProxyPass and ProxyPassReverse directive which you can just copy for any web application URL you want to forward to Tomcat. Of course the port number in these directives must match the port of your AJP connector of Tomcat inside the server.xml configuration for Tomcat. The directives and parameters are well documented on the Apache module documentation pages and in the Tomcat documentation too. Of course it's a huge topic to understand the Apache configuration itself in detail, so it's almost impossible to explain every option here. But the configuration snippets above show the important things which are needed to get an existing Apache config working with Tomcat backend(s). Marco - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Unable to get Tomcat 7 to work in Eclipse
Hi, I am unable to get Tomcat 7.0.0 to work correctly with Eclipse Helios. Tomcat 6 was working just fine; the problem occurred when I upgraded to Tomcat 7.0. It complained about "Resource Not found. I now have it working to the extent that no errors or warning show up in the console. But I do not get my page, without errors, to display. Any tips on solving this problem? Thanks
Re: using Apache as a front end for Tomcat
Hi, Marco thanks for your kind reply. I am a bit new to this Proxy business I did searched tutorials on net but I have got a lot confused. If you can share your vhost as how you are using mod_proxy_ajp For example following is an example configuration of Apache as front end I enabled mod_proxy_ajp as per your instructions. ServerName myserver.com ProxyPass ajp://192.168.1.5:9090/portal ProxyPassReverse ajp://192.168.1.5:9090/portal Is this what you meant for the front end. Or I also need to do some thing where sakai is present.
Re: using Apache as a front end for Tomcat
Thanks Caldarale,I will go through all of them. From: "Caldarale, Charles R" To: Tomcat Users List Sent: Tue, 20 July, 2010 12:29:48 AM Subject: RE: using Apache as a front end for Tomcat > From: James Godrej [mailto:jamesgod...@yahoo.in] > Subject: using Apache as a front end for Tomcat > > it would be very kind of you people if some one can share > how can I use Apache as a front end to Tomcat. A lot of it is in the FAQ and doc: http://wiki.apache.org/tomcat/FAQ/Connectors http://wiki.apache.org/tomcat/HowTo#How_do_I_configure_Tomcat_Connectors.3F http://tomcat.apache.org/connectors-doc/ I'd strongly recommend looking at the above before Googling. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers.
RE: using Apache as a front end for Tomcat
> From: James Godrej [mailto:jamesgod...@yahoo.in] > Subject: using Apache as a front end for Tomcat > > it would be very kind of you people if some one can share > how can I use Apache as a front end to Tomcat. A lot of it is in the FAQ and doc: http://wiki.apache.org/tomcat/FAQ/Connectors http://wiki.apache.org/tomcat/HowTo#How_do_I_configure_Tomcat_Connectors.3F http://tomcat.apache.org/connectors-doc/ I'd strongly recommend looking at the above before Googling. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers.
Re: using Apache as a front end for Tomcat
Hi James! > it would be very kind of you people if some one can share how can I use > Apache > as a front end to Tomcat. I guess most installations of Apache and Tomcat are using the AJP protocol for communication between the Apache frontend and Tomcat backend. There are two similar approaches with two different Apache modules: mod_jk or the newer mod_proxy_ajp module. I've used mod_proxy_ajp for a few installations recently and it works without problems. Another advantage is that it's part of the Apache 2.2 standard modules. For both solutions you basically have to tell Apache which URLs or URL patterns it should forward to your Tomcat backend for processing of these requests. I think you'll find enough tutorials and examples on the intenert. Maybe there are comletely different approaches too, but in my opinion mod_proxy_ajp is really straight forward and not too hard to configure. Marco - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
APR & Tomcat...
Hi All, I have been having odd issues with APR & Tomcat (6.0.20) since I set it up a while ago. I am seeing: 1. Sometimes on the first try to get images from a page where the images are assigned a sub domain via a host tag I get a red x. Hitting refresh seems to retrieve the images. The images are in a subfolder off of the ROOT folder of tomcat. 2. I get a file not found off of another folder where the file is a jnlp file. So is there any type of directory tag (allow, deny ect) I should be using for the sub folders off or ROOT? When I used Apache Web server I set those up but then I was not using a Host tag either. But for APR I did not set up any type directory tags. If I need the directory tags where would I put them? Thanks, -Tony - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat7 HTTPS APR Performance
Christopher Schultz-2 wrote: > > > Can you clarify? Are you using the same version of APR with both Tomcat > 7 and JBoss? APR 2.1.4 is an unlikely version number. Care to > double-check? > Correction : It is jboss web server version 2.1.4 used. APR Version used is the latest available 1.4.2 Both Jboss Web Server and Tomcat7 are enabled with APR and using JDK6. >> While doing load testing with HP Load Runner we observed the following >> response times(seconds) for 100 concurrent users: >> Tomcat7 JbossWebServer-2.1.4Jboss4.2.3 >> >> Login 94.63 38.74 63.826 > > > Wow... login takes 30 second under the best of conditions? That seems... > long. Or, is this the total time to serve 100 requests all at once? > It is the average response time of the application when under a load of 100 concurrent users. For login - authentication is being done from LDAP Server. > Uhh... there could be many reasons that your webapp runs slowly. > I would recheck the performance stats with 100 users with HTTP protocol instead of HTTPS and revert back. Mladen Turk has mentioned that only constant response time (and not allowing the factors that make it vary like access to external resources) - can determine the absolute picture of the container behavior. I agree on that point - however as you can see the differences are huge - specifically the average response time wrt op like login to application. Login involves a simple ldap bind and the test case involves only login with correct pwd. > http://tomcat.apache.org/tomcat-7.0-doc/config/filter.html#Request_Dumper_Filter > Note that you will configure this component in web.xml, now, and not in > context.xml. > Chris, thanks for this info!. Shivani -- View this message in context: http://old.nabble.com/Tomcat7-HTTPS-APR-Performance-tp29180708p29207557.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: SEVERE message from DeltaManager
On 16/07/2010 10:19, Mark Thomas wrote: > On 16/07/2010 06:49, Matt Peterson wrote: >> While load testing our clustered Tomcats, we are seeing the following >> stack >> trace in our catalina.out occasionally, but not regularly: >> >> >> >> Jul 16, 2010 3:34:49 PM org.apache.catalina.ha.session.DeltaManager >> messageReceived >> >> SEVERE: Manager [localhost#/urs]: Unable to receive message through TCP >> channel >> >> java.lang.IllegalStateException: removeAttribute: Session already >> invalidated > > > >> Under what conditions would this occur? Could it be that a session >> diff is >> being transmitted, but the session it relates to has been invalidated >> by the >> time the diff is processed (via a user logout for example)? Or could >> it be >> that a timeout has been reached??? > > Someone at $work has been doing a load test with tc Server (which has > identical code to Tomcat in this area) and seen the same issue. I know > it isn't due to timeout since the sessions are only a few seconds old > when it happens. My current guess is that the messages are not being > processed in the same order as they are sent. I need to dig into this > more to figure out if this is a configuration issue or a bug. > > I did wonder if switching to channel send options 6 would fix it. I'll > get them to try that and see. Matt, Testing shows that it is caused by using async session replication. If you use synchronous replication that ensures messages are processed on the receiving nodes in the order they are sent. Asynchronous replication in conjunction with the fact the the receiving node uses a thread pool to process messages means that it is possible for messages to be processed out of sequence. If a session invalidate is processed before and update then you'll see this error. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: SEVERE message from DeltaManager
On 19/07/2010 10:50, Luciano Fioriti wrote: > May be, but i do notthink so. Again, you are way off-base here. Hitting the max threads in the connector has nothing to do with errors in session replication. Mark > > This errors : > "SEVERE: Manager [localhost#/urs]: Unable to receive message through TCP > channel > > java.lang. > IllegalStateException: removeAttribute: Session already > invalidated" > > may dependds on tomcat failure > and i see in the Receiver configuration: > > maxThreads="6"/> > > > 2010/7/16 Mark Thomas > >> On 16/07/2010 14:50, Luciano Fioriti wrote: >> >>> I had done a stress test with 20 contemporary request to a web app using >>> tomcat6 6bit. >>> When maxThreads=200 tomcat gave response to only some request then went >>> to >>> 0 cpu time >>> no more response, nothing on log file. >>> This happenend only on contemporary requests (max threads reched i >>> presume). >>> Increasing maxThreads to 250 all request were satisfied. >>> >> >> Which has absolutely nothing to do with the error Matt is reporting. >> >> There are various things that look odd in the statements above but this >> thread isn't the place to go into that. >> >> Mark >> >> >> >>> Lucio >>> >>> 2010/7/16 Mark Thomas >>> >>> On 16/07/2010 14:19, Luciano Fioriti wrote: It may be caused by maxThreads parameter in http connector, try to > increase > > On what basis are you reaching that conclusion? Mark lucio > > 2010/7/16 Mark Thomas > > On 16/07/2010 06:49, Matt Peterson wrote: > >> >> While load testing our clustered Tomcats, we are seeing the following >> >>> stack >>> trace in our catalina.out occasionally, but not regularly: >>> >>> >>> >>> Jul 16, 2010 3:34:49 PM org.apache.catalina.ha.session.DeltaManager >>> messageReceived >>> >>> SEVERE: Manager [localhost#/urs]: Unable to receive message through >>> TCP >>> channel >>> >>> java.lang.IllegalStateException: removeAttribute: Session already >>> invalidated >>> >>> >>> >> >> >> Under what conditions would this occur? Could it be that a session >> diff >> is >> >> being transmitted, but the session it relates to has been invalidated >>> by >>> the >>> time the diff is processed (via a user logout for example)? Or could >>> it >>> be >>> that a timeout has been reached??? >>> >>> >>> Someone at $work has been doing a load test with tc Server (which has >> identical code to Tomcat in this area) and seen the same issue. I know >> it >> isn't due to timeout since the sessions are only a few seconds old when >> it >> happens. My current guess is that the messages are not being processed >> in >> the same order as they are sent. I need to dig into this more to figure >> out >> if this is a configuration issue or a bug. >> >> I did wonder if switching to channel send options 6 would fix it. I'll >> get >> them to try that and see. >> >> Mark >> >> >> >> >> - >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> >> >> >> > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org >>> >> >> >> >> - >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> >> > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: tomcat starting even after port is in use
On 19/07/2010 08:35, sudhir singh rana wrote: > Hi, > > I started tomcat but tomcat port was in use. Due to this some functionality > of my program was not working. Tomcat gives the error when port is in use > but it comes up. I want tomcat should not come up when port is in use. > > Can anyone help me Yes, but only when you provide some basic information such as exactly which Tomcat version you are using. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: tomcat 7: IllegalArgumentException: taglib definition not consistent with specification version
On 19/07/2010 08:02, Edoardo Panfili wrote: > On 17/07/10 16.28, Mark Thomas wrote: >> >> >> ... >> >> >> > but this one works! also with the wrong schemaLocation. >>> > Without your help I can't figure the meaning of the exception. Is >>> Tomcat >>> > supposing a specification version using the presence/absence of >>> this tag? >>> > thank you. >> No. Tomcat 7 is requiring that if you declare your web application to be >> using version 2.5 of the Servlet specification that you declare your tag >> libraries as required by schema for that version of the spec. You were >> trying to use an old way old defining tag libraries from an older (2.3?) >> version of the spec. > > Ok, I am declaring the use of a specific version of the specification > and then I use (my mistake obviously!) an older schema in my web.xml... > Is a SAX exception more appropriate during the parsing of web.xml? If you enabled validation, you'd probably get one. > JSR site is the only place to find this kind of informations? Is there a > place where I can find the different characteristics (and schemas) of > the different sevlet/jsp/taglibs specification? Not that I am aware of. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Tomcat 5.5.23 server startup issue
*Hi All, I am facing the below mentioned issues in the server startup. hence the server is not starting up. Can any one plz help me how to resolve these issues. * Jul 19, 2010 9:41:30 PM org.apache.catalina.startup.HostConfig deployDescriptor SEVERE: Error deploying configuration descriptor host-manager.xml java.lang.NoSuchMethodError: org.apache.naming.NamingContextBindingsEnumeration.(Ljava/util/Iterator;Ljavax/naming/Context;)V at org.apache.naming.resources.FileDirContext.listBindings(FileDirContext.java:338) at org.apache.naming.resources.ProxyDirContext.listBindings(ProxyDirContext.java:516) at org.apache.catalina.util.ExtensionValidator.validateApplication(ExtensionValidator.java:175) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4064) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:626) at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:553) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022) at org.apache.catalina.core.StandardHost.start(StandardHost.java:736) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:448) at org.apache.catalina.core.StandardServer.start(StandardServer.java:700) at org.apache.catalina.startup.Catalina.start(Catalina.java:552) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433) Jul 19, 2010 9:41:30 PM org.apache.catalina.startup.HostConfig deployDescriptor SEVERE: Error deploying configuration descriptor manager.xml java.lang.NoSuchMethodError: org.apache.naming.NamingContextBindingsEnumeration.(Ljava/util/Iterator;Ljavax/naming/Context;)V at org.apache.naming.resources.FileDirContext.listBindings(FileDirContext.java:338) at org.apache.naming.resources.ProxyDirContext.listBindings(ProxyDirContext.java:516) at org.apache.catalina.util.ExtensionValidator.validateApplication(ExtensionValidator.java:175) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4064) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:626) at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:553) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022) at org.apache.catalina.core.StandardHost.start(StandardHost.java:736) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:448) at org.apache.catalina.core.StandardServer.start(StandardServer.java:700) at org.apache.catalina.startup.Catalina.start(Catalina.java:552) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433) -- Regards, Venkat
Re: where to declare the datasource?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Daniel, On 7/19/2010 11:19 AM, Daniel Plappert wrote: > It is possible to declare the datasource in the servlet.xml and > reference it in the web.xml of the application (via jndi)[?] Assuming you meant "server.xml", then yes, you can define it globally and reference it locally. Look under the configuration reference for your Tomcat version for "Global Resources" a.k.a. . > Or one can declare it in the application itself, i.e. in > application-context.xml. The first one declares the datasource for > all applications deployed in this servlet-container, the second one > is only for the application. Right. > Is there a good reason for declaring the datasource in servlet.xml, > other than to "share" the datasource with multiple applications? I can think of several reasons you might want to do this, including but not limited to any of the following: 1. There really is a database that should be shared by a number of different applications, and they should all use the same pool of connections 2. The developers have no idea about the data source connection details, and expect the server admins to provide the configuration #2 isn't really a good reason to do this, though: the server admins can always provide or override a webapp-provided context.xml file in order to include the correct configuration. This allows you to change the configuration without starting the entire server: only a webapp restart/redeploy is necessary. > Shouldn't every application have their own datasource? That depends entirely on your own requirements. > Which type of declaration do you prefer? I would recommend per-webapp configuration, but sometimes it makes sense to share a connection pool across many webapps. Again, it depends entirely upon your own requirements. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxEdocACgkQ9CaO5/Lv0PDOSQCfcNKLkXM+F/IkEgkXa7aWDwxH zlAAoLFCl9AJ0YEheFotb+mfC7ZZV6Za =xB3n -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
where to declare the datasource?
Hi! It is possible to declare the datasource in the servlet.xml and reference it in the web.xml of the application (via jndi). Or one can declare it in the application itself, i.e. in application-context.xml. The first one declares the datasource for all applications deployed in this servlet-container, the second one is only for the application. Is there a good reason for declaring the datasource in servlet.xml, other than to "share" the datasource with multiple applications? Shouldn't every application have their own datasource? Which type of declaration do you prefer? Greetings, Daniel - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: How can i verify clusterization?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Luca, On 7/19/2010 3:07 AM, Luca Gervasi wrote: > I use httpd + mod_jk as frontend to load balance among all the backends > (lb worker). Okay, that will simplify switching backends at will from a client. > The backends use the BackupManager to achieve clusterization enclosed > in the tag. Ok. Have you tried DeltaManager (the default)? >> Also, make sure that you have logging.properties set up in a sane way, >> and that you can get debugging output from at least one component. > > I don't have a logging.properties file. All the settings are "default". Those two statements are not compatible: Tomcat ships with a conf/logging.properties file. Have you disabled it? At the very least, you ought to be able to force your way into a backend server with a URL like this: http://host/context;jsessionid=ABCDEF.node1 (where "node1" is your jvmRoute set in your mod_jk configuration and in your on the backend). Once you've created a session on one node and stuffed some interesting things into it, then switch nodes by changing your URL: http://host/context;jsessionid=ABCDEF.node2 If your session still works, then the cluster is working. If your session isn't there, or the expected attributes are not present, they there is either a misconfiguration or some kind of connectivity issue. Speaking of configuration, would you care to post your cluster configuration? - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxEWnoACgkQ9CaO5/Lv0PCorQCfcETrdSZ9acf4nkrSWqeDR4dY miEAnjMDhhoIG7csHu0xQKTm8Q06eQsj =ggnZ -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: SEVERE message from DeltaManager
May be, but i do notthink so. This errors : "SEVERE: Manager [localhost#/urs]: Unable to receive message through TCP channel java.lang. IllegalStateException: removeAttribute: Session already invalidated" may dependds on tomcat failure and i see in the Receiver configuration: 2010/7/16 Mark Thomas > On 16/07/2010 14:50, Luciano Fioriti wrote: > >> I had done a stress test with 20 contemporary request to a web app using >> tomcat6 6bit. >> When maxThreads=200 tomcat gave response to only some request then went >> to >> 0 cpu time >> no more response, nothing on log file. >> This happenend only on contemporary requests (max threads reched i >> presume). >> Increasing maxThreads to 250 all request were satisfied. >> > > Which has absolutely nothing to do with the error Matt is reporting. > > There are various things that look odd in the statements above but this > thread isn't the place to go into that. > > Mark > > > >> Lucio >> >> 2010/7/16 Mark Thomas >> >> On 16/07/2010 14:19, Luciano Fioriti wrote: >>> >>> It may be caused by maxThreads parameter in http connector, try to increase >>> On what basis are you reaching that conclusion? >>> >>> Mark >>> >>> >>> >>> >>> lucio 2010/7/16 Mark Thomas On 16/07/2010 06:49, Matt Peterson wrote: > > While load testing our clustered Tomcats, we are seeing the following > >> stack >> trace in our catalina.out occasionally, but not regularly: >> >> >> >> Jul 16, 2010 3:34:49 PM org.apache.catalina.ha.session.DeltaManager >> messageReceived >> >> SEVERE: Manager [localhost#/urs]: Unable to receive message through >> TCP >> channel >> >> java.lang.IllegalStateException: removeAttribute: Session already >> invalidated >> >> >> > > > Under what conditions would this occur? Could it be that a session > diff > is > > being transmitted, but the session it relates to has been invalidated >> by >> the >> time the diff is processed (via a user logout for example)? Or could >> it >> be >> that a timeout has been reached??? >> >> >> Someone at $work has been doing a load test with tc Server (which has > identical code to Tomcat in this area) and seen the same issue. I know > it > isn't due to timeout since the sessions are only a few seconds old when > it > happens. My current guess is that the messages are not being processed > in > the same order as they are sent. I need to dig into this more to figure > out > if this is a configuration issue or a bug. > > I did wonder if switching to channel send options 6 would fix it. I'll > get > them to try that and see. > > Mark > > > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > >>> >>> >>> - >>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>> For additional commands, e-mail: users-h...@tomcat.apache.org >>> >>> >>> >> > > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
tomcat starting even after port is in use
Hi, I started tomcat but tomcat port was in use. Due to this some functionality of my program was not working. Tomcat gives the error when port is in use but it comes up. I want tomcat should not come up when port is in use. Can anyone help me thanks in advance
Re: How can i verify clusterization?
On Fri, 2010-07-16 at 15:56 -0400, Christopher Schultz wrote:
> Luca,
>
> On 7/14/2010 2:42 AM, Luca Gervasi wrote:
> > i'm using (mostly):
>
> What does "(mostly)" mean? You have environments that sometimes deviate
> from this configuration? Sometimes you use another Tomcat and/or JDK
> just for fun?
With "mostly" i mean i handle several cluster rangeing from 5.x to
6.0.28. I'm interested in the 6.0.x trunk cluster capabilities and
handling (since are the one that i handle on my own).
> > Tomcat: 2.0.26
>
> No, you're not. Maybe 6.0.26?
Yes, my bad :) Tomcat 6.0.26.
> JDK: jdk1.6.0_18
>
> Ok.
>
> > I have clusters of 2-4 tomcats. Is there a way to verify that the
> > cluster is working?
>
> What do you define as a "cluster"? Are you just load-balancing between
> machines that aren't tied to each other in any way? Are you attempting
> to use distributable sessions?
> What component is "clusterizing" these machines? Do you have an lb out
> front, or Apache httpd + mod_jk/mod_proxy? These details are useful in
> helping you.
I use httpd + mod_jk as frontend to load balance among all the backends
(lb worker). The backends use the BackupManager to achieve
clusterization enclosed in the tag.
> > I can see no message exchange. is there a way (even
> > some jsp code) to ensure that the cluster is working and the number of
> > nodes joining it?
>
> You may be able to verify that sessions are being distributed properly
> by modifying your own JSESSIONID cookie (or simply running with cookies
> disabled and then manually changing the 'jsessionid' parameter in the
> URL in order to force connection to a particular backend. Again, this
> depends entirely upon your lb strategy (which we don't know).
>
> > Furthermore...is there some debugging tool to see the cluster status?
>
> Logs certainly help. How about providing your startup log from catalina.out?
My Logs are strange. After a (successfull?) startup, i start getting some
errors that seems indicating a bad
clustering behavior:
[ Successfull startup? This ip is other node's - this is a two nodes
cluster ]
Jul 19, 2010 8:48:41 AM org.apache.catalina.ha.tcp.SimpleTcpCluster memberAdded
INFO: Replication member
added:org.apache.catalina.tribes.membership.MemberImpl[tcp://{172, 16, 35,
3}:8830,{172, 16, 35, 3},8830, alive=1040,id={55 -95 -24 -5 -91 -45 65 79 -93
18 68 -18 -30 84 -96 76 }, payload={}, command={}, domain={}, ]
[ Strange errors ]
Jul 19, 2010 8:47:33 AM org.apache.catalina.tribes.tipis.AbstractReplicatedMap
heartbeat
SEVERE: Unable to send AbstractReplicatedMap.ping message
org.apache.catalina.tribes.ChannelException: Sender not connected.; No faulty
members identified.
at
org.apache.catalina.tribes.transport.nio.PooledParallelSender.sendMessage(PooledParallelSender.java:45)
at
org.apache.catalina.tribes.transport.ReplicationTransmitter.sendMessage(ReplicationTransmitter.java:81)
at
org.apache.catalina.tribes.group.ChannelCoordinator.sendMessage(ChannelCoordinator.java:78)
at
org.apache.catalina.tribes.group.ChannelInterceptorBase.sendMessage(ChannelInterceptorBase.java:75)
at
org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor.sendMessage(ThroughputInterceptor.java:61)
at
org.apache.catalina.tribes.group.ChannelInterceptorBase.sendMessage(ChannelInterceptorBase.java:75)
at
org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor.sendMessage(MessageDispatchInterceptor.java:73)
at
org.apache.catalina.tribes.group.ChannelInterceptorBase.sendMessage(ChannelInterceptorBase.java:75)
at
org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.sendMessage(TcpFailureDetector.java:87)
at
org.apache.catalina.tribes.group.ChannelInterceptorBase.sendMessage(ChannelInterceptorBase.java:75)
at
org.apache.catalina.tribes.group.GroupChannel.send(GroupChannel.java:216)
at
org.apache.catalina.tribes.group.GroupChannel.send(GroupChannel.java:175)
at org.apache.catalina.tribes.group.RpcChannel.send(RpcChannel.java:89)
at
org.apache.catalina.tribes.tipis.AbstractReplicatedMap.ping(AbstractReplicatedMap.java:253)
at
org.apache.catalina.tribes.tipis.AbstractReplicatedMap.heartbeat(AbstractReplicatedMap.java:794)
at
org.apache.catalina.tribes.group.GroupChannel.heartbeat(GroupChannel.java:158)
at
org.apache.catalina.tribes.group.GroupChannel$HeartbeatThread.run(GroupChannel.java:661)
All this continues to be outputted unless i restart my nodes some _random_
times (I keep each istance down at least 1 hearthbeat long).
That's why i need to know if they are really "clustering". Is the errors
suppressed because they "works" or
because they "ultimately decided not to work at all" and just gave up?
> Also, make sure that you have logging.properties set up in a sane way,
> and that you can get debugging output from at least one component.
I don't
Re: tomcat 7: IllegalArgumentException: taglib definition not consistent with specification version
On 17/07/10 16.28, Mark Thomas wrote: >> >> >> ... >> >> > but this one works! also with the wrong schemaLocation. > Without your help I can't figure the meaning of the exception. Is Tomcat > supposing a specification version using the presence/absence of this tag? > thank you. No. Tomcat 7 is requiring that if you declare your web application to be using version 2.5 of the Servlet specification that you declare your tag libraries as required by schema for that version of the spec. You were trying to use an old way old defining tag libraries from an older (2.3?) version of the spec. Ok, I am declaring the use of a specific version of the specification and then I use (my mistake obviously!) an older schema in my web.xml... Is a SAX exception more appropriate during the parsing of web.xml? JSR site is the only place to find this kind of informations? Is there a place where I can find the different characteristics (and schemas) of the different sevlet/jsp/taglibs specification? Thank you again Edoardo - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
