Re: How to cluster two embedded tomcat 7 instances
Martin, thanks for the pointers. Though, I'd rather like to start with the default solution (i.e. something that works out of the box with the Tomcat deliverable) In the meanwhile, I brought the SimpleTcpCluster to work. I will report here soon with some code. Still, I would be *very* interested in knowing how to use the PersistentManager to realize session failover - if it is inteded to serve that purpose at all. Regards Rüdiger On Thu, Jun 9, 2011 at 16:16, Martin Grotzke martin.grot...@googlemail.com wrote: Hi, perhaps memcached-session-manager is an option for you: http://code.google.com/p/memcached-session-manager/ It has integration tests that show how to configure it programatically: https://github.com/magro/memcached-session-manager/blob/master/core/src/test/java/de/javakaffee/web/msm/integration/TestUtils.java#L440 Configuration options are described here: http://code.google.com/p/memcached-session-manager/wiki/SetupAndConfiguration Cheers, Martin On 06/09/2011 03:15 PM, Rüdiger Herrmann wrote: Hi all, I would like to programmatically set up two Tomcat engines and have them form a basic cluster - all in the same VM. Creating and starting the servlet engines already works Tomcat tomcat = new Tomcat() tomcat.setPort( 123 ); // create context, add servlet, ... tomcat.start(); What I am struggling with is setting up the cluster. My first attempt was to use the PersistentManager with Store that uses a shared directory. But it seems that it only persists session in time intervals. To enable failover, a session would need to be persisted after each request. However, I didn't find out how to configure or trigger the PersistentManager to do so. Still, the PersistenceManager setup was straightforward and if anyone knows how to form a cluster with this approach I would be grateful to know. I am aware of the SimpleTcpCluster, which I would try next. Just, before transforming the XML configuration into API calls (without known their meaning) I wanted to ask if there is an easier or even pre-built solution. Background: I work on enabling RAP [1], a web framework, to work in failover cluster environments. To ensure cluster-support, I have a set of JUnit tests that issue requests against an embeded cluster of servlet engines and then examine the state of sessions of the respective nodes, etc. Performance isn't important, neither is any advanced clustering feature (e.g. DeltaManager) needed. My focus is on finding a lightweight and purely programmatic solution. Thanks in advance, Rüdiger [1] http://eclipse.org/rap - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org -- Martin Grotzke http://twitter.com/martin_grotzke -- -- EclipseSource http://eclipsesource.com Tel: 0721 - 66 47 33 - 0 Fax: 0721 - 66 47 33 29 Innoopract Informationssysteme GmbH Stephanienstrasse 20, 76133 Karlsruhe, Germany General Manager: Jochen Krause Registered Office: Karlsruhe, Commercial Register Mannheim HRB 107883 - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: How to cluster two embedded tomcat 7 instances
Hi Rüdiger, On 06/10/2011 10:42 AM, Rüdiger Herrmann wrote: Still, I would be *very* interested in knowing how to use the PersistentManager to realize session failover - if it is inteded to serve that purpose at all. I remember there were people posting on this list that they're trying to achieve the same without success (I just cannot find the relevant threads in short time). You can search the mailing list for this (IIRC one case was related to realizing non-sticky sessions with persistent manager). Cheers, Martin signature.asc Description: OpenPGP digital signature
Re: How to cluster two embedded tomcat 7 instances
In case someone is interested, the code to programmatically set up a clustered Tomcat instance is attached. - Rüdiger On Fri, Jun 10, 2011 at 10:42, Rüdiger Herrmann rherrm...@eclipsesource.com wrote: Martin, thanks for the pointers. Though, I'd rather like to start with the default solution (i.e. something that works out of the box with the Tomcat deliverable) In the meanwhile, I brought the SimpleTcpCluster to work. I will report here soon with some code. Still, I would be *very* interested in knowing how to use the PersistentManager to realize session failover - if it is inteded to serve that purpose at all. Regards Rüdiger On Thu, Jun 9, 2011 at 16:16, Martin Grotzke martin.grot...@googlemail.com wrote: Hi, perhaps memcached-session-manager is an option for you: http://code.google.com/p/memcached-session-manager/ It has integration tests that show how to configure it programatically: https://github.com/magro/memcached-session-manager/blob/master/core/src/test/java/de/javakaffee/web/msm/integration/TestUtils.java#L440 Configuration options are described here: http://code.google.com/p/memcached-session-manager/wiki/SetupAndConfiguration Cheers, Martin On 06/09/2011 03:15 PM, Rüdiger Herrmann wrote: Hi all, I would like to programmatically set up two Tomcat engines and have them form a basic cluster - all in the same VM. Creating and starting the servlet engines already works Tomcat tomcat = new Tomcat() tomcat.setPort( 123 ); // create context, add servlet, ... tomcat.start(); What I am struggling with is setting up the cluster. My first attempt was to use the PersistentManager with Store that uses a shared directory. But it seems that it only persists session in time intervals. To enable failover, a session would need to be persisted after each request. However, I didn't find out how to configure or trigger the PersistentManager to do so. Still, the PersistenceManager setup was straightforward and if anyone knows how to form a cluster with this approach I would be grateful to know. I am aware of the SimpleTcpCluster, which I would try next. Just, before transforming the XML configuration into API calls (without known their meaning) I wanted to ask if there is an easier or even pre-built solution. Background: I work on enabling RAP [1], a web framework, to work in failover cluster environments. To ensure cluster-support, I have a set of JUnit tests that issue requests against an embeded cluster of servlet engines and then examine the state of sessions of the respective nodes, etc. Performance isn't important, neither is any advanced clustering feature (e.g. DeltaManager) needed. My focus is on finding a lightweight and purely programmatic solution. Thanks in advance, Rüdiger [1] http://eclipse.org/rap - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org -- Martin Grotzke http://twitter.com/martin_grotzke -- -- EclipseSource http://eclipsesource.com Tel: 0721 - 66 47 33 - 0 Fax: 0721 - 66 47 33 29 Innoopract Informationssysteme GmbH Stephanienstrasse 20, 76133 Karlsruhe, Germany General Manager: Jochen Krause Registered Office: Karlsruhe, Commercial Register Mannheim HRB 107883 -- -- EclipseSource http://eclipsesource.com Tel: 0721 - 66 47 33 - 0 Fax: 0721 - 66 47 33 29 Innoopract Informationssysteme GmbH Stephanienstrasse 20, 76133 Karlsruhe, Germany General Manager: Jochen Krause Registered Office: Karlsruhe, Commercial Register Mannheim HRB 107883 - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: How to cluster two embedded tomcat 7 instances
On 10/06/2011 21:23, Rüdiger Herrmann wrote: In case someone is interested, the code to programmatically set up a clustered Tomcat instance is attached.p The list strips attachments unfortunately. Try Pastebin/GitHub etc p signature.asc Description: OpenPGP digital signature
Re: How to cluster two embedded tomcat 7 instances
thanks for the hint. Here goes the link to the file: http://pastebin.com/6K4Ns4Tz - Rüdiger On Fri, Jun 10, 2011 at 22:35, Pid p...@pidster.com wrote: On 10/06/2011 21:23, Rüdiger Herrmann wrote: In case someone is interested, the code to programmatically set up a clustered Tomcat instance is attached.p The list strips attachments unfortunately. Try Pastebin/GitHub etc p -- -- EclipseSource http://eclipsesource.com Tel: 0721 - 66 47 33 - 0 Fax: 0721 - 66 47 33 29 Innoopract Informationssysteme GmbH Stephanienstrasse 20, 76133 Karlsruhe, Germany General Manager: Jochen Krause Registered Office: Karlsruhe, Commercial Register Mannheim HRB 107883 - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: How to cluster two embedded tomcat 7 instances
From: Rüdiger Herrmann [mailto:rherrm...@eclipsesource.com] Subject: Re: How to cluster two embedded tomcat 7 instances thanks for the hint. Here goes the link to the file: http://pastebin.com/6K4Ns4Tz Please consider adding this to the Tomcat Wiki as well. - 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: How to cluster two embedded tomcat 7 instances
Hi, perhaps memcached-session-manager is an option for you: http://code.google.com/p/memcached-session-manager/ It has integration tests that show how to configure it programatically: https://github.com/magro/memcached-session-manager/blob/master/core/src/test/java/de/javakaffee/web/msm/integration/TestUtils.java#L440 Configuration options are described here: http://code.google.com/p/memcached-session-manager/wiki/SetupAndConfiguration Cheers, Martin On 06/09/2011 03:15 PM, Rüdiger Herrmann wrote: Hi all, I would like to programmatically set up two Tomcat engines and have them form a basic cluster - all in the same VM. Creating and starting the servlet engines already works Tomcat tomcat = new Tomcat() tomcat.setPort( 123 ); // create context, add servlet, ... tomcat.start(); What I am struggling with is setting up the cluster. My first attempt was to use the PersistentManager with Store that uses a shared directory. But it seems that it only persists session in time intervals. To enable failover, a session would need to be persisted after each request. However, I didn't find out how to configure or trigger the PersistentManager to do so. Still, the PersistenceManager setup was straightforward and if anyone knows how to form a cluster with this approach I would be grateful to know. I am aware of the SimpleTcpCluster, which I would try next. Just, before transforming the XML configuration into API calls (without known their meaning) I wanted to ask if there is an easier or even pre-built solution. Background: I work on enabling RAP [1], a web framework, to work in failover cluster environments. To ensure cluster-support, I have a set of JUnit tests that issue requests against an embeded cluster of servlet engines and then examine the state of sessions of the respective nodes, etc. Performance isn't important, neither is any advanced clustering feature (e.g. DeltaManager) needed. My focus is on finding a lightweight and purely programmatic solution. Thanks in advance, Rüdiger [1] http://eclipse.org/rap - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org -- Martin Grotzke http://twitter.com/martin_grotzke signature.asc Description: OpenPGP digital signature
