Hi Davor, if mod jk2 is an option I would suggest using that. It provides a couple of features that would help you achieving what you asked for. E.g. it supports graceful shutdown, i.e just redirecting already existing sessions with a valiud jvm route to one tomcat instance and sending all new requests to the other tomcat. Also in jk2 - if you don't care about loosing sessions - you can set one of the tomcats to be disabled making it unreachable for any requests. The good thing with jk2 is that it supports reloading of the conf file at runtime, i.e. without shuting anything down.
Hope this helps, Thomas -----Urspr�ngliche Nachricht----- Von: news [mailto:[EMAIL PROTECTED] Auftrag von Davor Cengija Gesendet: Freitag, 18. Juni 2004 09:47 An: [EMAIL PROTECTED] Betreff: Pulling a node out of a cluster? My server configuration is as follows: - Apache 2 + mod_jk 1.2.5 - Two Tomcats 4.1.30 which communicate with mod_jk through ports 11009 and 12009. It works just as it should; mod_jk automatically redirects all the requests from tomcat1 to tomcat2 when tomcat1 is down etc. Now, the question is how to pull e.g. tomcat1 out of a cluster but to have it still happily running? The best idea I could come to is to shut down a tomcat, change its mod_jk connector port and to bring it up again. Apache doesn't see that tomcat anymore and forwards all the requests to another one, and I can easily access that pulled-out tomcat through its http port. When I want to reconnect the pulled-out tomcat to cluster again I have to shut it down, change its mod_jk connector port back to its previous value and start it up again. It works but is a little bit touchy. Any better idea? I've seen a cluster configuration which uses special files, e.g. im_in_cluster.html which each clustered tomcat has in its web root. Load balancer first asks for that file and if it's available forwards request to that tomcat. Simply removing im_in_cluster.html file from a tomcat's webroot will render that tomcat unclustered. Any idea how could I achieve that with apache+mod_jk+two tomcats? Thanks, Davor -- Davor Cengija, [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
