Hi list, I have a fully working mod_jk High-Availability Tomcat environment at the moment, and I'm looking to start catching web-app failures, as well as Tomcat server failures.
At the moment, the service looks like this: Two Alteon hardware load balancers feeding Two mod_jk apache servers feeding Four Tomcat 5.5 servers I have at least six applications running on each identical Tomcat instance, with the incoming connections balanced equally between the four Tomcat servers. The config is set up like this. worker.list=app1,app2,app3,app4,app5 worker.tomcat1.port=8009 ... worker.tomcat2.port=8009 ... worker.tomcat3.port=8009 ... worker.tomcat4.port=8009 worker.app1.type=lb worker.app1.balance_workers=tomcat1,tomcat2,tomcat3,tomcat4 worker.app2.type=lb worker.app2.balance_workers=tomcat1,tomcat2,tomcat3,tomcat4 etc. The applications themselves will return a 500-error if they encounter an internal failure. I want to be able to detect this, and redirect around the failing application instance. I'm aware I can do this for the tomcat server worker, but using the fail_on_status directive will take an entire server out of the cluster. Using fail_on_status , there's a possibility that one misbehaving web-app can destroy the whole environment! Is there a way I can use mod_jk to redirect around a failed application only, instead of taking out an entire server? Or am I misinterpreting something? I think this is possible if I create an AJP worker for each web-app on each server - but that config will be ridiculously complex, and I'll likely have problems with jvmRoute variables, and such. Any ideas? thanks James Masson ********************************************************************** Confidentiality : This e-mail and any attachments are intended for the addressee only and may be confidential. If they come to you in error you must take no action based on them, nor must you copy or show them to anyone. Please advise the sender by replying to this e-mail immediately and then delete the original from your computer. Opinion : Any opinions expressed in this e-mail are entirely those of the author and unless specifically stated to the contrary, are not necessarily those of the authors employer. Security Warning : Internet e-mail is not necessarily a secure communications medium and can be subject to data corruption. We advise that you consider this fact when e-mailing us. Viruses : We have taken steps to ensure that this e-mail and any attachments are free from known viruses but in keeping with good computing practice, you should ensure that they are virus free. Inspired Gaming (UK) Limited Registered in England No 3565640 Registered Office 3 The Maltings Wetmore Road, Burton On Trent, Staffordshire DE14 1SE _______________________________________________________________ This message has been checked for all known viruses by the MessageLabs Virus Control Centre. --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
