-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Bill,
On 11/5/2010 7:51 AM, Bill Wang wrote: > I am searching the tool (or script) to be used for my tomcat env, that it > can keep running as daemon in background, detect the tomcat services > (several versions of tomcat). If it found the services don't run, or have > failure, it will start it again automatically. I don't run it myself so I'm not entirely sure of the details, but I believe that jsvc has the capability of detecting a JVM crash and restarting everything. There are situations where Tomcat might be considered "down" and yet the JVM is completely healthy: these scenarios are not detectable by jsvc, so you'll need an additional check as well. Modern JVMs have switches that allow you to run external commands under certain conditions (OOME... are there others?) -- you could use that as part of your strategy. > I think I can put the script in cronjob, and run every 5 minutes, or by > other way, please recommend. We do this in production in two ways: - - health check ping against a dynamic resource; if it succeeds, the server is up. we also report certain information that may predict a future problem (memory conditions, db pool stats, etc.) - - watching catalina.out; if we see something awful, we start ringing phones. we could auto-restart, but that's not desirable in our environment. Hope that helps, - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkzUHqoACgkQ9CaO5/Lv0PAB4ACdG58Mi3ItAvwYOdAfdd1zUctP 4JwAmwb/HZPA9D5rJ0mUjx4v/rlleOEv =LSsV -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
