-Tim
Simon Zeng wrote:
I can come up with a WatchDog to do the monitoring/restart. But We have a few tomcat instance runing in load balance mode with one Apache dispatching request to them. How could we figure out if one/more(not all) tomcat instances down and how to decide which ones they are? Basically the question is can we bypass Apache to go directly to Tomcat since we know where they are?
Thanks, -Simon
-----Original Message----- From: QM [mailto:[EMAIL PROTECTED] Sent: Tuesday, May 18, 2004 4:40 PM To: Tomcat Users List Subject: Re: How to detect tomcat down
On Tue, May 18, 2004 at 03:04:28PM -0400, Simon Zeng wrote:
: I am running Apache 2.0.47 and Tomcat 4.1.24 on Win2K/NT. I would like to
: monitor the tomcat : server and restart it automatically if it is detected down. I did a lot
: research but could not find any convincing way to do it.
Some commercial monitoring products perform a request to an (unprotected) URI and, in the event of a failure, perform some specified action. -that is, call the start script.
Otherwise, you could have Tomcat started by a (custom) watchdog, the idea being that it kicks the start script if the expected process isn't running. I recall iPlanet 4 did something similar.
As for free + out-of-the-box solutions, I haven't seen any...
-QM
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