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From Christopher Schultz <ch...@christopherschultz.net>
Subject Re: Any tools to detect tomcat services failure, and start it again automatically?
Date Thu, 11 Nov 2010 17:17:55 GMT
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Pid,

On 11/11/2010 3:40 AM, Pid wrote:
> You could set CATALINA_PID and check that the process ID* contained in
> the file is active.

That is one way of doing things, but Tomcat might not be "healthy" even
though the process is running. For instance, I can imagine the following
scenarios where the process would be running, but not considered "healthy":

1. Database connection pool is exhausted - possibly permanently
2. Request processing thread pool is exhausted - possibly permanently
3. JVM has experienced an OOME and parts of Tomcat may be unstable

That last one is very difficult to detect. ;)

In these cases, a Tomcat bounce might be the best action to take.

- -chris
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