Antonio Fiol Bonn�n said:
Hi,
I'd like to have our Tomcat servers monitored, in order to get an alarm if one of them stops responding.
But they are not using HTTP at all. We are using the Coyote AJP
connector because we have Apache in front of them, in a balanced
configuration.
If you cannot find an AJP client...
Why not have tomcat listen for http requests as well (on 8080 or some other port) (only accessible on your internal network), and have your monitor script call some URL (a monitor servlet you create) on the tomcat server to determine whether the tomcat server (and your web app) is up and running.
Either use the response code (including no response) and/or the response data/output to determine the state of the app server (and your application).
You can use wget or some http client to poll your server. This is how we
do it even though we front-end Tomcat using Apache as well. This works
great with Nagios...
I had thought of that, but if you hit maxProcessors on the AJP side, you won't detect that if you monitor the HTTP connector.
Antonio Fiol
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