Hi, We're looking into the parallel deployment feature of Tomcat 7 and want to see if there is a way to monitor performance stats of an old deployment of a webapp.
Our webapp has a few pages that display application-specific information - performance indicators, recent exceptions, cache information - and when the new version of a webapp is deployed, we still want to be able to monitor this info for the old webapp (eg, be able to view the monitoring info for both foo##001.war [old] and foo##002.war [new]) >From the testing we've done, it looks like the only way to be able to view a page in the older app after the new app is deployed is if we already have a session open on the old one. The admin interface is actually a set of iframes, with each iframe viewing a specified page on each of the machines in the cluster. The problem is if the browser crashes or is accidentally closed. Would using JMX allow us to view this information for the two webapp versions without being dependent on user sessions? How would we distinguish between status info coming from the old and new webapp versions? We haven't had experience using this before, so we're not too clear on what it allows us to do and what it entails. Yes, it sorta begs the question as to why we need to monitor an app that is being replaced anyway, and no longer accessible once existing sessions are closed. Anyway, we'd still like to know. =) In any case if it ends up being too much work then we'll just go with the first option. thanks, Ellecer --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
