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Does Tomcat server support Graceful Shutdown? [CLOSED]

+1 vote
1,625 views

Does Tomcat server support Graceful Shutdown (like all other App Servers: Weblogic, Websphere), where new requests are rejected, and the server finishes in-flight work on existing requests?

Something like the apachectl -k graceful, but instead to restart to stop the server.

closed with the note: No more action required, as problem now seems to be solved.
posted Jul 30, 2014 by Sridharan

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What you describe is the default behaviour although Tomcat only waits a relatively short time (10s ?) for in-flight requests to complete.
This behavior exists using the regular shutdown.sh script? Is the timeout (10s) configurable?
This behavior exists using the regular shutdown.sh script?
Yes.

Is the timeout (10s) configurable?
Yes.
./$CATALINA_HOME/bin/catalina.sh stop 30

(30 sec. wait)

Don't remember same option inside shutdown.sh, but anyway - it call  catalina.sh with stop option.
catalina.sh stop 30 will only wait 30 seconds to check to see if the process stopped: it will not force a shutdown.

Under default setup, Tomcat will only perform a graceful shutdown. That is, no explicit process termination will occur. A SHUTDOWN command is sent to the server which will pause the connectors (so they will not accept new connections) but any in-progress connections will complete, the thread pool(s) will drain, etc.

If you use:

$ CATALINA_PID=/tmp/tomcat.pid bin/catalina.sh stop 30 -force

... then catalina.sh will wait 30 seconds and then try to kill the JVM using "kill -9" once per second for 5 seconds until the process is dead or the 5 tries don't work.

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