Event Handlers, start a java program, nohup issues.

[Marco Tirado]

Hello Users:

I have a problem with an event handler of mine. The handler starts a java
daemon-like program which loops forever waiting for connections and performs
JMX queries against our java applications.

The problem is that the handler times out when it is run by nagios. This is
what I see in the logs:

[01-07-2009 18:45:36] SERVICE EVENT HANDLER:
bj-mon-01;JMX_Server_Running;(null);(null);(null);start_jmx_server
[01-07-2009 18:46:07] Warning: Service event handler command
'/usr/local/nagios/libexec/eventhandlers/start_jmx_server CRITICAL SOFT 1'
timed out after 30 seconds

The event handler should start my JMXServer both in hard and soft states. I
have run the command from the console as the "nagios" user and it works, so
the problem has nothing to do with user rights for nagios.

The problem is that the handler hangs when I run "nohup" followed by my
command for starting the server (see the red text below).

My event handler looks like this:

###########################
# PROPERTIES
###########################

PORT="4444"
ECHO_CMD="/bin/echo"
JAVA_CMD="/usr/bin/java"
CLASSPATH="MyClasspath"
JVM_OPTIONS="MyOptions"

###########################

# What state is the JMXServer in?
case "$1" in

OK)
        ;;

WARNING)
        ;;

UNKNOWN)
        ;;

CRITICAL)

        case "$2" in

        SOFT)

                `$ECHO_CMD "TRYING restart" >> /tmp/test`
                nohup $JAVA_CMD -cp $CLASSPATH $JVM_OPTIONS JMXServer $PORT
</dev/null 2>&1 >> $LOG_FILE&
                `$ECHO_CMD "TRYING restart" >> /tmp/test`

                ;;

        HARD)

                `$ECHO_CMD "TRYING restart" >> /tmp/test`
                nohup $JAVA_CMD -cp $CLASSPATH $JVM_OPTIONS JMXServer $PORT
</dev/null 2>&1 >> $LOG_FILE&
                `$ECHO_CMD "FINISHED trying" >> /tmp/test`

                ;;

        esac

        ;;

esac

exit 0



Any help, hint or recommendation is deeply appreciated.

//Marco
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://www.monitoring-lists.org/archive/users/attachments/20090702/a74472f2/attachment.html>
-------------- next part --------------
------------------------------------------------------------------------------
-------------- next part --------------
_______________________________________________
Nagios-users mailing list
Nagios-users at lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nagios-users
::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null