>> I'm using Tomcat 4.1.24 et i want after it fails it restarts
>> automatically to have a high availability.
> [Assuming Unix]
> Way 1 - Set $CATALINA_PID before staarting tomcat. Then have a cron
> job run occasasionally to look at the value in the file pointed at
> by $CATALINA_PID. If the process doesn't exist - start tomcat.
That's a good idea. Another option (also assuming unix, and the
willingness to do a little bit of shell scripting) would be to add a
wrapper around tomcat's scripts.
The general idea is
while true; do
# using "run" because it blocks
$CATALINA_HOME/bin/catalina.sh run
if really_shutting_down; then
# we're supposed to stop, so exit gracefully
exit 0
fi
done
"really_shutting_down" implies that you'd need a shutdown wrapper with
some provision for allowing the `loop' script to determine whether a
shutdown was accidental or intentional. You'd also want to have some
sort of check in place to prevent an infinite loop if tomcat was
started with a bad configuration file, or something of that nature.
There are probably other little details to work out, but that's the
basic idea.
--
Steve
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