From: Wakeman, Lindsay (Lindsay.Wakeman@bl.uk)
Date: Tue Aug 10 2004 - 11:43:10 EDT
I have done some pretty exhaustive - and exhausting - tesing on this
little issue and I think I will probably give up at this stage. Further
things that were suggested by people(see ACK list below) included:
- add 'sleep' after the init startup call
- trap HUP in the init script
- trap HUP in all of the startup scripts (startup.sh,
catalina.sh)
- check the environment settings during startup are as
should be
- check Apache startup is after tomcat - and after a delay
- check the shell is /bin/sh
- check the tomcat logs (always fails just before Coyote
server is started)
- check the symbolic links in /sbin/rc3.c etc.
- look at how HP Internet Express Apache is started for
comparison
- use the Java Service Wrapper (free)
I have tried all of those but the last two. (On the Apache side, although
we run Apache on this system, it is not for the benefit of tomcat. I took
the Apache startup out
altogether, to no avail.)
The relevant extract of the init script now looks like this:
<snip>
#!/bin/sh
trap 'echo tomcat_init >> /tmp/trap' 1
CATALINA_HOME=/web/tomcat
export CATALINA_HOME
JAVA_HOME=/usr/opt/java141
export JAVA_HOME
case "$1" in
'start')
echo "Starting Tomcat...."
su - tcmgr -c "nohup $CATALINA_HOME/bin/startup.sh >
/tmp/tomcat_start.log &"
sleep 30
;;
<snip>
I get the expected tomcat startup lines in /tmp/tomcat_start.log.
Nothing ever arrives in /tmp/trap, including using the same trap in the
tomcat scripts.
One interesting point I discovered is that whichever way I set up the init
script (either to run the startup as root, or to use 'su - application_user
-c' ) the net result is that it *always dumps core* when it terminates. This
is consistent with what happens if I start it manually after boot time, then
send it a HUP. So it suggests that a HUP is somehow getting through to the
final java invocation. Perhaps I need to get a later JVM version. Ah well.
Many thanks to : Narendra Raavi, Andy Wagg, Joachim Jaekel, Judith Reed Tom
Swigg, Joseph A. Senulis, John L.Lanier, Zoong Pham, Bevan Broun, and Oisin
McGuinness.
I do appreciate it.
Cheers for now
Lindsay
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