https://issues.apache.org/bugzilla/show_bug.cgi?id=49728
Summary: catalina.sh PID file handling not working if started
by initscript
Product: Tomcat 6
Version: 6.0.29
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
AssignedTo: dev@tomcat.apache.org
ReportedBy: p...@bieringer.de
the PID file handling was changed in 6.0.24 in catalina.sh, which avoid the use
of an initscript to start tomcat proper (e.g. on CentOS/RHEL5). catalina.sh is
currently too strict regarding existing PID file and has imho a too lightweight
check.
Below is a patch which improves the PID file handling.
It fixes 2 issues.
Issue 1: tomcat won't start, if initscript has already created as root a PID
file and changed permissions, that user tomcat would able to write it's PID
into this file.
Fix: check existing PID file whether it's non-empty and if yes, check, whether
PID is stale
Issue 2: catalina.sh unconditionally tries to remove the given PID file, not
testing the case that it has no write access to the directory (e.g. /var/run).
Fix: check before removing a PID file (because this needs write access to pid
file directory, which is e.g. /var/run, were user tomcat has no write access)
Pls. include this fix into upstream, thank you.
Peter
--- catalina.sh 2010-07-19 12:59:45.000000000 +0000
+++ catalina.sh 2010-08-09 13:00:56.000000000 +0000
@@ -311,9 +311,15 @@
elif [ "$1" = "start" ] ; then
if [ ! -z "$CATALINA_PID" ]; then
- if [ -f "$CATALINA_PID" ]; then
- echo "PID file ($CATALINA_PID) found. Is Tomcat still running? Start
aborted."
- exit 1
+ if [ -f "$CATALINA_PID" -a -s "$CATALINA_PID" ]; then
+ echo "Non-empty PID file ($CATALINA_PID) found. Is Tomcat still
running?"
+ pid="`cat "$CATALINA_PID"`"
+ if ps -p $pid >/dev/null; then
+ echo "Tomcat is probably still running with PID $pid! Start aborted."
+ exit 1
+ else
+ echo "Tomcat is no longer running (stale PID file)."
+ fi
fi
fi
@@ -393,7 +399,11 @@
while [ $SLEEP -ge 0 ]; do
kill -0 `cat $CATALINA_PID` >/dev/null 2>&1
if [ $? -gt 0 ]; then
- rm $CATALINA_PID
+ if [ -w `dirname "$CATALINA_PID"` ]; then
+ rm $CATALINA_PID
+ else
+ echo "Non-removable PID file found ($CATALINA_PID)."
+ fi
break
fi
if [ $SLEEP -gt 0 ]; then
@@ -416,7 +426,11 @@
if [ -f "$CATALINA_PID" ]; then
echo "Killing: `cat $CATALINA_PID`"
kill -9 `cat $CATALINA_PID`
- rm $CATALINA_PID
+ if [ -w `dirname "$CATALINA_PID"` ]; then
+ rm $CATALINA_PID
+ else
+ echo "Non-removable PID file found ($CATALINA_PID)."
+ fi
fi
fi
fi
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