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|
#!/bin/sh
# event script to manage httpd in a cluster environment
. $CTDB_BASE/functions
loadconfig ctdb
detect_init_style
case $CTDB_INIT_STYLE in
redhat)
CTDB_SERVICE_HTTP="httpd"
CTDB_CONFIG_HTTP="http"
;;
suse)
CTDB_SERVICE_HTTP="apache2"
CTDB_CONFIG_HTTP="apache2"
;;
ubuntu)
CTDB_SERVICE_HTTP="apache2"
CTDB_CONFIG_HTTP="apache2"
;;
*)
# should not happen.
# for now use red hat style as default
CTDB_SERVICE_HTTP="httpd"
CTDB_CONFIG_HTTP="http"
;;
esac
loadconfig "${CTDB_CONFIG_HTTP}"
[ "$CTDB_MANAGES_HTTPD" = "yes" ] || exit 0
cmd="$1"
shift
# RHEL5 sometimes use a SIGKILL to terminate httpd, which then leaks
# semaphores. This is a hack to clean them up.
cleanup_httpd_semaphore_leak() {
killall -q -0 "${CTDB_SERVICE_HTTP}" ||
for i in $(ipcs -s | awk '$3 == "apache" { print $2 }') ; do
ipcrm -s $i
done
}
case $cmd in
startup)
cleanup_httpd_semaphore_leak
service "${CTDB_SERVICE_HTTP}" start
;;
shutdown)
service "${CTDB_SERVICE_HTTP}" stop
killall -q -9 "${CTDB_SERVICE_HTTP}"
;;
monitor)
( ctdb_check_tcp_ports "http" 80 )
if [ $? -ne 0 ] ; then
echo "HTTPD is not running. Trying to restart HTTPD."
cleanup_httpd_semaphore_leak
service "${CTDB_SERVICE_HTTP}" start
exit 1
fi
;;
esac
exit 0
|
