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#!/bin/sh
# event script to manage httpd in a cluster environment
. $CTDB_BASE/functions
detect_init_style
case $CTDB_INIT_STYLE in
redhat)
service_name="httpd"
service_config="http"
;;
suse|debian|*)
service_name="apache2"
service_config="apache2"
;;
esac
# RHEL5 sometimes use a SIGKILL to terminate httpd, which then leaks
# semaphores. This is a hack to clean them up.
cleanup_httpd_semaphore_leak() {
killall -q -0 "$service_name" ||
for i in $(ipcs -s | awk '$3 == "apache" { print $2 }') ; do
ipcrm -s $i
done
}
##########
service_start="cleanup_httpd_semaphore_leak; service $service_name start"
service_stop="service $service_name stop; killall -q -9 $service_name || true"
service_reconfigure="service $service_name restart"
loadconfig
ctdb_start_stop_service
is_ctdb_managed_service || exit 0
case "$1" in
startup)
ctdb_service_start
;;
shutdown)
ctdb_service_stop
;;
monitor)
if ctdb_service_needs_reconfigure ; then
ctdb_service_reconfigure
exit 0
fi
if ctdb_check_tcp_ports 80 >/dev/null 2>/dev/null ; then
ctdb_counter_init
else
ctdb_counter_incr
ctdb_check_counter_equal 5 || {
echo "HTTPD is not running. Trying to restart HTTPD."
ctdb_service_stop
ctdb_service_start
exit 0
}
ctdb_check_counter_limit 10 quiet|| {
echo "HTTPD is not running. Trying to restart HTTPD."
ctdb_service_stop
ctdb_service_start
exit 1
}
fi
;;
*)
ctdb_standard_event_handler "$@"
;;
esac
exit 0
|
