cc-metric-collector/scripts/cc-metric-collector.init

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#! /usr/bin/env bash
# chkconfig: 2345 80 05
# description: ClusterCockpit metric collector
# processname: cc-metric-collector
# config: /etc/default/cc-metric-collector
# pidfile: /var/run/cc-metric-collector.pid
### BEGIN INIT INFO
# Provides: cc-metric-collector
# Required-Start: $all
# Required-Stop: $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Start ClusterCockpit metric collector at boot time
### END INIT INFO
PATH=/bin:/usr/bin:/sbin:/usr/sbin
NAME=cc-metric-collector
DESC="ClusterCockpit metric collector"
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DEFAULT=/etc/default/${NAME}
CC_USER=clustercockpit
CC_GROUP=clustercockpit
CONF_DIR=/etc/cc-metric-collector
PID_FILE=/var/run/$NAME.pid
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DAEMON=/usr/bin/$NAME
CONF_FILE=${CONF_DIR}/cc-metric-collector.json
umask 0027
if [ ! -x $DAEMON ]; then
echo "Program not installed or not executable"
exit 5
fi
. /lib/lsb/init-functions
if [ -r /etc/default/rcS ]; then
. /etc/default/rcS
fi
# overwrite settings from default file
if [ -f "$DEFAULT" ]; then
. "$DEFAULT"
fi
CC_OPTS="--config=${CONF_FILE}"
function checkUser() {
if [ `id -u` -ne 0 ]; then
echo "You need root privileges to run this script"
exit 4
fi
}
case "$1" in
start)
checkUser
log_daemon_msg "Starting $DESC"
pid=`pidofproc -p $PID_FILE $NAME`
if [ -n "$pid" ] ; then
log_begin_msg "Already running."
log_end_msg 0
exit 0
fi
# Prepare environment
touch "$PID_FILE" && chown "$CC_USER":"$CC_GROUP" "$PID_FILE"
if [ -n "$MAX_OPEN_FILES" ]; then
ulimit -n $MAX_OPEN_FILES
fi
# Start Daemon
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start-stop-daemon --start -b --chdir "$WORK_DIR" --user "$CC_USER" -c "$CC_USER" --pidfile "$PID_FILE" --exec $DAEMON -- $CC_OPTS
return=$?
if [ $return -eq 0 ]
then
sleep 1
# check if pid file has been written to
if ! [[ -s $PID_FILE ]]; then
log_end_msg 1
exit 1
fi
i=0
timeout=10
# Wait for the process to be properly started before exiting
until { cat "$PID_FILE" | xargs kill -0; } >/dev/null 2>&1
do
sleep 1
i=$(($i + 1))
if [ $i -gt $timeout ]; then
log_end_msg 1
exit 1
fi
done
fi
log_end_msg $return
;;
stop)
checkUser
log_daemon_msg "Stopping $DESC"
if [ -f "$PID_FILE" ]; then
start-stop-daemon --stop --pidfile "$PID_FILE" \
--user "$CC_USER" \
--retry=TERM/20/KILL/5 >/dev/null
if [ $? -eq 1 ]; then
log_progress_msg "$DESC is not running but pid file exists, cleaning up"
elif [ $? -eq 3 ]; then
PID="`cat $PID_FILE`"
log_failure_msg "Failed to stop $DESC (pid $PID)"
exit 1
fi
rm -f "$PID_FILE"
else
log_progress_msg "(not running)"
fi
log_end_msg 0
;;
status)
status_of_proc -p $PID_FILE $NAME $NAME && exit 0 || exit $?
;;
restart|force-reload)
if [ -f "$PID_FILE" ]; then
$0 stop
sleep 1
fi
$0 start
;;
*)
log_success_msg "Usage: $0 {start|stop|restart|force-reload|status}"
exit 3
;;
esac