Add init script and unit file for systemd

scripts/cc-metric-collector.init

@@ -0,0 +1,140 @@
+#! /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 $syslog
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: Start ClusterCockpit metric collector at boot time
+### END INIT INFO
+
+
+PATH=/bin:/usr/bin:/sbin:/usr/sbin
+NAME=cc-metric-collector
+DESC="ClusterCockpit metric collector"
+DEFAULT=/etc/default/${NAME}.json
+
+CC_USER=clustercockpit
+CC_GROUP=clustercockpit
+CONF_DIR=/etc/cc-metric-collector
+PID_FILE=/var/run/$NAME.pid
+DAEMON=/usr/sbin/$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 $MAX_OPEN_FILES
+	fi
+
+	# Start Daemon
+	start-stop-daemon --start -b --chdir "$WORK_DIR" --user "$CC_USER" -c "$CC_USER" --pidfile "$PID_FILE" --exec $DAEMON -- $DAEMON_OPTS
+	return=$?
+	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