Add nginx init file

nginx/nginx-init

@@ -0,0 +1,209 @@
+#!/bin/sh
+
+### BEGIN INIT INFO
+# Provides:	  nginx
+# Required-Start:    $local_fs $remote_fs $network $syslog $named
+# Required-Stop:     $local_fs $remote_fs $network $syslog $named
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: starts the nginx web server
+# Description:       starts nginx using start-stop-daemon
+### END INIT INFO
+
+PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
+DAEMON=/usr/sbin/nginx
+NAME=nginx
+DESC=nginx
+
+# Include nginx defaults if available
+if [ -r /etc/default/nginx ]; then
+	. /etc/default/nginx
+fi
+
+test -x $DAEMON || exit 0
+
+. /lib/init/vars.sh
+. /lib/lsb/init-functions
+
+# Try to extract nginx pidfile
+PID=$(cat /etc/nginx/nginx.conf | grep -Ev '^\s*#' | awk 'BEGIN { RS="[;{}]" } { if ($1 == "pid") print $2 }' | head -n1)
+if [ -z "$PID" ]
+then
+	PID=/run/nginx.pid
+fi
+
+# Check if the ULIMIT is set in /etc/default/nginx
+if [ -n "$ULIMIT" ]; then
+	# Set the ulimits
+	ulimit $ULIMIT
+fi
+
+#
+# Function that starts the daemon/service
+#
+do_start()
+{
+	# Return
+	#   0 if daemon has been started
+	#   1 if daemon was already running
+	#   2 if daemon could not be started
+	start-stop-daemon --start --quiet --pidfile $PID --exec $DAEMON --test > /dev/null \
+		|| return 1
+	start-stop-daemon --start --quiet --pidfile $PID --exec $DAEMON -- \
+		$DAEMON_OPTS 2>/dev/null \
+		|| return 2
+}
+
+test_nginx_config() {
+	$DAEMON -t $DAEMON_OPTS >/dev/null 2>&1
+}
+
+#
+# Function that stops the daemon/service
+#
+do_stop()
+{
+	# Return
+	#   0 if daemon has been stopped
+	#   1 if daemon was already stopped
+	#   2 if daemon could not be stopped
+	#   other if a failure occurred
+	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PID --name $NAME
+	RETVAL="$?"
+
+	sleep 1
+	return "$RETVAL"
+}
+
+#
+# Function that sends a SIGHUP to the daemon/service
+#
+do_reload() {
+	start-stop-daemon --stop --signal HUP --quiet --pidfile $PID --name $NAME
+	return 0
+}
+
+#
+# Rotate log files
+#
+do_rotate() {
+	start-stop-daemon --stop --signal USR1 --quiet --pidfile $PID --name $NAME
+	return 0
+}
+
+#
+# Online upgrade nginx executable
+#
+# "Upgrading Executable on the Fly"
+# http://nginx.org/en/docs/control.html
+#
+do_upgrade() {
+	# Return
+	#   0 if nginx has been successfully upgraded
+	#   1 if nginx is not running
+	#   2 if the pid files were not created on time
+	#   3 if the old master could not be killed
+	if start-stop-daemon --stop --signal USR2 --quiet --pidfile $PID --name $NAME; then
+		# Wait for both old and new master to write their pid file
+		while [ ! -s "${PID}.oldbin" ] || [ ! -s "${PID}" ]; do
+			cnt=`expr $cnt + 1`
+			if [ $cnt -gt 10 ]; then
+				return 2
+			fi
+			sleep 1
+		done
+		# Everything is ready, gracefully stop the old master
+		if start-stop-daemon --stop --signal QUIT --quiet --pidfile "${PID}.oldbin" --name $NAME; then
+			return 0
+		else
+			return 3
+		fi
+	else
+		return 1
+	fi
+}
+
+case "$1" in
+	start)
+		[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
+		do_start
+		case "$?" in
+			0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+			2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+		esac
+		;;
+	stop)
+		[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
+		do_stop
+		case "$?" in
+			0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+			2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+		esac
+		;;
+	restart)
+		log_daemon_msg "Restarting $DESC" "$NAME"
+
+		# Check configuration before stopping nginx
+		if ! test_nginx_config; then
+			log_end_msg 1 # Configuration error
+			exit 0
+		fi
+
+		do_stop
+		case "$?" in
+			0|1)
+				do_start
+				case "$?" in
+					0) log_end_msg 0 ;;
+					1) log_end_msg 1 ;; # Old process is still running
+					*) log_end_msg 1 ;; # Failed to start
+				esac
+				;;
+			*)
+				# Failed to stop
+				log_end_msg 1
+				;;
+		esac
+		;;
+	reload|force-reload)
+		log_daemon_msg "Reloading $DESC configuration" "$NAME"
+
+		# Check configuration before reload nginx
+		#
+		# This is not entirely correct since the on-disk nginx binary
+		# may differ from the in-memory one, but that's not common.
+		# We prefer to check the configuration and return an error
+		# to the administrator.
+		if ! test_nginx_config; then
+			log_end_msg 1 # Configuration error
+			exit 0
+		fi
+
+		do_reload
+		log_end_msg $?
+		;;
+	configtest|testconfig)
+		log_daemon_msg "Testing $DESC configuration"
+		test_nginx_config
+		log_end_msg $?
+		;;
+	status)
+		status_of_proc -p $PID "$DAEMON" "$NAME" && exit 0 || exit $?
+		;;
+	upgrade)
+		log_daemon_msg "Upgrading binary" "$NAME"
+		do_upgrade
+		log_end_msg 0
+		;;
+	rotate)
+		log_daemon_msg "Re-opening $DESC log files" "$NAME"
+		do_rotate
+		log_end_msg $?
+		;;
+	*)
+		echo "Usage: $NAME {start|stop|restart|reload|force-reload|status|configtest|rotate|upgrade}" >&2
+		exit 3
+		;;
+esac
+
+: