fixed #2406

loader.js

@@ -42,6 +42,7 @@ Loader.init = function(callback) {
 
 	process.on('SIGHUP', Loader.restart);
 	process.on('SIGUSR2', Loader.reload);
+	process.on('SIGTERM', Loader.stop);
 	callback();
 };
 
@@ -217,6 +218,16 @@ Loader.reload = function() {
 	});
 };
 
+Loader.stop = function() {
+	Object.keys(cluster.workers).forEach(function(id) {
+		// Gracefully close workers
+		cluster.workers[id].kill();
+	});
+
+	// Clean up the pidfile
+	fs.unlinkSync(__dirname + '/pidfile');
+};
+
 Loader.notifyWorkers = function (msg) {
 	Object.keys(cluster.workers).forEach(function(id) {
 		cluster.workers[id].send(msg);

nodebb

@@ -12,10 +12,11 @@ fi
 function pidExists() {
 	if [ -e "pidfile" ];
 		then
-			kill -s 0 $(cat pidfile);
+			if ps -p $(cat pidfile) > /dev/null
-			if [ !$? ];
 				then return 1;
-				else return 0;
+				else
+					rm ./pidfile;
+					return 0;
 			fi
 		else
 			return 0;