Catch SIGTERM, SIGINT, SIGHUP and SIGQUIT to properly shutdown the

server.

gns3server/modules/base.py

@@ -89,6 +89,7 @@ class IModule(multiprocessing.Process):
         Starts the event loop
         """
 
+        log.info("{} module running with PID {}".format(self.name, self.pid))
         self._setup()
         try:
             self._ioloop.start()

gns3server/server.py

@@ -24,6 +24,7 @@ from zmq.eventloop import ioloop, zmqstream
 ioloop.install()
 
 import os
+import signal
 import errno
 import functools
 import socket
@@ -94,6 +95,13 @@ class Server(object):
         stream.on_recv(StompWebSocket.dispatch_message)
         tornado.autoreload.add_reload_hook(functools.partial(self._cleanup, stop=False))
 
+        def signal_handler(signum=None, frame=None):
+            log.warning("Got signal {}, exiting...".format(signum))
+            self._cleanup()
+
+        for sig in [signal.SIGTERM, signal.SIGINT, signal.SIGHUP, signal.SIGQUIT]:
+            signal.signal(sig, signal_handler)
+
         try:
             ioloop.start()
         except (KeyboardInterrupt, SystemExit):