Start the monitoring and node daemons together

Add the monitoring daemon to the command starting the node daemon, given that
they both have to be started on all nodes.

Note that daemon-util only supports starting one daemon at the time, so the
actual command has to be composed as a sequence of two different daemon-util
invocations.

Also, the monitoring daemon invocation is conditional, depending on whether it
was enabled at configure time.

Signed-off-by: Michele Tartara <mtartara@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

lib/tools/node_daemon_setup.py

@@ -216,12 +216,17 @@ def Main():
         not opts.dry_run):
       logging.info("Restarting node daemon ...")
 
-      cmd = ("%s stop-all; %s start %s" %
-             (pathutils.DAEMON_UTIL, pathutils.DAEMON_UTIL, constants.NODED))
+      stop_cmd = "%s stop-all" % pathutils.DAEMON_UTIL
+      noded_cmd = "%s start %s" % (pathutils.DAEMON_UTIL, constants.NODED)
+      mond_cmd = ""
+      if constants.ENABLE_MOND:
+        mond_cmd = "%s start %s" % (pathutils.DAEMON_UTIL, constants.MOND)
+
+      cmd = "; ".join([stop_cmd, noded_cmd, mond_cmd])
 
       result = utils.RunCmd(cmd, interactive=True)
       if result.failed:
-        raise SetupError("Could not start the node daemon, command '%s'"
+        raise SetupError("Could not start the node daemons, command '%s'"
                          " failed: %s" % (result.cmd, result.fail_reason))
 
     logging.info("Node daemon successfully configured")