Hi Victor,
The error :
Fatal: Critical shutdown was invoked. Reason is: No no
tification from message server in 360000 ms. Triggering reboot of node
This may happen for two reason:
-CPU utilization may have reached to 100% which make the message server unresponsive.
- Network issue.
Paste the dev_server0 trace file
With Regards
Ashutosh Chaturvedi