Fireeye (Trellix) Network Security (NX) failed to reconnect (via proxy to connect Internet) when Cisco Umbrella (OpenDNS) traffic routed to another DC during schedule maintenance

Error message: 'Critical: 1# subscriber:OpenDNS is with http response code:502 details…..502 Bad Gateway

 

Check Cisco Umbrella Service status: there are schedule maintenance the traffic being re-routed to another DC.

https://status.umbrella.com/#/

 

Resolution:

 

Run CLI – 'show health system warning' and show fenotify healthcheck' to check the Details for subscriber status. Fix the subscriber

 

Run CLI – 'fenotify healthcechk recheck' fter fix the subscribers config and server