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

 

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