False alarm "Edge VM Present in NSX Inventory Not Present in vCenter" reported by NSX manager

Products

• VMware NSX

Issue/Introduction

• Edge VM was recently removed and confirmed it is no longer present in vCenter/ESXi host.
• On the NSX-T manager > Inventory tab > Virtual Machines you can confirm the Edge VM does not exist.
• NSX-T manager alarm reports "Edge VM Present in NSX Inventory Not Present in vCenter".
• Edge VM is present in vCenter with the correct moref Id.

Alarm snippet:

Environment

VMware NSX-T Data Center
VMware NSX

Resolution

This issue is resolved in VMware NSX 4.2.0

Workaround:
Restart the proton service on each manager node to ensure the monitoring cache is cleared.

1. Log in to the NSX Manager appliance using root.
2. Restart the proton service by running the below command:
   
   service proton restart
3. Perform a rolling reboot of the NSX Managers and the Edge VM nodes if Step 2 does not resolve.