NSX upgrade pre-check failed with an error indicating "Overall status of edge transport node <UUID> is UNKNOWN" for an Edge Transport Node.

Products

• VMware NSX

Issue/Introduction

• When upgrading NSX via SDDC and while running pre-checks there is a prompt with error stating "Overall status of edge transport node <UUID> is UNKNOWN" 
  
  
  
  
• When validated from NSX UI, the controller connectivity of the affected edge node is in an "unknown" state.
• CLI validation on the Edge node revealed that controller connectivity and manager connectivity are both good and ports 1234/1235 are confirmed to be connecting fine via nc (netcat) command
  
  
  

Environment

VMware NSX
VMware NSX-T Datacenter

Resolution

Since the required network connectivity between the problem edge node and the manager nodes are fine, follow the below steps to see if these resolve the issue.

• Try restarting nsx-nestdb agent and nsx-opsagent on the problem edge node using below commands from root shell
• • /etc/init.d/nsx-proxy restart
  • /etc/init.d/nsx-nestdb restart
  • /etc/init.d/nsx-opsagent-appliance restart

Note: In NSX 3.# version the agent name is 'nsx-opsagent'

• Perform sync operation for the respective edge node: 
  • Navigate to System > Fabric > Nodes > Edge Transport Nodes.
  • Select the problematic Edge Node.
  • Click Actions > Sync Edge Node Configuration.
  • If the status remains stuck, select the node, click Edit, and then click Save without making changes to trigger a refresh.

If the issue persists after trying the above steps, please open a case with Broadcom Support Team for further troubleshooting