Upgrade Coordinator UI Unresponsive or Greyed Out in vLCM Clusters NSX

Products

• VMware NSX

Issue/Introduction

 In a vSphere Lifecycle Manager (vLCM) enabled environment, the "Resume" button within the NSX Upgrade Coordinator UI becomes unresponsive or greyed out, preventing the upgrade process from proceeding.

Environment

• NSX-T 4.x / NSX 4.x
• vSphere Lifecycle Manager (vLCM) enabled clusters

Cause

State inconsistency within the active Upgrade Coordinator service on the NSX Manager node, resulting in a service-level deadlock.

Resolution

1. Restart the Upgrade Coordinator Service: Access the NSX Manager CLI and restart the service to attempt to clear the deadlock:
   • restart service install-upgrade
2. Reboot the NSX Manager: If the restart does not restore UI functionality, reboot the NSX Manager node currently hosting the active Upgrade Coordinator service.
3. Resume Upgrade: Once the NSX Manager is fully online, navigate to the NSX UI and attempt to resume the upgrade process.

Note: If the issue persists, ensure the upgrade plan is consistent by executing the reset API if necessary: curl -k -u admin -X POST "https://<NSX-MANAGER-IP>/api/v1/upgrade/plan?action=reset&component_type=HOST"

Additional Information

• For architectural constraints regarding group splitting in vLCM clusters, refer to KB 427537
• For log retrieval best practices, refer to KB 28442