HCX migration UI fails to load during Mobility Group creation - VCF Operations

Products

• VMware HCX
• VCF Operations

Issue/Introduction

• The VMware HCX migration planning page fails to load or stops responding when attempting to create a Mobility Group. This issue typically occurs during migrations from source environments (such as Hyper-V) to VMware Cloud Foundation (VCF). Symptoms include a blank interface or an unresponsive loading screen while the system attempts to fetch the migration topology.
  
  
  
• The local site shows 0 Service Mesh, and NSX is not configured. 
  
• The following exception is recorded in the /common/logs/admin/web.log:

  com.vmware.vchs.hybridity.api.exception.InternalErrorException: Internal Server Exception occurred while collecting migration topology response at com.vmware.vchs.hybridity.api.site.MigrationTopologyController.migrationTopology(MigrationTopologyController.java:60)

Environment

VCF Operations HCX

Cause

VMware NSX is not configured on the local site. Without a valid NSX configuration, HCX is unable to gather the required network topology for the migration, which triggers a server-side exception during the collection process.

Resolution

To resolve this issue, configure VMware NSX for the local HCX site by following these steps:

1. Log in to the VMware HCX Manager UI via port 9443.
2. Navigate to Site Configuration settings.
3. Complete the VMware NSX configuration steps required to establish the local site.
4. Once NSX is configured and the local site status is valid, return to the migration UI to create the Mobility Group and schedule migrations.