[Internal] SDDC Manager is displaying blank page on step 2 of NSX edge expansion wizard

Products

• VMware SDDC Manager

Issue/Introduction

SDDC Manager UI shows spinner on second step in Expand Edge Cluster Wizard spinning endlessly: 

Environment

VMware Cloud Foundation 4.x
VMware Cloud foundation 5.x

Cause

This is failing due to a timeout in larger scaled environments.

Resolution

This is fixed in VCF 5.2.1.

To workaround the issue in earlier releases use the following API or Developer Center.
 

1. Call Edge expansion validation API   (This prechecks the edge expansion )
   POST /v1/edge-clusters/<edge_cluster_sddc_inventory_id>/validations
   
   
2. Edge Expansion API:
   PATCH /v1/edge-clusters/<edge_cluster_sddc_inventory_id>