VKS guest cluster fails to deploy "NSX IP block exhausted"

Products

• VMware NSX
• VMware Container Networking with Antrea
• VMware vSphere Kubernetes Service

Issue/Introduction

• Running a describe on the failed cluster shows the following event.
  
  kubectl describe cluster <cluster-name> | grep "FailedRealizeNSXResource"
FailedRealizeNSXResource   virtualnetwork/<ID>         NSX IP block exhausted

Environment

VMware NSX
VMware VKS
VMware Container Networking with Antrea

Resolution

To resolve the issue:

1. Add an additional IP Block in: vCenter > Supervisor > Configure > Network > Namespace Network.
2. Deploy the guest cluster again from VKS.