Unable to Delete NSX Advanced Load Balancer Controller

Problem

Unable to delete NSX Advanced Load Balancer controller.

Cause

If NSX Advanced Load Balancer objects exist and there is only one node left, NSX-T does not allow you to delete all the deployed NSX Advanced Load Balancer controller nodes. This issue occurred because NSX-T cannot access the node or you manually deleted the node from compute manager.

Solution

1. From a browser, log in with admin privileges to an NSX Manager at https://<nsx-manager-ip-address>.
2. Delete all existing NSX Advanced Load Balancer objects.
3. To delete the controller, go to

   System > Appliances > NSX Advanced Load Balancer

4. Click Actions and click Delete or Force Delete.
5. If load balancer objects are present, you cannot the delete the controller node remaining in the cluster. To delete the last controller node, run the following API command.
   Note: Pass the inaccessible flag only if NSX-T cannot access the node and it is the last node in the cluster.

   /policy/api/v1/alb/controller-nodes/deployments/{{node_id}}?action=delete&force_delete=true&inaccessible

   The API command deletes the controller node but the load balancer objects still exist in the system.