VMware Advanced Load Balancer (ALB) appliances are missing on NSX UI after restoring NSX-T from backup

Products

• VMware
• VMware NSX

Issue/Introduction

Symptoms:

• You are using NSX Advanced Load Balancer (ALB) in your NSX environment.
• You recently restored your NSX Managers from backup.
• After NSX restore has been completed the NSX ALB appliances are not present in the appliance section in NSX UI and may show that you need to deploy.

• NSX ALB configurations may be still present in NSX UI and show in failed state. For example, configuration for virtual services.
• Communication between NSX ALB and NSX Manager/Environment is still functional without issue.
• You are unable to to redeploy a new ALB with the same configurations.

Environment

VMware NSX-T Data Center

Cause

This issue occurs due old entries remaining in the NSX database.

Resolution

This is a known issue impacting NSX-T Data Center.

Workaround:
Please make sure any configurations are backed up before running the below API.
This will remove the ALB from NSX and allow you to deploy it fresh again.

• Get the ALB controller deployments using the below API.

GET /policy/api/v1/alb/controller-nodes/deployments

• Delete NSX ALB controller configuration from NSX Managers using the below API and redeploy NSX ALB.

POST /policy/api/v1/alb/controller-nodes/deployments/<node-id>?action=delete

• Even after deleting the stale NSX ALB controller through above api if the stale entries are still available in the manager, you can delete the stale entry using forceful delete.

                  ^{POST /policy/api/v1/alb/controller-nodes/deployments/<node-id>?action=delete&force_delete=true&inaccessible}

• Once the controllers have been deleted new NSX ALB can be deployed through the NSX UI