Removing an NSX-T cluster/ domain in SDDC Manager fails with "Unable to create transport node collection error"

Products

• VMware Cloud Foundation

Issue/Introduction

Symptoms:

 

• NSX-T Remove Cluster/Remove Domain workflow will fail at Create Transport Node Collection task with an error  "Unable to create transport node collection error."
   
• Similar entries are seen in the /var/log/vmware/vcf/domainmanager/domainmanager.log:

2020-02-26T17:42:56.670+0000 ERROR [e1ab0e3d71da41ef,ac93] [c.v.v.c.f.p.n.p.a.ReCreateTransportNodeCollectionAction,dm-exec-4] Unable to create transport node collection: {}com.vmware.evo.sddc.orchestrator.exceptions.OrchTaskException: Unable to create transport node collection with profile bfcc3c38-53ce-46bb-a7d3-85a8fa73f6fd on compute collection dr26avip-1.rainpole.local through nsxmanager ad152881-4fad-403c-abec-d79c6efa96bc:domain-c58

Note: This log excerpt is an example. Date, time, and environmental variables may vary depending on your environment.

Environment

VMware Cloud Foundation 3.9.x

Resolution

This is known issue on VMware Cloud Foundation for VxRail environments where there are deployed running workload VMs in the cluster/ domain.

To resolve this issue, please complete the steps below:

1. Navigate to vCenter Web Client in a browser and login.
2. Go to the Cluster / Domain that is going to be deleted and power off all the VM(s) running.
3. Right click on the power off VM(s) and select delete from disk.
4. Return to the SDDC Manager UI and retry the failed task.