PowerFlex 4.X: Create Node pool generates a 500 error

Screenshot of the error:
 

There was a psql pod failure, which may cause the deletion of the admin user.

Restarting the asmmanager pod can solve some of the UI problems. 

1.  ssh to the master node
2.  Get the asmmanager pod named and ID

# kubectl get pods -n powerflex | grep asmm
 asmmanager-666798d4b9-hhsk6 1/1 Running 0 21h3. 

To restart the pod, delete the pod using the pod name and ID you get from the above command:

# kubectl delete -n powerflex asmmanager-666798d4b9-hhsk6