VMware Integrated Openstack upgrade fails with "Internal error: REST API transport layer error"

Products

• VMware
• VMware Integrated OpenStack

Issue/Introduction

Symptoms:

• When upgrading from VIO 4.1 to VIO 5.1, you receive a popup that states "Internal error: REST API transport layer error."
• You hit this after step 11c in Migrate to the New VMware Integrated OpenStack Deployment
• In /var/log/oms.log you see entries similar to:

[2019-08-15T22:13:15.430+0000] ERROR catalina-exec-7| com.vmware.openstack.rest.common.RestExceptionHandler: rest call error
com.vmware.openstack.exception.BddException: Internal error: REST API transport layer error.
...
Caused by: java.lang.NullPointerException

Note:  The preceding log excerpts are only examples.  Date, time, and environmental variables may vary depending on your environment.

Environment

VMware Integrated OpenStack 4.x
VMware Integrated OpenStack 5.x

Cause

There were changes in data schema for keystone multi-domain support from VIO 4.1 to VIO 5.1 that cause this NullPointerException.

Resolution

This is a known issue affecting VMware Integrated Openstack 5.x.

Workaround:
Follow Revert to a Previous VMware Integrated OpenStack Deployment .