Loadbalancers with UDP listeners will fail to create in VMware Integrated OpenStack 7.0 and 7.0.1

Products

• VMware
• VMware Integrated OpenStack

Issue/Introduction

Symptoms:

In VMware Integrated OpenStack 7.0.1 UDP listeners will fail to create. The loadbalancer can also not be deleted due to the error state.

 

In the neutron-server logs we see errors similar to the following:

Apr 07 13:52:20 controller-6rbqx752pg neutron-server[792]: 2021-04-07 13:52:20.322 177 ERROR vmware_nsx.services.lbaas.octavia.octavia_listener [req-884a7c05-761f-478f-b36b-01f8333ed4d6 - fdc2b4af145e46579915e3c67021e0ab - - -] NSX driver loadbalancer_delete_cascade failed to delete sub-object Bad lbaas-listener request: Cannot create listener 0828d208-bf9a-470b-b45d-a7357e89aa9d with protocol UDP.: neutron_lib.exceptions.BadRequest: Bad lbaas-listener request: Cannot create listener 0828d208-bf9a-470b-b45d-a7357e89aa9d with protocol UDP.

Environment

VMware Integrated Openstack 7.x

Cause

At the time of release the neutron plugin to NSX-T did not support creation of UDP listeners for VIO 7.0 and 7.0.1.

Resolution

This issue is resolved in VMware Integrated OpenStack 7.1 and 7.2.

• In 7.1 UDP listeners can be created by OpenStack Client.
• In 7.2 UDP listeners can be created in the OpenStack horizon GUI or by OpenStack Client.

Workaround:
If a loadbalancer is unable to be deleted due to being in error from this please open a support request. Reference this KB.