Error "Exceeded maximum number of retries. Exhausted all hosts available for retrying build failures for instance <Instance UUID>" received while deploying an instance.

Products

• VMware Integrated OpenStack

Issue/Introduction

Deploying an instance in Openstack fails. 

 nova-conductor log shows that that there is an issue at the vSphere infrastructure layer

"oslo_vmware.exceptions.VimFaultException: An error occurred during host configuration.\nFaults: ['PlatformConfigFault']\n", '\nDuring handling of the above exception, another exception occurred:\n\n', 'Traceback (most recent call last):\n', '  File "/usr/lib/python3.7/site-packages/nova/compute/manager.py", line 2280, in _do_build_and_run_instance\n    filter_properties, request_spec)\n', '  File "/usr/lib/python3.7/site-packages/nova/compute/manager.py", line 2660, in _build_and_run_instance\n    instance_uuid=instance.uuid, reason=six.text_type(e))\n', "nova.exception.RescheduledException: Build of instance <UUID> was re-scheduled: An error occurred during host configuration.\nFaults: ['PlatformConfigFault']\n"]

vpxd.log 

2025-10-13T17:54:18.623+11:00 info vpxd[41090] [Originator@6876 sub=Default opID=n-cpu-4349447d-bcf1-4596-907b-dffc5e96762b-f3] [VpxLRO] -- ERROR task-451851 -- vm-56484 -- vim.VirtualMachine.reconfigure: vim.fault.PlatformConfigFault:
--> Result:
--> (vim.fault.PlatformConfigFault) {
-->    faultCause = (vmodl.MethodFault) null,
-->    faultMessage = <unset>,
-->    text = "Failed to attach vif uuid to network nsx.LogicalSwitch:<Logical Switch ID>,TransportNode <Node ID> is not in the Transport zone TransportZone/<Transport Zone ID> of logical switch <Logical Switch ID>."
-->    msg = "An error occurred during host configuration."
--> }

 

Environment

7.x

 

Cause

The logical switch for the network adapter added to the instance and the ESXi host where the Virtual machine is created in the vShphere cluster are in different NSX transport zones.

Resolution

Add a network adapter to the instance that is in the same availability zone of the ESXi host where the Virtual Machine is created in the vSphere Cluster.