openstack overcloud minor upgrade breaks if fixed virtual IP is within allocation pool ranges in Red Hat OpenStack Platform

Solution In Progress - Updated -

Issue

openstack overcloud minor upgrade breaks if fixed virtual IP is within allocation pool ranges in Red Hat OpenStack Platform

Initial deployment works, but a minor upgrade will lead to deployment failures similar to the following:

student02-Networks-rbq2rqjlav3p-InternalNetwork-ckir5nlfagsg
heat resource-show student02-Networks-rbq2rqjlav3p-InternalNetwork-ckir5nlfagsg InternalApiSubnet
====================
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Property               | Value                                                                                                                                                                                                   |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| attributes             | {                                                                                                                                                                                                       |
|                        |   "name": null,                                                                                                                                                                                         |
|                        |   "enable_dhcp": null,                                                                                                                                                                                  |
|                        |   "network_id": null,                                                                                                                                                                                   |
|                        |   "tenant_id": null,                                                                                                                                                                                    |
|                        |   "dns_nameservers": null,                                                                                                                                                                              |
|                        |   "allocation_pools": null,                                                                                                                                                                             |
|                        |   "host_routes": null,                                                                                                                                                                                  |
|                        |   "ip_version": null,                                                                                                                                                                                   |
|                        |   "gateway_ip": null,                                                                                                                                                                                   |
|                        |   "cidr": null                                                                                                                                                                                          |
|                        | }                                                                                                                                                                                                       |
| creation_time          | 2018-01-26T15:49:27                                                                                                                                                                                     |
| description            |                                                                                                                                                                                                         |
| links                  | http://172.16.0.11:8004/v1/2ffaf291f9cd4b9f8e6b53121d8c37a4/stacks/student02-Networks-rbq2rqjlav3p-InternalNetwork-ckir5nlfagsg/32119d5f-0e3f-476a-98fc-6f838c116870/resources/InternalApiSubnet (self) |
|                        | http://172.16.0.11:8004/v1/2ffaf291f9cd4b9f8e6b53121d8c37a4/stacks/student02-Networks-rbq2rqjlav3p-InternalNetwork-ckir5nlfagsg/32119d5f-0e3f-476a-98fc-6f838c116870 (stack)                            |
| logical_resource_id    | InternalApiSubnet                                                                                                                                                                                       |
| parent_resource        | InternalNetwork                                                                                                                                                                                         |
| physical_resource_id   |                                                                                                                                                                                                         |
| required_by            |                                                                                                                                                                                                         |
| resource_name          | InternalApiSubnet                                                                                                                                                                                       |
| resource_status        | CREATE_FAILED                                                                                                                                                                                           |
| resource_status_reason | BadRequest: resources.InternalApiSubnet: Invalid input for operation: Requested subnet with cidr: 172.16.1.0/24 for network: 09d309e9-fee2-479e-b01e-701eb5783b83 overlaps with another subnet.         |
|                        | Neutron server returns request_ids: ['req-fccb6518-fbdf-4cb0-8223-4a01402a6bde']                                                                                                                        |
| resource_type          | OS::Neutron::Subnet                                                                                                                                                                                     |
| updated_time           | 2018-01-26T15:49:27                                                                                                                                                                                     |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

Environment

Red Hat OpenStack Platform

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