Trying to create the second cluster using the same cluster name and base domain as the first cluster would fail, as expected, because of the dns record-sets conflicts. But deleting the second cluster leads to the first cluster inaccessible, which is unexpected. 

    4.15.0-0.nightly-2024-01-14-100410

    Always

1. create the first cluster and make sure it succeeds
2. try to create the second cluster, with the same cluster name, base domain, and region, and make sure it failed
3. destroy the second cluster which failed due to "Platform Provisioning Check"
4. check if the first cluster is still healthy     

    The first cluster turns unhealthy, because the dns record-sets are deleted by step3

    The dns record-sets of the first cluster stay untouched during step3, and the the first cluster stays healthy after step3.

(1) the first cluster is by Flexy-install job https://mastern-jenkins-csb-openshift-qe.apps.ocp-c1.prod.psi.redhat.com/job/ocp-common/job/Flexy-install/257549/, and it's healthy initially

$ oc get clusterversion
NAME      VERSION                              AVAILABLE   PROGRESSING   SINCE   STATUS
version   4.15.0-0.nightly-2024-01-14-100410   True        False         54m     Cluster version is 4.15.0-0.nightly-2024-01-14-100410
$ oc get nodes
NAME                                                       STATUS   ROLES                  AGE   VERSION
jiwei-0115y-lgns8-master-0.c.openshift-qe.internal         Ready    control-plane,master   73m   v1.28.5+c84a6b8
jiwei-0115y-lgns8-master-1.c.openshift-qe.internal         Ready    control-plane,master   73m   v1.28.5+c84a6b8
jiwei-0115y-lgns8-master-2.c.openshift-qe.internal         Ready    control-plane,master   74m   v1.28.5+c84a6b8
jiwei-0115y-lgns8-worker-a-gqq96.c.openshift-qe.internal   Ready    worker                 62m   v1.28.5+c84a6b8
jiwei-0115y-lgns8-worker-b-2h9xd.c.openshift-qe.internal   Ready    worker                 63m   v1.28.5+c84a6b8
$ 

(2) try to create the second cluster and expect failing due to dns record already exists

$ openshift-install version
openshift-install 4.15.0-0.nightly-2024-01-14-100410
built from commit b6f320ab7eeb491b2ef333a16643c140239de0e5
release image registry.ci.openshift.org/ocp/release@sha256:385d84c803c776b44ce77b80f132c1b6ed10bd590f868c97e3e63993b811cc2d
release architecture amd64
$ mkdir test1
$ cp install-config.yaml test1
$ yq-3.3.0 r test1/install-config.yaml baseDomain
qe.gcp.devcluster.openshift.com
$ yq-3.3.0 r test1/install-config.yaml metadata
creationTimestamp: null
name: jiwei-0115y
$ yq-3.3.0 r test1/install-config.yaml platform
gcp:
  projectID: openshift-qe
  region: us-central1
$ openshift-install create cluster --dir test1
INFO Credentials loaded from file "/home/fedora/.gcp/osServiceAccount.json" 
INFO Consuming Install Config from target directory 
FATAL failed to fetch Terraform Variables: failed to fetch dependency of "Terraform Variables": failed to generate asset "Platform Provisioning Check": metadata.name: Invalid value: "jiwei-0115y": record(s) ["api.jiwei-0115y.qe.gcp.devcluster.openshift.com."] already exists in DNS Zone (openshift-qe/qe) and might be in use by another cluster, please remove it to continue 
$ 

(3) delete the second cluster

$ openshift-install destroy cluster --dir test1
INFO Credentials loaded from file "/home/fedora/.gcp/osServiceAccount.json" 
INFO Deleted 2 recordset(s) in zone qe            
INFO Deleted 3 recordset(s) in zone jiwei-0115y-lgns8-private-zone 
WARNING Skipping deletion of DNS Zone jiwei-0115y-lgns8-private-zone, not created by installer 
INFO Time elapsed: 37s                            
INFO Uninstallation complete!                     
$ 

(4) check the first cluster status and the dns record-sets

$ oc get clusterversion
Unable to connect to the server: dial tcp: lookup api.jiwei-0115y.qe.gcp.devcluster.openshift.com on 10.11.5.160:53: no such host
$
$ gcloud dns managed-zones describe jiwei-0115y-lgns8-private-zone
cloudLoggingConfig:
  kind: dns#managedZoneCloudLoggingConfig
creationTime: '2024-01-15T07:22:55.199Z'
description: Created By OpenShift Installer
dnsName: jiwei-0115y.qe.gcp.devcluster.openshift.com.
id: '9193862213315831261'
kind: dns#managedZone
labels:
  kubernetes-io-cluster-jiwei-0115y-lgns8: owned
name: jiwei-0115y-lgns8-private-zone
nameServers:
- ns-gcp-private.googledomains.com.
privateVisibilityConfig:
  kind: dns#managedZonePrivateVisibilityConfig
  networks:
  - kind: dns#managedZonePrivateVisibilityConfigNetwork
    networkUrl: https://www.googleapis.com/compute/v1/projects/openshift-qe/global/networks/jiwei-0115y-lgns8-network
visibility: private
$ gcloud dns record-sets list --zone jiwei-0115y-lgns8-private-zone
NAME                                          TYPE  TTL    DATA
jiwei-0115y.qe.gcp.devcluster.openshift.com.  NS    21600  ns-gcp-private.googledomains.com.
jiwei-0115y.qe.gcp.devcluster.openshift.com.  SOA   21600  ns-gcp-private.googledomains.com. cloud-dns-hostmaster.google.com. 1 21600 3600 259200 300
$ gcloud dns record-sets list --zone qe --filter='name~jiwei-0115y'
Listed 0 items.
$