verified in "4.7.0-0.ci.test-2021-06-02-033128-ci-ln-rv5lck2-latest" ci image. With the patch revert in place, the unformatted hostnames are now accepted and functional: ------- oc get clusterversion NAME VERSION AVAILABLE PROGRESSING SINCE STATUS version 4.7.0-0.ci.test-2021-06-02-033128-ci-ln-rv5lck2-latest True False 10m Cluster version is 4.7.0-0.ci.test-2021-06-02-033128-ci-ln-rv5lck2-latest oc get svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/service-secure ClusterIP 172.30.209.51 <none> 27443/TCP 7s service/service-unsecure ClusterIP 172.30.60.116 <none> 27017/TCP 6s oc expose svc service-unsecure --hostname=foobar route.route.openshift.io/service-unsecure exposed oc get route service-unsecure -o yaml apiVersion: route.openshift.io/v1 kind: Route metadata: creationTimestamp: "2021-06-02T04:17:38Z" labels: name: service-unsecure name: service-unsecure namespace: test1a resourceVersion: "32749" uid: 1db916cd-722e-456b-ac89-55331183bed2 spec: host: foobar port: targetPort: http to: kind: Service name: service-unsecure weight: 100 wildcardPolicy: None status: ingress: - conditions: - lastTransitionTime: "2021-06-02T04:17:39Z" status: "True" type: Admitted host: foobar routerCanonicalHostname: apps.ci-ln-rv5lck2-f76d1.origin-ci-int-gce.dev.openshift.com routerName: default wildcardPolicy: None -------
Copying the comment from https://bugzilla.redhat.com/show_bug.cgi?id=1957584#c21 as it is more appropriate for the bug with 4.7.z target release. We are not considering this as UpgradeBlocker because we don't know how many clusters are impacted as this information isn't submitted via Telemetry/Insights. However if we see more customer cases we might change our stance.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (OpenShift Container Platform 4.7.18 bug fix update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2021:2502