クラスター Operator の Authentication、Console、Ingress が機能低下状態としてマークされてクラスターにログインできない

Issue

• クラスター Operator の Authentication、Console、Ingress が機能低下状態になっているため、クラスターコンソールにアクセスできません。

• Authentication Operator に関するエラーメッセージ:

  [...]
  status:
  conditions:
  message: 'OAuthServerRouteEndpointAccessibleControllerDegraded: Get "https://oauth-openshift.apps.<cluster-name>.<cluster-domain>/healthz": context deadline exceeded (Client.Timeout exceeded while awaiting headers)'
  reason: OAuthServerRouteEndpointAccessibleController_SyncError
  [...]
  message: 'OAuthServerRouteEndpointAccessibleControllerAvailable: Get "https://oauth-openshift.apps.<cluster-name>.<cluster-domain>/healthz": context deadline exceeded (Client.Timeout exceeded while awaiting headers)'
  reason: OAuthServerRouteEndpointAccessibleController_EndpointUnavailable
  

• Console Operator のエラーメッセージ:

  [...]
  status:
  conditions:
  message: 'RouteHealthDegraded: failed to GET route (https://console-openshift-console.apps.<cluster-name>.<cluster-domain>):
    Get "https://console-openshift-console.apps.<cluster-name>.<cluster-domain>":context deadline exceeded (Client.Timeout exceeded while awaiting headers)'
  reason: RouteHealth_FailedGet
  [...]
  message: |-
    DeploymentAvailable: 0 replicas available for console deployment
    RouteHealthAvailable: failed to GET route (https://console-openshift-console.apps.<cluster-name>.<cluster-domain>): Get "https://console-openshift-console.apps.<cluster-name>.<cluster-domain>": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
  reason: Deployment_InsufficientReplicas::RouteHealth_FailedGet
  

• Ingress Operator のエラーメッセージ:

  [...]
  status:
  conditions:
  message: |-
    ingresscontroller "default" is progressing: IngressControllerProgressing: One or more status conditions indicate progressing: DeploymentRollingOut=True (DeploymentRollingOut: Waiting for router deployment rollout to finish: 1 of 2 updated replica(s) are available...
    ).
  [...]
  message: 'The "default" ingress controller reports Degraded=True: DegradedConditions:
    One or more other status conditions indicate a degraded state: CanaryChecksSucceeding=False
    (CanaryChecksRepetitiveFailures: Canary route checks for the default ingress
    controller are failing)'
  reason: IngressDegraded