1.9.2. Identifying the problem: Clusters offline after certificate change
After updating the information for a custom API server certificate, clusters that were imported and running before the new certificate are now in an offline state.
The errors that indicate that the certificate is the problem are found in the logs for the pods in the open-cluster-management-agent namespace of the offline managed cluster. The following examples are similar to the errors that are displayed in the logs:
Log of work-agent:
E0917 03:04:05.874759 1 manifestwork_controller.go:179] Reconcile work test-1-klusterlet-addon-workmgr fails with err: Failed to update work status with err Get "https://api.aaa-ocp.dev02.location.com:6443/apis/cluster.management.io/v1/namespaces/test-1/manifestworks/test-1-klusterlet-addon-workmgr": x509: certificate signed by unknown authority E0917 03:04:05.874887 1 base_controller.go:231] "ManifestWorkAgent" controller failed to sync "test-1-klusterlet-addon-workmgr", err: Failed to update work status with err Get "api.aaa-ocp.dev02.location.com:6443/apis/cluster.management.io/v1/namespaces/test-1/manifestworks/test-1-klusterlet-addon-workmgr": x509: certificate signed by unknown authority E0917 03:04:37.245859 1 reflector.go:127] k8s.io/client-go@v0.19.0/tools/cache/reflector.go:156: Failed to watch *v1.ManifestWork: failed to list *v1.ManifestWork: Get "api.aaa-ocp.dev02.location.com:6443/apis/cluster.management.io/v1/namespaces/test-1/manifestworks?resourceVersion=607424": x509: certificate signed by unknown authority
Log of registration-agent:
I0917 02:27:41.525026 1 event.go:282] Event(v1.ObjectReference{Kind:"Namespace", Namespace:"open-cluster-management-agent", Name:"open-cluster-management-agent", UID:"", APIVersion:"v1", ResourceVersion:"", FieldPath:""}): type: 'Normal' reason: 'ManagedClusterAvailableConditionUpdated' update managed cluster "test-1" available condition to "True", due to "Managed cluster is available"
E0917 02:58:26.315984 1 reflector.go:127] k8s.io/client-go@v0.19.0/tools/cache/reflector.go:156: Failed to watch *v1beta1.CertificateSigningRequest: Get "https://api.aaa-ocp.dev02.location.com:6443/apis/cluster.management.io/v1/managedclusters?allowWatchBookmarks=true&fieldSelector=metadata.name%3Dtest-1&resourceVersion=607408&timeout=9m33s&timeoutSeconds=573&watch=true"": x509: certificate signed by unknown authority
E0917 02:58:26.598343 1 reflector.go:127] k8s.io/client-go@v0.19.0/tools/cache/reflector.go:156: Failed to watch *v1.ManagedCluster: Get "https://api.aaa-ocp.dev02.location.com:6443/apis/cluster.management.io/v1/managedclusters?allowWatchBookmarks=true&fieldSelector=metadata.name%3Dtest-1&resourceVersion=607408&timeout=9m33s&timeoutSeconds=573&watch=true": x509: certificate signed by unknown authority
E0917 02:58:27.613963 1 reflector.go:127] k8s.io/client-go@v0.19.0/tools/cache/reflector.go:156: Failed to watch *v1.ManagedCluster: failed to list *v1.ManagedCluster: Get "https://api.aaa-ocp.dev02.location.com:6443/apis/cluster.management.io/v1/managedclusters?allowWatchBookmarks=true&fieldSelector=metadata.name%3Dtest-1&resourceVersion=607408&timeout=9m33s&timeoutSeconds=573&watch=true"": x509: certificate signed by unknown authority