{"record":{"id":"d24335f677adea92","repo":"kubernetes/kops","slug":"error-marshaling-authentication-config-to-yaml-v","errorCode":null,"errorMessage":"error marshaling authentication config to yaml: %v","messagePattern":"error marshaling authentication config to yaml: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"nodeup/pkg/model/kube_apiserver.go","lineNumber":334,"sourceCode":"\t\t\tKind:       \"Config\",\n\t\t\tApiVersion: \"v1\",\n\t\t}\n\t\tconfig.Clusters = append(config.Clusters, &kubeconfig.KubectlClusterWithName{\n\t\t\tName:    \"webhook\",\n\t\t\tCluster: cluster,\n\t\t})\n\t\tconfig.Users = append(config.Users, &kubeconfig.KubectlUserWithName{\n\t\t\tName: \"kube-apiserver\",\n\t\t})\n\t\tconfig.CurrentContext = \"webhook\"\n\t\tconfig.Contexts = append(config.Contexts, &kubeconfig.KubectlContextWithName{\n\t\t\tName:    \"webhook\",\n\t\t\tContext: context,\n\t\t})\n\n\t\tmanifest, err := kops.ToRawYaml(config)\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"error marshaling authentication config to yaml: %v\", err)\n\t\t}\n\n\t\tc.AddTask(&nodetasks.File{\n\t\t\tPath:     PathAuthnConfig,\n\t\t\tContents: fi.NewBytesResource(manifest),\n\t\t\tType:     nodetasks.FileType_File,\n\t\t})\n\n\t\treturn nil\n\t}\n\n\tif b.NodeupConfig.APIServerConfig.Authentication.AWS != nil {\n\t\tid := \"aws-iam-authenticator\"\n\t\tkubeAPIServer.AuthenticationTokenWebhookConfigFile = new(PathAuthnConfig)\n\n\t\t{\n\t\t\tcluster := kubeconfig.KubectlCluster{\n\t\t\t\tServer:                   \"https://127.0.0.1:21362/authenticate\",","sourceCodeStart":316,"sourceCodeEnd":352,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/nodeup/pkg/model/kube_apiserver.go#L316-L352","documentation":"writeAuthenticationConfig wraps kops.ToRawYaml failure while serializing the webhook authentication kubeconfig for the kube-apiserver static pod. It fires when the generated config struct (clusters/users/contexts for the webhook) cannot be marshaled to YAML — practically only on unexpected struct/JSON-tag issues — and aborts adding the authentication config manifest.","triggerScenarios":"Thrown at nodeup/pkg/model/kube_apiserver.go:334 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Check the authentication webhook settings in the spec","Report encoding failures to kOps maintainers","Re-run nodeup"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"4c8573c808a73d578c5eadc86d410646ea0b0d73","analyzedAt":"2026-09-05T04:13:19.212Z","contentChangedAt":"2026-09-05T04:13:19.212Z","schemaVersion":2},"datasetVersion":"2026-09-12T07:17:12.445Z"}