{"record":{"id":"c9220d26cd335597","repo":"kubernetes/kops","slug":"error-starting-challenge-listener-w-c9220d","errorCode":null,"errorMessage":"error starting challenge listener: %w","messagePattern":"error starting challenge listener: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"upup/pkg/fi/nodeup/nodetasks/bootstrap_client.go","lineNumber":95,"sourceCode":"\n\treq := nodeup.BootstrapRequest{\n\t\tAPIVersion: nodeup.BootstrapAPIVersion,\n\t\tCerts:      map[string]string{},\n\t\tKeypairIDs: b.KeypairIDs,\n\t}\n\n\tvar challengeServer *bootstrap.ChallengeServer\n\tif b.UseChallengeCallback {\n\t\ts, err := bootstrap.NewChallengeServer(b.ClusterName, b.Client.CAs)\n\t\tif err != nil {\n\t\t\treturn err\n\t\t}\n\t\tchallengeServer = s\n\t\tlisten := \":\" + strconv.Itoa(wellknownports.NodeupChallenge)\n\n\t\tlistener, err := challengeServer.NewListener(ctx, listen)\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"error starting challenge listener: %w\", err)\n\t\t}\n\t\tdefer listener.Stop()\n\n\t\treq.Challenge = listener.CreateChallenge()\n\t}\n\n\tif b.keys == nil {\n\t\tb.keys = map[string]*pki.PrivateKey{}\n\t}\n\n\tfor name, certRequest := range b.Certs {\n\t\tkey, ok := b.keys[name]\n\t\tif !ok {\n\t\t\tvar err error\n\t\t\tkey, err = pki.GeneratePrivateKey()\n\t\t\tif err != nil {\n\t\t\t\treturn fmt.Errorf(\"generating private key: %v\", err)\n\t\t\t}","sourceCodeStart":77,"sourceCodeEnd":113,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/upup/pkg/fi/nodeup/nodetasks/bootstrap_client.go#L77-L113","documentation":"Error \"error starting challenge listener: %w\" thrown in kubernetes/kops.","triggerScenarios":"Thrown at upup/pkg/fi/nodeup/nodetasks/bootstrap_client.go:95 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"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"}