{"record":{"id":"a50a9dc4667917fa","repo":"istio/istio","slug":"failed-to-execute-command-on-ztunnel-v","errorCode":null,"errorMessage":"failed to execute command on Ztunnel: %v","messagePattern":"failed to execute command on Ztunnel: (.+?)","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"istioctl/pkg/ztunnelconfig/ztunnelconfig.go","lineNumber":533,"sourceCode":"\tcommon.attach(cmd)\n\tcmd.PersistentFlags().BoolVarP(&reset, \"reset\", \"r\", reset, \"Reset levels to default value (warning).\")\n\tcmd.PersistentFlags().StringVar(&loggerLevelString, \"level\", loggerLevelString,\n\t\tfmt.Sprintf(\"Comma-separated minimum per-logger level of messages to output, in the form of\"+\n\t\t\t\" [<logger>:]<level>,[<logger>:]<level>,... or <level> to change all active loggers, \"+\n\t\t\t\"where logger components can be listed by running \\\"istioctl ztunnel-config log <pod-name[.namespace]>\\\"\"+\n\t\t\t\", and level can be one of %s\", levelListString))\n\treturn cmd\n}\n\nfunc setupZtunnelLogs(kubeClient kube.CLIClient, param, podName, podNamespace string, port int) (string, error) {\n\tpath := \"logging\"\n\tif param != \"\" {\n\t\tpath = path + \"?\" + param\n\t}\n\t// \"Envoy\" applies despite this being ztunnel\n\tresult, err := kubeClient.EnvoyDoWithPort(context.TODO(), podName, podNamespace, \"POST\", path, port)\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"failed to execute command on Ztunnel: %v\", err)\n\t}\n\treturn string(result), nil\n}\n\n// getComponentPodName returns the pod name and namespace of the Istio component\nfunc getComponentPodName(ctx cli.Context, podflag string, enforceSinglePod bool) (string, string, error) {\n\t// If user passed --namespace, respect it. Else fallback to --istio-namespace (which is typically defaulted, to istio-system).\n\treturn getPodNameWithNamespace(ctx, podflag, enforceSinglePod, model.GetOrDefault(ctx.Namespace(), ctx.IstioNamespace()))\n}\n\nfunc getPodNameWithNamespace(ctx cli.Context, podflag string, enforceSinglePod bool, ns string) (string, string, error) {\n\tif enforceSinglePod {\n\t\tpods, podNamespace, err := ctx.InferPodsFromTypedResource(podflag, ns)\n\t\tif err != nil {\n\t\t\treturn \"\", \"\", err\n\t\t}\n\t\tif len(pods) != 1 {\n\t\t\treturn \"\", \"\", fmt.Errorf(\"ztunnel pod name or --node must be set\")","sourceCodeStart":515,"sourceCodeEnd":551,"githubUrl":"https://github.com/istio/istio/blob/8dc789c5cf17517c64e3c36cb3288230f149dfae/istioctl/pkg/ztunnelconfig/ztunnelconfig.go#L515-L551","documentation":"Error \"failed to execute command on Ztunnel: %v\" thrown in istio/istio.","triggerScenarios":"Thrown at istioctl/pkg/ztunnelconfig/ztunnelconfig.go:533 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":"8dc789c5cf17517c64e3c36cb3288230f149dfae","analyzedAt":"2026-08-15T15:16:55.434Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}