{"record":{"id":"d8fabee771e13e29","repo":"hashicorp/nomad","slug":"failed-to-setup-stderr-log-tailing-v","errorCode":null,"errorMessage":"failed to setup stderr log tailing: %v","messagePattern":"failed to setup stderr log tailing: (.+?)","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"command/alloc_logs.go","lineNumber":383,"sourceCode":"\tstdoutFrames, stdoutErrCh := client.AllocFS().Logs(\n\t\talloc, true, l.task, api.FSLogNameStdout, api.OriginEnd, 0, cancel, nil)\n\n\t// Setting up the logs stream can fail, therefore we need to check the\n\t// error channel before continuing further.\n\tselect {\n\tcase err := <-stdoutErrCh:\n\t\treturn fmt.Errorf(\"failed to setup stdout log tailing: %v\", err)\n\tdefault:\n\t}\n\n\tstderrFrames, stderrErrCh := client.AllocFS().Logs(\n\t\talloc, true, l.task, api.FSLogNameStderr, api.OriginEnd, 0, cancel, nil)\n\n\t// Setting up the logs stream can fail, therefore we need to check the\n\t// error channel before continuing further.\n\tselect {\n\tcase err := <-stderrErrCh:\n\t\treturn fmt.Errorf(\"failed to setup stderr log tailing: %v\", err)\n\tdefault:\n\t}\n\n\t// Trap user signals, so we know when to exit and cancel the log streams\n\t// running in the background.\n\tsignalCh := make(chan os.Signal, 1)\n\tsignal.Notify(signalCh, os.Interrupt, syscall.SIGTERM)\n\n\t// Generate our logging UI that doesn't add any additional formatting to\n\t// output strings.\n\tlogUI, err := ui.NewLogUI(l.Ui)\n\tif err != nil {\n\t\treturn err\n\t}\n\n\t// Enter the main loop where we listen for log frames, errors, and a cancel\n\t// signal. Any error at this point will result in the stream being ended,\n\t// therefore should result in this command exiting. Otherwise, we would","sourceCodeStart":365,"sourceCodeEnd":401,"githubUrl":"https://github.com/hashicorp/nomad/blob/482b49bf1aec006f089bcfc7e632d8f6ac303e5e/command/alloc_logs.go#L365-L401","documentation":"Returned by tailMultipleFiles when the stderr Logs streaming setup call reports an error on its error channel before any frames arrive. Both stdout and stderr are streamed; this one covers the stderr leg.","triggerScenarios":"Thrown at command/alloc_logs.go:383 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Confirm the task exists and produced stderr logs","Check client health/connectivity","Retry the logs command"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"482b49bf1aec006f089bcfc7e632d8f6ac303e5e","analyzedAt":"2026-09-04T07:54:14.808Z","contentChangedAt":"2026-09-04T07:54:14.808Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}