{"record":{"id":"c6f56180d1bb92f2","repo":"googleapis/mcp-toolbox","slug":"unable-to-set-up-meter-provider-w","errorCode":null,"errorMessage":"unable to set up meter provider: %w","messagePattern":"unable to set up meter provider: %w","errorType":"error_code","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/telemetry/telemetry.go","lineNumber":83,"sourceCode":"\tres, err := newResource(ctx, versionString, telemetryServiceName)\n\tif err != nil {\n\t\terrMsg := fmt.Errorf(\"unable to set up resource: %w\", err)\n\t\thandleErr(errMsg)\n\t\treturn\n\t}\n\n\ttracerProvider, err := newTracerProvider(ctx, res, telemetryOTLP, telemetryGCP, telemetryGCPProject)\n\tif err != nil {\n\t\terrMsg := fmt.Errorf(\"unable to set up trace provider: %w\", err)\n\t\thandleErr(errMsg)\n\t\treturn\n\t}\n\tshutdownFuncs = append(shutdownFuncs, tracerProvider.Shutdown)\n\totel.SetTracerProvider(tracerProvider)\n\n\tmeterProvider, err := newMeterProvider(ctx, res, telemetryOTLP, telemetryGCP, telemetryGCPProject)\n\tif err != nil {\n\t\terrMsg := fmt.Errorf(\"unable to set up meter provider: %w\", err)\n\t\thandleErr(errMsg)\n\t\treturn\n\t}\n\tshutdownFuncs = append(shutdownFuncs, meterProvider.Shutdown)\n\totel.SetMeterProvider(meterProvider)\n\n\treturn shutdown, nil\n}\n\n// newResource create default resources for telemetry data.\n// Resource represents the entity producing telemetry.\nfunc newResource(ctx context.Context, versionString string, telemetryServiceName string) (*resource.Resource, error) {\n\t// Ensure default SDK resources and the required service name are set.\n\tr, err := resource.New(\n\t\tctx,\n\t\tresource.WithFromEnv(),      // Discover and provide attributes from OTEL_RESOURCE_ATTRIBUTES and OTEL_SERVICE_NAME environment variables.\n\t\tresource.WithTelemetrySDK(), // Discover and provide information about the OTel SDK used.\n\t\tresource.WithOS(),           // Discover and provide OS information.","sourceCodeStart":65,"sourceCodeEnd":101,"githubUrl":"https://github.com/googleapis/mcp-toolbox/blob/8cc6e09de2ad7b8bffc77751799585a1401a48eb/internal/telemetry/telemetry.go#L65-L101","documentation":"SetupOTel failed to create the metrics (meter) provider. After the tracer provider is installed, newMeterProvider wires the metric exporter (OTLP or GCP Cloud Monitoring); any failure is wrapped as 'unable to set up meter provider' and delivered to handleErr, aborting telemetry setup before instruments are created.","triggerScenarios":"Calling Setup/SetupOTel with metrics enabled where newMeterProvider errors — invalid OTLP metrics endpoint, GCP Cloud Monitoring credential/project failure, or exporter configuration errors.","commonSituations":"Unreachable OTLP collector on the metrics port, missing GCP credentials or monitoring API not enabled for the project, wrong --telemetry-metrics flags, egress/firewall blocking metric export.","solutions":["Inspect the error sent to handleErr; for OTLP, confirm the metrics endpoint and collector health.","For GCP, verify ADC credentials, project ID, and that the Cloud Monitoring API is enabled.","Validate the telemetry flags (--telemetry-metrics, otlp/gcp selection) for correct values.","Check network egress/firewall to the metrics backend from the host.","If metrics are optional, disable them so the server can start without telemetry."],"exampleFix":"// before\n--telemetry-gcp --telemetry-gcp-project=\"\" // empty project\n// after\n--telemetry-gcp --telemetry-gcp-project=\"my-gcp-project\"","handlingStrategy":"try-catch","validationCode":"// Pre-flight: check metrics exporter reachability and GCP project\nif (process.env.TELEMETRY_GCP === 'true' && !process.env.GOOGLE_CLOUD_PROJECT) {\n  console.error('telemetryGCP requires a project id');\n}","typeGuard":null,"tryCatchPattern":"try { await setupOTel(); }\ncatch (e) {\n  if (String(e.message).includes(\"unable to set up meter provider\")) {\n    // check metrics endpoint/GCP creds/monitoring API; restart with metrics disabled if optional\n  }\n}","preventionTips":["Confirm the OTLP metrics endpoint and collector health before startup.","Enable the Cloud Monitoring API and provide valid ADC credentials when using the GCP exporter.","Set an explicit GCP project ID; avoid empty values.","Validate telemetry CLI flags against documented combinations.","Design deployments so metrics export failure does not block server startup."],"tags":["telemetry","opentelemetry","metrics","otlp","gcp","setup"],"backgroundTag":"otel-initialization-failed","analyzedSha":"8cc6e09de2ad7b8bffc77751799585a1401a48eb","analyzedAt":"2026-09-05T01:10:36.887Z","contentChangedAt":"2026-09-05T01:10:36.887Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}