{"record":{"id":"fabd458bcdc32ab6","repo":"kubernetes/kops","slug":"failed-to-read-metadata-information-s-v","errorCode":null,"errorMessage":"failed to read metadata information %s: %v","messagePattern":"failed to read metadata information (.+?): (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pkg/nodeidentity/do/identify.go","lineNumber":112,"sourceCode":"\toauthClient := oauth2.NewClient(context.TODO(), tokenSource)\n\treturn godo.NewClient(oauthClient), nil\n}\n\nfunc getMetadata(url string) (string, error) {\n\tresp, err := http.Get(url)\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"failed to get metadata URL %s: %v\", url, err)\n\t}\n\n\tdefer resp.Body.Close()\n\n\tif resp.StatusCode != http.StatusOK {\n\t\treturn \"\", fmt.Errorf(\"droplet metadata returned non-200 status code: %d\", resp.StatusCode)\n\t}\n\n\tbodyBytes, err := io.ReadAll(resp.Body)\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"failed to read metadata information %s: %v\", url, err)\n\t}\n\n\treturn string(bodyBytes), nil\n}\n\n// IdentifyNode queries DigitalOcean for the node identity information.\nfunc (i *nodeIdentifier) IdentifyNode(ctx context.Context, node *corev1.Node) (*nodeidentity.Info, error) {\n\tproviderID := node.Spec.ProviderID\n\tif providerID == \"\" {\n\t\treturn nil, errors.New(\"provider ID cannot be empty\")\n\t}\n\n\tconst prefix = \"digitalocean://\"\n\tif !strings.HasPrefix(providerID, prefix) {\n\t\treturn nil, fmt.Errorf(\"provider ID %q is missing prefix %q\", providerID, prefix)\n\t}\n\n\tinstanceID := strings.TrimPrefix(providerID, prefix)","sourceCodeStart":94,"sourceCodeEnd":130,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/pkg/nodeidentity/do/identify.go#L94-L130","documentation":"After a successful 200 response from the droplet metadata service, getMetadata reads the response body with io.ReadAll. This error is returned if streaming the body fails (connection reset mid-read, timeout, truncated response).","triggerScenarios":"io.ReadAll(resp.Body) returns an error when reading the 200 response from the droplet metadata endpoint — typically a dropped connection, read timeout, or malformed/chunked transfer abort.","commonSituations":"Flaky networking inside the droplet; metadata service under load closing connections; MTU/link-local issues truncating the response; container networking edge cases.","solutions":["Retry the metadata request; this is usually transient","Check droplet network health (link-local 169.254.169.254 reachability, MTU settings)","Verify no proxy or firewall is cutting off the response mid-transfer","If persistent, check DigitalOcean status page for metadata service incidents"],"exampleFix":null,"handlingStrategy":"retry","validationCode":null,"typeGuard":null,"tryCatchPattern":"meta, err := getMetadata(url)\nif err != nil {\n    if strings.Contains(err.Error(), \"failed to read metadata\") {\n        // transient IO error: retry with backoff\n    }\n}","preventionTips":["Set a client timeout and retry once or twice on body read failures","Keep link-local (169.254.169.254) traffic free of proxies and MTU hacks","Cache metadata results so transient read failures are tolerable","Watch DigitalOcean status for metadata service incidents"],"tags":["digitalocean","metadata","io","network"],"backgroundTag":"response-body-read-failed","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"}