{"record":{"id":"11db5cc5d1dccfaa","repo":"kubernetes/kops","slug":"building-path-for-q-w-11db5c","errorCode":null,"errorMessage":"building path for %q: %w","messagePattern":"building path for %q: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"upup/pkg/fi/http.go","lineNumber":109,"sourceCode":"\tdefer func() {\n\t\tklog.V(2).Infof(\"Downloading %q took %q\", desturl, time.Since(start))\n\t}()\n\tklog.V(2).Infof(\"Downloading %q\", desturl)\n\n\talgorithm := hashing.HashAlgorithmSHA256\n\tif hash != nil {\n\t\talgorithm = hash.Algorithm\n\t}\n\thasher := algorithm.NewHasher()\n\twriter := io.MultiWriter(dest, hasher)\n\n\tswitch u.Scheme {\n\tcase \"gs\", \"s3\", \"azureblob\":\n\t\t// vfs resolves the bucket and signs the request with the ambient cloud credentials,\n\t\t// such as the instance identity.\n\t\tp, err := vfs.Context.BuildVfsPath(desturl)\n\t\tif err != nil {\n\t\t\treturn nil, fmt.Errorf(\"building path for %q: %w\", desturl, err)\n\t\t}\n\t\tcloudPath, ok := p.(vfs.WriterToWithContext)\n\t\tif !ok {\n\t\t\treturn nil, fmt.Errorf(\"path type %T for %q does not implement WriteToWithContext\", p, desturl)\n\t\t}\n\t\tif _, err := cloudPath.WriteToWithContext(ctx, writer); err != nil {\n\t\t\treturn nil, fmt.Errorf(\"error downloading content from %q: %w\", desturl, err)\n\t\t}\n\tdefault:\n\t\treader, err := OpenURL(desturl)\n\t\tif err != nil {\n\t\t\treturn nil, err\n\t\t}\n\t\tdefer reader.Close()\n\n\t\tif _, err := io.Copy(writer, reader); err != nil {\n\t\t\treturn nil, fmt.Errorf(\"error downloading HTTP content from %q: %v\", desturl, err)\n\t\t}","sourceCodeStart":91,"sourceCodeEnd":127,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/upup/pkg/fi/http.go#L91-L127","documentation":"For gs://, s3://, or azureblob:// URLs the downloader builds a vfs.Path via vfs.Context.BuildVfsPath so the object is fetched with ambient cloud credentials. If the URL doesn't map to a valid VFS path for that scheme, this error wraps the cause.","triggerScenarios":"BuildVfsPath fails for a cloud-storage URL: wrong bucket name, unsupported location/region string, or scheme configured but cloud provider not enabled in the build.","commonSituations":"Typo in bucket name in a mirrored asset URL; using gs:// URLs while running on a non-GCP build/config; bucket in an unsupported region.","solutions":["Check the wrapped error for the vfs path-building failure detail","Verify the bucket name and region in the URL are correct and the bucket exists","Ensure the URL scheme matches your cloud provider setup (s3 on AWS, gs on GCP, azureblob on Azure)","Verify cloud credentials are configured for the ambient provider"],"exampleFix":"// before\nurl: \"s3://my-bucket-with-a-typo/file.tgz\"\n// after\nurl: \"s3://my-bucket/file.tgz\"","handlingStrategy":"validation","validationCode":"u, _ := url.Parse(assetURL)\nswitch u.Scheme {\ncase \"s3\":\n    if _, err := awsConfig.Credentials.Retrieve(ctx); err != nil {\n        return fmt.Errorf(\"AWS credentials required for %s: %w\", assetURL, err)\n    }\ncase \"gs\", \"azureblob\":\n    return fmt.Errorf(\"scheme %s not configured in this environment\", u.Scheme)\n}","typeGuard":null,"tryCatchPattern":"if _, err := fi.DownloadURL(ctx, assetURL, dest, nil); err != nil {\n    if strings.Contains(err.Error(), \"building path for\") {\n        return fmt.Errorf(\"check bucket name/region and provider for %s: %w\", assetURL, err)\n    }\n    return err\n}","preventionTips":["Verify bucket names and regions before referencing them in specs","Match URL scheme to the cloud provider (s3/gs/azureblob)","Test bucket access with the cloud CLI before provisioning"],"tags":["vfs","cloud-storage","download"],"backgroundTag":"vfs-path-build-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"}