{"record":{"id":"b85725a0ed557760","repo":"kubernetes/kops","slug":"cannot-parse-vfs-path-q-v-b85725","errorCode":null,"errorMessage":"cannot parse VFS path %q: %v","messagePattern":"cannot parse VFS path %q: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pkg/model/iam/iam_builder.go","lineNumber":597,"sourceCode":"\t\t\t\t\tklog.V(4).Infof(\"Ignoring location %q because found parent %q\", l, locations[j])\n\t\t\t\t\tisTopLevel = false\n\t\t\t\t}\n\t\t\t}\n\t\t\tif isTopLevel {\n\t\t\t\tklog.V(4).Infof(\"Found root location %q\", l)\n\t\t\t\troots = append(roots, l)\n\t\t\t}\n\t\t}\n\t}\n\n\tsort.Strings(roots)\n\n\ts3Buckets := sets.NewString()\n\n\tfor _, root := range roots {\n\t\tvfsPath, err := vfs.Context.BuildVfsPath(root)\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"cannot parse VFS path %q: %v\", root, err)\n\t\t}\n\n\t\tswitch path := vfsPath.(type) {\n\t\tcase *vfs.S3Path:\n\t\t\tiamS3Path := path.Bucket() + \"/\" + path.Key()\n\t\t\tiamS3Path = strings.TrimSuffix(iamS3Path, \"/\")\n\n\t\t\ts3Buckets.Insert(path.Bucket())\n\n\t\t\tif err := b.buildS3GetStatements(p, iamS3Path); err != nil {\n\t\t\t\treturn err\n\t\t\t}\n\n\t\tcase *vfs.MemFSPath:\n\t\t\t// Tests - we emulate the s3 permissions so that we can get an idea of the full policy\n\n\t\t\tiamS3Path := \"placeholder-read-bucket/\" + path.Location()\n\t\t\tb.buildS3GetStatements(p, iamS3Path)","sourceCodeStart":579,"sourceCodeEnd":615,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/pkg/model/iam/iam_builder.go#L579-L615","documentation":"AddS3Permissions returns this when vfs.Context.BuildVfsPath cannot parse one of the cluster's state-store root URLs into a vfs.Path. VFS paths must use a scheme kOps recognizes (s3://, file://, memfs://, etc.); a malformed or unknown URL makes IAM S3 statement generation impossible for that root.","triggerScenarios":"Any PolicyBuilder.AddS3Permissions call where a root derived from spec.configStore.base (or legacy ClusterName state location) is not a valid VFS path — e.g. empty scheme, unsupported protocol, or malformed bucket/key syntax passed to BuildVfsPath.","commonSituations":"Typo in the state store URL (s3:/bucket instead of s3://bucket); scheme for a VFS backend not compiled into the AWS context; leading/trailing whitespace or shell mangling of the --state flag; config hand-edited with an invalid base URL.","solutions":["Run the failing store string through `kops get clusters --state <url>` to see whether kOps can parse it.","Fix the URL syntax (double slash after scheme, valid bucket name) in spec.configStore.base or the --state flag.","Ensure the VFS backend for the scheme is supported in this build (e.g. only s3/file/memfs for AWS IAM generation).","Trim whitespace and shell-escape the --state value; verify with `kops toolbox dump` or re-run update."],"exampleFix":"// before\nbase: \"s3:my-bucket/clusters/example.k8s.local\" // no // after scheme -> parse fails\n// after\nbase: \"s3://my-bucket/clusters/example.k8s.local\"","handlingStrategy":"validation","validationCode":"if _, err := vfs.Context.BuildVfsPath(root); err != nil {\n    return fmt.Errorf(\"state store %q is not a valid VFS path\", root)\n}\nif !strings.HasPrefix(root, \"s3://\") {\n    return fmt.Errorf(\"AWS clusters require an s3:// state store, got %q\", root)\n}","typeGuard":null,"tryCatchPattern":"err := builder.AddS3Permissions(policy)\nif err != nil {\n    if strings.Contains(err.Error(), \"cannot parse VFS path\") {\n        // prompt user to fix --state / configStore.base\n    }\n    return err\n}","preventionTips":["Quote --state values in shell to avoid mangling","Double-slash always: s3://bucket/key","Test the store with `kops get clusters --state <url>` before updates"],"tags":["aws","s3","vfs","kops","url-parsing"],"backgroundTag":"vfs-path-parse-error","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"}