{"record":{"id":"3d143a0db4bcb5b7","repo":"kubernetes/kops","slug":"failed-to-get-bucket-details-for-q-w","errorCode":null,"errorMessage":"failed to get bucket details for %q: %w","messagePattern":"failed to get bucket details for %q: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"util/pkg/vfs/s3fs.go","lineNumber":578,"sourceCode":"\t\treturn nil, nil\n\t}\n\n\tmd5 := strings.Trim(*p.etag, \"\\\"\")\n\n\tmd5Bytes, err := hex.DecodeString(md5)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"Etag was not a valid MD5 sum: %q\", *p.etag)\n\t}\n\n\treturn &hashing.Hash{Algorithm: hashing.HashAlgorithmMD5, HashValue: md5Bytes}, nil\n}\n\nfunc (p *S3Path) GetHTTPsUrl(dualstack bool) (string, error) {\n\tctx := context.TODO()\n\n\tbucketDetails, err := p.getBucketDetails(ctx)\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"failed to get bucket details for %q: %w\", p.String(), err)\n\t}\n\n\tresolver := s3.NewDefaultEndpointResolverV2()\n\tendpoint, err := resolver.ResolveEndpoint(ctx, s3.EndpointParameters{\n\t\tBucket:       aws.String(bucketDetails.name),\n\t\tRegion:       aws.String(bucketDetails.region),\n\t\tUseDualStack: aws.Bool(dualstack),\n\t})\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"failed to resolve endpoint for %q: %w\", p.String(), err)\n\t}\n\n\tendpoint.URI.Path = path.Join(endpoint.URI.Path, p.Key())\n\treturn endpoint.URI.String(), nil\n}\n\nfunc (p *S3Path) IsBucketPublic(ctx context.Context) (bool, error) {\n\tclient, err := p.client(ctx)","sourceCodeStart":560,"sourceCodeEnd":596,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/util/pkg/vfs/s3fs.go#L560-L596","documentation":"S3Path.GetHTTPsUrl builds a direct HTTPS console/API URL for the S3 object. Before resolving an endpoint it must determine the bucket's name and region via getBucketDetails (a HeadBucket-style call); this error wraps any failure of that lookup — the endpoint resolver never runs. The wrapped cause (usually NoSuchBucket or AccessDenied) is embedded via %w.","triggerScenarios":"Calling GetHTTPsUrl on an S3Path when getBucketDetails fails: bucket doesn't exist, the caller lacks s3:GetBucketLocation/HeadBucket permission, or the request can't reach the S3 API (network/credentials).","commonSituations":"Generating shareable URLs for state-store objects against a deleted or misspelled bucket; IAM role without HeadBucket rights; expired AWS credentials in kops controller environments.","solutions":["Inspect the wrapped error: for NoSuchBucket verify the bucket name in the state store path is correct and exists.","For AccessDenied, grant the caller s3:GetBucketLocation (and HeadBucket) on the bucket ARN.","Re-authenticate / refresh credentials (aws sts get-caller-identity) if the cause is an auth failure.","Retry if the wrapped error indicates a transient network problem."],"exampleFix":"// before\nurl, err := s3Path.GetHTTPsUrl(false)\n// after\nurl, err := s3Path.GetHTTPsUrl(false)\nif err != nil && strings.Contains(err.Error(), \"NotFound\") {\n    // validate bucket: aws s3api head-bucket --bucket <name> before retrying\n}","handlingStrategy":"validation","validationCode":"// verify bucket exists and credentials work before GetHTTPsUrl\n_, err := client.HeadBucket(ctx, &s3.HeadBucketInput{Bucket: aws.String(bucket)})\nif err != nil { return fmt.Errorf(\"bucket %s unreachable: %w\", bucket, err) }\nout, _ := stsClient.GetCallerIdentity(ctx, &sts.GetCallerIdentityInput{}) // credentials check","typeGuard":"func isBucketMissing(err error) bool {\n    return err != nil && strings.Contains(err.Error(), \"NotFound\")\n}","tryCatchPattern":"url, err := s3Path.GetHTTPsUrl(false)\nif err != nil {\n    if strings.Contains(err.Error(), \"NotFound\") {\n        return fmt.Errorf(\"state bucket %s not found — check --state: %w\", bucket, err)\n    }\n    return err\n}","preventionTips":["Validate the state-store bucket with head-bucket at configuration time.","Ensure the IAM role has s3:GetBucketLocation/HeadBucket, not just Get/PutObject.","Refresh AWS credentials before long-running controller operations.","Centralize bucket-name parsing to catch typos once, early."],"tags":["aws","s3","iam","url","permissions"],"backgroundTag":"s3-bucket-lookup-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"}