kubernetes/kops · error

no urls were specified

Error message

no urls were specified

What it means

addURLs was invoked with an empty URL list — the id segment after '@' split on commas produced zero URLs, so there is nothing to register for the asset.

Source

Thrown at upup/pkg/fi/assetstore.go:234

	}
	if i == -1 {
		i = strings.Index(id, "@azureblob://")
	}
	if i != -1 {
		urls := strings.Split(id[i+1:], ",")
		hash, err := hashing.FromString(id[:i])
		if err != nil {
			return err
		}
		return a.addURLs(ctx, urls, hash)
	}
	// TODO: local files!
	return fmt.Errorf("unknown asset format: %q", id)
}

func (a *AssetStore) addURLs(ctx context.Context, urls []string, hash *hashing.Hash) error {
	if len(urls) == 0 {
		return fmt.Errorf("no urls were specified")
	}

	var err error
	if hash == nil {
		for _, url := range urls {
			hash, err = hashFromHTTPHeader(url)
			if err != nil {
				klog.Warningf("unable to get hash from %q: %v", url, err)
				continue
			} else {
				break
			}
		}
		if err != nil {
			return err
		}
	}

View on GitHub (pinned to 4c8573c808)

Solutions

  1. Ensure at least one URL follows the '@' in the asset id
  2. Check for stray commas or truncation in the asset id string
Defensive patterns

Strategy: validation

When it happens

Trigger: Thrown at upup/pkg/fi/assetstore.go:234 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of kubernetes/kops@4c8573c808 (2026-09-05). Data as JSON: /api/errors/296790142ecb2064. Report an issue: GitHub.