kubernetes/kops · error

building instance metadata request: %w

Error message

building instance metadata request: %w

What it means

getLinodeMetadataValue wraps the http.NewRequestWithContext error when constructing the GET /v1/instance request that carries the metadata token. Like the token-request build error, it only fires on an invalid URL/method, i.e. a malformed metadataBaseURL.

Source

Thrown at upup/pkg/fi/cloudup/linode/linodemetadata/authenticator.go:104

	defer tokenResp.Body.Close()

	if tokenResp.StatusCode != http.StatusOK {
		return "", fmt.Errorf("fetching metadata token: unexpected status code %d", tokenResp.StatusCode)
	}

	tokenBytes, err := io.ReadAll(tokenResp.Body)
	if err != nil {
		return "", fmt.Errorf("reading metadata token response: %w", err)
	}

	token := strings.TrimSpace(string(tokenBytes))
	if token == "" {
		return "", fmt.Errorf("metadata token was empty")
	}

	instanceReq, err := http.NewRequestWithContext(ctx, http.MethodGet, metadataBaseURL+"/v1/instance", nil)
	if err != nil {
		return "", fmt.Errorf("building instance metadata request: %w", err)
	}
	instanceReq.Header.Set("Metadata-Token", token)

	instanceResp, err := client.Do(instanceReq)
	if err != nil {
		return "", fmt.Errorf("fetching instance metadata: %w", err)
	}
	defer instanceResp.Body.Close()

	if instanceResp.StatusCode != http.StatusOK {
		return "", fmt.Errorf("fetching instance metadata: unexpected status code %d", instanceResp.StatusCode)
	}

	instanceBytes, err := io.ReadAll(instanceResp.Body)
	if err != nil {
		return "", fmt.Errorf("reading instance metadata response: %w", err)
	}

View on GitHub (pinned to 4c8573c808)

Solutions

1. Validate metadataBaseURL is a well-formed absolute URL
2. Fix the configuration/code defect rather than retrying, since the error is deterministic

When it happens

Trigger: Thrown at upup/pkg/fi/cloudup/linode/linodemetadata/authenticator.go:104 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/b83200697135c3a5. Report an issue: GitHub.