goharbor/harbor · error

unsupported auth scheme: %v

Error message

unsupported auth scheme: %v

What it means

Error "unsupported auth scheme: %v" thrown in goharbor/harbor.

Source

Thrown at src/pkg/registry/auth/authorizer.go:137

	if len(challenges) == 0 {
		a.authorizer = null.NewAuthorizer()
		return nil
	}
	cm := map[string]challenge.Challenge{}
	for _, challenge := range challenges {
		cm[challenge.Scheme] = challenge
	}
	if challenge, exist := cm["bearer"]; exist {
		a.authorizer = bearer.NewAuthorizer(challenge.Parameters["realm"],
			challenge.Parameters["service"], basic.NewAuthorizer(a.username, a.password),
			a.client.Transport)
		return nil
	}
	if _, exist := cm["basic"]; exist {
		a.authorizer = basic.NewAuthorizer(a.username, a.password)
		return nil
	}
	return fmt.Errorf("unsupported auth scheme: %v", challenges)
}

// Check whether the request targets to the registry.
// If doesn't, the request shouldn't be handled by the authorizer.
// e.g. the requests sent to backend storage(s3, etc.)
func (a *authorizer) isTarget(req *http.Request) bool {
	index := strings.Index(req.URL.Path, "/v2/")
	if index == -1 {
		return false
	}
	if req.URL.Host != a.url.Host || req.URL.Scheme != a.url.Scheme ||
		req.URL.Path[:index+4] != a.url.Path {
		return false
	}
	return true
}

View on GitHub (pinned to 7b2fd08cc5)

When it happens

Trigger: Thrown at src/pkg/registry/auth/authorizer.go:137 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of goharbor/harbor@7b2fd08cc5 (2026-08-16). Data as JSON: /api/errors/1997b5c66a3c19aa. Report an issue: GitHub.