portainer/portainer · error

unable to determine resource type

Error message

unable to determine resource type

What it means

Error "unable to determine resource type" thrown in portainer/portainer.

Source

Thrown at pkg/libkubectl/apply_dynamic.go:173

// When dryRun is set the request is sent with dry-run=All, so the API server validates it without persisting it.
func (c *Client) applyResource(ctx context.Context, setup *applySetup, resourceYAML []byte, dryRun bool) (appliedResource, error) {
	var applied appliedResource

	obj := &unstructured.Unstructured{}
	decoder := yaml.NewYAMLOrJSONDecoder(strings.NewReader(string(resourceYAML)), 4096)
	if err := decoder.Decode(obj); err != nil {
		return applied, fmt.Errorf("failed to decode YAML: %w", err)
	}

	// Skip empty objects
	if obj.Object == nil {
		return applied, nil
	}

	// Get GVK (GroupVersionKind) from the object
	gvk := obj.GroupVersionKind()
	if gvk.Empty() {
		return applied, errors.New("unable to determine resource type")
	}

	applied.Kind = gvk.Kind
	applied.Name = obj.GetName()

	// Map GVK to GVR (GroupVersionResource)
	mapping, err := setup.mapper.RESTMapping(gvk.GroupKind(), gvk.Version)
	if err != nil {
		return applied, fmt.Errorf("failed to map resource type %s: %w", gvk.String(), err)
	}

	// Get the dynamic resource client
	var resourceClient dynamic.ResourceInterface

	if mapping.Scope.Name() == meta.RESTScopeNameNamespace {
		namespace, err := resolveNamespace(setup.configuredNamespace, obj.GetNamespace())
		if err != nil {
			return applied, fmt.Errorf("namespace conflict for %s %q: %w", gvk.Kind, applied.Name, err)

View on GitHub (pinned to 17e74456ff)

When it happens

Trigger: Thrown at pkg/libkubectl/apply_dynamic.go:173 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of portainer/portainer@17e74456ff (2026-08-26). Data as JSON: /api/errors/f327fa3653f3e47b. Report an issue: GitHub.