ahmetb/kubectx · error

failed to extract kubeconfig for context: %w

Error message

failed to extract kubeconfig for context: %w

What it means

Wraps the failure of extractMinimalKubeconfig (the kubectl config view subprocess) when producing the flattened per-context kubeconfig for the isolated shell. The kubectl invocation for the target context failed; see the inner error for exit status/output.

Source

Thrown at cmd/kubectx/shell_session.go:64

	if err := kc.Parse(); err != nil {
		return fmt.Errorf("kubeconfig error: %w", err)
	}
	exists, err := kc.ContextExists(s.target)
	if err != nil {
		return fmt.Errorf("failed to check context: %w", err)
	}
	if !exists {
		return fmt.Errorf("no context exists with the name: %q", s.target)
	}
	previousCtx, err := kc.GetCurrentContext()
	if err != nil {
		return fmt.Errorf("failed to get current context: %w", err)
	}

	// Extract minimal kubeconfig for the target context.
	data, err := extractMinimalKubeconfig(kubectlPath, s.target)
	if err != nil {
		return fmt.Errorf("failed to extract kubeconfig for context: %w", err)
	}

	// Optionally transform the kubeconfig (e.g. rewrite for readonly proxy).
	var cleanup func()
	if s.transformKubeconfig != nil {
		data, cleanup, err = s.transformKubeconfig(data)
		if err != nil {
			return err
		}
		if cleanup != nil {
			defer cleanup()
		}
	}

	// Write kubeconfig to temp file.
	tmpFile, err := os.CreateTemp("", "kubectx-shell-*.yaml")
	if err != nil {
		return fmt.Errorf("failed to create temp kubeconfig file: %w", err)

View on GitHub (pinned to 12ad6fb22e)

Solutions

1. Run kubectl config view --minify --flatten --context <target> manually to reproduce
2. Refresh or fix credentials for the target context
3. Ensure the KUBECTL env var, if set, points to a working kubectl binary

When it happens

Trigger: Thrown at cmd/kubectx/shell_session.go:64 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of ahmetb/kubectx@12ad6fb22e (2026-09-02). Data as JSON: /api/errors/5ceec646de47f704. Report an issue: GitHub.