ahmetb/kubectx · error

"contexts" entry is nil

Error message

"contexts" entry is nil

What it means

Guard error in Kubeconfig.ModifyContextName: contextNodeWithFileIndex located the context entry, but the returned node is nil — the 'contexts' list entry for the old name has no YAML node to rename. This is a defensive check against a malformed or empty contexts entry before applying the kyaml rename.

Source

Thrown at internal/kubeconfig/contextmodify.go:55

		},
	)
}

// ModifyCurrentContext always writes to the first file (matching kubectl behavior).
func (k *Kubeconfig) ModifyCurrentContext(name string) error {
	if len(k.files) == 0 {
		return errNoFiles
	}
	return k.files[0].config.PipeE(yaml.SetField("current-context", yaml.NewScalarRNode(name)))
}

func (k *Kubeconfig) ModifyContextName(old, new string) error {
	context, _, err := k.contextNodeWithFileIndex(old)
	if err != nil {
		return err
	}
	if context == nil {
		return errors.New("\"contexts\" entry is nil")
	}
	return context.PipeE(yaml.SetField("name", yaml.NewScalarRNode(new)))
}

View on GitHub (pinned to 12ad6fb22e)

Solutions

1. Inspect the kubeconfig with `kubectl config view` for a malformed 'contexts' entry
2. Remove and re-add the broken context entry, then retry the rename

When it happens

Trigger: Thrown at internal/kubeconfig/contextmodify.go:55 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/eb52f17ad2846728. Report an issue: GitHub.