kube-ps1 is a shell prompt plugin that displays your current Kubernetes context and namespace in bash, zsh, and fish shells.
The tool solves the problem of losing track of which Kubernetes cluster and namespace you are working with when using kubectl. It works by querying the kubectl configuration to extract the active context and namespace, then injecting this information into your shell prompt so it is always visible. This prevents accidental operations against the wrong cluster or namespace.
The tool suits operators, site reliability engineers, and developers who work with multiple Kubernetes clusters or frequently switch between namespaces. It is particularly valuable in environments where mistakes about cluster identity carry high risk. Installation is straightforward through multiple channels including Homebrew, the AUR, Oh My Zsh, and direct sourcing from git. The tool also supports OpenShift by allowing you to use the oc command instead of kubectl. The README mentions kubectx and kubens as complementary utilities for fast cluster and namespace switching, and notes that a separate tmux port exists for users who prefer tmux status lines.
Development activity shows consistent maintenance with automated testing via continuous integration workflows. The project accepts contributions and maintains compatibility across three different shell environments, indicating active support for the tool's core use cases.
