kube-tmuxp

Tool to generate tmuxp configs that help to switch between multiple Kubernetes contexts safely.

Introduction

When working with multiple Kubernetes clusters its painful to switch context using kubectl or kubectx. There are also possibilities of making unintentional changes.

kube-tmuxp solves this by using one preconfigured tmux session per Kubernetes cluster. Each tmux session contains only one Kubernetes context thus preventing accidental context switching inside a session. Contexts can be switched by switching tmux sessions. For example: [tmux prefix] + S.

Given a config similar to config.sample.yaml, kube-tmuxp generates:

• kube config (Kubernetes context) for each Kubernetes cluster under ~/.kube/configs
• tmuxp config for each Kubernetes cluster under ~/.tmuxp

The generated tmuxp configs can be used to start preconfigured tmux sessions.

Prerequisites

• gcloud
• kubectl
• tmux
• tmuxp

Install

Homebrew

brew tap thecasualcoder/stable
brew install kube-tmuxp

Manual

git clone https://github.com/thecasualcoder/kube-tmuxp.git
cd kube-tmuxp
make build
cp ./out/kube-tmuxp /usr/local/bin/kube-tmuxp

Generate kubeconfigs and tmuxp configs

• Copy the sample config (config.sample.yaml)

  cp config.sample.yaml ~/.kube-tmuxp.yaml
  

• Add your projects and clusters to the copied config

• Generate kubeconfigs and tmuxp configs

kube-tmuxp gen

Default config path is $HOME/.kube-tmuxp.yaml. If you are using a different path, then use the --config flag to specify that path. Refer kube-tmuxp --help for more details.

Start a session

tmuxp load my-context-name

Now you will be inside a tmux session preconfigured with Kubernetes context my-context-name.

Handy bash functions

Use the bash functions available here to switch, kill sessions easily. Special thanks to @jskswamy for writing these awesome functions.

Limitations

• Currently works for Google Kubernetes Engine (GKE) only. However, it can be extended to work with any Kubernetes clusters. Feel free to submit a PR for this.