Kubectl

Attend a sig-cli meeting

The best way to get started is to attend sig-cli meetings. The bug scrub is a great place to pick up an issue to work on.

Checking out the code

Install golang

Install the latest version of go

Get a copy of the code

Fork and clone the kubernetes repository

git clone git@github.com/USER/kubernetes
cd kubernetes

Build the binary

Build the binary using go build

cd cmd/kubectl
go build -v
./kubectl version

Edit the code

The kubectl code is under staging/src/k8s.io/kubectl.

• Libraries are under staging/src/k8s.io/kubectl/pkg
• Command implementations are under staging/src/k8s.io/kubectl/pkg/cmd

Learning about libraries

Kubectl uses a number of common libraries

• cobra – a golang framework for CLIs
• client-go – libraries for talking to the Kubernetes apiserver
• api – Kubernetes types
• apimachinery – Kubernetes apimachinery libraries

Additional resources

• Everything You Always Wanted to Know About SIG-CLI but Were Afraid to Ask

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