kube-controller-demo

README

Demo Controller

Goal

The goal of this project is to demonstrate how you can build a simple Kubernetes controller.

This is not meant as a project to be used directly - but rather as a reference point to build your own custom controllers.

This example is currently based off client-go v0.19.4

Helpful Resources

• Upstream controller development and design principles

  • https://github.com/kubernetes/community/blob/master/contributors/devel/controllers.md
  • https://github.com/kubernetes/community/blob/master/contributors/design-proposals/principles.md#control-logic

• Upstream Kubernetes controller package

  • https://github.com/kubernetes/kubernetes/tree/release-1.6/pkg/controller

• client-go examples (version sensitive, e.g. use v3 examples with v3 checkout)

  • https://github.com/kubernetes/client-go/tree/v3.0.0-beta.0/examples

• Creating Kubernetes Operators Presentation (@metral)

  • http://bit.ly/lax-k8s-operator

• Memcached operator written in python (@pst)

  • https://github.com/kbst/memcached

Roadmap

• Demonstrate using
  • leader-election
  • Third Party Resources
  • Shared Informers
  • Events

Building

Build agent and controller binaries:

make clean all

Build agent and controller Docker images:

make clean images