image-clone-controller

Table of Contents

• Overview
• Project Structure
• Prerequisites
• How to
  • Run the controller
  • Run the unit tests

Overview

It's an implementation of a controller which watches the applications and “caches” the images by re-uploading to our own registry repository and reconfiguring the applications to use these copies.

Project Structure

• Dockerfile - Dockerfile, used for production to run within the cluster (running the application as nonroot)
• controller - controller code, it is written using kubebuilder
• repository - code that enables connecting to the repository on which the images will be re-uploaded
• config - yml files that enable running the controller within the cluster

Prerequisites

Make sure you have installed all of the following prerequisites on your development machine:

• Git - Download & Install Git. OSX and Linux machines typically have this already installed.
• Minikube - Download & Install Minikube
• Docker - Download & Install Docker. Docker is used for building images and running the end-to-end tests.
• Golang - Download & Install Golang.

How to

Run the controller

In order to run, you have to provide the dockersecret.yml file located in ~/.docker/config.json Then to run the controller you can simply use:

minikube start
make deploy_app

It will automatically deploy the controller on local cluster eg. Minikube.

Run the unit tests

In order to run the unit tests, run:

minikube start
make test

Asciinema proof of the controller working!