conplementag/cops-controller repository overview

⁠cops controller

⁠Introduction

This is the Kubernetes Controller implementation for Conplement CoreOps specific Kubernetes extensions. Can be seen as a backend to the companion project copsctl⁠

This project is "based" on metacontroller⁠ and written in C#, mainly for three reasons:

• Metacontroller is the simplest custom controller approach in Kubernetes, and offers easy parent / child resource tracking
• Metacontroller integrates with "business" code via webhooks, which leaves us free to select any language for the implementation
• Azure Dev Spaces⁠, an excelent tool for development / debugging in Kubernetes, works at the moment the best with C#

⁠Setup

Check the instructions on the release page⁠.

⁠Development

For developing, we use Visual Studio Code and Azure Dev Spaces (running inside our CoreOps clusters).

1. Create / update your cops cluster to the latest state. Metacontroller, which is required for this controller to work, is delivered out of the box.

2. Install / setup Azure DevSpaces on your cluster, incl. your DevSpace

az aks use-dev-spaces -g ... -n ... --space space_name

If the command above fails (like to linux), then you can use the azds controller create -tn ... -n ... -g ... command instead.

Install the Azure DevSpaces CLI and run: azds space select --name your_space_name

1. Deploy the custom resource definitions kubectl apply -f deployment/crds

2. Install / setup Visual Studio Code with following extensions:

   • C#
   • Docker
   • NuGet Package Manager
   • Azure Dev Spaces

   Also, you might have issues with C# and .NET Core unless you install the dotnet core build tools as well: https://github.com/OmniSharp/omnisharp-roslyn/issues/1311#issuecomment-428361674⁠

3. Run donet restore / dotnet build and you are ready to go. For Azure DevSpace, either run azds up or simply start debugging through VS Code (launch configuration for Azure DevSpaces is included with the repository).

Hints on development:

• When running inside Kubernetes, follow both metacontroller and this container logs. Metacontroller logs can be reached via kubectl logs metacontroller-0 -n metacontroller -f or a similar command.

⁠Creating a new release

Release is created by starting the Azure DevOps release pipeline. Follow the instructions documented in the pipeline itself.