kubebuilder

Showing how to build kubebuilder kubernetes operator

Prerequisites

• A kubernetes cluster (locally or from a cloud service)
  • Kind (https://kind.sigs.k8s.io/)
  • K3d ()https://k3d.io/
  • Microk8s (https://microk8s.io/)
  • Minikube (https://minikube.sigs.k8s.io/)
• Golang (https://go.dev)
  • Other sdks: https://kubernetes.io/docs/reference/using-api/client-libraries/
• Kubebuilder (https://kubebuilder.io)

Initialize kubebuilder project

kubebuilder init --domain <your domain> --repo <your domain>/<module-name>

ex:

kubebuilder init --domain a-cool-name.io --repo a-cool-name.io/k8s

Add a kubebuilder api with custom resource definition (CRD)

kubebuilder create api --group task --version v1 --kind Backup

Build

make

Create CRD file

make manifests

Install CRD in cluster:

Either install with the makefile: make install

Or

kubectl: kubectl apply -f ./config/crd/bases/tasks.a-cool-name.io_backups.yaml