A comprehensive guide to building Kubernetes operators using Go and the controller-runtime library. The tutorial walks through creating a custom DatabaseMigration operator called kube-shift, covering project scaffolding with Kubebuilder, defining Custom Resource Definitions (CRDs), implementing the reconciliation loop, and
Table of contents
The "Why": What Problem Do Operators Solve?Setting the Stage: Project Scaffolding with KubebuilderDefining Our Custom Resource: The DatabaseMigration CRDThe Heart of the Operator: The Controller and Reconciliation LoopConclusionSort: