Introduction to Operators

To begin with, we’ll cover the recommended course prerequisites, who this course is for and an overview of what to expect from this course.

In this lesson, learn what an Operator is and how a custom Operator mirrors the Operator model in Kubernetes itself.

In this lesson, we’ll dive into custom resources, what they are and how you can use them to extend the Kubernetes API.

In this lesson, you will learn how you can reconcile state for custom resources using custom controllers. We will look at the core controllers in the Kubernetes control plane and learn lessons from their design that will inform how we design custom controllers.

Seeing operators in action will help illustrate the utility value of this kind of tool.

In this lesson we demo the Postgres Operator to show how after installed, development teams can submit a CRD object to have Postgres deployed in their namespace.

In this lesson we demo the Cert Manager to show how after installed, the lifecycle of managing certificates in a Kubernetes cluster is automated.

In this lesson we demo the Prometheus Operator to show how after installed, development teams can automatically have their applications automatically monitored by Prometheus.

This lesson will detail building an operator using Kubebuilder. We’ll cover some design considerations, talk about the tooling options and then walk through the actual implementation.

This summary will tie the lessons together by reviewing what we covered during this course.