Building a pet store operator
In this section, we will build on the background information we learned in the previous section about CRDs, operators, and controllers to implement our own operator. This operator will have only one CRD, Pet, and only one controller to reconcile those Pet resources. The desired state of Pet will be reconciled to our pet store service, which we used in previous chapters.
As we discussed in the previous section, this will be an example of using Kubernetes control loops to reconcile the state of a resource that has no dependency on other resources within Kubernetes. Remember, you can model anything in CRDs and use Kubernetes as a tool for building robust APIs for any type of resource.
In this section, you will learn to build an operator from scratch. You will define a new CRD and controller. You will examine the build tools and the different code generation tools used to eliminate the majority of boilerplate code. You will deploy your controller and...
