Kubernetes Custom Resouce

Creating a custom resource with Kubebuilder

Project Creation

Initialize the project in $GOPATH/src/...

$ kubebuilder init --domain raker22.com

Create APIs

$ kubebuilder create api --group foo --version v1 --kind Foo
$ kubebuilder create api --group foo --version v1 --kind FooReplicaSet

Configuration

• Add properties to types
• Install custom resource definitions (CRDs)
• Update controllers with desired behavior
• Create and apply sample resources to see how the controllers behave

Running the Manager

• Connect to the kubernetes cluster you want to run the manager on.
• Run make run to start the manager on the cluster.
• In another terminal run kubectl apply -f config/samples/<group>-<version>-<kind>.yaml to create a sample resource.
  • group, version, and kind are the lower case group, version, and kind from kubebulder create api above.