steps.md

The operator was created following the steps documented under the operator-sdk user-guide.

The steps specific to the wavefront operator are captured here:

1. Install the operator-sdk

2. Create a new wavefront-operator project:

$ cd  $HOME/dev
$ operator-sdk new wavefront-operator --repo=github.com/wavefronthq/wavefront-operator
$ cd wavefront-operator

3. Add a new CRD for the collector:

$ operator-sdk add api --api-version=wavefront.com/v1alpha1 --kind=WavefrontCollector

4. Manually modify the spec and status at /pkg/apis/wavefront/v1alpha1/wavefrontcollector_types.go Run operator-sdk generate k8s after modifying the spec and status.

5. Run operator-sdk generate openapi to update the OpenAPIValidation section in the CRD. This updates the CRD based on latest spec / status mentioned in /pkg/apis/wavefront/v1alpha1/wavefrontcollector_types.go

6. Add a new controller for the collector

operator-sdk add controller --api-version=wavefront.com/v1alpha1 --kind=WavefrontCollector

Flesh out the controller logic as relevant to the CRD.

7. Build the docker image:

operator-sdk build ${REPO_NAME}/wavefront-operator:latest

8. Deploy the operator:

$ ka -f deploy/crds/wavefront_v1alpha1_wavefrontcollector_crd.yaml
$ ka -f deploy/service_account.yaml
$ ka -f deploy/role.yaml
$ ka -f deploy/role_binding.yaml
$ ka -f deploy/operator.yaml

9. Now deploying a wavefrontcollector CR should create pods for the collector:

ka -f deploy/crds/wavefront_v1alpha1_wavefrontcollector_cr.yaml