feature request: calico-apiserver PodDisruptionBudget

[dpiddock]

No PodDisruptionBudget is created for the calico-apiserver deployment.

Expected Behavior

PodDisruptionBudget created for calico-apiserver, similar to the calico-typha deployment.

Current Behavior

No PDB

Possible Solution

Generate a PodDisruptionBudget when creating the Deployment

Steps to Reproduce (for bugs)

1. Install operator
2. kubectl -n calico-apiserver get pdb
3. no result

Context

The calico-apiserver deployment is configured with 2 replicas. To avoid service interruption when replacing a lot of nodes at once (e.g. during version upgrade) the deployment should be configured with a PodDisruptionBudget. Similar to the calico-typha deployment.

Your Environment

• Operating System and version: AWS EKS Kubernetes 1.26
• Link to your project (optional):

Thank you

[MuhtasimTanmoy]

I would like to work on this issue.

[MuhtasimTanmoy]

Requesting review for #2940.

Would like to mention one issue for testing though.

When applying this command.
kubectl create -f ./config/samples/operator_v1_apiserver.yaml

It was failing to pull calico/apiserver:master or calico/apiserver:latest from docker.
Though calico/apiserver:master-amd64 worked in my case.

So I changed the version to master-amd64 to make it work though it is not included in pull request.

operator/pkg/components/calico.go

Line 92 in 077f748

Version: "master",