Replica Count recomendation

[arkady69]

Just wrote a kubebuilder based k8s CRD/operator. The deployment manifest generated by kubebuilder sets the replica count to 1

Is it common/typical to increase the replica count in production envs to 2, or 3?

Thank you in advance

[camilamacedo86]

Hi @arkady69

Yes — it’s common.

• 2 replicas → basic HA
• 3 replicas → critical operators

Kubebuilder uses leader election, so only one pod is active; others standby.

Leader election is configured in main.go:

kubebuilder/testdata/project-v4/cmd/main.go

Lines 167 to 169 in f928162

	HealthProbeBindAddress: probeAddr,
	LeaderElection: enableLeaderElection,
	LeaderElectionID: "da1d9c86.testproject.org",

Docs:

• Controller-runtime leader election
• Kubernetes HA Operators Guide

So, I am closing it as solved
I hope that answered your question

[arkady69]

yes. thank you very much!!