ReplicaSets in Kubernetes

Planted .

ReplicaSets are a level up from Pods in Kubernetes. They are a type of controller (replication-controller) which we use to ensure a certain number of pods are live.

It is part of apps/v1 with kind of ReplicaSet.

It is different from the previously used ReplicationController in that we need to define a selector in it’s definition file.

Updated October 15, 2026 at 20:53 . Thoughts? Email me.

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Kubernetes Deployment TIL

This is a higher level object, one-level up from ReplicaSets. They provide more functionalities and handle more use cases like rolling upgrades, pause deployments, etc.