What Is Replicaset

A ReplicaSet’s purpose is to maintain a stable set of replica Pods running at any given time. As such, it is often used to guarantee the availability of a specified number of identical Pods.

What does a Kubernetes ReplicaSet do?

A ReplicaSet is a process that runs multiple instances of a Pod and keeps the specified number of Pods constant. Its purpose is to maintain the specified number of Pod instances running in a cluster at any given time to prevent users from losing access to their application when a Pod fails or is inaccessible.

What is the difference between ReplicaSet and replication controller?

The replica set are also known as next generation replication controller. The only difference between replica set and replication controller is the selector types. The replication controller supports equality based selectors whereas the replica set supports equality based as well as set based selectors.