ReplicaSets and Scaling

Deployments and ReplicaSets

We’ve repeatedly said that Deployments add self-healing, scaling, rollouts, and rollbacks. However, behind the scenes, it’s actually a different resource called a ReplicaSet that provides the self-healing and scaling.

The following figure shows the overall architecture of containers, Pods, ReplicaSets, and Deployments. It also shows how they map into a Deployment YAML.