Summary

In this chapter, you learned that Deployments are a great way to manage Kubernetes apps. They build on top of Pods by adding self-healing, scalability, rolling updates, and rollbacks. Behind the scenes, they leverage ReplicaSets for the self-healing and scalability parts.

Like Pods, Deployments are objects in the Kubernetes API, and you should work with them declaratively.

When you perform updates with the kubectl apply command, older versions of ReplicaSets get wound down, but they stick around making it easy to perform rollbacks.