Rolling Updates

Application updates are a fact, and for the longest time, they were painful. Fortunately, thanks to Docker services, updating well-designed microservices apps is easy.

Terminology: We use terms like rollouts, updates, and rolling updates to mean the same thing— updating a live application.

Creating an overlay network

You’re about to deploy a new service to help demonstrate a rollout. However, before doing that, you’ll create a new overlay network for the service. This isn’t necessary, but we want you to see how to attach services to networks.

Run the following two commands to create a new overlay network called uber-net and then check if it exists.