Building a Lab for the Sample App

Let's walk through the process of building a lab to deploy our sample app.

There are a few prerequisites that need taking care of before deploying the app:

  • Swarm mode: We’ll deploy the app as a Docker Stack, and stacks require Swarm mode.
  • Labels: One of the Swarm worker nodes needs a custom node label.
  • Secrets: The app uses secrets that need pre-creating before it can be deployed.

Sample app

We’ll build a three-node Linux-based Swarm cluster that satisfies all of the application’s prereqs. Once we’re done, the lab will look like this.

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