Kubernetes and other Docker tools

When we enabled Kubernetes, we selected the Deploy Docker Stacks to Kubernetes by default option. If you recall, in Chapter 8, Docker Swarm, we used the docker stack command to launch our Docker Compose files in Docker Swarm and, as you might have guessed, running those same commands will now launch our stack in our Kubernetes cluster.

The Docker Compose file we used looked like the following:

version: '3'
services:
  cluster:
    image: russmckendrick/cluster
    ports:
      - '80:80' deploy:
    replicas: 6
    restart_policy:
      condition: on-failure
    placement:
      constraints:
        - node.role == worker

Before we launch the application on Kubernetes, we need to make a...