Questions

To assess your learning progress, please try to answer the following questions:

1. In a few simple sentences, explain to an interested lay person what zero-downtime deployment means.
2. How does SwarmKit achieve zero-downtime deployments?
3. Contrary to traditional (non-containerized) systems, why does a rollback in Docker Swarm just work? Explain this in a few short sentences.
4. Describe two to three characteristics of a Docker secret.
5. You need to roll out a new version of the inventory service. What does your command look like? Here is some more information:
   • The new image is called acme/inventory:2.1
   • We want to use a rolling update strategy with a batch size of two tasks
   • We want the system to wait for one minute after each batch
6. You need to update an existing service named inventory with a new password that is provided through a Docker secret. The new secret is called MYSQL_PASSWORD_V2. The code in the service expects the secret to be called MYSQL_PASSWORD...