orchestration

Task 1

1. Go to the compose directory, execute docker-compose up and go to localhost:5000. As you refresh the page, the number is being increased.
2. Parametrize the application to be executable in any environment with Redis installation.
3. Rename the service redis to db.

Task 2

1. Go to the marathon directory, execute docker-compose up and go to localhost:8080.
2. Check that marathon-lb works.
3. Schedule a new application named test - it's created from nginx image. Expose its TCP port 80 (bridge network).
4. Check in marathon-lb that there is a new item related to the created service.
5. Find out where the application is running (show the nginx page in your browser).
6. Scale the application to 2 instances and try to reach both instances.

Hint: The Docker container created by Marathon is running on the same Docker host as the Mesos/Marathon, and docker ps is your friend.