At Appsembler, we've built a system to deploy personalized learning labs using Docker Swarm. Each learning lab consists of arbitrary software running in a Docker container, so each student can have their own isolated environment to learn and experiment. The containers can be paired with another container running the Cloud9 IDE, allowing students to modify code and see the results in real time without the need to install anything on their own system. Our system uses Docker Swarm to deploy and manage containers. To ensure the system is robust, we have automatic failover between Swarm managers (known as high availability). We'll discuss how we're using Consul to implement a highly available Swarm cluster, as well as other features of Swarm that we're using.

1. Virtual Learning Labs Using Docker
Nate Aune &
Brian Dant
CEO & Software Engineer,
Appsembler

2. 1. Story
Agenda
2. Problem 3. Solution

3. The Story
How Wharf Came to Be

4. • Configurable
• Zero friction
• Disposable
Requirements
• Transparent
• Scalable
• Replicable

5. Requirement 1:
Configurable

6. Requirement 2:
Zero Friction

7. Requirement 3:
Disposable

8. Requirement 4:
Transparent

9. Requirement 5:
Scalable

10. Requirement 6:
Replicable

11. • Django +
React.js
• Docker
Solution
• Consul
• Docker
Swarm
• Hipache

12. Tracking a
Request

13. Admin User

14. Admin User

15. Student

16. Student

17. Request Diagram

18. Django +
React.js

19. Docker

20. Docker Swarm

21. Consul (and
Hipache)

22. Docker

23. Final Recap

24. Q & A

25. Thank you!

27. Slide subtitle if needed
The quick brown fox jumps over the lazy
dog. The quick brown fox jumps over the
lazy dog. The quick brown fox jumps over
the lazy dog.
• Bulleted list one
• List item two
• And item number three
Body Slide

28. Slide subtitle if needed
The quick brown fox jumps over the lazy
dog. The quick brown fox jumps over the
lazy dog. The quick brown fox jumps over
the lazy dog.
• Bulleted list one
• List item two
• And item number three
Alt Background Body Slide

29. Demo Slide
~/src/docker/expressApp$ docker build -t chrisdias/
expressapp
Sending build context to Docker daemon 72.18mb
Step 0 : FROM node:latest
–––> 8e20baae42c8
Step 1: COPY . /src
–––> 8e20baae42c8
Removing intermediate container afdcd49c779
Step 0 : FROM node:latest
–––> 8e20baae42c8
Step 1: COPY . /src
–––> 8e20baae42c8

30. “Quote Slide!”
— Moby