Docker Swarm on Container Lab demo

If you used Using CentOS 7, KVM, and CoreOS to build a container lab and have a KVM host or two ready to go here is your first project: Docker Swarm.

In this 3 minute long screencast we will:

• Build three CoreOS container hosts
• Create a 3 node swarm (1 manager, 2 workers) on them
• Create a web app with 3 replicas
• Verify we can access the web app and it is load balanced by Swarm
• Scale up to 15 replicas
• Simulate failures by destroying the 2 worker nodes and verify the web app stays up
• Remove the last node as final clean up

The ascii screencast has no audio but allows copy/paste. Depending on your screen size you might want to go full screen to avoid missing some content.

Without further delay, here it is:

As always, comments are welcome!