Summary

This chapter explored different ways to automate the infrastructure that is used to run a Docker cluster. It looked at using configuration management while a node is running, configuring a node at boot with Cloud-Init, and building custom images with Packer. We also covered using Terraform and Docker Cloud to manage a cluster. Finally, some tips were shared for deprovisioning nodes when they are no longer needed.

Where you go next is up to you. This book has provided an introduction to Docker Orchestration using several tools. Successfully running a Docker cluster requires a number of different services including registries, overlay networks, shared storage, the orchestration tool itself, log and resource monitoring, and continuous integration. The specific tools and work flows will vary from cluster to cluster. This book was only able to scratch the surface of what is possible. Hopefully, you will be able to take what you have learned here and use it to build a scalable, reliable...