Native Docker Clustering with Swarm

Summary

In this chapter, we started working on the application stack and deploying real things on Swarm. We did some practice in defining Swarm services and we launched a cluster of nginx, as well as a load-balanced WordPress on a dedicated overlay network. Then, we moved on to something more real: Apache Spark. We deployed Spark on Swarm at a small scale, by defining our own scheduling strategies. We are going to expand Swarm and scale it to a bigger size, with more real storage and networking options, in Chapter 7, Scaling Up Your Platform.