Summary
In this chapter, we took a look at the clustering methods for Docker environments that enable setting up the complete staging/production/Jenkins environment. Here are the key takeaways from the chapter:
- Clustering is a method of configuring a set of machines in a way that, in many respects, can be viewed as a single system
- Docker Swarm is the native clustering system for Docker
- Docker Swarm clusters can be dynamically configured using built-in Docker commands
- Docker images can be run and scaled on the cluster using the docker service command
- Docker Stack is a method to run the Docker Compose configuration on a Swarm cluster
- The most popular clustering systems that support Docker are Docker Swarm, Kubernetes, and Apache Mesos
- Jenkins agents can be run on a cluster using the dynamic slave provisioning or the Jenkins Swarm plugin
In the next chapter, we will describe the more advanced aspects of the Continuous Delivery process and present the best practices for building pipelines
