Chapter 4. Orchestration with Docker Swarm
Docker Swarm is the native orchestration tool for Docker. It was rolled into the core Docker suite with version 1.12. At its simplest, using Docker Swarm is just like using Docker. All of the tools that have been covered still work. Docker Swarm adds a couple of features that make deploying and updating services very nice. You got a glimpse of them in Chapter 3, Cluster Building Blocks – Registry, Overlay Networks, and Shared Storage, which covered Docker overlay networks. Now it is time to dive into the details.
The following topics are covered in this chapter:
- Creating a swarm
- Adding and removing nodes
- Changing node availability
- Swarm disaster recovery
- Grouping nodes with labels
- Creating and stopping services
- Creating replicas
- Using global services
- Using constraints
- Zero downtime upgrades with rolling updates
- Using Docker Compose with swarm
- Using Docker Datacenter
