The architecture of a Docker Swarm from a 30,000-foot view consists of two main parts—a raft consensus group of an odd number of manager nodes, and a group of worker nodes that communicate with each other over a gossip network, also called the control plane. The following diagram illustrates this architecture:
High-level architecture of a Docker Swarm
The manager nodes manage the swarm while the worker nodes execute the applications deployed into the swarm. Each manager has a complete copy of the full state of the Swarm in its local raft store. Managers synchronously communicate with each other and their raft ...
