Docker Swarm
Docker Swarm is a native orchestration tool from Docker itself. It manages a pool of Docker hosts and turns them into a single virtual Docker host. Docker Swarm provides a standard Docker API to manage containers on the cluster. It's easy for users to move to Docker Swarm if they are already using Docker to manage their containers.
Docker Swarm follows a swap, plug, and play principle. This provides pluggable scheduling algorithms, a broad registry, and discovery backend support in the cluster. Users can use various scheduling algorithms and discovery backends as per their needs. The following diagram represents the Docker Swarm architecture:
Docker Swarm components
The following sections explain the various components in Docker Swarm.
Node
Node is an instance of the Docker host participating in the Swarm cluster. There can be one or multiple nodes in a single Swarm cluster deployment. Nodes are categorized into Manager and Worker based on their roles in the system.
Manager node
The...
