Docker Swarm

Docker swarm

A swarm is a set of nodes that are either physical or virtual servers. Each swarm must have at least one manager node that manages the service and delegates tasks to the worker nodes. A service can be run by a single container or multiple containers. The container image that is to be used is specified when creating a service.

If you’ve not previously used Swarm, the following command returns a report, which also contains a line saying Swarm: inactive.

docker system info

Execute the following command to define your machine as the swarm manager:

docker swarm init

The result would be similar to this:

Swarm initialized: current node

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