Puppet Docker Clustering Docker Engines - Swarm Mode

Question

How can I cluster my docker engines to work in swarm mode via puppet resources?

Answer 1

To manage a cluster of Docker Engines known as a swarm, Docker Engine 1.12 includes a swarm mode.

To cluster your Docker engines, use one of the following Puppet resources:

• Swarm manager

• Swarm worker

Swarm manager:

• To configure the swarm manager, add the following code to the manifest file:

docker::swarm {'cluster_manager':
  init           => true,
  advertise_addr => '192.168.1.1',
  listen_addr    => '192.168.1.1',
}

• For a multihomed server and to enable cluster communications between the node, include the advertise_addr and listen_addr parameters.

Swarm worker

• To configure the swarm worker, add the following code to the manifest file:

docker::swarm {'cluster_worker':
join           => true,
advertise_addr => '192.168.1.2',
listen_addr    => '192.168.1.2',
manager_ip     => '192.168.1.1',
token          => 'your_join_token'
}

• To configure a worker node or a second manager, include the swarm manager IP address in the manager_ip parameter.

• To define the role of the node in the cluster, include the token parameter. When creating an additional swarm manager and a worker node, separate tokens are required.