Puppet Docker Managing Docker networks

Question

I have a two containers running on different Docker hosts and to enable communication between them i need to configure an overlay network. Is this supported in puppet+docker integration? How do i manage networks in this case? Suggestions would be of great help.

Answer 1

• To expose the docker_network type that is used to manage networks, add the following code to the manifest file:

docker_network { 'my-net':
  ensure   => present,
  driver   => 'overlay',
  subnet   => '192.168.1.0/24',
  gateway  => '192.168.1.1',
  ip_range => '192.168.1.4/32',
}

• The name value and the ensure parameter are required.

•  If you do not include the driver value, the default bridge is used. 

• The Docker daemon must be configured for the overlay network.

• To configure the cluster store, update the docker class in the manifest file:

extra_parameters => '--cluster-store=<backend>://172.17.8.101:<port> --cluster-advertise=<interface>:2376'

• A defined network can be used on a docker::run resource with the net parameter.