Docker Networking Cookbook

Connecting containers in host mode

All the configurations we have done up until this point have relied on using the docker0 bridge to facilitate connectivity between containers. We've had to consider port mappings, NATing, and container connection points. These considerations had to be made because of the nature of how we connect and address containers and to ensure a flexible deployment model. Host mode takes a different approach and binds containers directly to the Docker host's interfaces. This not only removes the need for inbound and outbound NAT but also restricts how we can deploy containers. Since the containers will be in the same network construct as the physical host, we cannot overlap service ports as this would cause a conflict. In ...