Multi Host : Docker Networking

Say we have two hosts, how docker containers can connect to each other in this Docker cluster if both interfaces:

  • docker0
  • docker_gwbridge

have the same IP address in each host ?

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  • One Solution collect form web for “Multi Host : Docker Networking”

    Those networks are bridge networks that only exist on a single docker host. Containers assigned to only these networks will not be able to talk to containers on other hosts.

    Multi-host networking is done with an “overlay” network and will show up with that driver instead of “bridge”. The overlay driver relies on a global key/value store, such as consul, etcd, and it’s now built into swarm with the raft backend. Assigning IP’s is done by referencing this global key/value store so they should always be unique.

    For more details, see: https://docs.docker.com/engine/userguide/networking/get-started-overlay/

    Docker will be the best open platform for developers and sysadmins to build, ship, and run distributed applications.