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Use overlay companies

Thursday, November 21st, 2019

Use overlay companies

The network that is overlay produces a distributed system among multiple Docker daemon hosts.

This community sits together with (overlays) the host-specific sites, permitting containers attached to it (including swarm service containers) to communicate firmly. Docker transparently handles routing of each and every packet to and from the proper Docker daemon host while the proper location container.

Once you initialize a swarm or join a Docker host to a current swarm, two brand new systems are manufactured on that Docker host:

  • An network that is overlay ingress , which handles control and data traffic associated with swarm solutions. Whenever you produce a swarm solution and don’t link it up to a user-defined overlay system, it links into the ingress system by standard.
  • a docker_gwbridge , which links the Docker that is individual daemon one other daemons taking part in the swarm.

It is possible to produce user-defined overlay companies making use of docker network make , just as that one can produce user-defined connection companies. Services or containers could be linked to multiple system at the same time. Services or containers can simply communicate across systems they truly are each attached to.

Although you can link both swarm services and standalone containers to an overlay system, the standard actions and configuration issues will vary. (more…)