docker not exposing the port with network host

I am trying to run a docker container listening on port 5555, the image is built with EXPOSE 5555 in Dockerfile and I am running the container as below

$ docker run -d --name controler -p 5555:5555  -v /var/run/docker.sock:/var/run/docker.sock --net=host  my_image:latest

The container starts fine but the ports are not exposed, running docker port returns an error message

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  • $ docker port controler 5555
    Error: No public port '5555/tcp' published for controler
    

    If I run the container without --net=host , the ports are exposed and I can access the container.

    Any idea or hints on what is really happening here is appreciated.

    Note: I am using the latest docker for mac beta Version 1.12.0-beta21
    (build: 11019) on my mac running el capitan

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  • One Solution collect form web for “docker not exposing the port with network host”

    --net=host option

    This option bind the virtual NIC of the container to the host physical NIC (by giving full access to local system services such as D-bus).

    When this option is used every program that request a network socket will be granted one by the host from the physical NIC. Your service will then be using the 5555 port as expected.

    -p 5555:5555 option

    This option bind (through iptable-like mechanism) the network socket containter-ip:5555 to the network socket host-ip:5555.


    In other words

    It seems, IMHO, a bit illogical to use them both. If the needs is to publish the containerized service to the socket host-ip:5555 then the cleanest way is to only use the -p 5555:5555 option.

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