Docker: Connectivity between Physical Machine – VM -Docker container
I have just started to have some experimentation with docker.
On my Windows host I have a virtual machine which holds a docker container. I want to have a communication between host and container or may be other VMs and this container.
- Host ip is 192.168.2.10 with subnet mask 255.255.255.0
- VM ip is 192.168.254.130 with subnet mask 255.255.255.0
- Container gets an ip 172.17.0.13
I have seen few blogs talking about bridging but I am still not sure about it and how to do that. I am not very much into networking stuff.
A little guidance will help.
I followed this bridge-building but could not understand what ip range to give to bridge, so, I gave 192.168.254.1/24. The command
ip addr show bridge0 shows
2 Solutions collect form web for “Docker: Connectivity between Physical Machine – VM -Docker container”
I’ll assume you are using Docker on Windows with Linux host running on Virtualbox. Note that by default
docker-machine creates a NAT adapter (with a port forward) and a host-only adapter, sometimes it is tricky to get different machines to talk to the correct ip.
As answered by Adrian you typically “publish” ports by port forwarding, but if your container has to communicate via many ports and you are only running one such container / host it could be easier to start the container via
docker run --net host ..., this way host’s ethernet adapters are directly visible within the container (as I discovered here).
The normal way to do this is just to publish a port on the container and use the IP of the VM e.g:
docker run -d -p 80:80 nginx
Then visit the IP of the VM in a browser running on your host and you should get the webpage.