Jan 7, 2018 - Docker for Mac now ships with Kubernetes built-in! Docker for Mac/Windows or DfM was pitched as a 'native'. Getting VM IP address.
Thanks for your report.
At the moment it's not easy in Docker for Mac to connect to the internal IP addresses used by containers, because they're exposed in a tiny VM rather than on the host. Ideally specific ports should be published with
docker run -p
which sets up a tunnel from the Mac to the VM. However if that doesn't work or is impractical for your use-case, then perhaps you could try this experimental build which contains a SOCKS server:![Change Change](https://docs.docker.com/docker-for-mac/images/menu/prefs-reset.png)
It reports its version as
Version 18.03.0-ce-rc2-mac56 (23206)
Channel: pr
52ea5bcc41
Channel: pr
52ea5bcc41
To enable the proxy first shutdown the app, then enable the experimental SOCKS
server on port 8888: (this requires the
server on port 8888: (this requires the
jq
tool available from homebrew)![Docker For Mac Ip Address Docker For Mac Ip Address](/uploads/1/2/5/2/125297191/978517947.png)
Restart the app again and, once it's running, go to
Apple System Preferences -> Network -> Advanced -> Proxies
and enable 'SOCKS Proxy' using 'localhost:8888', hit OK and then Apply.
If you open safari and try browsing, the traffic should be routed via Docker for Mac.
If you start an nginx container:
Query the internal IP:
It should be possible to open
http://<IP>
in Safari.Let me know if this is helpful or not!
This information is as of 2018-03-31 with Docker 18.03.0-ce
I wanted to access host port from a docker container.
For example, an nginx process is running on the host machine with port 8888 open, then I would like to create a container which can curl host:8888.
I know how to discover container-to-container, but don't know how to get host IP address from a container.
Therefore, I wandered the internet.
Precondition
I mainly use Docker for Mac, but sometimes use Linux. So I want my containers to run on both platform.
TL;DR
Host networking mode?
I found Docker has 'host networking mode'.
With this mode, the container seems to be able access to the host with '127.0.0.1'. How easy! I found it!
So I tried it and it works on my Linux machine, but it didn't work on my Mac. Then I found:
The host networking driver only works on Linux hosts, and is not supported on Docker for Mac, Docker for Windows, or Docker EE for Windows Server.
(´・ω・`) ok... let me find another way please.
host.docker.internal?
I found I can resolve
host.docker.internal
as the host IP address in the container on Docker for Mac. Great! That's what I wanted to know! But... where's Linux version of it...?(´・ω・`) NotFound...
In addition, I was a little bit confused there're several names:
- docker.for.mac.localhost <- from 17.06.0 but now deprecated
- docker.for.mac.host.internal <- from 17.12.0-ce-mac46 but now deprecated
- host.docker.internal <- from 18.03.0-ce-mac59
Finally, my solution is like this.
I created
docker-entrypoint.sh
:and create Dockerfile call this file as an entry point.
As a result, Docker for Mac do nothing because it has 'host.docker.internal' and Linux version add it into hosts file.
(๑•̀ㅂ•́)و✧
The sample code is here:
https://github.com/bufferings/docker-access-host
https://github.com/bufferings/docker-access-host
I hope host.docker.internal will be added for Linux near future.
If you know better solution, please let me know.