How to use `docker-machine create` so that the docker engine listens on a custom port?
work? Now they fail because after creation of docker on the host the daemon starts on port 2376 which is not accessible. Sure, I could manually change that port after creation but then the mentioned commands are not aware to connect to the docker daemon on that host on another port but 2376.
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Is there a flag for docker-machine to set up docker on host to listen on another port but 2376
yes, use the
--host option of the
docker daemon command. To make your Docker daemon listen on port 443 (which should be open all most firewalls), start your docker daemon with:
docker daemon -H tcp://0.0.0.0:443
If your docker host operating system is Debian or Ubuntu, you can set this in the
/etc/default/docker file by adding the line
If you are using RedHat or CentOS, add
OPTIONS=-H tcp://0.0.0.0:443 to the
To install a Docker engine with a custom
--host option, you would use docker machine with the
docker-machine create --engine-opt host=tcp://0.0.0.0:443 ...
Then when you use
docker-machine env ... you will note that the
DOCKER_HOST environment variable will still be set with the default port
2376, but now you can override it with
443 and it will work.
Unfortunately this won’t allow
docker-machine ls to work as the
2376 value for the docker engine port is hardcoded in docker-machine drivers. If you really want to get
docker-machine ls to work for a different port, the easiest way would be to duplicate one of the docker-machine driver source file that you use and hardcode a different port ; then compile a new docker-machine binary with your new driver.
Let’s say the IP address of the remote server is 220.127.116.11.
# create the docker engine using the generic Machine driver docker-machine create --engine-opt host=tcp://0.0.0.0:443 --driver=generic --generic-ip-address=18.104.22.168 mytestengine # prepare the environments so that docker client can connect on port 443 docker-machine env mytestengine export DOCKER_HOST=tcp://22.214.171.124:443 # use docker client as usual docker version