Set environment variables to dictate that
docker should run a command against a particular machine.
$ docker-machine env --help Usage: docker-machine env [OPTIONS] [arg...] Display the commands to set up the environment for the Docker client Description: Argument is a machine name. Options: --swarm Display the Swarm config instead of the Docker daemon --shell Force environment to be configured for a specified shell: [fish, cmd, powershell, tcsh], default is sh/bash --unset, -u Unset variables instead of setting them --no-proxy Add machine IP to NO_PROXY environment variable
docker-machine env machinename prints out
export commands which can be run in a subshell. Running
docker-machine env -u prints
unset commands which reverse this effect.
$ env | grep DOCKER $ eval "$(docker-machine env dev)" $ env | grep DOCKER DOCKER_HOST=tcp://192.168.99.101:2376 DOCKER_CERT_PATH=/Users/nathanleclaire/.docker/machines/.client DOCKER_TLS_VERIFY=1 DOCKER_MACHINE_NAME=dev $ # If you run a docker command, now it runs against that host. $ eval "$(docker-machine env -u)" $ env | grep DOCKER $ # The environment variables have been unset.
The output described above is intended for the shells
zsh (if you’re not sure which shell you’re using, there’s a very good possibility that it’s
bash). However, these are not the only shells which Docker Machine supports. Docker Machine detects the shells available in your environment and lists them. Docker supports
If you are using
fish and the
SHELL environment variable is correctly set to the path where
fish is located,
docker-machine env name prints out the values in the format which
set -x DOCKER_TLS_VERIFY 1; set -x DOCKER_CERT_PATH "/Users/nathanleclaire/.docker/machine/machines/overlay"; set -x DOCKER_HOST tcp://192.168.99.102:2376; set -x DOCKER_MACHINE_NAME overlay # Run this command to configure your shell: # eval "$(docker-machine env overlay)"
If you are on Windows and using either PowerShell or
docker-machine env Docker Machine should now detect your shell automatically. If the automatic detection does not work, you can still override it using the
--shell flag for
$ docker-machine.exe env --shell powershell dev $Env:DOCKER_TLS_VERIFY = "1" $Env:DOCKER_HOST = "tcp://192.168.99.101:2376" $Env:DOCKER_CERT_PATH = "C:\Users\captain\.docker\machine\machines\dev" $Env:DOCKER_MACHINE_NAME = "dev" # Run this command to configure your shell: # docker-machine.exe env --shell=powershell dev | Invoke-Expression
$ docker-machine.exe env --shell cmd dev set DOCKER_TLS_VERIFY=1 set DOCKER_HOST=tcp://192.168.99.101:2376 set DOCKER_CERT_PATH=C:\Users\captain\.docker\machine\machines\dev set DOCKER_MACHINE_NAME=dev # Run this command to configure your shell: copy and paste the above values into your command prompt
Tip: See also, how to unset environment variables in the current shell.
The env command supports a
--no-proxy flag which ensures that the created machine’s IP address is added to the
no_proxy environment variable.
This is useful when using
docker-machine with a local VM provider, such as
vmwarefusion, in network environments where an HTTP proxy is required for internet access.
$ docker-machine env --no-proxy default export DOCKER_TLS_VERIFY="1" export DOCKER_HOST="tcp://192.168.99.104:2376" export DOCKER_CERT_PATH="/Users/databus23/.docker/machine/certs" export DOCKER_MACHINE_NAME="default" export NO_PROXY="192.168.99.104" # Run this command to configure your shell: # eval "$(docker-machine env default)"
You may also want to visit the documentation on setting
HTTP_PROXY for the created daemon using the
--engine-env flag for
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