问题
I think that command redirected $ docker commands to the docker machine. Now all my docker commands are giving me an error FATA[0000] Couldn't read ca cert... follwed by the path to the docker-machine I created. How can I fix my shell?
回答1:
What you are looking for is:
eval "$(docker-machine env -u)"
It will unset the DOCKER_* variables.
For the record, here's the output of docker-machine env -u:
unset DOCKER_TLS_VERIFY
unset DOCKER_HOST
unset DOCKER_CERT_PATH
unset DOCKER_MACHINE_NAME
回答2:
You could also restart your shell. This will drop the variables that minkube docker-env exports.
回答3:
I had been searching for an answer to this for quite awhile. Shortly after posting the question on stackoverflow I realized typing in to the terminal the export commands docker gives on startup resolved my issue.
To connect the Docker client to the Docker daemon, please set:
export DOCKER_HOST=tcp:// some IP address
export DOCKER_CERT_PATH= some file path
export DOCKER_TLS_VERIFY=1
回答4:
I can see that this is an old post but if someone else runs into this issue, who is new to docker like me this can help. By typing:
eval $(docker-machine env nameOfVm)
you are setting your current shell to use docker in that docker-machine. You can check if you type docker-machine ls
that under active tab, that status is changed from - to * for that machine. You can also check which machine is active by running docker-machine active.
If you want to undo eval, just run:
eval $(docker-machine env -u)
and it will unset variables for active machine (You don't have to specify the name of the machine). This is all under macOS but I think it should be same on linux as well. You can read more about this here: Docker documentation: docker-machine env
回答5:
All you have to do is run
docker-machine env machine-name
Then, copy and run the last segment in the output to set or remove the env variables.
Which looks like this in Windows :
eval $("C:\Program Files\Docker Toolbox\docker-machine.exe" env machine-name)
If it's set already, docker adds a "-u" at the tail to make the task easy.
like this in Windows :
eval $("C:\Program Files\Docker Toolbox\docker-machine.exe" env -u)
That's all.
来源：https://stackoverflow.com/questions/30550742/how-do-i-undo-the-command-eval-docker-machine-env-blog