I normally prefer to manage my apps on my OSX with brew
I am able to install docker, docker-compose and docker-machine
docker --version
Docker version 17.05.0-ce, build 89658be
docker-compose --version
docker-compose version 1.13.0, build unknown
docker-machine --version
docker-machine version 0.11.0, build 5b27455
I did not download and run 'Docker for Mac' app.
However when I try to run
> docker run -d -p 80:80 --name webserver nginx
docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.
See 'docker run --help'.
I have already checked the sock file
ls -lah /var/run/docker.sock /var/tmp/docker.sock
ls: /var/run/docker.sock: No such file or directory
ls: /var/tmp/docker.sock: No such file or directory
I have also tried this proposed solution: Mac OS X sudo docker Cannot connect to the Docker daemon. Is the docker daemon running on this host?
But I got this error message:
$ eval $(docker-machine env default)
Host does not exist: "default"
Is it possible to get a docker service to run by command line tools?
On a supported Mac, run:
brew cask install docker
Then launch the Docker app. Click next. It will ask for privileged access. Confirm. A whale icon should appear in the top bar. Click it and wait for "Docker is running" to appear.
You should be able to run docker commands now:
docker ps
Because docker is a system-level package, you cannot install it using brew install, and must use the cask instead.
Note: This solution only works for Macs whose CPUs support virtualization, which may not include old Macs.
On macOS the docker binary is only a client and you cannot use it to run the docker daemon, because Docker daemon uses Linux-specific kernel features, therefore you can’t run Docker natively in OS X. So you have to install docker-machine in order to create VM and attach to it.
Install docker-machine on macOS
If you don't have docker-machine command yet, install it by using one of the following methods:
- Using Brew command:
brew install docker-machine docker. Manually from Releases page:
$ curl -L https://github.com/docker/machine/releases/download/v0.16.1/docker-machine-`uname -s`-`uname -m` >/usr/local/bin/docker-machine $ chmod +x /usr/local/bin/docker-machine
See: Get started with Docker for Mac.
Configure docker-machine on macOS
Create a default machine (if you don't have one, see: docker-machine ls):
docker-machine create --driver virtualbox default
Then set-up the environment for the Docker client:
eval "$(docker-machine env default)"
Then double-check by listing containers:
docker ps
See: Get started with Docker Machine and a local VM.
Related:
I had this same issue I solved it in the following steps:
docker-machine restart
Quit terminal (or iTerm2, etc, etc) and restart
eval $(docker-machine env default)
I also answered it here
Try this to create default.
docker-machine create default
on OSX assure you have launched the Docker application before issuing
docker ps
or docker build ... etc ... yes it seems strange and somewhat misleading that issuing
docker --version
gives version even though the docker daemon is not running ... ditto for those other version cmds ... I just encountered exactly the same symptoms
I had docker up to date, docker said it was running, and the diagnosis was good. I needed to unset some legacy environment variable (thanks https://docs.docker.com/docker-for-mac/troubleshoot/#workarounds-for-common-problems )
unset DOCKER_HOST
unset DOCKER_CERT_PATH
unset DOCKER_TLS_VERIFY
I have Mac OS and I open Launchpad and select docker application.
from reset tab click on restart.
I had the same problem. Docker running but couldn't access it through CLI.
For me the problem was solved by executing "Docker Quickstart Terminal.app". This is located in the "/Applications/Docker/" folder. As long as I work in this instance of the Terminal app Docker works perfectly. If a second window is needed I have to run the "Quickstart" app once more.
I have a Docker for Mac installation. Therefore I am not sure if my solution is valid for a Homebrew installation.
The "Docker Quickstart Terminal" app seems to be essentially some applescripts to launch the terminal app and a bash start script that initialise all the necessary environment variables.
Hope this helps someone else !
Install minikube and come join the dark side.
https://kubernetes.io/docs/tasks/tools/install-minikube/
$ bash --version
GNU bash, version 5.0.3(1)-release (x86_64-apple-darwin18.2.0)
Copyright (C) 2019 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
eval $(minikube docker-env)
$ docker run --rm -v ${PWD}:/local swaggerapi/swagger-codegen-cli generate -i /local/swagger.json -l python -o /local/test/
[main] INFO io.swagger.parser.Swagger20Parser - reading from /local/swagger.json
[main] WARN io.swagger.codegen.DefaultGenerator - 'host' not defined in the spec. Default to 'localhost'.
Works great on Macbook Pro 2018 with bash v5. No need to install all the other docker nonsense these days IMO. The VM and install script that comes with minikube can replace docker machine from my experience.
I first tried docker and docker-compose via homebrew, but it had the problem listed here. I had to install docker's official install from https://docs.docker.com/docker-for-mac/install/ and then everything worked as expected.
i simply had to run spotlight search and execute the Docker application under /Applications folder which brew cask install created. Once this was run it asked to complete installation. I was then able to run docker ps
来源：https://stackoverflow.com/questions/44084846/cannot-connect-to-the-docker-daemon-on-macos