How do I start the docker daemon on macOS?

Question

I am using macOS 10.14.6 and docker info shows me that the docker daemon is not running.

How do I start the docker daemon from terminal?

I have not found any information on doing so anywhere. On Linux you do something like sudo service docker stop, but this is incompatible with MacOS.

Answer 1

An alternative solution is to use other runtime for docker. For example colima

brew install colima
colima start
docker ps -a

Since docker desktop isn't free for enterprise usage, the alternative runtime is a good option.

NOTE: if you've previously used Docker Desktop for launching Docker daemon and had an export of DOCKER_HOST defined in your user's shell configuration (.bash_profile, .zsh_profile etc.), you need to re-specify DOCKER_HOST to make sure it points to .colima directory and commands like docker-compose up -d work properly.

Example:

export DOCKER_HOST=unix:///$HOME/.colima/docker.sock

Answer 2

The docker setup does not work as in a normal Linux machine, on a Mac it is much more complicated. But it can be done!

1. brew install --cask docker virtualbox
2. brew install docker-machine
3. docker-machine create --driver virtualbox default
4. docker-machine restart
5. eval "$(docker-machine env default)" # This might throw an TSI connection error. In that case run docker-machine regenerate-certs default
6. (docker-machine restart) # maybe needed
7. docker run hello-world

These steps are based on information given in these two questions:

• Cannot connect to the Docker daemon on macOS
• Mac OS X sudo docker Cannot connect to the Docker daemon. Is the docker daemon running on this host?.

Answer 3

Here is an alternative solution which worked for me:

• remove docker and docker-compose installed by brew
• install Docker Desktop for Mac or use brew install homebrew/cask/docker
• run it and pass admin credentials to start everything

It resolved issues with "docker daemon not running" as well as some other issues that the other answer didn't (e.g. 0.0.0.0 ports were not redirected with docker installed using brew and worked smoothly with Docker Desktop installation).

Answer 4

If you have Docker Desktop installed, the docker daemon will be launched if you launch Docker Desktop.

To do that, you can run in Terminal:

open -a Docker

Also, if you don't like the window pop-up at startup, you can disable it by unchecking:

"Preferences" (via gear icon on the Docker Desktop window) -> "General" -> "Open Docker Dashboard at startup"

Answer 5

Just install "Docker Desktop" and configure it to start when you log in.

• You can find Docker Desktop here: https://www.docker.com/products/docker-desktop/
• Install and configure as follow: "Settings" > "General" > and check "Start Docker Desktop when you log in"

Answer 6

How do I start the docker daemon from terminal [ on MacOS ] ?

TL;DR

I use a combination of open, and docker info to start the docker daemon from terminal on MacOS.

open -a docker && while ! docker info > /dev/null 2>&1; do sleep 1 ; done

For the curious

First, we open the Docker application by passing docker to the -a or application flag of the open command.

open -a docker

For me, the engine takes a few seconds to actually boot, so I run docker info until it returns an exit code of 0 ( or success ).

while ! docker info; do sleep 1 ; done

Since I don't like seeing the terminal output while waiting, I redirect it to /dev/null. I want to capture errors and output alike, so I pass 2>&1 which says to send standard error and standard output to the same place.

> /dev/null 2>&1

Finally, we get the command.

open -a docker && while ! docker info > /dev/null 2>&1; do sleep 1 ; done