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Fixing the Docker Permission Denied While Trying to Connect to the Docker Daemon...
source link: https://fuzzyblog.io/blog/docker/2020/06/10/fixing-the-docker-permission-denied-while-trying-to-connect-to-the-docker-daemon-socket-error.html
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Fixing the Docker Permission Denied While Trying to Connect to the Docker Daemon Socket Error
Jun 10, 2020
I recently had the situation where even the simplest docker command:
docker run -it bash
gave this error:
docker: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock:
Post http://%2Fvar%2Frun%2Fdocker.sock/v1.40/containers/create: dial unix /var/run/docker.sock: connect: permission denied.
See 'docker run --help'.
The solution for this is actually pretty simple:
- Add your user to the docker group. Since I was running Ubuntu linux, the default user is also ubuntu and then command is:
- sudo usermod -aG docker ubuntu
- And then you have to log out and log back in or u -s ${ubuntu}
Here's an ansible task which you can drop in a playbook to accomplish this:
- name: Update the ubuntu user to be part of the docker group
user:
name: ubuntu
shell: /bin/bash
groups: docker
append: yes
Verifying this
If you need to validate what groups a user is in then use:
id -nG ubuntu
Note: Thanks to Don Neufeld for teaching me this command; somehow despite N decades of unix experience, I missed the id command. Bizarre.
See Also
Here's a good article from Digital Ocean on this.
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