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docker: open /var/run/docker.sock: permission denied

$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/v1.24/containers/create: dial unix /var/run/docker.sock: connect: permission denied

Analysis

Your user does not have permission to talk to the Docker daemon via the Unix socket.

Common Triggers

●User not in the docker group.
●Running docker without sudo on a default installation.

Debug Checks

$Check groups: groups.

Resolution

Add user to group: sudo usermod -aG docker $USER (re-login required).

Use sudo docker ... (temporary).

Metadata

Tool: Docker
Severity: High
Tags: #docker#permissions#socket