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• 问题描述

  直接运行docker 命令出现:

  Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://~images/json: dial unix /var/run/docker.sock: connect: permission denied

  sudo docker 执行命令才可以.

• 解决方案

  If you want to run docker as non-root user then you need to add it to the docker group.

  sudo groupadd dockersudo usermod -aG docker $USERnewgrp docker

  On Linux, when you run any docker command, the docker binary will try to connect to /var/run/docker.sock. As indicated by its .sock extension, this file is a Unix Domain Socket - basically, a way so multiple processes can communicate on the local computer (also called an IPC mechanism.)

  IPC, Inter-Process Communication

  In the case of Docker, the main reason for using the socket is that any user belonging to the docker group can connect to the socket while the Docker daemon itself can run as root.

• References