安装docker问题：Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

环境：

vmware 安装 CentOS-8.1.1911-x86_64-dvd1

 

问题现象：

执行docker version 命令后提示：

Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

现象截图：

 

解决方案：

执行如下两行命令

systemctl daemon-reload

systemctl restart docker.service

 

处理后运行命令截图：