docker 安装

1.下载docker列表

https://download.docker.com/linux/centos/7/x86_64/stable/Packages/

2.安装rpm docker文件

sudo yum install docker -****.rpm

3.查看docker 安装版本

docker -v

4.查看docker 状态

systemctl status docker

显示inactive

systemctl enable docker

systemctl start docker

显示active