1、确保服务器连网，配置网络Yum源，安装docker需要extra源
# cd /etc/yum.repos.d/
将阿里云的Centos-7.repo下载保存到该目录
# sed -i 's/$releasever/7/g' Centos-7.repo
2、安装Docker依赖
# yum install -y yum-utils \
device-mapper-persistent-data \
lvm2
3、配置Docker的Yum源
# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
# yum-config-manager --enable docker-ce-nightly
# yum-config-manager --enable docker-ce-test
# yum-config-manager --disable docker-ce-nightly
4、安装Docker CE
# yum -y install docker-ce \
docker-ce-cli \
containerd.io
5、启动Docker
# systemctl start docker
查看docker安装版本信息
# docker info
