使用YUM 安装 docker的方法步骤

uname -r 

yum remove docker          docker-client \         
				 docker-client-latest          docker-common          docker-latest          docker-latest-logrotate          docker-logrotate          docker-selinux          docker-engine-selinux          docker-engine

yum install -y yum-utils device-mapper-persistent-data lvm2

yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

yum makecache fast

 yum -y install docker-ce

systemctl start docker

systemctl  enable docker.service

systemctl restart docker

 docker -v