1、systemctl stop firewalld.service && systemctl disable firewalld.service
2、setenforce 0
3、sed -i.bak ‘s/SELINUX=enforcing/SELINUX=permissive/’ /etc/selinux/config
4、创建一个 vi /etc/yum.repos.d/docker.repo 文件,内容如下:
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/7/
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
5、安装新版本 Docker
yum install -y docker-engine
6、开启Docker
systemctl start docker