centos7安装docker

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

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

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

sudo yum makecache fast

sudo yum -y install docker-ce

systemctl start docker

配置镜像加速

mkdir -p /etc/docker

登录阿里云把自己的镜像加速器地址粘贴进去

sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://1x9l75cp.mirror.aliyuncs.com"]
}
EOF

systemctl daemon-reload

systemctl restart docker

卸载

systemctl stop docker
yum -y remove docker-ce
rm -rf /var/lib/docker