1. yum update #首先执行

    重启机器
    //查询是否安装了docker

    1. yum list installed | grep docker

    yum list installed | grep docker
    //删除docker

    1. yum remove docker \
    2. docker-client \
    3. docker-client-latest \
    4. docker-common \
    5. docker-latest \
    6. docker-latest-logrotate \
    7. docker-logrotate \
    8. docker-selinux \
    9. docker-engine-selinux \
    10. docker-engine
    12. rm -rf /etc/systemd/system/docker.service.d
    13. rm -rf /var/lib/docker
    14. rm -rf /var/run/docker

    //安装依赖

    1. yum install https://download.docker.com/linux/Fedora/30/x86_64/stable/Packages/containerd.io-1.2.6-3.3.fc30.x86_64.rpm

    //安装docker-ce

    1. yum install docker-ce

    //启动docker

    1. systemctl start docker

    //查看启动状态

    1. systemctl status  docker