centos安装docker

1. 查看当前安装的centos支持docker不，docker要求centos的版本要高于3.10 uname -r 查看当前centos的版本
2. 更新yum软件源

yum update

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3. 卸载旧版本的docker

yum remove docker  docker-common docker-selinux docker-engine

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4. 安装依赖包

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

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5. 设置yum源

yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

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6. 安装dockers

yum install docker-ce 

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7. 设置开机启动

systemctl start docker & systemctl enable docker

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8. 查看安装是否成功

docker version