centos7安装docker并配置镜像

1.配置ali的yum镜像源 1. 获取阿里云 repo cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo #下面两条命令如果执行报错可以直接跳过执行2 cp /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel.repo.bak wget -O /etc/yum.repos.d/epel.repo https://mirrors.aliyun.com/repo/epel-7.repo 2.清理原来的缓存，重新缓存 yum clean all yum makecache 3.1卸载旧版本的docker yum remove docker \ docker-client \ docker-client-latest \ docker-common \ docker-latest \ docker-latest-logrotate \ docker-logrotate \ docker-engine #若之前没有安装过docker，会提示一堆不匹配，是正常现象，直接往下执行就好 3.2下载所需的安装包 yum install -y yum-utils 3.3设置镜像仓库 # 设置阿里云的Docker镜像仓库 yum-config-manager \ --add-repo \ https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo 3.4更新yum软件包索引 yum makecache fast 3.5安装docker相关的配置 yum install docker-ce docker-ce-cli containerd.io 4.启动docker systemctl start docker # 查看当前版本号，是否启动成功 docker version # 设置开机自启动 systemctl enable docker 5.run hello-world docker run hello-world 1.配置ali的yum镜像源 1. 获取阿里云 repo cp /etc/yum.repos.d/