Centos 7 yum库工具下载失败（自用）

bash (curl -sSL https://gitee.com/SuperManito/LinuxMirrors/raw/main/ChangeMirrors.sh)解决方法输入上述指令更改软件源改为阿里云的软件源默认选择即可。然后重新安装yum工具。sudo yum install -y yum-utils device-mapper-persistent-data lvm2配置docker的yum源阿里云源。sudo yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo sudo sed -i sdownload.docker.commirrors.aliyun.com/docker-ce /etc/yum.repos.d/docker-ce.repo更新yum建立缓存。sudo yum makecache fast