因centos7 阿里云镜像源不稳定，遂换成华为云源——
gzip/etc/yum.repos.d/*# basecurl-o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.huaweicloud.com/repository/conf/CentOS-7-anon.repo cat>/etc/yum.repos.d/epel.repo<<EOF [epel] name=Extra Packages for Enterprise Linux 7 - \$basearchbaseurl=https://mirrors.huaweicloud.com/epel/7/\$basearchfailovermethod=priority enabled=1 gpgcheck=0 EOF# epelsed-i"s/#baseurl/baseurl/g"/etc/yum.repos.d/epel.reposed-i"s/metalink/#metalink/g"/etc/yum.repos.d/epel.reposed-i"s@http://download.fedoraproject.org/pub@https://mirrors.huaweicloud.com@g"/etc/yum.repos.d/epel.repo# dockeryuminstall-y yum-utils device-mapper-persistent-data lvm2curl-o /etc/yum.repos.d/docker-ce.repo https://mirrors.huaweicloud.com/docker-ce/linux/centos/docker-ce.reposed-i's+download.docker.com+mirrors.huaweicloud.com/docker-ce+'/etc/yum.repos.d/docker-ce.repo yum makecache fast yuminstalldocker-ce
