centos中yum安装时提示Cannot find a valid baseurl for repo: base/7/x86_64 出现仓库源问题
引言centos中yum安装时报Cannotfindavalidbaseurlforrepo:base/7/x86_64错误如下已加载插件:fastestmirrorLoadingmirrorspeedsfromcachedhostfileCouldnotretrievemirrorlisthttp://mirrorlist.centos.org/?release=7&arch=x86_64&re