317.el7.x86_64 (CentOS7.9)问题解决 问题描述 使用yum更新软件包的时候出现错误： # yum update -y Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirrors.cloud.aliyuncs.com * extras: mirrors.cloud.aliyuncs.com * updates: mirrors.cloud.aliyuncs.com base |…