Error: Cannot find a valid baseurl for repo: base

在搭建git服务器安装数据库的时候，执行命令

yum install Percona-Server-shared-55-5.5.45-rel37.4.el6.x86_64.rpm Percona-Server-client-55-5.5.45-rel37.4.el6.x86_64.rpm Percona-Server-server-55-5.5.45-rel37.4.el6.x86_64.rpm

结果报错：Error: Cannot find a valid baseurl for repo: base

解决办法：vim /etc/resolv.conf

在里边添加如下配置：

; generated by /sbin/dhclient-script
search lan
nameserver 192.168.249.1

yum命令可正常执行