[root@pachong yum-3.2.28]# yum search www Loaded plugins: fastestmirror Determining fastest mirrors YumRepo Error: All mirror URLs are not using ftp, http[s] or file. Eg. </html>/ removing mirrorlist with no valid mirrors: /var/cache/yum/x86_64/6/base/mirrorlist.txt Error: Cannot find a valid baseurl for repo: base 今天发现yum报错如上所示，后来找啊找，找到了这个帖子http://www.howtoforge.com/forums/showthread.php?t=54388 里面有关键的一个回帖，最后一栏 Can you check if your Internet connection is working and that you have valid nameservers in /etc/resolv.conf? 然后我打开 /etc/resolv.conf一看，果然这个里面指定的DNS的IP ping不过去 最后的原因是DNS服务器的IP换了，果然是网络问题 |
原文：http://lonelyprogram.blog.51cto.com/6246243/1355279