YUM -y update出错

qzdmail

1. [root@centos yum.repos.d]# yum -y update
   
2. base                      100% |=========================| 1.1 kB    00:00     
   
3. updates                   100% |=========================|  951 B    00:00     
   
4. [url]http://mirror.centos.org/centos/5/contrib/i386/repodata/repomd.xml:[/url] [Errno 14] HTTP Error 404: Not Found
   
5. Trying other mirror.
   
6. Error: Cannot retrieve repository metadata (repomd.xml) for repository: contrib. Please verify its path and try again

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我在CentOS-Base.repo里加了几个国内镜像,然后升级系统,就抱这个错了,这个URL可以访问到的啊.....为啥还是出错呢