Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
的解决方法：
在命令行输入：yum clean all
http://blog.andrewpike.co.uk/repodata-is-over-2-weeks-old/
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
原文：http://www.cnblogs.com/lilei9110/p/4335967.html