1. cd /etc/yum.repos.d
2.备份
mv CentOS-Base.repo CentOS-Base.repo.backup
3. wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
4. mv CentOS6-Base-163.repo CentOS-Base.repo
更新
yum clean all
yum makecache
yum update1. cd /etc/yum.repos.d
2.备份
mv CentOS-Base.repo CentOS-Base.repo.backup
3. wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
4. mv CentOS6-Base-163.repo CentOS-Base.repo
更新
yum clean all
yum makecache
yum update