[root@localhost rpm]# cd /etc//
# 更新 yum 源
[root@localhost ]# yum update -y --skip-broken
# 清除所有 yum 缓存
[root@localhost ]# yum clean all
Loaded plugins: fastestmirror
Cleaning repos: base epel extras updates
Cleaning up list of fastest mirrors
# 重建 yum 缓存
[root@localhost ]# yum makecache