YumRepo Error: All mirror URLs are not using ftp, http[s] or file.

1.第一步：修改yum源站点配置：

vi /etc/yum.repos.d/CentOS-Base.repo

2.第二步：对照清华大学镜像站中的目录修改后如下：

# CentOS-Base.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client.  You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the 
# remarked out baseurl= line instead.
#
#
 
[base]
name=CentOS-6.5 - Base
baseurl=http://mirrors.aliyun.com/centos-vault/6.6/os/x86_64/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6
 
[updates]
name=CentOS-6.5 - Updates
baseurl=http://mirrors.aliyun.com/centos-vault/6.6/updates/x86_64/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6
 
[extras]
name=CentOS-6.5 - Extras
baseurl=http://mirrors.aliyun.com/centos-vault/6.6/extras/x86_64/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6
 
[centosplus]
name=CentOS-6.5 - Plus
baseurl=http://mirrors.aliyun.com/centos-vault/6.6/centosplus/x86_64/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6
 
[contrib]
name=CentOS-6.5 - Contrib
baseurl=http://mirrors.aliyun.com/centos-vault/6.6/contrib/x86_64/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6

3.第三步：然后再利用以下命令清理以下缓存就可以了

yum clean all   #清除yum缓存
rm -rf /var/cache/yum/    #删除yum缓存文件
yum makecache   #重新创建yum缓存，这里注意系统时间要与因特网一致

4.第四步：验证执行

yum install ntp