切换yum源。

sudo vim /etc/yum.repos.d/CentOS-Base.repo 按i进入编辑模式，修改为以下内容。

[base]

name=CentOS-6.10

enabled=1

failovermethod=priority

baseurl=http://mirrors.cloud.aliyuncs.com/centos-vault/6.10/os/$basearch/

gpgcheck=1

gpgkey=http://mirrors.cloud.aliyuncs.com/centos-vault/RPM-GPG-KEY-CentOS-6

[updates]

name=CentOS-6.10

enabled=1

failovermethod=priority

baseurl=http://mirrors.cloud.aliyuncs.com/centos-vault/6.10/updates/$basearch/

gpgcheck=1

gpgkey=http://mirrors.cloud.aliyuncs.com/centos-vault/RPM-GPG-KEY-CentOS-6

[extras]

name=CentOS-6.10

enabled=1

failovermethod=priority

baseurl=http://mirrors.cloud.aliyuncs.com/centos-vault/6.10/extras/$basearch/

gpgcheck=1

gpgkey=http://mirrors.cloud.aliyuncs.com/centos-vault/RPM-GPG-KEY-CentOS-6编辑完成后，按Esc键，并输入:wq保存退出文件。