CentOS is now unsupported, but if you want to update other packages on your system using Yum, then you will likely receive the following message:
Error: Cannot find a valid baseurl for repo: base
You will need to move your CentOS-Base.repo to use the "vault" endpoints. Copy the text below to help...
[base]
name=CentOS-6.10 - Base - vault.centos.org
failovermethod=priority
baseurl=http://vault.centos.org/6.10/os/$basearch/
gpgcheck=1
gpgkey=http://vault.centos.org/RPM-GPG-KEY-CentOS-6
#released updates
[updates]
name=CentOS-6.10 - Updates - vault.centos.org
failovermethod=priority
baseurl=http://vault.centos.org/6.10/updates/$basearch/
gpgcheck=1
gpgkey=http://vault.centos.org/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful
[extras]
name=CentOS-6.10 - Extras - vault.centos.org
failovermethod=priority
baseurl=http://vault.centos.org/6.10/extras/$basearch/
gpgcheck=1
gpgkey=http://vault.centos.org/RPM-GPG-KEY-CentOS-6
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-6.10 - Plus - vault.centos.org
failovermethod=priority
baseurl=http://vault.centos.org/6.10/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://vault.centos.org/RPM-GPG-KEY-CentOS-6
#contrib - packages by Centos Users
[contrib]
name=CentOS-6.10 - Contrib - vault.centos.org
failovermethod=priority
baseurl=http://vault.centos.org/6.10/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://vault.centos.org/RPM-GPG-KEY-CentOS-6