https://www.cnblogs.com/binbingg/p/14082610.html

https://www.xa3.net/?p=313

随着centos8的推出，国内yum源服务提供商关闭了对CentOS6 yum源的支持服务，万能的百度，万能的网友，一顿好找终于找到了一个能用的yum源：

地址：https://vault.centos.org/6.9/

一、把CentOS-Base.repo 里面的东西全部删掉，换如下内容:

[base]
name=CentOS-6
failovermethod=priority
baseurl=https://vault.centos.org/6.9/os/x86_64/
gpgcheck=0

二、把epel.repo里面的东西全部删掉，换如下内容:

[epel]
name=Extra Packages for Enterprise Linux 6 - $basearch
baseurl=https://archives.fedoraproject.org/pub/archive/epel/6/$basearch
failovermethod=priority
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
 
[epel-debuginfo]
name=Extra Packages for Enterprise Linux 6 - $basearch - Debug
baseurl=https://archives.fedoraproject.org/pub/archive/epel/6/$basearch/debug
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
gpgcheck=1
 
[epel-source]
name=Extra Packages for Enterprise Linux 6 - $basearch - Source
baseurl=https://archives.fedoraproject.org/pub/archive/epel/6/SRPMS
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
gpgcheck=1

三、执行以下两条命令：

yum clean all

yum makecache