背景
centos6操作系統版本已經結束了生命周期(EOL)，linux社區已經不再維護該操作系統的版本
建議升級操作系統至centos7
如果生產中業務過度期仍需要使用centos6系統中的一些安裝包，請按照下文切換centos6的yum源
2020年11月30日CentOS 6 EOL。按照社區規則
CentOS 6的源地址 http://mirror.centos.org/centos-6/內容已移除
目前第三方的鏡像站中均已移除CentOS 6的源。
阿里雲的源 http://mirrors.cloud.aliyuncs.com和 http://mirrors.aliyun.com也無法同步到CentOS 6的源。
當您在阿里雲上繼續使用默認配置的CentOS 6的源會發生報錯。報錯示例如下圖所示：
解決方法：
直接在linux命令行執行以下代碼即可
cat >> /etc/yum.repos.d/CentOS-aliyun-lhr.repo <<"EOF"
[base]
name=CentOS-6.10
enabled=1
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos-vault/6.10/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6
[updates]
name=CentOS-6.10
enabled=1
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos-vault/6.10/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.comm/centos-vault/RPM-GPG-KEY-CentOS-6
[extras]
name=CentOS-6.10
enabled=1
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos-vault/6.10/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6
[epel]
name=Extra Packages for Enterprise Linux 6 - $basearch
enabled=1
failovermethod=priority
baseurl=http://mirrors.aliyun.com/epel-archive/6/$basearch
gpgcheck=0
gpgkey=http://mirrors.aliyun.com/epel-archive/RPM-GPG-KEY-EPEL-6
EOF
cat >> /etc/yum.repos.d/CentOS-neusoft-lhr.repo <<"EOF"
[base]
name=CentOS-6-Base
baseurl=http://mirrors.neusoft.edu.cn/centos/6/os/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
[updates]
name=CentOS-6-Updates
baseurl=http://mirrors.neusoft.edu.cn/centos/6/updates/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
[extras]
name=CentOS-6-Extras
baseurl=http://mirrors.neusoft.edu.cn/centos/6/extras/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
[centosplus]
name=CentOS-6-Plus
baseurl=http://mirrors.neusoft.edu.cn/centos/6/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
[contrib]
name=CentOS-6-Contrib
baseurl=http://mirrors.neusoft.edu.cn/centos/6/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
[epel]
name=Extra Packages for Enterprise Linux 6 - $basearch
enabled=1
failovermethod=priority
baseurl=http://mirrors.neusoft.edu.cn/epel/6/$basearch
gpgcheck=0
gpgkey=http://mirrors.neusoft.edu.cn/epel/RPM-GPG-KEY-EPEL-6
EOF
