Red Hat Enterprise Linux 需要注冊，收費才可以使用yum進行自由下載

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刪除原有的yum

rpm -aq | grep yum | xargs rpm -e –nodeps

查看主機yum的安裝情況

rpm -qa |grep yum

下載centerOS對應的yum 進行安裝

http://mirrors.163.com/centos/6/os/x86_64/Packages/

rpm -ivh python-2.6.6-66.el6_8.x86_64.rpm python-libs-2.6.6-66.el6_8.x86_64.rpm

rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm
rpm -ivh yum-metadata-parser-1.1.2-16.el6.x86_64.rpm

rpm -ivh python-pycurl-7.19.0-9.el6.x86_64.rpm
rpm -ivh python-urlgrabber-3.9.1-11.el6.noarch.rpm

強制安裝

rpm -i –force –nodeps rpm-python-4.8.0-59.el6.x86_64.rpm
rpm -ivh yum-plugin-fastestmirror-1.1.30-41.el6.noarch.rpm yum-3.2.29-81.el6.centos.noarch.rpm

設置yum下載源

/etc/yum.repos.d進行修改CentOS6-Base-163.rep 參考https://www.jianshu.com/p/446e3fe7d710