一：删除已有的yum
rpm -qa|grep yum
rpm -qa|grep yum|xargs rpm -e --nodeps
rpm -qa|grep yum
二：安装新的yum
wget http://mirrors.163.com/centos/6.6/os/x86_64/Packages/yum-3.2.29-60.el6.centos.noarch.rpm
wget http://mirrors.163.com/centos/6.6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
wget http://mirrors.163.com/centos/6.6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm
rpm -ivh yum-metadata-parser-1.1.2-16.el6.x86_64.rpm yum-3.2.29-60.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm
三：文件配置
cd /etc/yum.repos.d/
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
vim CentOS6-Base-163.repo 文件中的所有$release用6.6代替
[base]
name=CentOS-6.6 - Base - 163.com
baseurl=http://mirrors.163.com/centos/6/os/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6.6&arch=$basearch&repo=os
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#released updates
[updates]
name=CentOS-6.6 - Updates - 163.com
baseurl=http://mirrors.163.com/centos/6.6/updates/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6.6&arch=$basearch&repo=updates
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful
[extras]
name=CentOS-6.6 - Extras - 163.com
baseurl=http://mirrors.163.com/centos/6.6/extras/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6.6&arch=$basearch&repo=extras
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-6.6 - Plus - 163.com
baseurl=http://mirrors.163.com/centos/6.6/centosplus/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6.6&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#contrib - packages by Centos Users
[contrib]
name=CentOS-6.6 - Contrib - 163.com
baseurl=http://mirrors.163.com/centos/6.6/contrib/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6.6&arch=$basearch&repo=contrib
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
四：使配置生效
yum clean all
yum makecache
yum update
五：防火墙配置
vi /etc/sysconfig/iptables
/etc/init.d/iptables restart
rpm -qa|grep yum
rpm -qa|grep yum|xargs rpm -e --nodeps
rpm -qa|grep yum
二：安装新的yum
wget http://mirrors.163.com/centos/6.6/os/x86_64/Packages/yum-3.2.29-60.el6.centos.noarch.rpm
wget http://mirrors.163.com/centos/6.6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
wget http://mirrors.163.com/centos/6.6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm
rpm -ivh yum-metadata-parser-1.1.2-16.el6.x86_64.rpm yum-3.2.29-60.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm
三：文件配置
cd /etc/yum.repos.d/
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
vim CentOS6-Base-163.repo 文件中的所有$release用6.6代替
[base]
name=CentOS-6.6 - Base - 163.com
baseurl=http://mirrors.163.com/centos/6/os/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6.6&arch=$basearch&repo=os
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#released updates
[updates]
name=CentOS-6.6 - Updates - 163.com
baseurl=http://mirrors.163.com/centos/6.6/updates/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6.6&arch=$basearch&repo=updates
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful
[extras]
name=CentOS-6.6 - Extras - 163.com
baseurl=http://mirrors.163.com/centos/6.6/extras/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6.6&arch=$basearch&repo=extras
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-6.6 - Plus - 163.com
baseurl=http://mirrors.163.com/centos/6.6/centosplus/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6.6&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#contrib - packages by Centos Users
[contrib]
name=CentOS-6.6 - Contrib - 163.com
baseurl=http://mirrors.163.com/centos/6.6/contrib/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6.6&arch=$basearch&repo=contrib
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
四：使配置生效
yum clean all
yum makecache
yum update
五：防火墙配置
vi /etc/sysconfig/iptables
/etc/init.d/iptables restart
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/28624388/viewspace-1773642/ ，如需转载，请注明出处，否则将追究法律责任。
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