配置 Redhat6 yum 更新源_综合

由于 redhat 的 yum 在线更新是收费的，如果没有注册的话不能使用，如果要使用，需将 redhat 的 yum 卸载后，重启安装，再配置其他源.

删除 redhat 原有 yum
1. rpm -aq | grep yum | xargs rpm -e --nodeps
下载 yum 安装文件（如果下载时找不到文件，就登录到：http://mirrors.163.com/centos/6/os/x86_64/ 上查找相应的文件，然后再下载）
1. wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-3.2.29-40.el6.centos.noarch.rpm
  wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
  wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm
  wget http://mirrors.163.com/centos/6/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm
安装yum
1. 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 yum-3.2.29-40.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm

更新 repo 文件（目录 /etc/yum.repos.d/ 下原来的文件都是可以删除的）

vim /etc/yum.repos.d/rhel-debuginfo.repo

写入如下内容：

[base]
name=CentOS-$releasever - Base
baseurl=http://mirrors.163.com/centos/6/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6#released updates
[updates]
name=CentOS-$releasever - Updates
baseurl=http://mirrors.163.com/centos/6/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6#packages used/produced in the build but not released
#[addons]
#name=CentOS-$releasever - Addons
#baseurl=http://mirrors.163.com/centos/$releasever/addons/$basearch/
#gpgcheck=1
#gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
baseurl=http://mirrors.163.com/centos/6/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
baseurl=http://mirrors.163.com/centos/6/centosplus/$basearch/
gpgcheck=1
enabled=0

yum clean all
update/install vim 测试下
1. yum -y install vim
yum 的相关配置可以在文件 /etc/yum.conf 中来指定，具体解释见下截图：
4. 默认设置是这样的
  3. 则下载安装过的安装包可以在目录 /var/cache/yum/x86_64/$releasever/base/packages 下找到