一,配置本地yum

1,挂载光盘

mount /dev/cdrom/mnt/media

2,新建本地yun源的配置文件

vi /etc/yum.repos.d/local.repo

加入以下信息:

[Local]

name=Local

baseurl=file:///mnt/media

enable=1

gpgcheck=0

二,配置第三方yum

1.删除redhat 原有的yum

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

2.下载yum 安装文件

Wget -c http://mirrors.163.com/centos/6.4/os/x86_64/Packages/yum-3.2.29-40.el6.centos.noarch.rpm

wget -c http://mirrors.163.com/centos/6.4/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm

wget -c http://mirrors.163.com/centos/6.4/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm

wget -c http://mirrors.163.com/centos/6.4/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm

3.安装yum 软件包

(1)rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm

(2)rpm -ivh yum-metadata-parser-1.1.2-16.el6.x86_64.rpm

(3) 两个一起安装先后顺序不要乱(中间50%正常)

rpm -ivh yum-3.2.29-40.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm

4、更改yum源 #我们使用网易的CentOS镜像源

(1)清空yum仓库

# cd /etc/yum.repos.d/

#rm -rf *

(2)设置源

# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo

# vi CentOS6-Base-163.repo

编辑文件,把文件里面所有的$releasever全部替换为你得版本号,即6.4 最后保存!或者直接把下面的内存拷贝到CentOS6-Base-163.repo文件中即可(已经修改好) 

#################################################################

# CentOS-Base.repo

#

# The mirrorsystem uses the connecting IP address of the client and the

# update status ofeach mirror to pick mirrors that are updated to and

# geographicallyclose to the client. You should use thisfor CentOS updates

# unless you aremanually picking other mirrors.

#

# If the mirrorlist=does not work for you, as a fall back you can try the

# remarked outbaseurl= line instead.

#

#

[base]

name=CentOS-6.4 -Base - 163.com

baseurl=http://mirrors.163.com/centos/6.4/os/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=6.4&arch=$basearch&repo=os

gpgcheck=1

gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

#released updates

[updates]

name=CentOS-6.4 -Updates - 163.com

baseurl=http://mirrors.163.com/centos/6.4/updates/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=6.4&arch=$basearch&repo=updates

gpgcheck=1

gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

#additionalpackages that may be useful

[extras]

name=CentOS-6.4 -Extras - 163.com

baseurl=http://mirrors.163.com/centos/6.4/extras/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=6.4&arch=$basearch&repo=extras

gpgcheck=1

gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

#additionalpackages that extend functionality of existing packages

[centosplus]

name=CentOS-6.4 -Plus - 163.com

baseurl=http://mirrors.163.com/centos/6.4/centosplus/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=6.4&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-6.4 -Contrib - 163.com

baseurl=http://mirrors.163.com/centos/6.4/contrib/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=6.4&arch=$basearch&repo=contrib

gpgcheck=1

enabled=0

gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

#####################################################################

5、清理yum缓存

# yum clean all

# yum makecache #将服务器上的软件包信息缓存到本地,以提高搜索安装软件的速度

# yum installvim* #测试域名是否可用

至此,Redhat6可以使用CentOS的yum源在线安装软件了!

6.使用 # yum update

或 # yum upgrade 升级系统

注:两个命令区别:

# yum update

升级所有包,改变软件设置和系统设置,系统版本内核都升级

# yum -y upgrade

升级所有包,不改变软件设置和系统设置,系统版本升级,内核不改变