Redhat使用CentOS的Yum 網絡源

Redhat 的更新包只對註冊的用戶生效，因此咱們本身手動更改爲CentOS 的更新包，CentOS幾乎和redhat是同樣的.

一、首先查看redhat 7.0系統自己所安裝的那些yum 軟件包：
[root@localhost ~]# rpm -qa | grep yum

yum-utils-1.1.31-24.el7.noarch
yum-langpacks-0.4.2-3.el7.noarch
yum-metadata-parser-1.1.4-10.el7.x86_64
yum-rhn-plugin-2.0.1-4.el7.noarch
yum-3.4.3-118.el7.noarch

二、刪除這些軟件包；

[root@localhost ~]# rpm -e yum-3.4.3-118.el7.noarch --nodeps
[root@localhost ~]# rpm -e yum-utils-1.1.31-24.el7.noarch --nodeps
[root@localhost ~]# rpm -e yum-rhn-plugin-2.0.1-4.el7.noarch --nodeps
[root@localhost ~]# rpm -e yum-metadata-parser-1.1.4-10.el7.x86_64 --nodeps
[root@localhost ~]# rpm -e yum-langpacks-0.4.2-3.el7.noarch --nodeps
[root@localhost ~]# rpm -e PackageKit-yum-0.8.9-11.el7.x86_64 --nodeps

三、本機電腦得能上網（廢話，不上網怎麼用）

四、本身選擇一個合適的鏡像網站，找到本身系統所對應的文件包版本更新：

https://www.centos.org/download/mirrors/

我用的aws 美國 NJ州因此選擇了http://centos.mirror.constant.com/

五、找到本身所須要的版本下載：

wget http://centos.mirror.constant.com/7/os/x86_64/Packages/yum-3.4.3-132.el7.centos.0.1.noarch.rpm
wget http://centos.mirror.constant.com/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
wget http://centos.mirror.constant.com/7/os/x86_64/Packages/yum-utils-1.1.31-34.el7.noarch.rpm
wget http://centos.mirror.constant.com/7/os/x86_64/Packages/yum-updateonboot-1.1.31-34.el7.noarch.rpm
wget http://centos.mirror.constant.com/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-34.el7.noarch.rpm

六、安裝軟件包，注意依賴關係：

rpm -ivh yum-3.4.3-132.el7.centos.0.1.noarch.rpm yum-plugin-fastestmirror-1.1.31-34.el7.noarch.rpm yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
rpm -ivh yum-utils-1.1.31-34.el7.noarch.rpm
rpm -ivh yum-updateonboot-1.1.31-34.el7.noarch.rpm

七、新建repo 配置文件；
vi /etc/yum.repos.d/CentOS-Base.repo

內容以下：
根據本身的鏡像替換掉網址http://centos.mirror.constant.com/爲本身的鏡像網址

# CentOS-Base.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client. You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the
# remarked out baseurl= line instead.
#
#

[base]
name=CentOS-$releasever - Base
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
#baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
baseurl=http://centos.mirror.constant.com/7/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

#released updates
[updates]
name=CentOS-$releasever - Updates
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
#baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/
baseurl=http://centos.mirror.constant.com/7/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
#baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/
baseurl=http://centos.mirror.constant.com/7/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
#baseurl=http://mirror.centos.org/centos/$releasever/centosplus/$basearch/
baseurl=http://centos.mirror.constant.com/7/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7


八、導入RPM-GPG-KEY-CentOS-7

cd /etc/pki/rpm-gpg/
wget http://centos.mirror.constant.com/RPM-GPG-KEY-CentOS-7

九、清理原先緩存，建立新緩存

yum clean all

yum makecache

十、安裝試試

yum -y install zlib zlib-devel openssl openssl-devel pcre pcre-devel gd gd-devel

 

後記，注意：

1，莫忘記導入key2，刪除或禁用原先的repo文件3，--nodeps4，鏡像網址切換5，Centos和Redhat版本