????? 由于RHEL的yum在線更新是收費的，如果沒有注冊的話是不能使用的，即不能在線安裝軟件。在這種情況下，如果我們使用的機器安裝的是RHEL系統(tǒng)要是每次安裝軟件先掛載本地光盤會很繁瑣，而且有些軟件也是老版本的，這種情況下我們可以借助CentOS的YUM源來滿足我們的需求。

一、刪除RHEL原有的YUM

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

二、下載CentOS的yum安裝包（163源）

wget?http://mirrors.163.com/centos/5/os/x86_64/CentOS/yum-3.2.22-40.el5.centos.noarch.rpm wget?http://mirrors.163.com/centos/5/os/x86_64/CentOS/yum-fastestmirror-1.1.16-21.el5.centos.noarch.rpm wget?http://mirrors.163.com/centos/5/os/x86_64/CentOS/yum-metadata-parser-1.1.2-4.el5.x86_64.rpm?? wget?http://mirrors.163.com/centos/5/os/x86_64/RPM-GPG-KEY-CentOS-5

三、安裝CentOS的YUM安裝包
yum和yum-plugin-fastestmirror需要一起安裝，這兩個包存在依賴關(guān)系，分開安裝會失敗，安裝之前先把RPM-GPG-KEY導入系統(tǒng)，否則會出現(xiàn)警告信息

rpm?-ivh?yum-metadata-parser-1.1.2-4.el5.x86_64.rpm?? rpm?--import?RPM-GPG-KEY-CentOS-5 rpm?–ivh?yum-3.2.22-40.el5.centos.noarch.rpm??yum-fastestmirror-1.1.16-21.el5.centos.noarch.rm

至此我們就可以在線使用yum了

四、修改yum源
為了使用在線使用Yum安裝軟件更快，我們可以使用國內(nèi)的網(wǎng)易Yum源或者其他國內(nèi)yum源

五、更改yum源? #我們使用網(wǎng)易的CentOS鏡像源

cd?/etc/yum.repos.d/ vi?rhel-debuginfo.repo #?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-5?-?Base?-?163.com mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=os baseurl=http://mirrors.163.com/centos/5/os/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 #released?updates [updates] name=CentOS-5?-?Updates?-?163.com mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=updates baseurl=http://mirrors.163.com/centos/5/updates/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 #packages?used/produced?in?the?build?but?not?released [addons] name=CentOS-5?-?Addons?-?163.com mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=addons baseurl=http://mirrors.163.com/centos/5/addons/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 #additional?packages?that?may?be?useful [extras] name=CentOS-5?-?Extras?-?163.com mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=extras baseurl=http://mirrors.163.com/centos/5/extras/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 #additional?packages?that?extend?functionality?of?existing?packages [centosplus] name=CentOS-5?-?Plus?-?163.com mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=centosplus baseurl=http://mirrors.163.com/centos/5/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 #contrib?-?packages?by?Centos?Users [contrib] name=CentOS-5?-?Contrib?-?163.com mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=contrib baseurl=http://mirrors.163.com/centos/5/contrib/$basearch/ gpgcheck=1 enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

六、清理

yum?clean?all yum?makecache

七、更新

yum?update

博文參考：http://pvbutler.blog.51cto.com/7662323/1320908

轉(zhuǎn)載于:https://blog.51cto.com/zhuqianwei/1678772

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