RHEL6: how to use Centos6 yum
Ref:
http://www.dedecms.com/knowledge/servers/linux-bsd/2012/0819/8475.html
Almost right there.
1、删除RHEL原有的yum
rpm -aq|grep yum|xargs rpm -e --nodeps #删除
2、下载新的yum安装包 #这里我们使用CentOS的yum源
学校里的镜像
http://centos.ustc.edu.cn/centos/6.7/os/x86_64/Packages/
wget http://centos.ustc.edu.cn/centos/6.7/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm http://centos.ustc.edu.cn/centos/6.7/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm http://centos.ustc.edu.cn/centos/6.7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm http://centos.ustc.edu.cn/centos/6.7/os/x86_64/Packages/yum-3.2.29-69.el6.centos.noarch.rpm
结果：
下载完毕 --2015-08-15 14:16:00--
下载了：4 个文件，1.3s (820 KB/s) 中的 1.1M
3、安装yum软件包
rpm -ivh *.rpm
接着
[root@localhost z]# rpm -ivh yum*.rpm
warning: yum-3.2.29-69.el6.centos.noarch.rpm: Header V3 RSA/SHA1 Signature, key ID c105b9de: NOKEY
Preparing... ########################################### [100%]
1:yum-metadata-parser ########################################### [ 33%]
2:yum-plugin-fastestmirro########################################### [ 67%]
3:yum ########################################### [100%]
[root@localhost z]#
cd /etc/yum.repos.d/
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
vi CentOS6-Base-163.repo #编辑文件
学校则获取如下源
这是CentOS 6的:
# 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-$releasever - Base - mirrors.ustc.edu.cn
baseurl=http://mirrors.ustc.edu.cn/centos/$releasever/os/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
gpgcheck=1
gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6
#released updates
[updates]
name=CentOS-$releasever - Updates - mirrors.ustc.edu.cn
baseurl=http://mirrors.ustc.edu.cn/centos/$releasever/updates/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
gpgcheck=1
gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras - mirrors.ustc.edu.cn
baseurl=http://mirrors.ustc.edu.cn/centos/$releasever/extras/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
gpgcheck=1
gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus - mirrors.ustc.edu.cn
baseurl=http://mirrors.ustc.edu.cn/centos/$releasever/centosplus/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6
#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib - mirrors.ustc.edu.cn
baseurl=http://mirrors.ustc.edu.cn/centos/$releasever/contrib/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib
gpgcheck=1
enabled=0
gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6
注意将其中带$的定义改掉。
否则yum makecache会出错。见附录出错报告。
修改后内容
# 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-6.7 - Base - mirrors.ustc.edu.cn baseurl=http://mirrors.ustc.edu.cn/centos/6.7/os/x86_64/ #mirrorlist=http://mirrorlist.centos.org/?release=6.7&arch=x86_64&repo=os gpgcheck=1 gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6 #released updates [updates] name=CentOS-6.7 - Updates - mirrors.ustc.edu.cn baseurl=http://mirrors.ustc.edu.cn/centos/6.7/updates/x86_64/ #mirrorlist=http://mirrorlist.centos.org/?release=6.7&arch=x86_64&repo=updates gpgcheck=1 gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6 #additional packages that may be useful [extras] name=CentOS-6.7 - Extras - mirrors.ustc.edu.cn baseurl=http://mirrors.ustc.edu.cn/centos/6.7/extras/x86_64/ #mirrorlist=http://mirrorlist.centos.org/?release=6.7&arch=x86_64&repo=extras gpgcheck=1 gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-6.7 - Plus - mirrors.ustc.edu.cn baseurl=http://mirrors.ustc.edu.cn/centos/6.7/centosplus/x86_64/ #mirrorlist=http://mirrorlist.centos.org/?release=6.7&arch=x86_64&repo=centosplus gpgcheck=1 enabled=0 gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6 #contrib - packages by Centos Users [contrib] name=CentOS-6.7 - Contrib - mirrors.ustc.edu.cn baseurl=http://mirrors.ustc.edu.cn/centos/6.7/contrib/x86_64/ #mirrorlist=http://mirrorlist.centos.org/?release=6.7&arch=x86_64&repo=contrib gpgcheck=1 enabled=0 gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6
修改方法：
vi c6.repo
替换如下
:%s/\$releaseserver/6.7/g
:%s/\$arch/x86_64/g
其中，
%:表示全局替换， s表示替换动作，/\$releaseserver/表示被替换者, 6.7表示替换后。g暂时不清楚,global?(FIXME)
附录：出错报告。
[root@localhost yum.repos.d]# yum makecache
已加载插件：fastestmirror, product-id, subscription-manager
Updating certificate-based repositories.
http://mirrors.ustc.edu.cn/centos/%24releasever/os/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404"
尝试其他镜像。
错误：Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again
[root@localhost yum.repos.d]#
附录：正确报告
[root@localhost yum.repos.d]# yum makecache
已加载插件：fastestmirror, product-id, subscription-manager
Updating certificate-based repositories.
Loading mirror speeds from cached hostfile
base | 3.7 kB 00:00
base/primary_db | 4.6 MB 00:04
base/other_db | 2.8 MB 00:10
extras | 3.4 kB 00:00
extras/filelists_db | 29 kB 00:00
extras/prestodelta | 601 B 00:00
extras/primary_db | 26 kB 00:00
extras/other_db | 30 kB 00:00
updates | 3.4 kB 00:00
updates/filelists_db | 695 kB 00:03
updates/prestodelta | 64 kB 00:00