CentOS 修改yum源为国内源

修改yum源的方法有两种，很多朋友喜欢修改yum.repos.d这个文件进行更改，deepvps感觉这个方法不是太好，以下这个方法就方便多了。

在CentOS系统中，可以直接通过yum来安装组件，但系统默认的yum源速度往往不尽人意，都连接海外的，为了在国内达到快速安装的目的，就要需要修改yum源，可以使用
http://mirrors.163.com/ http://mirrors.sohu.com 这2个国内源。

执行以下命令就可以了

cd /etc/yum.repos.d

mv CentOS-Base.repo CentOS-Base.repo.bak

wget http://mirrors.163.com/.help/CentOS-Base-163.repo
或

wget http://mirrors.sohu.com/help/CentOS-Base-sohu.repo
(好像用不了啊， )

route add default gw 192.168.1.1//

运行yum makecache生成缓存

搞定。

[yasi]:

在执行最后一步，即yum makecache的时候，遇到错误：

Loaded plugins: fastestmirror
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
Repository contrib is listed more than once in the configuration
Loading mirror speeds from cached hostfile
* addons: mirrors.163.com
* base: mirror.metrocast.net
* extras: mirror.beyondhosting.net
* fasttrack: centos.vipernetworksystems.com
* updates: centos.vipernetworksystems.com http://mirrors.163.com/centos/6/addons/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404"
Trying other mirror. http://mirror.centos.org/centos/6/addons/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404"
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: addons. Please verify its path and try again

原因是，http://mirrors.163.com/centos/6/addons/x86_64/repodata/repomd.xml和 http://mirror.centos.org/centos/6/addons/x86_64/repodata/repomd.xml 确实不存在，可能被更新掉了。解决办法是，找到可用的URL替换之，或者把相应的.repo文件中的项整个注释掉。这里我采用后者。

例如，在CentOS-Base-163.repo中，注释掉整个addon项

#[addons]
#name=CentOS-$releasever - Addons - 163.com
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=addons
#baseurl=http://mirrors.163.com/centos/$releasever/addons/$basearch/
#gpgcheck=1
#pgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

[yasi]:

在执行最后一步，即yum makecache的时候，遇到错误：

Loaded plugins: fastestmirror
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
Repository contrib is listed more than once in the configuration
Loading mirror speeds from cached hostfile
* addons: mirrors.163.com
* base: mirror.metrocast.net
* extras: mirror.beyondhosting.net
* fasttrack: centos.vipernetworksystems.com
* updates: centos.vipernetworksystems.com http://mirrors.163.com/centos/6/addons/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404"
Trying other mirror. http://mirror.centos.org/centos/6/addons/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404"
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: addons. Please verify its path and try again

原因是，http://mirrors.163.com/centos/6/addons/x86_64/repodata/repomd.xml和 http://mirror.centos.org/centos/6/addons/x86_64/repodata/repomd.xml 确实不存在，可能被更新掉了。解决办法是，找到可用的URL替换之，或者把相应的.repo文件中的项整个注释掉。这里我采用后者。

例如，在CentOS-Base-163.repo中，注释掉整个addon项

#[addons]
#name=CentOS-$releasever - Addons - 163.com
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=addons
#baseurl=http://mirrors.163.com/centos/$releasever/addons/$basearch/
#gpgcheck=1
#pgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

(难得啊， 终于解决了这个问题了哈， 多google, 并且 把 搜到的帖子 集中到一个中去。)