在向大家详细介绍CentOS yum之前，首先让大家了解下CentOS yum，然后全面介绍CentOS yum，希望对大家有用。CentOS yum安装方式在有网络环境的时候非常方便，选择一个比较快的CentOS yum源是非常有意义的
(1)自动选择最快的源
由于CentOS yum中有的mirror速度是非常慢的，如果yum选择了这个mirror，这个时候CentOS yum就会非常慢，对此，可以下载fastestmirror插件，它会自动选择最快的
- mirror：
- yum install yum-fastestmirror -y
- fastestmirror配置文件：（一般不用动）
- /etc/yum/pluginconf.d/fastestmirror.conf
你的CentOS yum镜像的速度测试记录文件：/var/cache/yum/timedhosts.txt
(2)一直受不了centos的更新源的速度，现在弄好了。更新200多MB的东东，5分钟搞定。1 mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.old
2 创建新的repo文件vi /etc/yum.repos.d/CentOS-Base.repo
引用
- # CentOS-Base.repo
- #
- # This file uses a new mirrorlist system developed by Lance Davis for CentOS.
- # 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-5.0 - Base
- baseurl=http://mirror.be10.com/centos/5/os/$basearch/
- gpgcheck=1
- gpgkey=http://mirror./centos/RPM-GPG-KEY-CentOS-5
- #released updates
- [update]
- name=CentOS-5.0 - Updates
- baseurl=http://mirror.be10.com/centos/5/updates/$basearch/
- gpgcheck=1
- gpgkey=http://mirror./centos/RPM-GPG-KEY-CentOS-5
- #packages used/produced in the build but not released
- [addons]
- name=CentOS-5.0 - Addons
- baseurl=http://mirror.be10.com/centos/5/addons/$basearch/
- gpgcheck=1
- gpgkey=http://mirror./centos/RPM-GPG-KEY-CentOS-5
- #additional packages that may be useful
- [extras]
- name=CentOS-5.0 - Extras
- baseurl=http://mirror.be10.com/centos/5/extras/$basearch/
- gpgcheck=1
- gpgkey=http://mirror./centos/RPM-GPG-KEY-CentOS-5
- #additional packages that extend functionality of existing packages
- [centosplus]
- name=CentOS-5.0 - Plus
- baseurl=http://mirror.be10.com/centos/5/centosplus/$basearch/
- gpgcheck=1
- enabled=0
- gpgkey=http://mirror./centos/RPM-GPG-KEY-CentOS-5
- #contrib - packages by Centos Users
- [contrib]
- name=CentOS-5.0 - Contrib
- baseurl=http://mirror.be10.com/centos/5/contrib/$basearch/
- gpgcheck=1
- enabled=0
- gpgkey=http://mirror./centos/RPM-GPG-KEY-CentOS-5
- #packages in testing
- [testing]
- name=CentOS-5.0 - Testing
- baseurl=http://mirror.be10.com/centos/5.0/testing/$basearch/
- gpgcheck=1
- enabled=0
- gpgkey=http://mirror./centos/RPM-GPG-KEY-CentOS-5
- rpm --import http://mirror./centos/RPM-GPG-KEY-CentOS-5
- [root@localhost yum.repos.d]# yum upgrade
