CentOS6配置yum源

1. 备份系统默认的yum文件

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

2. 创建CentOS-Base.repo文件，添加如下内容

   # 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-6.10 - Base - mirrors.aliyun.com
   failovermethod=priority
   baseurl=http://mirrors.aliyun.com/centos-vault/6.10/os/$basearch/
   gpgcheck=1
   gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6
    
   #released updates 
   [updates]
   name=CentOS-6.10 - Updates - mirrors.aliyun.com
   failovermethod=priority
   baseurl=http://mirrors.aliyun.com/centos-vault/6.10/updates/$basearch/
   gpgcheck=1
   gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6
    
   #additional packages that may be useful
   [extras]
   name=CentOS-6.10 - Extras - mirrors.aliyun.com
   failovermethod=priority
   baseurl=http://mirrors.aliyun.com/centos-vault/6.10/extras/$basearch/
   gpgcheck=1
   gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6
    
   #additional packages that extend functionality of existing packages
   [centosplus]
   name=CentOS-6.10 - Plus - mirrors.aliyun.com
   failovermethod=priority
   baseurl=http://mirrors.aliyun.com/centos-vault/6.10/centosplus/$basearch/
   gpgcheck=1
   enabled=0
   gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6
    
   #contrib - packages by Centos Users
   [contrib]
   name=CentOS-6.10 - Contrib - mirrors.aliyun.com
   failovermethod=priority
   baseurl=http://mirrors.aliyun.com/centos-vault/6.10/contrib/$basearch/
   gpgcheck=1
   enabled=0
   gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6
   

3. 执行如下命令，是yum源生效

   yum clean all
   yum makecache