CentOS Yum不可用解决方法

Linux

重新添加163Yum源,具体步骤如下：

1、备份本地Yum源

    cd /etc/yum.repos.d
    mv local.repo local.repo.temp

2、添加163Yum源

将163Yum源添加至 /etc/yum.repos.d 目录，具体可见以下第三点，然后 运行如下代码即可：

yum list

3、163 Yum源文件内容

保存如下内容至文件 CentOS6-Base.repo 即可

    # 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-$releasever - Base - 163.com
    baseurl=http://mirrors.163.com/centos/$releasever/os/$basearch/
    #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
    gpgcheck=1
    gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
    #released updates 
    [updates]
    name=CentOS-$releasever - Updates - 163.com
    baseurl=http://mirrors.163.com/centos/$releasever/updates/$basearch/
    #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
    gpgcheck=1
    gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
    #additional packages that may be useful
    [extras]
    name=CentOS-$releasever - Extras - 163.com
    baseurl=http://mirrors.163.com/centos/$releasever/extras/$basearch/
    #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
    gpgcheck=1
    gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
    #additional packages that extend functionality of existing packages
    [centosplus]
    name=CentOS-$releasever - Plus - 163.com
    baseurl=http://mirrors.163.com/centos/$releasever/centosplus/$basearch/
    #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
    gpgcheck=1
    enabled=0
    gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
    #contrib - packages by Centos Users
    [contrib]
    name=CentOS-$releasever - Contrib - 163.com
    baseurl=http://mirrors.163.com/centos/$releasever/contrib/$basearch/
    #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib
    gpgcheck=1
    enabled=0
    gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6