配置Redhat 7 使用CentOS的YUM源

删除系统中自带的yum程序

rpm -qa|grep yum|xargs rpm -e --nodeps

下载并安装新的yum包。

  • 下载新的yum包：
wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm

wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-3.4.3-150.el7.centos.noarch.rpm

wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-40.el7.noarch.rpm

wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-utils-1.1.31-40.el7.noarch.rpm

wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/python-urlgrabber-3.10-8.el7.noarch.rpm
  • 下载完成后，安装新的yum包
    rpm -ivh *rpm

更换yum源

  • 备份你的原镜像文件，以免出错后可以恢复。
    mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
  • 下载新的CentOS-Base.repo 到/etc/yum.repos.d/
    CentOS 7
    wget -O /etc/yum.repos.d/CentOS-Base.repo ​​http://mirrors.aliyun.com/repo/Centos-7.repo​​
  • 修改CentOS-Base.repo文件中的$releasever全部替换为版本号7.
  • 运行yum makecache生成缓存
yum clean all
yum makecache
yum update
yum list