配置centos7本地yum源

1.查看系统本身存在的版本 rpm -qa | grep yum 2.卸载centos7上存在的yum安装源包 rpm -e 源包 --nodeps 3.下载yum源包（http://mirrors.163.com/centos/7/os/x86_64/Packages/） yum-metadata-parser-1.1.4-10.el7.x86_64 PackageKit-yum-1.0.7-6.el7.centos.x86_64 yum-utils-1.1.31-40.el7.noarch 下方两个一起装 yum-plugin-fastestmirror-1.1.31-40.el7.noarch yum-langpacks-0.4.2-7.el7.noarch yum-3.4.3-150.el7.centos.noarch yum-rhn-plugin-2.0.1-6.el7.noarch 4.安装yum源包 rpm -ivh yum* 5.创建配置文件（/etc/yum.repos.d/CentOS-Base.repo） vi /etc/yum.repos.d/CentOS-Base.repo [base] name=CentOS-$releasever - Base - 163.com #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch;=$basearch&repo=os baseurl=http://mirrors.163.com/centos/（系统版本号）7/os/$basearch/ gpgcheck=1 gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7 #released updates [updates] name=CentOS-$releasever - Updates - 163.com #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch;=$basearch&repo=updates baseurl=http://mirrors.163.com/centos/7/updates/$basearch/ gpgcheck=1 gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7 #additional packages that may be useful [extras] name=CentOS-$releasever - Extras - 163.com #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch;=$basearch&repo=extras baseurl=http://mirrors.163.com/centos/7/extras/$basearch/ gpgcheck=1 gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7 #additional packages that extend functionality of existing packages [centosplus] name=$releasever - Plus - 163.com baseurl=http://mirrors.163.com/centos/7/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7 每一个baseurl的centos后都改成自己系统的版本号 6.执行命令 yum clean all yum makecache yum install telnet