yum因为各种问题无法使用,需要卸载重装:
检查当前版本:
rpm -qa yum
卸载:
rpm -qa |grep yum |xargs rpm -e --nodeps
进入指定目录,下载相对应文件(先查看系统版本,再下载对应的版本,这里下载的是CentOS7版本):
cd /usr/local/src 使用阿里源: wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-3.4.3-168.el7.centos.noarch.rpm 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-plugin-fastestmirror-1.1.31-54.el7_8.noarch.rpm 获取用其他源: wget http://mirror.centos.org/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
安装:
rpm -ivh yum-*
查看是否已经安装成功:
rpm -qa yum
导入证书:
rpm --import http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-7