RedHat Enterprise7 修改成CentOS的yum源

报错

 

 

 

解决

1、将自带的yum卸载掉

 

2、下载centos的yum并安装

wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm

wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-52.el7.noarch.rpm

wget http://rpmfind.net/linux/centos/7.7.1908/os/x86_64/Packages/yum-3.4.3-163.el7.centos.noarch.rpm

注：如提示缺哪一个包再单独安装哪一个

 

 

 

 

[root@rac2 yum.repos.d]# pwd

/etc/yum.repos.d

[root@rac2 yum.repos.d]# mv public-yum-ol7.repo{,.bak}

 

释上图：如gpgcheck=0时，gpgkey可不写

 

 [root@rac2 yum.repos.d]# mount /dev/sr0 /mnt/usb1

 

3、清除yum缓存并重建

 

 

 

 

 

4、yum安装测试