Linux系统yum源更换安装2

方式一：

sudo mkdir /etc/yum.repos.d/backup
sudo mv /etc/yum.repos.d/CentOS-* /etc/yum.repos.d/backup/
sudo curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.4.2105.repo
sudo yum clean all
sudo yum makecache
sudo yum repolist

方式二

Centos5地址：
[root@opt ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

Centos6地址：
[root@opt ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

Centos7地址：
[root@opt ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo


wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-8.repo
sudo yum clean all
sudo yum makecache
sudo yum repolist