一、本地源
1、首先将镜像文件挂载到mnt临时挂载目录下
[root@Server01 /]# mount /dev/sr0 /mnt/
2、编辑apt文件
[root@Server01 /]# nano /etc/apt/sources.list
deb [trusted=yes] file:///mnt fou main
3、更新源
[root@Server01 /]# apt-get update
[root@Server01 /]# apt-get upgrade
4、测试
[root@Server01 /]# apt-get install bind9-y
#安装成功就是配置完成二、网络源
1、将 /etc/apt/source.list 中的内容备份或者清除更换上阿里
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse