linux deploy换国内源

我的Linux deploy版本是Ubuntu 18.0.4，架构选的是armhf，感觉官方源速度太慢，于是打算换国内源，网上搜了Ubuntu 18.0.4的换源教程，但执行

sudo apt update

时会报错，

无法下载 https://mirrors.ustc.edu.cn/ubuntu/dists/bionic/main/binary-armhf/Packages  404  Not Found

网上查了一下发现一篇文章 Ubuntu支持armhf 的国内源

原来是我的源选错了，重新选用下面的源

deb http://mirrors.ustc.edu.cn/ubuntu-ports/ bionic main multiverse restricted universe
deb http://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-backports main multiverse restricted universe
deb http://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-proposed main multiverse restricted universe
deb http://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-security main multiverse restricted universe
deb http://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-updates main multiverse restricted universe
deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ bionic main multiverse restricted universe
deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-backports main multiverse restricted universe
deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-proposed main multiverse restricted universe
deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-security main multiverse restricted universe
deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ bionic-updates main multiverse restricted universe

然后执行

sudo apt update
sudo apt upgrade

终于成了。