随着 Debian Buster 10.3 的发布，Debian Buster 日趋稳定。如果在生产上使用了 Debian 9 的系统，现在是可以安全的，灰度升级到 Debian Buster 做前期验证了。这里我们整理一下国内较知名的镜像站点，共大家在生产环境中使用。
如何更新系统安装源
一般我们修改 /etc/apt/sources.list 文件，将 Debian 的默认源地址改成新的地址即可，比如将 http://deb.debian.org 改成 https://mirrors.163.com，可使用以下这条命令：
sed -i 's#http://deb.debian.org#https://mirrors.163.com#g' /etc/apt/sources.list
注意，如果安装源是 https 协议的，我们还需要安装软件包 apt-transport-https。 执行 apt-get install apt-transport-https，随后再执行 apt-get update 即可。
常用安装源站点列表
163镜像站
deb http://mirrors.163.com/debian/ buster main non-free contrib deb http://mirrors.163.com/debian/ buster-updates main non-free contrib deb http://mirrors.163.com/debian/ buster-backports main non-free contrib deb http://mirrors.163.com/debian-security/ buster/updates main non-free contrib deb-src http://mirrors.163.com/debian/ buster main non-free contrib deb-src http://mirrors.163.com/debian/ buster-updates main non-free contrib deb-src http://mirrors.163.com/debian/ buster-backports main non-free contrib deb-src http://mirrors.163.com/debian-security/ buster/updates main non-free contrib
华为云镜像站
deb https://mirrors.huaweicloud.com/debian/ buster main contrib non-free deb https://mirrors.huaweicloud.com/debian/ buster-updates main contrib non-free deb https://mirrors.huaweicloud.com/debian/ buster-backports main contrib non-free deb https://mirrors.huaweicloud.com/debian-security/ buster/updates main contrib non-free deb-src https://mirrors.huaweicloud.com/debian/ buster main contrib non-free deb-src https://mirrors.huaweicloud.com/debian/ buster-updates main contrib non-free deb-src https://mirrors.huaweicloud.com/debian/ buster-backports main contrib non-free
腾讯云镜像站
deb http://mirrors.cloud.tencent.com/debian/ buster main non-free contrib deb http://mirrors.cloud.tencent.com/debian-security buster/updates main deb http://mirrors.cloud.tencent.com/debian/ buster-updates main non-free contrib deb http://mirrors.cloud.tencent.com/debian/ buster-backports main non-free contrib deb-src http://mirrors.cloud.tencent.com/debian-security buster/updates main deb-src http://mirrors.cloud.tencent.com/debian/ buster main non-free contrib deb-src http://mirrors.cloud.tencent.com/debian/ buster-updates main non-free contrib deb-src http://mirrors.cloud.tencent.com/debian/ buster-backports main non-free contrib
中科大镜像站
deb https://mirrors.ustc.edu.cn/debian/ buster main contrib non-free deb https://mirrors.ustc.edu.cn/debian/ buster-updates main contrib non-free deb https://mirrors.ustc.edu.cn/debian/ buster-backports main contrib non-free deb https://mirrors.ustc.edu.cn/debian-security/ buster/updates main contrib non-free deb-src https://mirrors.ustc.edu.cn/debian/ buster main contrib non-free deb-src https://mirrors.ustc.edu.cn/debian/ buster-updates main contrib non-free deb-src https://mirrors.ustc.edu.cn/debian/ buster-backports main contrib non-free deb-src https://mirrors.ustc.edu.cn/debian-security/ buster/updates main contrib non-free
阿里云镜像站
deb http://mirrors.aliyun.com/debian/ buster main non-free contrib deb http://mirrors.aliyun.com/debian-security buster/updates main deb http://mirrors.aliyun.com/debian/ buster-updates main non-free contrib deb http://mirrors.aliyun.com/debian/ buster-backports main non-free contrib deb-src http://mirrors.aliyun.com/debian-security buster/updates main deb-src http://mirrors.aliyun.com/debian/ buster main non-free contrib deb-src http://mirrors.aliyun.com/debian/ buster-updates main non-free contrib deb-src http://mirrors.aliyun.com/debian/ buster-backports main non-free contrib
清华大学镜像站
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ buster main contrib non-free deb https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-updates main contrib non-free deb https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-backports main contrib non-free deb https://mirrors.tuna.tsinghua.edu.cn/debian-security/ buster/updates main contrib non-free deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ buster main contrib non-free deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-updates main contrib non-free deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-backports main contrib non-free deb-src https://mirrors.tuna.tsinghua.edu.cn/debian-security/ buster/updates main contrib non-free
兰州大学镜像站
deb http://mirror.lzu.edu.cn/debian stable main contrib non-free deb http://mirror.lzu.edu.cn/debian stable-updates main contrib non-free deb http://mirror.lzu.edu.cn/debian/ buster-backports main contrib non-free deb http://mirror.lzu.edu.cn/debian-security/ buster/updates main contrib non-free deb-src http://mirror.lzu.edu.cn/debian stable main contrib non-free deb-src http://mirror.lzu.edu.cn/debian stable-updates main contrib non-free deb-src http://mirror.lzu.edu.cn/debian/ buster-backports main contrib non-free deb-src http://mirror.lzu.edu.cn/debian-security/ buster/updates main contrib non-free
上海交大镜像站
deb https://mirror.sjtu.edu.cn/debian/ buster main contrib non-free deb https://mirror.sjtu.edu.cn/debian/ buster-updates main contrib non-free deb https://mirror.sjtu.edu.cn/debian/ buster-backports main contrib non-free deb https://mirror.sjtu.edu.cn/debian-security/ buster/updates main contrib non-free deb-src https://mirror.sjtu.edu.cn/debian/ buster-updates main contrib non-free deb-src https://mirror.sjtu.edu.cn/debian/ buster-backports main contrib non-free deb-src https://mirror.sjtu.edu.cn/debian/ buster main contrib non-free deb-src https://mirror.sjtu.edu.cn/debian-security/ buster/updates main contrib non-free
附上官方全球镜像站列表地址：https://www.debian.org/mirror/list
