我当前在 beaglebone black 上运行 debian 10 buster，当我尝试使用命令“sudo apt-get update”时出现以下错误：
Err:1 http://repos.rcn-ee.com/debian buster InRelease
Temporary failure resolving 'repos.rcn-ee.com'
Err:2 http://deb.debian.org/debian buster InRelease
Temporary failure resolving 'deb.debian.org'
Err:3 http://deb.debian.org/debian buster-updates InRelease
Temporary failure resolving 'deb.debian.org'
Err:4 http://deb.debian.org/debian-security buster/updates InRelease
Temporary failure resolving 'deb.debian.org'
Reading package lists... Done
W: Failed to fetch http://deb.debian.org/debian/dists/buster/InRelease Temporar y failure resolving 'deb.debian.org'
W: Failed to fetch http://deb.debian.org/debian/dists/buster-updates/InRelease Temporary failure resolving 'deb.debian.org'
W: Failed to fetch http://deb.debian.org/debian-security/dists/buster/updates/In Release Temporary failure resolving 'deb.debian.org'
W: Failed to fetch http://repos.rcn-ee.com/debian/dists/buster/InRelease Tempor ary failure resolving 'repos.rcn-ee.com'
W: Some index files failed to download. They have been ignored, or old ones used instead.
我认为存储库可能存在问题。目前，在我的 /ect/apt/sources.list 文件中，我有以下内容：
deb http://deb.debian.org/debian buster main contrib non-free
deb http://deb.debian.org/debian buster-updates main contrib non-free
deb http://deb.debian.org/debian-security buster/updates main contrib non-free
deb [arch=armhf] http://repos.rcn-ee.com/debian/ buster main
我将非常感激任何能帮助我解决该问题的事情，谢谢。
答案1
您的问题是您的 DNS 服务器/设置没有解析 FQDN 名称deb.debian.org，并且repos.rcn-ee.com
检查您的 DNS 设置并尝试apt update再次运行。