Debian更新出错，提示E: The repository ‘http://security.debian.org bullseye/updates Release’ does not have a Release file.

一般我们拿到服务器登录SSH之后，会需要更新源确保软件的最新版本。但是我们在更新 Debian之后有报错提示E: The repository ‘http://security.debian.org bullseye/updates Release’ does not have a Release file.

这个到底是什么问题呢？镜像的源问题，我们需要更换。

root@itbulucom:~# apt update
Hit:1 http://deb.debian.org/debian bullseye InRelease
Hit:2 http://deb.debian.org/debian bullseye-updates InRelease
Hit:3 http://deb.debian.org/debian bullseye-backports InRelease
Ign:4 http://security.debian.org bullseye/updates InRelease
Err:5 http://security.debian.org bullseye/updates Release

404 Not Found [IP: 151.101.26.132 80]

Reading package lists... Done

E: The repository 'http://security.debian.org bullseye/updates Release' does not have a Release file.

N: Updating from such a repository can't be done securely, and is therefore disabled by default.

N: See apt-secure(8) manpage for repository creation and user configuration details.

问题在于源的地址的问题，我们需要替换

debhttp://deb.debian.org/debian bullseye main
deb http://deb.debian.org/debian-security/ bullseye-security main
deb http://deb.debian.org/debian bullseye-updates main

请修改下源(/etc/apt/source.list)，替换成下面的吧：

deb http://mirrors.linode.com/debian bullseye main
deb-src http://mirrors.linode.com/debian bullseye main
deb http://mirrors.linode.com/debian-security/ bullseye-security main
deb-src http://mirrors.linode.com/debian-security/ bullseye-security main
deb http://mirrors.linode.com/debian bullseye-updates main
deb-src http://mirrors.linode.com/debian bullseye-updates main

如果我们是国内的服务器，可以用国内镜像源。

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