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divB
Asked: 2020-03-21 16:01:12 +0800 CST

apt 假装密钥不可用。不对

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我删除了 /var/lib/apt 和 /var/cache/apt 因为我无法摆脱 apt 的奇怪问题。

现在我总是得到：

Get:1 http://security-cdn.debian.org buster/updates InRelease [65.4 kB]
Err:1 http://security-cdn.debian.org buster/updates InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY AA8E81B4331F7F50 NO_PUBKEY 112695A0E562B32A
Reading package lists... Done
W: GPG error: http://security-cdn.debian.org buster/updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY AA8E81B4331F7F50 NO_PUBKEY 112695A0E562B32A
E: The repository 'http://security.debian.org buster/updates InRelease' is not signed.
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.

这显然不是真的。但是好的，删除 /etc/apt/trusted.gpg 并重新开始：

# rm /etc/apt/trusted.gpg
# apt-key adv --keyserver pgp.mit.edu --recv-keys AA8E81B4331F7F50
Executing: /tmp/apt-key-gpghome.DwxpIbllfu/gpg.1.sh --keyserver pgp.mit.edu --recv-keys AA8E81B4331F7F50
gpg: key EDA0D2388AE22BA9: public key "Debian Security Archive Automatic Signing Key (9/stretch) <[email protected]>" imported
gpg: Total number processed: 1
gpg:               imported: 1
# apt-key adv --keyserver pgp.mit.edu --recv-keys 112695A0E562B32A
Executing: /tmp/apt-key-gpghome.TFiPCm4ThF/gpg.1.sh --keyserver pgp.mit.edu --recv-keys 112695A0E562B32A
gpg: key 4DFAB270CAA96DFA: public key "Debian Security Archive Automatic Signing Key (10/buster) <[email protected]>" imported
gpg: Total number processed: 1
gpg:               imported: 1
# apt-key list
/etc/apt/trusted.gpg
--------------------
pub   rsa4096 2017-05-22 [SC] [expires: 2025-05-20]
      6ED6 F5CB 5FA6 FB2F 460A  E88E EDA0 D238 8AE2 2BA9
uid           [ unknown] Debian Security Archive Automatic Signing Key (9/stretch) <[email protected]>
sub   rsa4096 2017-05-22 [S] [expires: 2025-05-20]

pub   rsa4096 2019-04-14 [SC] [expires: 2027-04-12]
      5E61 B217 265D A980 7A23  C5FF 4DFA B270 CAA9 6DFA
uid           [ unknown] Debian Security Archive Automatic Signing Key (10/buster) <[email protected]>
sub   rsa4096 2019-04-14 [S] [expires: 2027-04-12]

# apt update
Get:1 http://security-cdn.debian.org buster/updates InRelease [65.4 kB]
Err:1 http://security-cdn.debian.org buster/updates InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY AA8E81B4331F7F50 NO_PUBKEY 112695A0E562B32A
Reading package lists... Done
W: GPG error: http://security-cdn.debian.org buster/updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY AA8E81B4331F7F50 NO_PUBKEY 112695A0E562B32A
E: The repository 'http://security.debian.org buster/updates InRelease' is not signed.
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.

Apt 只是显示远离现实的信息。它在撒谎！这个怎么可能？

PS：我应该说我在删除它们之前从 /var/lib/apt 和 /var/apt/cache 创建了一个备份。当我将备份复制回来时，没有任何变化。所以似乎有别的东西坏了。

PSS：我还删除了 /etc/apt、/var/lib/apt、/var/cache/apt 并通过“dpkg -i apt_1.8.2_amd64.deb”重新安装了 apt。所有目录都是从头开始重新创建的，但 apt update 仍然失败并出现同样的错误！

linux debian

1 个回答

  1. Best Answer

    一般来说，简单地删除系统目录并不是一个好主意。如果你需要清理一个包，最好清除它然后重新安装它。有可能您的系统处于现在只能手动修复的状态，但我将尝试提供可能有效的最简单的解决方案。

    要获得 Debian 的正确密钥，您应该清除并重新安装debian-archive-keyring软件包。该软件包在适当的位置提供了所有 Debian 存档密钥，并正确安装它们以供apt使用。这些密钥存在/etc/apt并且是正常运行所必需的。

    • 2

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