GPG错误:执行apt键的未知错误

Question

先给点背景..。

在Raspberry 4上安装了Ubuntu20.04.2LTS(GNU/Linux5.4.0-1029-raspi aarch64)。(这不是一个码头容器)。首先要确保现场和系统时钟的设置正确。从apt那里得到了最新的消息。通过在线脚本安装PiHole和PiVPN。确保无人值守-升级被正确地设置为只是安全更新。几个星期以来，一切都很完美。

今天，我随机地去检查了PiHole网络管理员，发现了一个500个内部服务器错误。SSH进入RPi，只是打算尝试重新启动，但决定先运行apt并查找更新。现在，我们都了解了，下面是我使用的命令，然后是它们的输出。任何帮助都将不胜感激。只有我能找到的东西是特定于码头集装箱和另外一个帖子，这似乎是几乎相同的问题，但从来没有得到任何人的一个答复。希望我没那么倒霉。

注意:为了避免看起来像垃圾邮件，我用< URL >替换了所有URL。它们最初都是http://ports.ubuntu.com/ubuntu-ports。

sudo apt update

Hit:1 <URL> focal InRelease
Get:2 <URL> focal-updates InRelease [114 kB]
Err:1 <URL> focal InRelease
  Unknown error executing apt-key
Get:3 <URL> focal-backports InRelease [101 kB]
Err:2 <URL> focal-updates InRelease
  Unknown error executing apt-key
Get:4 <URL> focal-security InRelease [109 kB]
Err:3 <URL> focal-backports InRelease
  Unknown error executing apt-key
Err:4 <URL> focal-security InRelease
  Unknown error executing apt-key
Fetched 324 kB in 1s (221 kB/s)
Reading package lists... Error!
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: <URL> focal InRelease: Unknown error executing apt-key
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: <URL> focal-updates InRelease: Unknown error executing apt-key
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: <URL> focal-backports InRelease: Unknown error executing apt-key
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: <URL> focal-security InRelease: Unknown error executing apt-key
W: Failed to fetch <URL>/dists/focal/InRelease  Unknown error executing apt-key
W: Failed to fetch <URL>/dists/focal-updates/InRelease  Unknown error executing apt-key
W: Failed to fetch <URL>/dists/focal-backports/InRelease  Unknown error executing apt-key
W: Failed to fetch <URL>/dists/focal-security/InRelease  Unknown error executing apt-key
W: Some index files failed to download. They have been ignored, or old ones used instead.
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/ports.ubuntu.com_ubuntu-ports_dists_focal_universe_i18n_Translation-en
E: The package lists or status file could not be parsed or opened.

sudo apt clean
sudo apt-get clean
sudo mv /var/lib/apt/lists /tmp
sudo mkdir -p /var/lib/apt/lists/partial
sudo apt clean
sudo apt update

Get:1 <URL> focal InRelease [265 kB]
Get:2 <URL> focal-updates InRelease [114 kB]
Get:3 <URL> focal-backports InRelease [101 kB]
Err:1 <URL> focal InRelease
  Unknown error executing apt-key
Get:4 <URL> focal-security InRelease [109 kB]
Err:2 <URL> focal-updates InRelease
  Unknown error executing apt-key
Err:3 <URL> focal-backports InRelease
  Unknown error executing apt-key
Err:4 <URL> focal-security InRelease
  Unknown error executing apt-key
Reading package lists... Done
W: GPG error: <URL> focal InRelease: Unknown error executing apt-key
E: The repository '<URL> focal 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.
W: GPG error: <URL> focal-updates InRelease: Unknown error executing apt-key
E: The repository '<URL> focal-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.
W: GPG error: <URL> focal-backports InRelease: Unknown error executing apt-key
E: The repository '<URL> focal-backports 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.
W: GPG error: <URL> focal-security InRelease: Unknown error executing apt-key
E: The repository '<URL> focal-security 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.

Answer 1

在我的例子中，cat文件被销毁了。当恢复cat时，apt也变得正常。

Answer 2

试试sudo ldconfig /usr/bin/gpg。请参阅：https://unix.stackexchange.com/a/677711/114401

对我起作用了。sudo apt update现在又开始工作了。