错误:在Fedora中使用dnf升级系统时，GPG检查失败

Question

今天早些时候，当我试图升级Fedora 26服务器时，在下载软件包后收到了以下错误消息：

warning: /var/cache/dnf/forensics-5e8452ee3a114fbe/packages/protobuf-c-1.3.0-1.fc26.x86_64.rpm: Header V4 RSA/SHA1 Signature, key ID 87e360b8: NOKEY
Importing GPG key 0x87E360B8:
Userid     : "CERT Forensics Operations and Investivations Team <forensics@cert.org>"
 Fingerprint: 26A0 829D 5C01 FC51 C304 9037 E97F 3E0A 87E3 60B8
 From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-cert-forensics-2018-04-07
Is this ok [y/N]: n
Didn't install any keys
The downloaded packages were saved in cache until the next successful transaction.
You can remove cached packages by executing 'dnf clean packages'.
Error: GPG check FAILED

因此，我中止了升级，并尝试dnf clean packages和重新下载，但我仍然得到同样的错误。

看来打包的protobuf没有有效的签名，所以dnf不能继续，对吗？

Answer 1

但是..。你说“不”：

Is this ok [y/N]: n

...when要求安装密钥！

试着用yes (y)代替！

Answer 2

使用此命令解决以下问题：dnf update --nogpgcheck

Answer 3

我收到以下信息

Package code-1.40.1-1573664332.el7.x86_64.rpm is not signed
The downloaded packages were saved in cache until the next successful transaction.
You can remove cached packages by executing 'dnf clean packages'.
Error: GPG check FAILED

所以code包没有签名。

让我们看看哪个回购提供了它：

dnf provides code | grep "Repo" | sort | uniq

Repo        : code
Repo        : @System

我可以继续禁用code存储库：

sudo dnf update --refresh --verbose --disablerepo code