错误：在 Fedora 中使用 dnf 升级系统时 GPG 检查失败

Question

当我今天早些时候尝试升级 Fedora 26 服务器时，我在下载软件包后收到此错误消息：

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

所以我中止了升级，我尝试重新dnf clean packages下载，但我仍然遇到同样的错误。

似乎protobuf打包的没有有效签名所以dnf无法继续，对吗？

Answer 1

但是......你说“不”：

Is this ok [y/N]: n

...当要求安装密钥时！

尝试用 yes ( y) 代替！

Answer 2

使用此命令解决此问题： dnf update --nogpgcheck