我从Fedora27 直接升级到Fedora28。
sudo dnf upgrade --refresh sudo dnf install dnf-plugin-system-upgrade sudo dnf system-upgrade download --releasever=28 sudo dnf system-upgrade reboot
在'sudo dnf system-upgrade download --releasever=28'过程中,可能会出现
GPG key retrieval failed: [Errno 14] curl#37 - "Couldn't open file /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-x86_64"
或者类似于这样的:
Downloading failed: GPG key retrieval failed: [Errno 14] curl#37 - "Couldn't open file /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-x86_64"
主要原因是rpm-gpg没有找到的原因,可以通过如下命令进行创建,再重新更新的时候,系统会自动进行验证
rpmkeys --import /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-28-x86_64
rpmkeys --import /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-28-primary rpmkeys --import /etc/pki/rpm-gpg/RPM-GPG-KEY-rpmfusion-nonfree-fedora-28
备注:红色字部分可以根据要升级的系统自行进行更改;