服务器与桌面版本通用
dnf upgrade --refresh
dnf install dnf-plugin-system-upgrade
dnf system-upgrade download --releasever=31
dnf system-upgrade reboot
之后会重启，等待一会就好了
服务器与桌面版本通用
dnf upgrade --refresh
dnf install dnf-plugin-system-upgrade
dnf system-upgrade download --releasever=31
dnf system-upgrade reboot
之后会重启，等待一会就好了