Fedora-27-升级到-Fedora-28-upgrade

#如果安装fail2ban 需要停止
systemctl stop fail2ban;
dnf update -y;
dnf install fedora-upgrade -y;
fedora-upgrade;
#一直回车就可以了
#参考：https://ipsec.in/index.php/2017/11/16/fedora-26-升级-27/
#安装会移除部分默认自动启动
#需要重新配置启动
#升级部分出现假死的情况
#如果有安装fail2ban 建议停止systemctl stop fail2ban;
#systemctl enable nginx;
#systemctl start nginx;