cat /etc/redhat-release //查看linux版本
systemctl stop firewalld //关闭防火墙
systemctl disable firewalld //禁止开机启动
getenforce //查看selinux状态,如果是开启的可以用下面命令关闭
vim /etc/selinux/config //将SELINUX设置为disabled
systemctl start xxx //启动某服务
systemctl enable xxx //将某服务添加到开机自启动