centos8 排查firewalld，iptables，selinux

systemctl status firewalld

systemctl status iptables

getenforce

对应关闭命令

systemctl stop firewalld

systemctl stop iptables

setenforce 0

禁止开机启动命令

systemctl disable –now firewalld

systemctl disable –now iptables

selinux禁止需要修改配置文件

vi /etc/selinux/config

设置配置项为:SELINUX=disabled

说明：默认值是: #SELINUX=enforcing