centos关闭防火墙和关闭服务自启动

防火墙状态

查看防火墙运行状态

systemctl status firewalld.service

如果是关闭状态

● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:firewalld(1)

如果是开启状态

● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: active (running) since Wed 2020-09-02 10:39:22 CST; 1s ago
     Docs: man:firewalld(1)
 Main PID: 7369 (firewalld)
   CGroup: /system.slice/firewalld.service
           ├─7369 /usr/bin/python2 -Es /usr/sbin/firewalld --nofork --nopid
           └─7478 /usr/sbin/iptables-restore -w -n

Sep 02 10:39:21 ds1.zoen.com systemd[1]: Starting firewalld - dynamic firewall daemon...
Sep 02 10:39:22 ds1.zoen.com systemd[1]: Started firewalld - dynamic firewall daemon.

开关防火墙

开启防火墙

systemctl start firewalld

关闭防火墙

systemctl stop firewalld

重启防火墙

systemctl restart firewalld

防火墙开机自启动服务

设置开机自启动

systemctl enable firewalld

关闭开机自启动

systemctl disable firewalld

查看是否开机自启动

systemctl is-enabled firewalld

system补充

我们对service和chkconfig两个命令都不陌生，systemctl 是管制服务的主要工具， 它整合了chkconfig 与 service功能于一体。

systemctl is-enabled iptables.service
systemctl is-enabled servicename.service #查询服务是否开机启动
systemctl enable *.service #开机运行服务
systemctl disable *.service #取消开机运行
systemctl start *.service #启动服务
systemctl stop *.service #停止服务
systemctl restart *.service #重启服务
systemctl reload *.service #重新加载服务配置文件
systemctl status *.service #查询服务运行状态
systemctl --failed #显示启动失败的服务