FirewallD is not running

在linux开放6379端口时，提示 FirewallD is not running，发现防火墙没有开启。

问题发现

[root@VM_0_9_centos redis-4.0.8]#  firewall-cmd --zone=public --add-port=6379/tcp --permanent
FirewallD is

查看防火墙状态

[root@VM_0_9_centos redis-4.0.8]# systemctl status firewalld
● 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)

发现当前是dead状态，即防火墙未开启。

开启防火墙

[root@VM_0_9_centos redis-4.0.8]# systemctl start firewalld

没有任何提示，表示开启成功。

检查防火墙状态

[root@VM_0_9_centos redis-4.0.8]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: active (running) since Tue 2020-10-27 16:28:08 CST; 11s ago
     Docs: man:firewalld(1)
 Main PID: 32232 (firewalld)
    Tasks: 2
   Memory: 32.0M
   CGroup: /system.slice/firewalld.service
           └─32232 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid

Oct 27 16:28:08 VM_0_9_centos systemd[1]: Starting firewalld - dynamic firewall daemon...
Oct 27 16:28:08 VM_0_9_centos systemd[1]: Started firewalld - dynamic

防火墙开启成功。

关闭防火墙

[root@VM_0_9_centos redis-4.0.8]# systemctl stop firewalld

再次开放6379端口

[root@VM_0_9_centos redis-4.0.8]# firewall-cmd --zone=public --add-port=6379/tcp --permanent
success

重启防火墙使配置即使生效

[root@VM_0_9_centos redis-4.0.8]# systemctl restart firewalld

查看系统所开放的端口

[root@VM_0_9_centos redis-4.0.8]# firewall-cmd --zone=public --list-ports
6379/tcp

结束！