centos 7 中service iptables save 指令使用失败的解决方案

使用 service iptables save 时显示

[root@localhost ~]# service iptables save
The service command supports only basic LSB actions (start, stop, restart, try-restart, reload, force-reload, status). For other actions, please try to use systemctl.

使用 yum install iptables-services 安装或更新服务

[root@localhost ~]# yum install iptables-services

安装成功后，在执行 service iptables save。

[root@localhost ~]# service iptables save
iptables: Saving firewall rules to /etc/sysconfig/iptables:[  OK  ]