The service command supports only basic LSB actions

（1）报错

开放端口 /sbin/iptables -I INPUT -p tcp --dport 15672 -j ACCEPT
保存的时候报错如下：

[root@VM_0_17_centos rabbitmq]# 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.

（2）解决方案

systemctl stop firewalld 关闭防火墙
yum install iptables-services 安装或更新服务
再使用systemctl enable iptables 启动iptables
最后 systemctl start iptables 打开iptables

再执行service iptables save