CentOs启动防火墙查询等

firewall-cmd --query-port=6376/tcp //查询该端口6376是否开放，返回no
firewall-cmd --zone=public --add-port=6376/tcp --permanent //将该端口改为永久开放，返回success
firewall-cmd --reload //重启防火墙
firewall-cmd --query-port=6376/tcp //再次查询，返回yes