查看防火墙状态
[hadoop@master ~]$ firewall-cmd --state
running
关闭防火墙
[hadoop@master ~]$ systemctl stop firewalld.service
禁用防火墙
[hadoop@master ~]$ systemctl disable firewalld.service
查看防火墙状态
[hadoop@master ~]$ firewall-cmd --state
running
关闭防火墙
[hadoop@master ~]$ systemctl stop firewalld.service
禁用防火墙
[hadoop@master ~]$ systemctl disable firewalld.service