查看防火墙状态
[zengjr@hadoop-zengjr ~]$ sudo service iptables status
iptables: Firewall is not running.
关闭防火墙
sudo chkconfig iptables off
开启防火墙
sudo chkconfig iptables on
查看防火墙状态
sudo chkconfig --list|grep iptables
more /etc/inittab
关闭selinux,重启才能生效
sudo vi /etc/sysconfig/selinux
SELINUX=disabled