.环境准备192.168.200.41 cpu:2.6GHZ*2,ram:16G,rom:500G hostname: hadoop1192.168.200.42 cpu:2.6GHZ*2,ram:16G,rom:500G hostname: hadoop2192.168.200.43 cpu:2.6GHZ*2,ram:16G,rom:500G hostname: hadoop3192.168.200.44 cpu:2.6GHZ*2,ram:16G,rom:500G hostname: hadoop4192.168.200.45 cpu:2.6GHZ*2,ram:16G,rom:500G hostname: hadoop5root/iscs2016关闭防火墙:chkconfig iptables off,重启生效关闭SELINUX:使用getenforce命令查看是否关闭,关闭前显示为enforcing。修改/etc/selinux/config 文件将SELINUX=enforcing改为SELINUX=disabled,