hadoop 2.7.3

修改主机名

/etc/sysconfig/network 把hostname栏目修改

[root@slave2 ~]# cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=slave2

设置主机表
对于windows主机名有一个主机表来控制，linux下面也有。位置在/etc/hosts下面

[root@slave2 ~]# cat /etc/hosts
127.0.0.1	slave2 localhost.localdomain localhost
::1		localhost6.localdomain6 localhost6
192.168.152.39 master
192.168.152.29 slave
192.168.152.45 slave2

ubuntu下修改主机名查看：https://my.oschina.net/duanvincent/blog/919444