1.查看master IP地址
master@master-VirtualBox:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 08:00:27:14:8a:71
inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0
master@master-VirtualBox:~$ sudo gedit /etc/hostname
Master
master@master-VirtualBox:~$ hostname
master-VirtualBox
重新启动
master@master-VirtualBox:~$sudo shutdown -r now
master@Master:~$ hostname
Master
master@Master:~$ sudo gedit /etc/hosts
10.0.2.15 Master
master@Master:~$ ping Master
PING Master (10.0.2.15) 56(84) bytes of data.
64 bytes from Master (10.0.2.15): icmp_seq=1 ttl=64 time=0.019 ms
64 bytes from Master (10.0.2.15): icmp_seq=2 ttl=64 time=0.036 ms
64 bytes from Master (10.0.2.15): icmp_seq=3 ttl=64 time=0.036 ms
64 bytes from Master (10.0.2.15): icmp_seq=4 ttl=64 time=0.038 ms
2.Slave1
slave1@slave1-VirtualBox:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 08:00:27:7e:1b:f8
inet addr:10.0.3.15 Bcast:10.0.3.255 Mask:255.255.255.0
slave1@slave1-VirtualBox:~$ sudo gedit /etc/hostname
Slave1
3.Slave2