If centOS7, modify the host name of the path in the / etc / hostname under
If centOS6, modify the host name of the path in the / etc / network down
Be a model modified to hadoop999
Another case is the original hostname is localhost.localhostdomain, then if the IP system is 192.168.1.100, and hosts present in the linux system configured IP alias is hadoop100, such as 192.168.1.100 hadoop100. Then the host name will be changed to hadoop100
Just hostname is hadoop999 just do a demonstration, and now into hadoop100
The following set of hosts configuration windows
After configuration using hadoop100 to ping
Find ping hadoop100 is ping 192.168.1.100, because the hosts are configured alias