我不太明白socket.getfqdn()在主机上使用时所看到的内容。这是我所看到的，然后我会解释一下：
[root@myawesomehost.iscool ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
[root@myawesomehost.iscool ~]#
[root@myawesomehost.iscool ~]#
[root@myawesomehost.iscool ~]# python
Python 2.6.6 (r266:84292, Aug 18 2016, 15:13:37)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>
>>> import socket
>>> socket.getfqdn()
'myawesomehost.iscool.ny.domain.com'
>>> socket.gethostname()
'myawesomehost.iscool.ny.domain.com'
>>>
[1]+ Stopped python
[root@myawesomehost.iscool ~]# vim /etc/hosts
[root@myawesomehost.iscool ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 myawesomehost.iscool.ny.domain.com
::1 localhost localhost.localdomain localhost6 …