关于socket模块获取ip失败报错

问题：socket模块获取ip失败报错

In [64]: import socket

In [71]: socket.gethostname()
Out[71]: 'web01'

In [72]: host_name = socket.gethostname()

In [73]: socket.gethostbyname(host_name)
---------------------------------------------------------------------------
gaierror Traceback (most recent call last)
<ipython-input-73-52ba2e5a9213> in <module>()
----> 1 socket.gethostbyname(host_name)

gaierror: [Errno -2] Name or service not known

　

解决办法：
修改配置文件/etc/hosts，增加主机名与IP解析，如下：10.0.0.22   web01

(venv1) [root@web01 bin]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
10.0.0.22 web01

　　

即可解决！！！！！

In [74]: socket.gethostbyname(host_name)
Out[74]: '10.0.0.22'