Python操作Hdfs，upload报错erron-3

我尝试过hdfs和pyhdfs库操作hdfs，不过两种方式都是在操作upload时报错，在网上找不到答案，希望有大神可以指点一下。
搭hdfs的同事告诉我，操作是用9000的端口，不过不知道为什么9000端口报404，操作50070没问题，可以新建文件夹，查看目录。

 >>> from hdfs import *
>>> client = Client("http://192.168.xx.xxx:50070")
>>> client.list("/")
[u'tmp', u'user']
>>> client.upload("/tmp/kenvs", "/home/test.txt")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/ubuntu1604/.local/lib/python2.7/site-packages/hdfs/client.py", line 605, in upload
    raise err
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x7f48193a2690>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution