fabric2使用私钥

#!/usr/bin/env python
#-*- coding: utf-8 -*-

from fabric2 import Connection

c = Connection('192.168.1.666',connect_kwargs={"key_filename": "privatekey"})


c.local('touch test3.txt')


#with c.cd('/home/gaiman/productmicro'):
    #c.run('git pull origin master')

with c.cd('/home/gaiman/productmicro'):
    c.run('touch test4.txt')

  File "/usr/local/lib/python3.6/dist-packages/paramiko/pkey.py", line 289, in _read_private_key
    raise SSHException("not a valid " + tag + " private key file")
paramiko.ssh_exception.SSHException: not a valid RSA private key file

但是私钥在脚本的同一个文件夹中。

我不明白