折腾：
【已解决】Mac中运行fab hello出错：No idea what ‘hello’ is!
期间，去参考官网：
和：
试试效果，结果Connection出错：
➜ ~ python
Python 2.7.10 (default, Oct 6 2017, 22:29:07)
[GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.31)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from fabric import Connection
>>> result = Connection('47.x.x.x').run('uname -s', hide=True)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<decorator-gen-3>", line 2, in run
File "/Users/crifan/Library/Python/2.7/lib/python/site-packages/fabric/connection.py", line 29, in opens
self.open()
File "/Users/crifan/Library/Python/2.7/lib/python/site-packages/fabric/connection.py", line 541, in open
self.client.connect(**kwargs)
File "/Users/crifan/Library/Python/2.7/lib/python/site-packages/paramiko/client.py", line 424, in connect
passphrase,
File "/Users/crifan/Library/Python/2.7/lib/python/site-packages/paramiko/client.py", line 714, in _auth
raise saved_exception
paramiko.ssh_exception.AuthenticationException: Authentication failed.
>>>结果感觉目标服务器需要验证才能登录
所以报错。
参考：
fabric2的示例，就不是fabric 1的那种，而是用了Connection去连接远程服务器去操作
而此处，连接服务器又登录出错，所以看看能否解决登录的问题
而此处要连接的服务器，登录不是用密码，而是用密钥。
所以后来自己试了试：
➜ ~ python
Python 2.7.10 (default, Oct 6 2017, 22:29:07)
[GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.31)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from fabric import Connection
>>> c = Connection(host='47.x.x.x', user='username')
>>> result = c.run('uname -s')
Linux果然是可以的。
【总结】
此处Fabric 2.x +的版本中的官网示例中用Connection连接远程服务器的话，自己要明确远程服务器连接时的账号和密码或自动加载密钥，确保服务器host可以正常登录，然后再去：
from fabric import Connection c = Connection(host='47.x.x.x', user='username')
即可正常连接和执行后续操作，比如：
>>> result = c.run('uname -s')
Linux转载请注明：在路上 » 【已解决】fabric的Connection出错：paramiko.ssh_exception.AuthenticationException: Authentication failed