使用Fabric连接到aws-ec2时禁用密码提示。

Question

当与Fabric连接时，我会被提示输入密码，当手动连接时，我什么也得不到--只是连接。

你知道会有什么问题吗？

我使用的是基于ubuntu 16的aws ec2实例。在我的计算机上，我正在运行运行以下代码的"fab测试“：

from fabric.api import *
import paramiko
paramiko.util.log_to_file("fab.log")
env.key_filename = '~/.ssh/etay-new.pem'
env.hosts = ['my.real-ip.trust.me']
env.user = 'ubuntu'

def test():
    run('ls');

我检查了sshd_config，ChallengeResponseAuthentication和PasswordAuthentication设置为NO。

fab.log：

DEB [20170518-00:12:30.497] thr=1   paramiko.transport: starting thread (client mode): 0x558bbe50L
INF [20170518-00:12:30.742] thr=1   paramiko.transport: Connected (version 2.0, client OpenSSH_7.2p2)
DEB [20170518-00:12:30.969] thr=1   paramiko.transport: kex algos:['curve25519-sha256@libssh.org', 'ecdh-sha2-nistp256', 'ecdh-sha2-nistp384', 'ecdh-sha2-nistp521', 'diffie-hellman-group-exchange-sha256', 'diffie-hellman-group14-sha1'] server key:['ssh-rsa', 'rsa-sha2-512', 'rsa-sha2-256', 'ecdsa-sha2-nistp256', 'ssh-ed25519'] client encrypt:['chacha20-poly1305@openssh.com', 'aes128-ctr', 'aes192-ctr', 'aes256-ctr', 'aes128-gcm@openssh.com', 'aes256-gcm@openssh.com'] server encrypt:['chacha20-poly1305@openssh.com', 'aes128-ctr', 'aes192-ctr', 'aes256-ctr', 'aes128-gcm@openssh.com', 'aes256-gcm@openssh.com'] client mac:['umac-64-etm@openssh.com', 'umac-128-etm@openssh.com', 'hmac-sha2-256-etm@openssh.com', 'hmac-sha2-512-etm@openssh.com', 'hmac-sha1-etm@openssh.com', 'umac-64@openssh.com', 'umac-128@openssh.com', 'hmac-sha2-256', 'hmac-sha2-512', 'hmac-sha1'] server mac:['umac-64-etm@openssh.com', 'umac-128-etm@openssh.com', 'hmac-sha2-256-etm@openssh.com', 'hmac-sha2-512-etm@openssh.com', 'hmac-sha1-etm@openssh.com', 'umac-64@openssh.com', 'umac-128@openssh.com', 'hmac-sha2-256', 'hmac-sha2-512', 'hmac-sha1'] client compress:['none', 'zlib@openssh.com'] server compress:['none', 'zlib@openssh.com'] client lang:[''] server lang:[''] kex follows?False
ERR [20170518-00:12:30.969] thr=1   paramiko.transport: Exception: Incompatible ssh peer (no acceptable kex algorithm)
ERR [20170518-00:12:30.969] thr=1   paramiko.transport: Traceback (most recent call last):
ERR [20170518-00:12:30.969] thr=1   paramiko.transport:   File "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line 1585, in run
ERR [20170518-00:12:30.969] thr=1   paramiko.transport:     self._handler_table[ptype](self, m)
ERR [20170518-00:12:30.970] thr=1   paramiko.transport:   File "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line 1664, in _negotiate_keys
ERR [20170518-00:12:30.970] thr=1   paramiko.transport:     self._parse_kex_init(m)
ERR [20170518-00:12:30.970] thr=1   paramiko.transport:   File "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line 1779, in _parse_kex_init
ERR [20170518-00:12:30.970] thr=1   paramiko.transport:     raise SSHException('Incompatible ssh peer (no acceptable kex algorithm)')
ERR [20170518-00:12:30.970] thr=1   paramiko.transport: SSHException: Incompatible ssh peer (no acceptable kex algorithm)
ERR [20170518-00:12:30.970] thr=1   paramiko.transport: 

知道该怎么做吗？我不想被提示输入密码。

谢谢你，埃泰

Answer 1

请将paramiko版本更新为最新的2.1版本。

Ubuntu 16有一个更新的sshd版本，paramiko 1.1不支持它。