[Fab-user] Fatal error: Incompatible ssh server

[Randy Karels]

Hello all,

I'm new to fabric and ssh, so I'm sure I'm missing something quite basic.

I'm on osx 10.6 running python 2.6. I installed fabric 0.9 using pip,
and it said everything was installed successfully. The server is
running solaris. I'm able to connect without problem using the normal
ssh commands. My private key is protected with a password, if that
makes a difference.

Trying to run any command via Fabric on the server generates a "Fatal
error: Incompatible ssh server (no acceptable ciphers)" error message.
The fab file is as simple as it gets:

---
from fabric.api import *
env.user = 'user'
env.hosts=['server']

def foo():
    run('pwd')
---

I get the same error when trying to use paramiko directly:

>>> import paramiko
>>> ssh = paramiko.SSHClient()
>>> ssh.connect('server', username='user', password='lol')
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File "/path/to/paramiko/client.py", line 288, in connect
   t.start_client()
 File "/path/to/paramiko/transport.py", line 440, in start_client
   raise e
paramiko.SSHException: Incompatible ssh server (no acceptable ciphers)

---

The log file from paramiko is:

DEBUG:paramiko.transport:starting thread (client mode): 0x748150L
INFO:paramiko.transport:Connected (version 2.0, client Sun_SSH_1.4)
DEBUG:paramiko.transport:
kex algos:['gss-group1-sha1-to-edited',
'diffie-hellman-group-exchange-sha1', 'diffie-hellman-group1-sha1']
server key:['ssh-dss', 'ssh-rsa']
client encrypt:['aes128-ctr', 'aes192-ctr', 'aes256-ctr',
'arcfour128', 'arcfour256', 'arcfour']
server encrypt:['aes128-ctr', 'aes192-ctr', 'aes256-ctr',
'arcfour128', 'arcfour256', 'arcfour']
client mac:['hmac-md5', 'hmac-sha1', 'hmac-sha1-96', 'hmac-md5-96']
server mac:['hmac-md5', 'hmac-sha1', 'hmac-sha1-96', 'hmac-md5-96']
client compress:['none', 'zlib']
server compress:['none', 'zlib']
client lang:[--edited for brevity--]
server lang:[--edited for brevity--]
kex follows?False
ERROR:paramiko.transport:Exception: Incompatible ssh server (no
acceptable ciphers)
ERROR:paramiko.transport:Traceback (most recent call last):
ERROR:paramiko.transport:  File "/path/to/paramiko/transport.py", line
1513, in run
ERROR:paramiko.transport:    self._handler_table[ptype](self, m)
ERROR:paramiko.transport:  File "/path/to/paramiko/transport.py", line
1585, in _negotiate_keys
ERROR:paramiko.transport:    self._parse_kex_init(m)
ERROR:paramiko.transport:  File "/path/to/paramiko/transport.py", line
1725, in _parse_kex_init
ERROR:paramiko.transport:    raise SSHException('Incompatible ssh
server (no acceptable ciphers)')
ERROR:paramiko.transport:SSHException: Incompatible ssh server (no
acceptable ciphers)
ERROR:paramiko.transport:
DEBUG:paramiko.transport:starting thread (client mode): 0x748490L
INFO:paramiko.transport:Connected (version 2.0, client Sun_SSH_1.4)


Any help is greatly appreciated. I sent this to the paramiko list last
week, but I'm still in moderation purgatory.

-r