[Fab-user] Loading system known_hosts file

[Ashby, Jason (IMS)]

Hi,

Is it possible for Fabric to use the “system” known hosts and key file found in /etc/ssh/ssh_known_hosts?  We keep all of our host keys in /etc/ssh/ssh_known_hosts and not in individual user’s home dirs. (~/.ssh).

 

I’ve tried the following env settings:

 

env.use_ssh_config = True

env.ssh_config_path = '/etc/ssh/ssh_config'

env.key_filename = '/etc/ssh/ssh_host_rsa_key'

 

However, I’m still prompted for a password.  I can hostbased SSH from mainhost to foohost without a password as root when testing from the Linux command line.  Here is some debug output:

 

address@hidden:~ > fab test

[foohost] Executing task 'test'

[foohost] run: uname -s

DEBUG:ssh.transport:starting thread (client mode): 0x26f2890L

INFO:ssh.transport:Connected (version 1.99, client OpenSSH_5.1)

DEBUG:ssh.transport:kex algos:['diffie-hellman-group-exchange-sha256', 'diffie-hellman-group-exchange-sha1', 'diffie                   -hellman-group14-sha1', 'diffie-hellman-group1-sha1'] server key:['ssh-rsa', 'ssh-dss'] client encrypt:['aes128-cbc'                   , '3des-cbc', 'blowfish-cbc', 'cast128-cbc', 'arcfour128', 'arcfour256', 'arcfour', 'aes192-cbc', 'aes256-cbc', 'rij                   address@hidden', 'aes128-ctr', 'aes192-ctr', 'aes256-ctr'] server encrypt:['aes128-cbc', '3des-cbc', 'blow                   fish-cbc', 'cast128-cbc', 'arcfour128', 'arcfour256', 'arcfour', 'aes192-cbc', 'aes256-cbc', 'address@hidden                   iu.se', 'aes128-ctr', 'aes192-ctr', 'aes256-ctr'] client mac:['hmac-md5', 'hmac-sha1', 'address@hidden', 'hmac-                   ripemd160', 'address@hidden', 'hmac-sha1-96', 'hmac-md5-96'] server mac:['hmac-md5', 'hmac-sha1', 'umac-                   address@hidden', 'hmac-ripemd160', 'address@hidden', 'hmac-sha1-96', 'hmac-md5-96'] client compress:['no                   ne', 'address@hidden', 'zlib'] server compress:['none', 'address@hidden', 'zlib'] client lang:[''] server lang:[                   ''] kex follows?False

DEBUG:ssh.transport:Ciphers agreed: local=aes128-ctr, remote=aes128-ctr

DEBUG:ssh.transport:using kex diffie-hellman-group1-sha1; server key type ssh-rsa; cipher: local aes128-ctr, remote                    aes128-ctr; mac: local hmac-sha1, remote hmac-sha1; compression: local none, remote none

DEBUG:ssh.transport:Switch to new keys ...

DEBUG:ssh.transport:Trying key 2d84d6f8af827bd2008aa7e8009fb3765 from /etc/ssh/ssh_host_rsa_key

DEBUG:ssh.transport:userauth is OK

INFO:ssh.transport:Authentication (publickey) failed.

[foohost] Login password for 'root':

 

 

FYI, the test function is just:

 

def test():

                  run('uname -s')

 

 

VERSION INFO:

root@ mainhost:~> fab --version

Fabric 1.4.2

ssh (library) 1.7.14

 

Thanks for your help!

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