Q: paramiko/SSH/ how to get a remote host_key

Charles_hans charles_hans at yahoo.com
Wed Jan 30 19:54:47 CET 2008


I tried to get what host_key has been aquired after AutoPolicy is set. I
added the following code just before client.close() in rosty's final code:

try:
    host_keys =
paramiko.util.load_host_keys(os.path.expanduser('~/.ssh/known_hosts'))
except IOError:
    try:
        host_keys =
paramiko.util.load_host_keys(os.path.expanduser('~/ssh/known_hosts'))
    except IOError:
        print '*** Unable to open host keys file'

I still got 'Unable to open host keys file'. Can you tell me how to get the
remote host_key under this situation? Thanks!

Charles
1/30/2008

by Guilherme Polo Jan 21, 2008; 09:08am :

2008/1/21, DHR <dima.hristov at gmail.com>:

Very nice =)

Just an advice, you dont need to import base64. Method decode of
strings allows you to specify encoding as 'base64' to perform needed
operations.


by rosty Jan 21, 2008; 08:43am :

Thank you! Now it works and the code looks like this: 

import paramiko 
import base64 
from paramiko import AutoAddPolicy, SSHClient 

client = paramiko.SSHClient() 
client.set_missing_host_key_policy(AutoAddPolicy()) 
client.connect('hostIP', username='uname', password='pass') 
stdin, stdout, stderr = client.exec_command('ls') 
for line in stdout: 
    print '... ' + line.strip('\n') 

client.close() 
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