Cannot connect to ssh via python

Question

so I just setted up a fresh new raspberry pi and I want it to communicate with python using ssh from my computer to my ssh server, the pi.. I first try to connect using putty and it work, I could execute all the commands I wanted, then I tried using librarys such as Paramiko, Spur and they didn't work.

Spur code:

import spur

shell = spur.SshShell("192.168.1.114", "pi", "raspberry")
result = shell.run("ls")
print result

Paramiko code:

ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())             
ssh.connect(host, username, password)

Here's the error code:

spur.ssh.ConnectionError: Error creating SSH connection
Original error: Server '192.168.1.114' not found in known_hosts

This is the error with spur but it pretty much said the same thing with paramiko.

Thanks in advance :)

Samuel · Accepted Answer · 2016-07-20 15:23:03Z

3

You need to accept the host key, similarly to what is shown here

import spur
shell = spur.SshShell("192.168.1.114", 
                      "pi", 
                      "raspberry", 
                      missing_host_key=spur.ssh.MissingHostKey.accept)
result = shell.run("ls")
print result

EDIT: More useful link (spur documentation)

edited Jul 20, 2016 at 15:23

answered Jul 20, 2016 at 14:35

Samuel

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5 Comments

Samuel Over a year ago

See updated answer, does your code look similar? And if yes, is it the same error as before?

BruhHacker_269 Over a year ago

Ok yeah it works, now I just get a NoSuchCommand error Command not found l.. :)

Samuel Over a year ago

Perfect. Don't forget to accept if my answer helped.

Rafa Viotti Over a year ago

For the casual reader, spur.ssh.MissingHostKey.accept is not good practice. There is a reason why Spur (and the SSH tool/protocol) rejects unknown keys by default, and that is to prevent MITM attacks. The "correct" procedure is to check the public key fingerprint against the physical server, or some cloud equivalent, and then add it to your known_hosts file before attempting to connect to it.

Samuel Over a year ago

Realistically, a better practice here would (after seeing a denied key), should be to prompt (as you would at a normal SSH connection). The "correct" procedure is to phone the admin of the server and have him read the code to you so it can't get hijacked, but that isn't likely to happen.

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