CODEWITHSUNDEEP
pythonssh
puffadder
puffadder

Reputation: 113

SSH through Python with ~/.ssh/config file

I'm trying to create a script that uses SSH in Python to log in to a remote machine. My script is then supposed to call a certain rest API from that machine, and then returns the response to the original client.

I can't use subprocesses so that's sadly out of the question. I tried using Paramiko and Fabric but ended up having hugely complicated code segments with a lot of mandatory fields. I have setup my public key in all the steps between me and the machine and can easily go through all the intermediate machines by just typing.

"SSH xxx" - in the terminal

So what I'm looking for is something that allows me to do this simple request without me having to re-specify everything that's already setup. Has anyone done anything similar?

Upvotes: 0

Views: 2267

Answers (1)

Robᵩ
Robᵩ

Reputation: 168636

Yes, I have done something similar.

Here is a working sample program that uses SSH in Python to log in to a remote machine, then calls a certain rest API from that machine, then returns the response to the original client.

import paramiko
from xml.etree import ElementTree as ET
import sys

my_server = sys.argv[1]

client = paramiko.SSHClient()
client.load_system_host_keys()
client.connect(my_server)
stdin, stdout, stderr = client.exec_command(
    'curl http://www.thomas-bayer.com/sqlrest/CUSTOMER/3/')
xml = stdout.read()
xml = ET.fromstring(xml)
assert xml.find('.//FIRSTNAME').text == 'Michael'

If you could use subprocess, here is another such program:

import subprocess
import sys
from xml.etree import ElementTree as ET

my_server = sys.argv[1]

xml = subprocess.check_output([
    'ssh',
    my_server,
    'curl -s http://www.thomas-bayer.com/sqlrest/CUSTOMER/3/'])

xml = ET.fromstring(xml)
assert xml.find('FIRSTNAME').text == 'Michael'

Upvotes: 1

Related Questions