How to connect to a database through a Paramiko Tu

问题:

I am having serious issues setting up a proper tunnel in paramiko to enable a database connection. I have reviewed the example 'forward.py', but am not understanding how to then link the database connection to it. Any pointers woudl be much appreciated.

I think I need something the following:

t = paramiko.Transport((hostname, port))
t.connect(username=username, password=password, hostkey=hostkey) 
c = paramiko.Channel(t)

#something about assigning a local port to this connection

connection = psycopg2.connect(connectionstring)
#and do my stuff

connection.close()
c.close()
t.close()

回答1:

if you have created your ssh tunnel using the forward.py script ; you can use the ssh tunnel to connect to postgresql like this:

conn = psycopg2.connect(database="test", host="localhost", port=<forward_port>)

回答2:

I had same serious issues getting paramiko to work too but ended up doing it with another library (sshtunnel) that wraps and simplifies paramiko's tunneling.

You can check my answer in another similar question with some sample code to use it.