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I need to create tunneling to read information from a database. I use Paramiko, but I have not worked with tunneling yet. Please provide an example of a simple code that creates and closes a tunnel.
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A Paramiko SSH Example: Connect to Your Server Using a Password. This section shows you how to authenticate to a remote server with a username and password. To begin, create a new file named first_experiment.py and add the contents of the example file. Ensure that you update the file with your own Linode's details.
sshserver.py will run an SSH server on port 2222. Connect to this server with an SSH client using the username admin and password aaa, and try typing some commands: $ ssh admin@localhost -p 2222 admin@localhost's password: aaa >>> Welcome to my test SSH server.
At work we usually create ssh tunnels forwarding ports. The way we do that is, by using the standard command ssh -L port:addr:port addr with subprocess running in a separate thread.
I found this useful link: https://github.com/paramiko/paramiko/blob/master/demos/forward.py with an example of doing port forwarding with paramiko.
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I used sshtunnel for my projects. Example of the forwarding remote local MySQL port to the host local port:
pip install sshtunnel
python -m sshtunnel -U root -P password -L :3306 -R 127.0.0.1:3306 -p 2222 localhost
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