Using Paramiko to Establish SSH Connections and Switch to Root Privileges

Paramiko is a Python module that implements the SSH2 protocol, enabling encrypted and authenticated remote connections on platforms such as Linux, Solaris, BSD, macOS, and Windows.

The article demonstrates how to use Paramiko to establish an SSH connection and subsequently obtain root privileges on a server.

Step 1: Install the Paramiko module pip3 install paramiko

Step 2: Login with username and password – after installing the library, create a paramiko.SSHClient() , set missing host key policy, and call client.connect(hostname, port=22, username='your_user', password='your_password') to open the session.

Step 3: Login with an SSH key – generate or provide a private key file and use the pkey argument in client.connect() (e.g., client.connect(hostname, username='user', pkey=paramiko.RSAKey.from_private_key_file('id_rsa')) ).

Step 4: Switch to root privileges – because most servers disable direct root login, after a normal login execute sudo su - (or sudo -i ) via client.exec_command() to become the root user.

Conclusion: Paramiko is a powerful SSH library; beyond the basic connection and privilege escalation shown, it supports SFTP file transfers, concurrent operations with threading, configuration management via configparser , and process title customization with setproctitle . The examples provided are a starting point for more advanced automation.