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Updated on 2025-03-06

Python implementation of operating remote servers based on paramiko library

Python implementation of operating remote servers based on paramiko library

Updated: January 18, 2025 09:34:02 Author: Lazy King Loves to Eat Wolf
This article mainly introduces the use of Python's Paramiko library to operate remote servers. The example code is introduced in this article in detail, which has certain reference learning value for everyone's learning or work. Friends who need it, please learn with the editor below.

Paramiko is a module used to implement the SSHv2 protocol in Python. It can be used to connect to a remote server and perform various operations, such as executing commands, uploading and downloading files, etc. The following is an example of operating a remote server based on the Paramiko library.

First, make sure you have the Paramiko library installed. If you have not installed it, you can use the following command to install it:

pip install paramiko

Here is a sample script that shows how to use Paramiko to connect to a remote server and perform some basic operations:

import paramiko

def ssh_connect(hostname, port, username, password):
    # Create an SSH client object    ssh_client = ()
    
    # Automatically add the host name and key of the remote server to the local known_hosts file    ssh_client.set_missing_host_key_policy(())
    
    try:
        # Connect to the remote server        ssh_client.connect(hostname=hostname, port=port, username=username, password=password)
        print(f"Successfully connected to {hostname}")
        return ssh_client
    except Exception as e:
        print(f"Failed to connect to {hostname}: {e}")
        return None

def execute_command(ssh_client, command):
    try:
        # Execute the command        stdin, stdout, stderr = ssh_client.exec_command(command)
        
        # Read command standard output and standard errors        output = ().decode()
        error = ().decode()
        
        return output, error
    except Exception as e:
        print(f"Failed to execute command: {e}")
        return None, str(e)

def sftp_upload_file(ssh_client, local_file_path, remote_file_path):
    try:
        # Upload files using SFTP        sftp_client = ssh_client.open_sftp()
        sftp_client.put(local_file_path, remote_file_path)
        sftp_client.close()
        print(f"Successfully uploaded {local_file_path} to {remote_file_path}")
    except Exception as e:
        print(f"Failed to upload file: {e}")

def sftp_download_file(ssh_client, remote_file_path, local_file_path):
    try:
        # Download files using SFTP        sftp_client = ssh_client.open_sftp()
        sftp_client.get(remote_file_path, local_file_path)
        sftp_client.close()
        print(f"Successfully downloaded {remote_file_path} to {local_file_path}")
    except Exception as e:
        print(f"Failed to download file: {e}")

def main():
    hostname = 'your_remote_server_ip'
    port = 22
    username = 'your_username'
    password = 'your_password'
    
    # Connect to the remote server    ssh_client = ssh_connect(hostname, port, username, password)
    
    if ssh_client:
        # Execute the command        command = 'ls -l'
        output, error = execute_command(ssh_client, command)
        print(f"Command Output:\n{output}")
        if error:
            print(f"Command Error:\n{error}")
        
        # Upload file        local_file_path = '/path/to/local/'
        remote_file_path = '/path/to/remote/'
        sftp_upload_file(ssh_client, local_file_path, remote_file_path)
        
        # Download the file        remote_file_to_download = '/path/to/remote/another_file.txt'
        local_file_to_save = '/path/to/local/another_file.txt'
        sftp_download_file(ssh_client, remote_file_to_download, local_file_to_save)
        
        # Close SSH connection        ssh_client.close()

if __name__ == "__main__":
    main()

illustrate:

  • ssh_connectFunction: Used to connect to a remote server.
  • execute_commandFunction: Used to execute commands on a remote server and return the output and error information of the command.
  • sftp_upload_fileFunction: Used to upload files to a remote server via SFTP.
  • sftp_download_fileFunction: Used to download files from remote servers via SFTP.
  • mainFunction: Used to connect to the server, execute commands, upload and download files, and finally close the SSH connection.

Notes:

  • Please make sure to replace thehostname、username、password、local_file_pathandremote_file_pathFor actual server information.
  • In production environments, hard-code passwords in code are not recommended. Consider using SSH key authentication or other more secure ways to manage authentication information.

This is the end of this article about the implementation of Python's remote server operation based on the paramiko library. For more related content on Python's remote server operation, please search for my previous articles or continue browsing the related articles below. I hope everyone will support me in the future!

  • Python
  • paramiko
  • Remote server

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