启用Python通过SSH隧道连接到MySQL

Question

我在Python 2.7中使用MySqldb来允许Python连接到另一个MySQL服务器

import MySQLdb
db = MySQLdb.connect(host="sql.domain.com",
     user="dev", 
      passwd="*******", 
      db="appdb")

与其像这样正常连接，如何使用SSH密钥对通过SSH隧道进行连接？

SSH隧道最好由Python打开。SSH隧道主机和MySQL服务器是同一台计算机。

Answer 1

我猜你需要港口转运。我建议sshtunnel.SSHTunnelForwarder

import mysql.connector
import sshtunnel

with sshtunnel.SSHTunnelForwarder(
        (_host, _ssh_port),
        ssh_username=_username,
        ssh_password=_password,
        remote_bind_address=(_remote_bind_address, _remote_mysql_port),
        local_bind_address=(_local_bind_address, _local_mysql_port)
) as tunnel:
    connection = mysql.connector.connect(
        user=_db_user,
        password=_db_password,
        host=_local_bind_address,
        database=_db_name,
        port=_local_mysql_port)
    ...

Answer 2

Paramiko是进行ssh隧道的最佳python模块。在这里查看代码： https://github.com/paramiko/paramiko/blob/master/demos/forward.py

正如评论中所说，这一个工作完美。 SSH Tunnel for Python MySQLdb connection

Answer 3

只有这对我有效

import pymysql
import paramiko
import pandas as pd
from paramiko import SSHClient
from sshtunnel import SSHTunnelForwarder
from os.path import expanduser

home = expanduser('~')
mypkey = paramiko.RSAKey.from_private_key_file(home + pkeyfilepath)
# if you want to use ssh password use - ssh_password='your ssh password', bellow

sql_hostname = 'sql_hostname'
sql_username = 'sql_username'
sql_password = 'sql_password'
sql_main_database = 'db_name'
sql_port = 3306
ssh_host = 'ssh_hostname'
ssh_user = 'ssh_username'
ssh_port = 22
sql_ip = '1.1.1.1.1'

with SSHTunnelForwarder(
        (ssh_host, ssh_port),
        ssh_username=ssh_user,
        ssh_pkey=mypkey,
        remote_bind_address=(sql_hostname, sql_port)) as tunnel:
    conn = pymysql.connect(host='127.0.0.1', user=sql_username,
            passwd=sql_password, db=sql_main_database,
            port=tunnel.local_bind_port)
    query = '''SELECT VERSION();'''
    data = pd.read_sql_query(query, conn)
    conn.close()