首先需要一個模塊sshtunnel，如果沒有直接pip install sshtunnel

from sshtunnel import SSHTunnelForwarder
from sqlalchemy import Column, String, Integer, create_engine, event
from sqlalchemy.orm import sessionmaker
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.exc import DisconnectionError

ssh_host = ""  # 堡壘機ip地址或主機名
ssh_port = 22  # 堡壘機連接mysql服務器的端口號，一般都是22，必須是數字
ssh_user = ""  # 這是你在堡壘機上的用戶名
ssh_password = ""  # 這是你在堡壘機上的用戶密碼
mysql_host = ""  # 這是你mysql服務器的主機名或ip地址
mysql_port = 3306  # 這是你mysql服務器上的端口，3306，mysql就是3306，必須是數字
mysql_user = ""  # 這是你mysql數據庫上的用戶名
mysql_password = ""  # 這是你mysql數據庫的密碼
mysql_db = "" # mysql服務器上的數據庫名

Base = declarative_base()

class Phones(Base):
    __tablename__ = ‘phones‘
    id = Column(Integer, primary_key=True)
    name = Column(String(32))


def checkout_listener(dbapi_con, con_record, con_proxy):
    try:
        try:
            dbapi_con.ping(False)
        except TypeError:
            dbapi_con.ping()
    except dbapi_con.OperationalError as exc:
        if exc.args[0] in (2006, 2013, 2014, 2045, 2055):
            raise DisconnectionError()
        else:
            raise


with SSHTunnelForwarder(
        (ssh_host, ssh_port),
        ssh_username=ssh_user,
        ssh_password=ssh_password,
        remote_bind_address=(mysql_host, mysql_port)
) as server:
    server.start()  # ssh通道服務啟動
    local_port = str(server.local_bind_port)
    engine = create_engine(
        ‘mysql+pymysql://{}:{}@{}:{}/{}?charset=utf8‘.format(mysql_user, mysql_password, ‘127.0.0.1‘, local_port,mysql_db),
        pool_size=100,
        pool_recycle=3600)

    event.listen(engine, ‘checkout‘, checkout_listener)  # 防止報連接池相關的錯誤
    Base.metadata.create_all(engine)  # 檢測文件中所有繼承了Base類的類,在mysqld中建立所有的表,類就是表
    Session = sessionmaker(bind=engine)
    session = Session()

sqlalchemy通過ssh連接遠程mysql服務器