python ssh连接mysql

from sshtunnel import SSHTunnelForwarder
import pymysql
class MySqlSSH:
    def __init__(self):
        self.server = SSHTunnelForwarder(
            ssh_address_or_host=('13.229.92.6', 22),    # ssh host
            ssh_username='lenox',      # ssh 账号
            ssh_password='......',   # ssh 密码
            remote_bind_address=('......', 3306)   # 数据库配置
        )
        # 启动隧道服务
        self.server.start()
        mysql_config = {
            'user': '......',
            'passwd': '......',
            'host': self.server.local_bind_host,
            'port': self.server.local_bind_port,
            'db': 'ph_data_bossjob'
        }
        # 连接数据库
        self.mysql = pymysql.connect(**mysql_config)
        self.cursor = self.mysql.cursor()
    def fetch_one(self, sql):
        # 执行SQL
        self.cursor.execute(sql)
        # 查看结果
        result = self.cursor.fetchone()
        return result
    def fetch_all(self, sql):
        # 执行SQL
        self.cursor.execute(sql)
        # 查看结果
        result = self.cursor.fetchall()
        return result
    def execute_sql(self, sql):
        # 执行SQL
        self.cursor.execute(sql)
        # 提交
        self.mysql.commit()
        # 返回影响行数
        result = "受影响的行数：{}".format(self.cursor.rowcount)
        return result
    def close(self):
        self.cursor.close()  # 关闭查询
        self.mysql.close()
        self.server.close()  # 关闭服务
if __name__ == '__main__':
    cc = None
    try:
        cc = MySqlSSH()
        qq = cc.fetch_all("select count(*) from users where date(created_at)='2024-01-18'")
        print(qq)
    except Exception as e:
        print(e)
        print("fail")
    finally:
        cc.close()