import pymysql
from sshtunnel import SSHTunnelForwarder

with SSHTunnelForwarder(
  (sshServerB_ip, sshServerB_port), # B机器的配置
  ssh_password=sshServerB_pwd,
  ssh_username=sshServerB_usr,
  remote_bind_address=(databaseA_ip, databaseA_port)) as server: # A机器的配置

 db_connect = pymysql.connect(host='127.0.0.1', # 此处必须是是127.0.0.1
         port=server.local_bind_port,
         user=databaseA_usr,
         passwd=databaseA_pwd,
         db=databaseA_db)

 cur = db_connect.cursor()
 cur.execute('call storedProcedure')
 db_connect.commit()

from peewee import *
from playhouse.db_url import connect
from sshtunnel import SSHTunnelForwarder

server = SSHTunnelForwarder(
  (sshServerB_ip, sshServerB_port), # B机器的配置
  ssh_password=sshServerB_pwd,
  ssh_username=sshServerB_usr,
  remote_bind_address=(databaseA_ip, databaseA_port)) # A机器的配置
server.start()
destination_lib = connect('mysql://%s:%s@127.0.0.1:%d/%s' % (databaseA_usr, databaseA_pwd, server.local_bind_port, databaseA_db))
'''
your code to operate the databaseA
'''
server.close()