问题描述
我正在尝试从Azure Machine Learning Studio内部连接到Azure sql数据库。基于https://docs.microsoft.com/en-us/python/api/azureml-core/azureml.core.datastore.datastore?view=azure-ml-py,似乎推荐的模式是使用Datastore.register_azure_sql_database方法创建数据存储,如下所示:
import os
from azureml.core import Workspace,Datastore
ws = Workspace.from_config() # asks for interactive authentication the first time
sql_datastore_name = "datastore_test_01" # any name should be fine
server_name = os.getenv("sql_SERVERNAME","{sql_SERVERNAME}") # Name of the Azure sql server
database_name = os.getenv("sql_DATABASENAME","{sql_DATABASENAME}") # Name of the Azure sql database
username = os.getenv("sql_USER_NAME","{sql_USER_NAME}") # The username of the database user.
password = os.getenv("sql_USER_PASSWORD","{sql_USER_PASSWORD}") # The password of the database user.
sql_datastore = Datastore.register_azure_sql_database(workspace = ws,datastore_name = sql_datastore_name,server_name = server_name,database_name = database_name,username = username,password = password)
我很确定我已经正确设置了所有参数,已经从我的sql数据库资源上的ADO.NET连接字符串中复制了它们->设置->连接字符串:
Server=tcp:{sql_SERVERNAME}.database.windows.net,1433;Initial Catalog={sql_DATABASENAME};Persist Security Info=False;User ID={sql_USER_NAME};Password={sql_USER_PASSWORD};MultipleActiveResultSets=False;Encrypt=True;TrustServerCertificate=False;Connection Timeout=30;
但是,出现以下错误:
Registering datastore Failed with a 400 error code and error message 'Azure sql Database Error -2146232060: Please check the correctness of the datastore information.'
我错过了什么吗?例如防火墙规则?我还尝试将Azure ML计算资源的公用IP地址添加到sql数据库资源中允许的IP地址列表中,但仍然没有成功。
更新:将skip_validation = True
添加到Datastore.register_azure_sql_database
可解决此问题。然后,我可以使用
from azureml.core import Dataset
from azureml.data.datapath import DataPath
query = DataPath(sql_datastore,'SELECT * FROM my_table')
tabular = Dataset.Tabular.from_sql_query(query,query_timeout = 10)
df = tabular.to_pandas_dataframe()
解决方法
数据存储在vnet后面吗?您在哪里运行上面的注册码?在同一个vnet后面的计算实例上? 这是文档,描述了连接到vnet背后的数据所需执行的操作: https://docs.microsoft.com/en-us/azure/machine-learning/how-to-enable-virtual-network#use-datastores-and-datasets