[英]Azure Functions (Python) cannot connect to Azure MySQL instance with [SSL: WRONG_VERSION_NUMBER]
I'm creating a simple Azure Function using Python.我正在使用 Python 创建一个简单的 Azure Function。 It just simply read from an Azure MySQL instance and write something back to the same instance.它只是简单地从 Azure MySQL 实例中读取并将某些内容写回同一实例。 However, I cannot connect to the database successfully.但是,我无法成功连接到数据库。
import logging
from datetime import datetime
import azure.functions as func
import mysql.connector
from mysql.connector import errorcode
def connect_to_db():
logging.info(os.getcwd())
try:
db_conn = mysql.connector.connect(
user="...",
password='...',
host="....mysql.database.azure.com",
port=3306,
database='...'
)
return db_conn
except mysql.connector.Error as err:
if err.errno == errorcode.ER_ACCESS_DENIED_ERROR:
logging.error("Something is wrong with your user name or password")
elif err.errno == errorcode.ER_BAD_DB_ERROR:
logging.error("Database does not exist")
else:
logging.error(err)
return None
def main(req: func.HttpRequest) -> func.HttpResponse:
logging.info('Python HTTP trigger function processed a request.')
db_conn = connect_to_db()
if db_conn:
logging.info('DB Connection is established {}'.format(db_conn))
else:
return func.HttpResponse(
"Azure Functions cannot connect to MySQL database.",
status_code=500
)
....
The code works fine on my local machine when I use func host start
, I did use the same Azure MySQL instance as well.当我使用func host start
时,代码在我的本地机器上运行良好,我也使用了相同的 Azure MySQL 实例。
However, after I deployed the Azure Function, it doesn't not work and give me the error below:但是,在我部署 Azure Function 后,它不起作用并给我以下错误:
2055: Lost connection to MySQL server at '....mysql.database.azure.com:3306',
system error: 1 [SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:852)
I also tried disable the "SSL enforced" in Azure portal, and enabled Allow access to Azure services
, which are not helpful.我还尝试在 Azure 门户中禁用“SSL 强制”,并启用Allow access to Azure services
,这没有帮助。
Any help and comments will be appreciated!任何帮助和意见将不胜感激! Thanks!谢谢!
I solved the issue by myself eventually.我最终自己解决了这个问题。
Here are the steps:以下是步骤:
Download the SSL certificate from Azure document repo.从 Azure 文档存储库下载 SSL 证书。 You can get it here: https://docs.microsoft.com/en-us/azure/mysql/howto-configure-ssl你可以在这里得到它: https://docs.microsoft.com/en-us/azure/mysql/howto-configure-ssl
Put the certificate file along with the Azure Function project.将证书文件与 Azure Function 项目一起放置。 For me, I put it in the root folder of the project because I'll likely to have multiple functions in this project that will require this certificate对我来说,我把它放在项目的根文件夹中,因为我可能在这个项目中有多个需要这个证书的功能
Then, acquire the certification file in the python code as below然后,获取python代码中的认证文件如下
import pathlib def get_ssl_cert(): current_path = pathlib.Path(__file__).parent.parent return str(current_path / 'BaltimoreCyberTrustRoot.crt.pem')
So, I can use the SSL certificate when I connect to MySQL所以,当我连接到 MySQL 时,我可以使用 SSL 证书
# Connect to MySQL cnx = mysql.connector.connect( user="ctao@azure-mysql-test", password='*******', host="azure-mysql-test.mysql.database.azure.com", port=3306, database='ciscoepcstats', ssl_ca=get_ssl_cert() )
PS Disable the SSL verification is not an option for me because of the security concerns. PS 出于安全考虑,禁用 SSL 验证对我来说不是一个选项。 But luckily I found the solution.但幸运的是我找到了解决方案。
Please modify your code as below:请修改您的代码如下:
db_conn = mysql.connector.connect(
user="...",
password='...',
host="....mysql.database.azure.com",
port=3306,
database='...',
ssl_disabled=True
)
and change the status of "Enforce SSL connection" to "DISABLED" in your azure mysql on azure portal.并在 azure mysql 上 azure 中将“强制 SSL 连接”的状态更改为“禁用”。
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