MariaDB Python 中的连接器无法连接到远程服务器

Question

I was using the connection to the remote Mariadb server for months. Today the connection couldn't be established anymore via the python mariadb module and the mariadb connector on macOS. The basic installation is as follows:

brew install mariadb-connector-c
pip install mariadb

To connect to the server via python:

>>> import mariadb
>>> mariadb.connect(host="<IP>", port=3306)

The return is:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/<name>/miniconda3/lib/python3.8/site-packages/mariadb/__init__.py", line 142, in connect
    connection = connectionclass(*args, **kwargs)
  File "/Users/<name>/miniconda3/lib/python3.8/site-packages/mariadb/connections.py", line 83, in __init__
    super().__init__(*args, **kwargs)
mariadb.OperationalError: Can't connect to server on '<IP>' (60)

I can connect to the MariaDB server via the terminal mysql client (mysql -h ) as well as establish a connection using the telnet module:

>>> import telnetlib 
>>> telnetlib.Telnet(host="<IP>", port=3306)

I also can connect to a locally installed mariadb server via python and the mariadb module. Remote throws the above error though.

Anyone an idea why the connection can't be established?

Answer 1

It's a bug which was introduced by a fix for CONC-607 (PR-204, commit dfe3563192e43a48bef3a861e72d9d122b9b346c). To track this issue please check CONC-612 on MariaDB Issue tracker.

Update (2022-09-02 10:07 CEST) : Issue is fixed (Connector/C 3.1.19 and 3.3.4)