MySQL Bugs: #98225: MySQL Connector/Python depends on dns.resolver module

Bug #98225	MySQL Connector/Python depends on dns.resolver module
Submitted:	14 Jan 2020 16:06	Modified:	31 Aug 2021 17:42
Reporter:	Dusan Obradovic	Email Updates:
Status:	Closed	Impact on me:	None
Category:	Connector / Python	Severity:	S1 (Critical)
Version:	8.0.19	OS:	CentOS
Assigned to:		CPU Architecture:	Any

Description:
Hi,

Python module mysql.connector depends on dns.resolver module. However, mysql-connector-python-8.0.19-1.el7.x86_64 rpm package does not depend on dns.resolver module.

How to repeat:
Python 2.7.5 (default, Aug  7 2019, 00:51:29) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import mysql.connector
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib64/python2.7/site-packages/mysql/connector/__init__.py", line 41, in <module>
    import dns.resolver
ImportError: No module named dns.resolver

MySQL Connector/Python CHANGELOG should mention dependecy on dns.resolver module.

MySQL RPM repository should require a package that provides dns.resolver module.

Hello Dusan Obradovic,

Thank you for the report and feedback.

regards,
Umesh

Hi Lasse,
The dnspython package is used for DNS SRV, but will be removed as a required dependency. For now, as a workaround, please install the dnspython package manually and the error will go away.

Posted by developer:
 
Fixed as of the upcoming MySQL Connector/Python 8.0.20 release, and here's the proposed changelog entry from the documentation team:

Removed the dnspython dependency, and now raise an exception if DNS SRV
functionality is used without it installed.

Thank you for the bug report.