How do I configure logging for a Python application in Docker?

How do I configure logging for a Python application in Docker?

To configure logging for a Python application in Docker, you can use the built-in logging module in Python. You can set up a logging configuration in your Python script and ensure that the logs are output to stdout or a file that Docker can access.

Can you show me an example of a logging configuration in Python?

Sure! Here's a simple example:

import logging

logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
logger = logging.getLogger(__name__)

logger.info('This is an info message')

This will log messages to stdout.

How do I ensure that Docker captures these logs?

Docker captures logs from stdout and stderr by default. Just make sure your Python application logs to stdout, and you can view the logs using docker logs <container_id>.

What if I want to log to a file instead?

If you want to log to a file, you can specify a file handler in your logging configuration. Just ensure that the file path is accessible within the Docker container.