Add configurable logging levels via LOG_LEVEL environment variable

[tikibozo]

Summary

Adds configurable logging levels to reduce log noise in container deployments.
Issue: #568

Changes

• Add LOG_LEVEL environment variable support
• Configure all loggers to respect the log level
• Change default from DEBUG to INFO level
• Update Docker configuration
• Update documentation

Testing

Python Syntax & Import Tests

• Both modified Python files (settings_manager.py, logger.py) compile without syntax errors
• New logging functions (get_log_level(), configure_root_logger()) are properly defined and callable
• Environment variable handling works correctly:
  • LOG_LEVEL=DEBUG → returns 10 (DEBUG level)
  • Default when not set → returns 20 (INFO level)

Docker Integration Tests

• Docker build completes successfully with new environment variable
• ENV LOG_LEVEL=INFO properly set as default in Dockerfile
• LOG_LEVEL=${LOG_LEVEL:-INFO} works correctly in docker-compose.yml
• Container environment variable handling:
  • Default: LOG_LEVEL=INFO in container
  • Override: -e LOG_LEVEL=WARNING properly overrides to WARNING

Environment Variable Validation

• Default behavior: LOG_LEVEL defaults to INFO when environment variable not set
• Override behavior: Environment variable properly overrides default value
• Container integration: Both default and runtime override scenarios work correctly

Breaking Changes

None - fully backward compatible.

[tikibozo]

What an unfortunate PR number 😅 It's safe I tested it!

Also I sound grumpy in the linked issue, I'm not! Thanks for all your efforts! Hope this helps/thanks for looking at it.

[Admin9705]

This is great work. i'll test it out and try to implement.

[tikibozo]

I've expanded this PR a bit to recategorize a bunch of internals from info to debug level also, along with removing the long-form timezone from the datestamp for file size and clarity. I also cleaned up a couple loggers that were using the default logging format instead of the custom Huntarr scheme.

[tikibozo]

@Admin9705 bump/reminder if you have a min

[Bruxes]

Still waiting to be implemented!

[Fastjur]

Also really want this feature to be merged, huntarr is the source of about 90% of my log ingestion, with about 45 services running...

Would really like to be able to disable debug logs!

[muddyfeather]

exactly the same here for me, it's all of the chatter in an otherwise clean log stream!

[tssgery]

Chiming in as well... would be good to see this get merged