knktc's Notes

How to place and enable third-party SNMP MIB files on Ubuntu so tools like snmptranslate can resolve vendor-specific OIDs correctly.

How to make Git use a separate SSH key for a specific Git server by adding an entry to your SSH config.

Monkey-patch Celery Beat so it stays running but temporarily stops generating scheduled tasks when a standby flag is present.

Use a small Python script and a scheduled GitHub Actions workflow to submit your Hexo sitemap URLs to Baidu automatically.

If identical static files return different ETags on different Nginx nodes, check and normalize their modification timestamps.

Add Jira dashboard gadgets such as burndown charts to Confluence by registering them as external gadgets.

How to shorten the long shell prompt prefix generated by Poetry virtual environments by editing the activate script.

A simple Dockerfile for installing Headless Chrome on Ubuntu 20.04, with notes about mirrors, timezone prompts, and font support.

Promote a YApi user to admin by updating the role field directly in MongoDB.

This Django session error often points to session storage write failures, especially when using cached_db and writing the session on every request.