Knowledge base for software setup, errors, and daily tool work.

How to Set Up a Wildcard Subdomain DNS Record in Cloudflare

If you need all subdomains (e.g., *.example.com) to point to the same IP or service, a wildcard D...

Debugging Jest Tests in VS Code: Breakpoints Not Hit

You set a breakpoint in a Jest test file, start debugging, and the test runs to completion but th...

Fix Nginx 'Permission Denied' Upstream Errors

When Nginx logs permission denied while connecting to an upstream (e.g., a Unix sock...

Fix ERR_NAME_NOT_RESOLVED After Chrome Update

If Chrome started showing ERR_NAME_NOT_RESOLVED on every website right after an upda...

Fix npm install Permission Denied After Node Update