Workflow manuals for setup steps, repeatable tasks, and software operations.

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...

Fix DNS Probe Finished NXDOMAIN on Chrome for Android

If you see the error 'DNS_PROBE_FINISHED_NXDOMAIN' in Chrome on your Android phone, it me...

How to Fix Cloudflare Error 526: Invalid Origin Certificate

If you see Error 526: Invalid SSL Certificate in Cloudflare, it means Cloudflare...

Fix 'Permission Denied' in VS Code Terminal on Mac

You're working in VS Code on a Mac, and when you try to run a command in the integrated termi...

Fix Nginx Permission Denied for Static Files

Common Causes

When Nginx returns a 403 Forbidden or 'permission denied' error for...

Fix 'No Space Left on Device' with Docker Devicemapper

If you're running Docker with the devicemapper storage driver and see no s...