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

Fix Nginx 'Permission Denied' Upstream Errors

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

How to Merge a Git Detached HEAD Back to Master

If you see a message like 'You are in 'detached HEAD' state' after checking out a...

How to Fix Chrome Sync Error 'Sign In Again'

What the Error Means

When Chrome displays 'Sign in again' in the sync settings, i...

Fixing Cloudflare 521 Error: Origin Unreachable

When you see Cloudflare error 521, it means your origin server is refusing the connection from Cl...

How to Generate a Cloudflare Origin Certificate

If you're using Cloudflare as a reverse proxy, you may want to encrypt traffic between your s...

Nginx Redirect Loop Not Working: Causes and Fixes

You've set up a redirect in Nginx, but instead of landing on the intended URL, the browser sh...