Devops
- Nginx Reverse Proxy Configuration
A reverse proxy receives a request and passes it to another service. When a page fails through nginx but works when you call the app directly, first check which part of that path differs.
- Reading Logs Before Searching Randomly
Logs are most useful when they answer a specific question: when did the failure start, which request was involved, and what changed just before it? Start narrow rather than reading thousands of lines from the top.
- Working With Configuration Files
Configuration files look like plain text, but tiny differences matter: indentation in YAML, quoting in JSON, and the environment a value is loaded into. A file that parses successfully can still tell an application to do …
- xargs Builder Guide
xargs takes a stream of items and passes them as arguments to another command. xargs Builder assembles the command line and explains its flags, but it does not execute anything.