---
title: "Nginx Error Pattern Analyzer"
description: "Analyzes Nginx error logs using GoAccess and custom regex parsers to identify recurring 502/503 patterns. Correlates upstream timeout errors with backend service health via Prometheus PromQL queries."
verification: "security_reviewed"
source: "https://github.com/nginx/nginx"
author: "nginx"
category:
  - "Runbooks & Diagnostics"
framework:
  - "Custom Agents"
tool_ecosystem:
  github_repo: "nginx/nginx"
  github_stars: 29930
---

# Nginx Error Pattern Analyzer

Analyzes Nginx error logs using GoAccess and custom regex parsers to identify recurring 502/503 patterns. Correlates upstream timeout errors with backend service health via Prometheus PromQL queries.

## Installation

Choose whichever fits your setup:

1. Copy this skill folder into your local skills directory.
2. Clone the repo and symlink or copy the skill into your agent workspace.
3. Add the repo as a git submodule if you manage shared skills centrally.
4. Install it through your internal provisioning or packaging workflow.
5. Download the folder directly from GitHub and place it in your skills collection.

## Documentation

- https://nginx.org/en/docs/

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/nginx-error-pattern-analyzer-agent/)