Nginx Error Pattern Analyzer
Diagnose Nginx web server errors and upstream performance.
Install
mkdir -p .claude/skills/nginx-error-pattern-analyzer && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/11527" && unzip -o skill.zip -d .claude/skills/nginx-error-pattern-analyzer && rm skill.zipInstalls to .claude/skills/nginx-error-pattern-analyzer
Activation
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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.Key capabilities
- →Analyze Nginx error logs
- →Identify recurring 502/503 patterns
- →Correlate upstream timeout errors with backend service health
- →Use GoAccess for log parsing
- →Perform Prometheus PromQL queries
How it works
The skill uses GoAccess and custom regex parsers to analyze Nginx error logs for 502/503 patterns. It then correlates these patterns with backend service health using Prometheus PromQL queries.
Inputs & outputs
When to use Nginx Error Pattern Analyzer
- →Troubleshoot nginx 502 errors
- →Analyze upstream timeout patterns
- →Check backend service health
About this skill
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
Use the upstream install or setup path that matches your environment:
- git clone https://github.com/nginx/nginx.git
- make
Requirements and caveats from upstream:
- Processes synchronize data through shared memory. For this reason, many NGINX directives require the allocation of shared memory zones. As an example, when configuring [rate limiting](https://nginx.org/en/docs/http/ng...
- Most Linux distributions will require several dependencies to be installed in order to build NGINX. The following instructions are specific to the apt package manager, widely available on most Ubuntu/Debian distributi...
- Prior to building NGINX, you must run the configure script with appropriate flags. This will generate a Makefile in your NGINX source root directory that can then be used to...
Basic usage or getting-started notes:
-
While nearly all popular Linux-based operating systems are distributed with a community version of nginx, we highly advise installation and usage of official packages or sou...
-
For a gentle introduction to NGINX basics, please see our Beginner’s Guide.
-
Source: https://github.com/nginx/nginx
-
Extracted from upstream docs: https://raw.githubusercontent.com/nginx/nginx/HEAD/README.md
Documentation
Source
When not to use it
- →When the task is to build Nginx from source without prior configuration
- →When the task involves general Nginx configuration not related to error analysis
- →When the task is to install Nginx packages
Limitations
- →The skill focuses on Nginx error logs and Prometheus metrics.
- →The skill is limited to identifying 502/503 patterns and upstream timeout errors.
- →The skill requires specific dependencies for building Nginx.
How it compares
This skill automates the correlation of Nginx error patterns with backend metrics, providing a direct diagnostic link that manual log inspection and separate metric checks would not.
Compared to similar skills
Nginx Error Pattern Analyzer side by side with the closest alternatives in the catalog.
| Skill | Installs | Updated | Safety | Difficulty |
|---|---|---|---|---|
| Nginx Error Pattern Analyzer (this skill) | 0 | 2mo | No flags | Intermediate |
| log-analyzer | 2 | 2mo | Review | Beginner |
| langfuse-local-dev-loop | 1 | 24d | Review | Intermediate |
| incident-response-smart-fix | 4 | 3mo | No flags | Advanced |
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