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image

OpenResty/Nginx monitoring with Prometheus

openresty-prometheus is a module to monitor the Nginx web server and reverse-proxy using Prometheus and Grafana. This tool allows you to collect and visualize various Nginx metrics to ensure your server is running optimally.

Features

  • nginx_http_requests_total: Number of HTTP requests with hostname, HTTP status, request method, and cache status.
  • nginx_http_request_duration_seconds: HTTP request latency with hostname.
  • nginx_http_connections: Number of HTTP connections with statuses like active, reading, waiting, and writing.

Prerequisites

  • Docker
  • Docker Compose
  • Nginx
  • Prometheus
  • Grafana

Getting Started

Follow these instructions to get a copy of the project up and running on your local machine for development and testing purposes.

Installation

  1. Clone the repository:
git clone https://github.com/srajasimman/openresty-prometheus.git
cd openresty-prometheus
  1. Build the Docker image:
docker build -t openresty-prometheus .
  1. Run the Docker container:
docker run -d -p 80:80 -p 9145:9145 openresty-prometheus

Configuration

  1. Update your Nginx configuration to include the Prometheus configuration. Replace the default configuration file with the prometheus.conf provided in this repository.
cp prometheus.conf /etc/nginx/conf.d/
  1. Ensure the Prometheus scrape configuration includes the Nginx metrics endpoint:
scrape_configs:
  - job_name: 'nginx'
    static_configs:
      - targets: ['<nginx-server-ip>:9145']

Usage

Once your Docker container is running, you can access the metrics at:

curl -s "http://<your-server-ip>:9145/metrics"

Visualization with Grafana

  1. Add Prometheus as a data source in Grafana.
  2. Import or create dashboards using the collected Nginx metrics:
    • nginx_http_requests_total
    • nginx_http_request_duration_seconds
    • nginx_http_connections

Metrics

nginx_http_requests_total

  • Description: Total number of HTTP requests.
  • Labels: hostname, status, method, cache_status

nginx_http_request_duration_seconds

  • Description: Duration of HTTP requests in seconds.
  • Labels: hostname

nginx_http_connections

  • Description: Current number of HTTP connections.
  • Labels: status (active, reading, waiting, writing)

Contributing

Contributions are what make the open-source community such an amazing place to learn, inspire, and create. Any contributions you make are greatly appreciated.

  1. Fork the Project.
  2. Create your Feature Branch (git checkout -b feature/AmazingFeature).
  3. Commit your Changes (git commit -m 'Add some AmazingFeature').
  4. Push to the Branch (git push origin feature/AmazingFeature).
  5. Open a Pull Request.

License

Distributed under the MIT License. See LICENSE for more information.

Acknowledgments

For more details, visit the openresty-prometheus repository.


Feel free to reach out if you have any questions or need further assistance!

Happy monitoring!