Monitoring

Overview

RNode Server includes built-in Prometheus metrics for monitoring performance and system health.

Key Components

• Metrics - Available metrics and PromQL queries
• Grafana Dashboard - Complete dashboard configuration

Quick Start

Enable Metrics

import { createApp } from 'rnode-server';

const app = createApp({ 
  logLevel: "info", 
  metrics: true  // Enable Prometheus metrics
});

Access Metrics

• Endpoint: GET /metrics (Prometheus format)

Available Metrics

HTTP Metrics

• http_requests_total - Total HTTP requests with labels
• http_requests_duration_seconds - Request duration histogram

System Metrics

• rnode_server_process_cpu_usage_percent - CPU usage
• rnode_server_process_memory_kb - Memory usage
• rnode_server_uptime_seconds - Server uptime

Performance Metrics

• rnode_server_slow_requests_total - Slow requests counter
• rnode_server_cache_hits_total - Cache performance
• rnode_server_total_connections - Connection count

Monitoring Stack

Prometheus

• Collect metrics from /metrics endpoint
• Store time-series data
• Provide query language (PromQL)

Grafana

• Visualize metrics with dashboards
• Create alerts and notifications
• Historical data analysis

Alerting

• High error rate detection
• Response time monitoring
• Resource usage alerts

Next Steps

• Metrics - Detailed metrics documentation
• Grafana Dashboard - Dashboard setup
• API Reference - Complete API documentation