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Monitoring Guide

Overview​

This guide covers the monitoring and observability setup for the EyeNet system.

Metrics Collection​

System Metrics​

interface SystemMetrics {
  cpu: {
    usage: number;
    temperature: number;
  };
  memory: {
    total: number;
    used: number;
    free: number;
  };
  disk: {
    total: number;
    used: number;
    free: number;
  };
}

Network Metrics​

interface NetworkMetrics {
  bandwidth: {
    inbound: number;
    outbound: number;
  };
  latency: number;
  packetLoss: number;
  connections: number;
}

Monitoring Stack​

Prometheus Setup​

# prometheus.yml
global:
  scrape_interval: 15s
  evaluation_interval: 15s

scrape_configs:
  - job_name: 'eyenet'
    static_configs:
      - targets: ['localhost:3000']

Grafana Dashboards​

{
  "dashboard": {
    "id": null,
    "title": "EyeNet Overview",
    "panels": [
      {
        "title": "CPU Usage",
        "type": "graph",
        "datasource": "Prometheus",
        "targets": [
          {
            "expr": "system_cpu_usage"
          }
        ]
      }
    ]
  }
}

Logging​

Log Levels​

enum LogLevel {
  ERROR = 'error',
  WARN = 'warn',
  INFO = 'info',
  DEBUG = 'debug'
}

Log Format​

interface LogEntry {
  timestamp: string;
  level: LogLevel;
  message: string;
  context: {
    service: string;
    operation: string;
    [key: string]: any;
  };
}

ELK Stack Configuration​

# logstash.conf
input {
  beats {
    port => 5044
  }
}

filter {
  json {
    source => "message"
  }
}

output {
  elasticsearch {
    hosts => ["localhost:9200"]
    index => "eyenet-logs-%{+YYYY.MM.dd}"
  }
}

Alerting​

Alert Rules​

# alertmanager.yml
groups:
  - name: eyenet
    rules:
      - alert: HighCPUUsage
        expr: system_cpu_usage > 80
        for: 5m
        labels:
          severity: warning
        annotations:
          summary: High CPU usage detected

Alert Channels​

interface AlertChannel {
  type: 'email' | 'slack' | 'webhook';
  config: {
    recipients?: string[];
    webhook_url?: string;
    channel?: string;
  };
}

Health Checks​

Endpoint Configuration​

interface HealthCheck {
  name: string;
  endpoint: string;
  interval: number;
  timeout: number;
  healthyThreshold: number;
  unhealthyThreshold: number;
}

const healthChecks: HealthCheck[] = [
  {
    name: 'api',
    endpoint: '/health',
    interval: 30,
    timeout: 5,
    healthyThreshold: 2,
    unhealthyThreshold: 3
  }
];

Health Status​

interface HealthStatus {
  status: 'healthy' | 'unhealthy';
  checks: {
    [service: string]: {
      status: 'up' | 'down';
      latency: number;
      lastCheck: Date;
    };
  };
}

Tracing​

OpenTelemetry Configuration​

import { NodeTracerProvider } from '@opentelemetry/node';
import { SimpleSpanProcessor } from '@opentelemetry/tracing';
import { JaegerExporter } from '@opentelemetry/exporter-jaeger';

const provider = new NodeTracerProvider();
const exporter = new JaegerExporter({
  endpoint: 'http://localhost:14268/api/traces'
});

provider.addSpanProcessor(new SimpleSpanProcessor(exporter));
provider.register();

Performance Monitoring​

Metrics to Monitor​

  1. Application Metrics

    • Response times
    • Error rates
    • Request rates
    • Active users

  2. Infrastructure Metrics

    • CPU usage
    • Memory usage
    • Disk I/O
    • Network traffic

  3. Business Metrics

    • Active devices
    • Alert frequency
    • System uptime
    • User activity

Performance Thresholds​

const performanceThresholds = {
  api: {
    responseTime: 500, // ms
    errorRate: 0.01,   // 1%
    availability: 0.99 // 99%
  },
  database: {
    queryTime: 100,    // ms
    connections: 100,
    utilization: 0.8   // 80%
  },
  cache: {
    hitRate: 0.8,      // 80%
    evictionRate: 0.1  // 10%
  }
};

Visualization​

Grafana Dashboard Examples​

  1. System Overview

    • CPU, Memory, Disk usage
    • Network traffic
    • Error rates

  2. Network Devices

    • Device status
    • Connection quality
    • Bandwidth usage

  3. Application Performance

    • Response times
    • Error rates
    • Active sessions

Backup Monitoring​

Backup Status​

interface BackupStatus {
  lastBackup: Date;
  status: 'success' | 'failed';
  size: number;
  duration: number;
  location: string;
}

Backup Monitoring​

const backupMonitoring = {
  checks: [
    {
      type: 'database',
      schedule: '0 0 * * *',
      retention: 7
    },
    {
      type: 'configuration',
      schedule: '0 0 * * 0',
      retention: 30
    }
  ]
};

Security Monitoring​

Security Metrics​

interface SecurityMetrics {
  failedLogins: number;
  unauthorizedAccess: number;
  suspiciousActivities: number;
  vulnerabilities: {
    high: number;
    medium: number;
    low: number;
  };
}

Security Alerts​

const securityAlerts = {
  failedLogins: {
    threshold: 5,
    window: '5m',
    action: 'notify'
  },
  unauthorizedAccess: {
    threshold: 1,
    window: '1m',
    action: 'block'
  }
};