Infrastructure Monitor

Published by armanzeroeight in fastagent-plugins

Review recommended9 installs

What this skill does

Set up monitoring, logging, and alerting for infrastructure and applications. Use when implementing observability, creating dashboards, or configuring alerts.

Add Infrastructure Monitor to your agent

Review the source and files first. When you are ready, copy the prompt instruction or use the CLI command supported by your environment.

Install with a prompt

Paste this into a compatible coding agent:

add this skill "infrastructure-monitor" from https://github.com/armanzeroeight/fastagent-plugins

Install with the CLI

Run this command in a controlled environment after reviewing the repository:

npx skills add https://github.com/armanzeroeight/fastagent-plugins --skill infrastructure-monitor

Skill instructions

Infrastructure Monitor

Set up comprehensive monitoring and observability.

Quick Start

Use Prometheus for metrics, Grafana for dashboards, Loki for logs, set up alerts for critical issues.

Instructions

Metrics with Prometheus

Application instrumentation:

const prometheus = require('prom-client');

const httpRequestDuration = new prometheus.Histogram({
  name: 'http_request_duration_seconds',
  help: 'Duration of HTTP requests in seconds',
  labelNames: ['method', 'route', 'status_code']
});

app.use((req, res, next) => {
  const start = Date.now();
  res.on('finish', () => {
    const duration = (Date.now() - start) / 1000;
    httpRequestDuration.labels(req.method, req.route?.path, res.statusCode).observe(duration);
  });
  next();
});

Prometheus config:

scrape_configs:
  - job_name: 'app'
    static_configs:
      - targets: ['app:3000']
    scrape_interval: 15s

Dashboards with Grafana

Key metrics to monitor:

Request rate (requests/second)
Error rate (errors/total requests)
Response time (p50, p95, p99)
CPU and memory usage
Database query time

Logging with Loki

Structured logging:

const winston = require('winston');

const logger = winston.createLogger({
  format: winston.format.json(),
  transports: [
    new winston.transports.Console()
  ]
});

logger.info('User logged in', { userId: user.id, ip: req.ip });

Alerting

Alert rules:

groups:
  - name: app_alerts
    rules:
      - alert: HighErrorRate
        expr: rate(http_requests_total{status=~"5.."}[5m]) > 0.05
        for: 5m
        annotations:
          summary: "High error rate detected"

Best Practices

Monitor golden signals (latency, traffic, errors, saturation)
Set up actionable alerts
Use log aggregation
Implement distributed tracing
Create runbooks for alerts
Regular dashboard reviews

Files included

SKILL.md

More skills

Infrastructure Monitor: Install, Source and Security | FunnelSlayer