20. Server Health Monitoring & Alerting: Uptime Kuma, Netdata, Prometheus & Telegram Bot Webhooks • DevOps, Docker & Cloud VPS Deployment Mastery • Rishabh Ki Kaksha

DevOps, Docker & Cloud VPS Deployment Mastery › 20. Server Health Monitoring & Alerting: Uptime Kuma, Netdata, Prometheus & Telegram Bot Webhooks

50 mins

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Course Syllabus

Module 1: Linux System Administration & Kernel Performance Tuning

01. Linux OS Architecture: Kernel vs User Space, System Calls & Process Management (ps, top, htop) 02. Linux File Permissions (chmod, chown, SUID/SGID) & Sticky Bits Security 03. Networking & Diagnostics: netstat, ss, lsof, tcpdump, curl, dig & DNS Resolution

Part 1: Linux & Docker Containerization

Module 2: Containerization with Docker & Multi-Stage Builds

04. Docker Architecture: Namespaces, Cgroups, UnionFS & Docker Engine Internals 05. Dockerfile Optimization: Layer Caching, Non-Root Users & Ultra-Light Alpine Multi-Stage Builds 06. Docker Compose: Multi-Container Networking, Persistent Volumes & Environment Config 07. Docker Production Security: Read-Only Root FS, Capabilities Drop & Container Scanning

Part 2: Nginx, SSL, PM2 & Automated CI/CD

Module 3: Nginx Reverse Proxy, SSL Automation & Security Hardening

08. Nginx Masterclass: Event-Driven Non-Blocking Architecture vs Apache Multi-Threaded 09. Nginx as Reverse Proxy, Load Balancer (upstream) & Gzip/Brotli Compression Config 10. SSL/TLS Automation with Certbot Let's Encrypt, HTTP/2 & Strict-Transport-Security (HSTS) 11. Nginx Rate Limiting (limit_req), DDoS Mitigation & Security Headers Injection

Module 4: Process Management with PM2 & Systemd Services

12. Systemd Services: Creating Custom System Daemons with Automatic Restart & Logging 13. PM2 Enterprise Process Manager: Cluster Mode, Ecosystem Config & Graceful Reloads 14. Log Management & Rotation: logrotate, journalctl & Centralized Syslog Streaming

Module 5: CI/CD Automation with GitHub Actions & Zero-Downtime Deployments

15. CI/CD Foundations: Building Automated Test & Build Pipelines with GitHub Actions 16. Automated SSH Deployments: Self-Hosted Runners, Deploy Keys & Zero-Downtime Atomic Symlinks 17. Blue-Green & Canary Deployment Strategies on Cloud VPS Infrastructure

Module 6: Cloud VPS Production Hardening, Firewall (UFW) & Backups

18. Cloud VPS Hardening: Non-Root Sudo Users, SSH Key-Only Auth, Fail2ban & UFW Firewall Rules 19. Automated Database & Media Backups to Cloud Storage (AWS S3 / Cloudflare R2 / MinIO) 20. Server Health Monitoring & Alerting: Uptime Kuma, Netdata, Prometheus & Telegram Bot Webhooks

Interactive Lesson Studio

# 20. Server Health Monitoring & Alerting: Uptime Kuma, Netdata, Prometheus & Telegram Bot Webhooks

> DevOps & Cloud VPS Notes by Rishabh - Topic 20

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### 1. The 4 Golden Signals of Monitoring (Google SRE Standard 📊)

1. **Latency:** Request process hone ka time.
2. **Traffic:** Demand / QPS on system.
3. **Errors:** Rate of HTTP 5xx failures.
4. **Saturation:** CPU, RAM, Disk I/O & Network bandwidth utilization percentage.

---

### 2. Real-Time Alerting Pipeline (Telegram Bot Webhook 🚨)

```typescript
export async function sendTelegramAlert(message: string) {
    const BOT_TOKEN = process.env.TELEGRAM_BOT_TOKEN;
    const CHAT_ID = process.env.TELEGRAM_CHAT_ID;

await fetch(`https://api.telegram.org/bot${BOT_TOKEN}/sendMessage`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({
            chat_id: CHAT_ID,
            text: `🚨 <b>CRITICAL SERVER ALERT</b>\n\n${message}`,
            parse_mode: "HTML"
        })
    });
}
```

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### 3. Master Comparison Matrix

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### 4. Interview Ke 3 Sawal Is Topic Se

1. **Alert Fatigue kya hoti hai aur ise kaise prevent karte hain?** -> Non-critical warnings par continuous notifications aane se engineers alerts ignore karne lagte hain; ise prevent karne ke liye sirf Actionable incidents par Page/SMS trigger karna.
2. **Prometheus Pull Model vs InfluxDB Push Model me kya difference hai?** -> Prometheus server targets ko scrape (pull) karta hai; Push model me agents metrics server par push karte hain.
3. **RTO vs RPO me kya farak hai?** -> **RTO (Recovery Time Objective):** Crash hone ke baad system wapas live aane ka maximum acceptable time; **RPO (Recovery Point Objective):** Maximum acceptable data loss duration (e.g. last 1 hour backup).

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**Course Completed:** DevOps, Docker & Cloud VPS Deployment Mastery (All 20 Lessons Completed!) 🎉🚀🐧🐳☸️🛡️💎

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Rishabh Gehlot

PHP 8+ & Laravel 11 Master Track