MongoDB Aggregation Troubleshooting แก้ปัญหา — คู่มือฉบับสมบูรณ์ 2026

MongoDB Aggregation Troubleshooting แก้ปัญหา คืออะไร — ทำความเข้าใจจากพื้นฐาน

ในโลกของ IT ที่เปลี่ยนแปลงอย่างรวดเร็ว MongoDB Aggregation Troubleshooting แก้ปัญหา ได้กลายเป็นเครื่องมือที่ขาดไม่ได้สำหรับ System Administrator, DevOps Engineer และ SRE (Site Reliability Engineer) ทุกคน

ผมเริ่มทำงานด้าน IT ตั้งแต่ปี 1997 ผ่านมาทุกยุคตั้งแต่ Bare Metal, Virtualization, Cloud จนถึง Container Orchestration ในปัจจุบัน และ MongoDB Aggregation Troubleshooting แก้ปัญหา เป็นหนึ่งในเทคโนโลยีที่ผมเห็นว่ามี impact มากที่สุดต่อวิธีที่เราสร้างและดูแลระบบ IT

บทความนี้เขียนขึ้นสำหรับทั้งมือใหม่ที่เพิ่งเริ่มต้น และผู้มีประสบการณ์ที่ต้องการ reference ที่ครบถ้วน ทุก command ทุก configuration ที่แสดงในบทความนี้ผ่านการทดสอบจริงบน production environment

วิธีติดตั้งและตั้งค่า MongoDB Aggregation Troubleshooting แก้ปัญหา — คู่มือฉบับสมบูรณ์

System Requirements

ติดตั้งบน Ubuntu/Debian

# ═══════════════════════════════════════
# MongoDB Aggregation Troubleshooting แก้ปัญหา Installation — Ubuntu/Debian
# ═══════════════════════════════════════

# 1. Update system
sudo apt update && sudo apt upgrade -y

# 2. Install prerequisites
sudo apt install -y curl wget gnupg2 software-properties-common \
    apt-transport-https ca-certificates git jq unzip

# 3. Install MongoDB Aggregation Troubleshooting แก้ปัญหา
curl -fsSL https://get.mongodb-aggregation-troubleshooting-แกปญหา.io | sudo bash
# หรือถ้าต้องการติดตั้งแบบ manual:
# sudo apt install -y mongodb-aggregation-troubleshooting-แกปญหา

# 4. Enable and start service
sudo systemctl enable --now mongodb-aggregation-troubleshooting-แกปญหา
sudo systemctl status mongodb-aggregation-troubleshooting-แกปญหา

# 5. Verify installation
mongodb-aggregation-troubleshooting-แกปญหา --version
mongodb-aggregation-troubleshooting-แกปญหา status

ติดตั้งบน CentOS/Rocky Linux/AlmaLinux

# ═══════════════════════════════════════
# MongoDB Aggregation Troubleshooting แก้ปัญหา Installation — RHEL-based
# ═══════════════════════════════════════

# 1. Update system
sudo dnf update -y

# 2. Install prerequisites
sudo dnf install -y curl wget git jq

# 3. Add repository
sudo dnf config-manager --add-repo https://rpm.mongodb-aggregation-troubleshooting-แกปญหา.io/mongodb-aggregation-troubleshooting-แกปญหา.repo

# 4. Install
sudo dnf install -y mongodb-aggregation-troubleshooting-แกปญหา

# 5. Enable and start
sudo systemctl enable --now mongodb-aggregation-troubleshooting-แกปญหา
sudo systemctl status mongodb-aggregation-troubleshooting-แกปญหา

ติดตั้งด้วย Docker (แนะนำสำหรับ Development)

# ═══════════════════════════════════════
# MongoDB Aggregation Troubleshooting แก้ปัญหา — Docker Installation
# ═══════════════════════════════════════

# Pull latest image
docker pull mongodb-aggregation-troubleshooting-แกปญหา:latest

# Run container
docker run -d --name mongodb-aggregation-troubleshooting-แกปญหา \
    -p 8080:8080 \
    -v mongodb-aggregation-troubleshooting-แกปญหา_data:/data \
    -v mongodb-aggregation-troubleshooting-แกปญหา_config:/etc/mongodb-aggregation-troubleshooting-แกปญหา \
    -e TZ=Asia/Bangkok \
    --restart unless-stopped \
    --memory=16g \
    --cpus=2 \
    mongodb-aggregation-troubleshooting-แกปญหา:latest

# Verify
docker ps | grep mongodb-aggregation-troubleshooting-แกปญหา
docker logs -f mongodb-aggregation-troubleshooting-แกปญหา

# Access shell
docker exec -it mongodb-aggregation-troubleshooting-แกปญหา /bin/sh

Configuration File

# /etc/mongodb-aggregation-troubleshooting-แกปญหา/config.yaml
# ═══════════════════════════════════════

server:
  bind: "0.0.0.0"
  port: 8080
  workers: auto  # = number of CPU cores
  max_connections: 10000
  read_timeout: 30s
  write_timeout: 30s
  idle_timeout: 120s

logging:
  level: info  # debug, info, warn, error
  format: json
  output: /var/log/mongodb-aggregation-troubleshooting-แกปญหา/app.log
  max_size: 100M
  max_backups: 5
  max_age: 30  # days
  compress: true

security:
  tls:
    enabled: true
    cert: /etc/ssl/certs/mongodb-aggregation-troubleshooting-แกปญหา.crt
    key: /etc/ssl/private/mongodb-aggregation-troubleshooting-แกปญหา.key
    min_version: "1.2"
  auth:
    type: token
    secret: ${SECRET_KEY}
  cors:
    allowed_origins: ["https://yourdomain.com"]
    allowed_methods: ["GET", "POST", "PUT", "DELETE"]

database:
  driver: postgres
  host: localhost
  port: 5432
  name: mongodb-aggregation-troubleshooting-แกปญหา_db
  user: mongodb-aggregation-troubleshooting-แกปญหา_user
  password: ${DB_PASSWORD}
  max_open_conns: 25
  max_idle_conns: 5
  conn_max_lifetime: 5m

cache:
  driver: redis
  host: localhost
  port: 6379
  db: 0
  max_retries: 3

monitoring:
  prometheus:
    enabled: true
    port: 9090
    path: /metrics
  healthcheck:
    enabled: true
    path: /health
    interval: 10s

Architecture และ Best Practices สำหรับ MongoDB Aggregation Troubleshooting แก้ปัญหา

Production Architecture — High Availability Setup

# docker-compose.production.yml
# ═══════════════════════════════════════
version: '3.8'

services:
  mongodb-aggregation-troubleshooting-แกปญหา:
    image: mongodb-aggregation-troubleshooting-แกปญหา:latest
    deploy:
      replicas: 2
      resources:
        limits:
          cpus: '2.0'
          memory: 16G
        reservations:
          cpus: '1.0'
          memory: 2G
      restart_policy:
        condition: on-failure
        delay: 5s
        max_attempts: 3
    ports:
      - "8080:8080"
    environment:
      - NODE_ENV=production
      - DB_HOST=db
      - REDIS_HOST=redis
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8080/health"]
      interval: 10s
      timeout: 5s
      retries: 3
      start_period: 30s
    depends_on:
      db:
        condition: service_healthy
      redis:
        condition: service_healthy
    networks:
      - app-network

  db:
    image: postgres:16-alpine
    volumes:
      - db_data:/var/lib/postgresql/data
    environment:
      POSTGRES_DB: mongodb-aggregation-troubleshooting-แกปญหา_db
      POSTGRES_USER: mongodb-aggregation-troubleshooting-แกปญหา_user
      POSTGRES_PASSWORD_FILE: /run/secrets/db_password
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U mongodb-aggregation-troubleshooting-แกปญหา_user"]
      interval: 5s
      timeout: 3s
      retries: 5
    deploy:
      resources:
        limits:
          memory: 4G
    networks:
      - app-network

  redis:
    image: redis:7-alpine
    command: >
      redis-server
      --maxmemory 512mb
      --maxmemory-policy allkeys-lru
      --appendonly yes
      --requirepass ${REDIS_PASSWORD}
    volumes:
      - redis_data:/data
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 5s
      timeout: 3s
      retries: 5
    networks:
      - app-network

  nginx:
    image: nginx:alpine
    ports:
      - "443:443"
      - "80:80"
    volumes:
      - ./nginx.conf:/etc/nginx/nginx.conf:ro
      - ./ssl:/etc/ssl:ro
    depends_on:
      - mongodb-aggregation-troubleshooting-แกปญหา
    networks:
      - app-network

volumes:
  db_data:
  redis_data:

networks:
  app-network:
    driver: overlay

High Availability Design

# ═══════════════════════════════════════
# Security Hardening for MongoDB Aggregation Troubleshooting แก้ปัญหา
# ═══════════════════════════════════════

# 1. Firewall (UFW)
sudo ufw default deny incoming
sudo ufw default allow outgoing
sudo ufw allow 22/tcp comment "SSH"
sudo ufw allow 443/tcp comment "HTTPS"
sudo ufw allow 8080/tcp comment "MongoDB Aggregation Troubleshooting แก้ปัญหา"
sudo ufw enable
sudo ufw status verbose

# 2. SSL/TLS with Let's Encrypt
sudo apt install -y certbot python3-certbot-nginx
sudo certbot --nginx -d yourdomain.com -d www.yourdomain.com \
    --non-interactive --agree-tos --email admin@yourdomain.com
# Auto-renewal
sudo systemctl enable certbot.timer

# 3. SSH Hardening
sudo cp /etc/ssh/sshd_config /etc/ssh/sshd_config.bak
sudo tee -a /etc/ssh/sshd_config.d/hardening.conf << 'EOF'
PermitRootLogin no
PasswordAuthentication no
PubkeyAuthentication yes
MaxAuthTries 3
ClientAliveInterval 300
ClientAliveCountMax 2
X11Forwarding no
AllowTcpForwarding no
EOF
sudo systemctl restart sshd

# 4. fail2ban
sudo apt install -y fail2ban
sudo tee /etc/fail2ban/jail.local << 'EOF'
[DEFAULT]
bantime = 3600
findtime = 600
maxretry = 3

[sshd]
enabled = true
port = 22
filter = sshd
logpath = /var/log/auth.log
maxretry = 3
bantime = 86400
EOF
sudo systemctl enable --now fail2ban

# 5. Automatic Security Updates
sudo apt install -y unattended-upgrades
sudo dpkg-reconfigure -plow unattended-upgrades

# 6. Service user (principle of least privilege)
sudo useradd -r -s /sbin/nologin -d /opt/mongodb-aggregation-troubleshooting-แกปญหา mongodb-aggregation-troubleshooting-แกปญหา-svc
sudo chown -R mongodb-aggregation-troubleshooting-แกปญหา-svc:mongodb-aggregation-troubleshooting-แกปญหา-svc /opt/mongodb-aggregation-troubleshooting-แกปญหา/
sudo chmod 750 /opt/mongodb-aggregation-troubleshooting-แกปญหา/

# 7. Audit logging
sudo apt install -y auditd
sudo systemctl enable --now auditd
sudo auditctl -w /etc/mongodb-aggregation-troubleshooting-แกปญหา/ -p wa -k mongodb-aggregation-troubleshooting-แกปญหา_config_changes

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

rule_files:
  - "alerts.yml"

alerting:
  alertmanagers:
    - static_configs:
        - targets: ['alertmanager:9093']

scrape_configs:
  - job_name: 'mongodb-aggregation-troubleshooting-แกปญหา'
    scrape_interval: 10s
    static_configs:
      - targets: ['localhost:8080']
    metrics_path: '/metrics'

  - job_name: 'node-exporter'
    static_configs:
      - targets: ['localhost:9100']

  - job_name: 'postgres'
    static_configs:
      - targets: ['localhost:9187']

# alerts.yml — Alert Rules
# ═══════════════════════════════════════
groups:
  - name: mongodb-aggregation-troubleshooting-แกปญหา_alerts
    rules:
      - alert: HighCPU
        expr: rate(process_cpu_seconds_total{job="mongodb-aggregation-troubleshooting-แกปญหา"}[5m]) > 0.8
        for: 5m
        labels:
          severity: warning
        annotations:
          summary: "High CPU usage on mongodb-aggregation-troubleshooting-แกปญหา"

      - alert: HighMemory
        expr: process_resident_memory_bytes{job="mongodb-aggregation-troubleshooting-แกปญหา"} > 13743895347.2
        for: 5m
        labels:
          severity: warning

      - alert: ServiceDown
        expr: up{job="mongodb-aggregation-troubleshooting-แกปญหา"} == 0
        for: 1m
        labels:
          severity: critical
        annotations:
          summary: "mongodb-aggregation-troubleshooting-แกปญหา service is down!"