VPS-uppsättningen som faktiskt fungerar: Node.js, PM2, Nginx och nolltids-deploy | Akousa

javascript

// ecosystem.config.js
module.exports = {
  apps: [
    {
      name: "myapp",
      script: "node_modules/.bin/next",
      args: "start -p 3002",
      cwd: "/var/www/example.com",
      instances: 2,
      exec_mode: "cluster",
      max_memory_restart: "500M",
      env: {
        NODE_ENV: "production",
        PORT: 3002,
      },
      // Gracios avstangning
      kill_timeout: 5000,
      listen_timeout: 10000,
      wait_ready: false,
      // Loggning
      log_date_format: "YYYY-MM-DD HH:mm:ss Z",
      error_file: "/var/log/pm2/myapp-error.log",
      out_file: "/var/log/pm2/myapp-out.log",
      merge_logs: true,
      // Automatisk omstart vid fel
      autorestart: true,
      max_restarts: 10,
      min_uptime: "10s",
      // Overvaka inte i produktion
      watch: false,
    },
  ],
};

nginx

# /etc/nginx/sites-available/example.com
 
upstream node_app {
    server 127.0.0.1:3002;
    keepalive 64;
}
 
server {
    listen 80;
    listen [::]:80;
    server_name example.com www.example.com;
 
    # Omdirigera all HTTP till HTTPS
    return 301 https://$host$request_uri;
}
 
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name example.com www.example.com;
 
    # SSL (hanteras av Certbot — dessa rader laggs till automatiskt)
    ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
    include /etc/letsencrypt/options-ssl-nginx.conf;
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
 
    # Sakerhetsheaders
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
 
    # Gzip-komprimering
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_min_length 256;
    gzip_types
        text/plain
        text/css
        text/javascript
        application/javascript
        application/json
        application/xml
        image/svg+xml
        application/wasm;
 
    # Proxyinstallningar
    location / {
        proxy_pass http://node_app;
        proxy_http_version 1.1;
 
        # Headers
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
 
        # WebSocket-stod (om du nagonsin behover det)
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
 
        # Timeouts — generosa men inte oandliga
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
 
        # Buffring — lat Nginx hantera langa klienter
        proxy_buffering on;
        proxy_buffer_size 16k;
        proxy_buffers 4 32k;
        proxy_busy_buffers_size 64k;
    }
 
    # Next.js statiska tillgangar — lat Nginx servera dem direkt
    location /_next/static/ {
        alias /var/www/example.com/.next/static/;
        expires 365d;
        access_log off;
        add_header Cache-Control "public, immutable";
    }
 
    # Publika statiska filer
    location /static/ {
        alias /var/www/example.com/public/static/;
        expires 30d;
        access_log off;
    }
 
    # Blockera atkomst till punktfiler
    location ~ /\. {
        deny all;
        access_log off;
        log_not_found off;
    }
}

bash

#!/bin/bash
# deploy.sh — nolltids-deployment
 
set -euo pipefail
 
APP_DIR="/var/www/example.com"
APP_NAME="myapp"
LOG_FILE="/var/log/deploy.log"
HEALTH_URL="http://localhost:3002"
MAX_RETRIES=10
RETRY_INTERVAL=3
 
log() {
    echo "[$(date '+%Y-%m-%d %H:%M:%S')] $1" | tee -a "$LOG_FILE"
}
 
log "=== Deploy startad ==="
 
cd "$APP_DIR"
 
# Hamta senaste koden
log "Hamtar senaste andringarna..."
git pull origin main 2>&1 | tee -a "$LOG_FILE"
 
# Installera beroenden
log "Installerar beroenden..."
npm install --legacy-peer-deps 2>&1 | tee -a "$LOG_FILE"
 
# Bygg
log "Bygger applikationen..."
rm -rf .next
npm run build 2>&1 | tee -a "$LOG_FILE"
 
if [ $? -ne 0 ]; then
    log "FEL: Bygget misslyckades. Avbryter deploy."
    exit 1
fi
 
# Ladda om PM2 (nolltid i cluster mode)
log "Laddar om PM2..."
pm2 reload "$APP_NAME" 2>&1 | tee -a "$LOG_FILE"
pm2 save 2>&1 | tee -a "$LOG_FILE"
 
# Halsokontroll med omforsoek
log "Kor halsokontroll..."
for i in $(seq 1 $MAX_RETRIES); do
    HTTP_CODE=$(curl -s -o /dev/null -w '%{http_code}' "$HEALTH_URL" 2>/dev/null || echo "000")
    if [ "$HTTP_CODE" = "200" ]; then
        log "Halsokontrollen godkand (HTTP $HTTP_CODE)"
        log "=== Deploy slutford framgangsrikt ==="
        exit 0
    fi
    log "Halsokontrollforsok $i/$MAX_RETRIES (HTTP $HTTP_CODE). Forsoker igen om ${RETRY_INTERVAL}s..."
    sleep $RETRY_INTERVAL
done
 
log "FEL: Halsokontrollen misslyckades efter $MAX_RETRIES forsok"
log "Aterstaller till tidigare PM2-tillstand..."
pm2 restart "$APP_NAME" 2>&1 | tee -a "$LOG_FILE"
exit 1

VPS-uppsättningen som faktiskt fungerar: Node.js, PM2, Nginx och nolltids-deploy

Börja med säkerhet, inte kod

Skapa en icke-root-anvandare

Stall in SSH-nyckelautentisering

Brandvagg med UFW

Fail2Ban

Obestamannade sakerhetsuppdateringar

Node.js: Anvand NVM, inte apt

PM2: Processhanteraren som fortjanar sin plats

Installera och stall in

Ekosystemkonfigurationen

Startskript

Loggrotation

Nginx: Reverse proxyn som gor mer an du tror

Installera

Konfigurationen

SSL pa fem minuter

Verifiera automatisk fornyelse

Deployscriptet

Nar säker gar sönder klockan 2 pa natten

"Sajten ar nere"

"Minnet vaxer hela tiden"

"SSL-certifikatet har gatt ut"

"Diskutrymmet ar fullt"

Kommandot jag kor varje morgon

Vad de flesta guider inte berattar

Den fullstandiga checklistan

Ar det har "enterprise-grade"?

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