hawk-data 0.2.3

# Main nginx configuration file
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 1024;
    use epoll;
    multi_accept on;
}

http {
    # Basic settings
    include /etc/nginx/mime.types;
    default_type application/octet-stream;
    
    # Logging format
    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"';
    
    access_log /var/log/nginx/access.log main;
    
    # Performance settings
    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;
    
    # Gzip compression
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_types text/plain text/css application/json application/javascript text/xml;
    
    # Rate limiting
    limit_req_zone $binary_remote_addr zone=api:10m rate=100r/m;
    limit_req_zone $binary_remote_addr zone=login:10m rate=5r/m;
    
    # SSL settings
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers off;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256;
    
    # Upstream backend servers
    upstream app_backend {
        server 127.0.0.1:8080 max_fails=3 fail_timeout=30s;
        server 127.0.0.1:8081 max_fails=3 fail_timeout=30s backup;
    }
    
    upstream api_backend {
        least_conn;
        server 10.0.1.10:3000 weight=3;
        server 10.0.1.11:3000 weight=2;
        server 10.0.1.12:3000 weight=1;
    }
    
    # Main server block
    server {
        listen 80;
        listen [::]:80;
        server_name example.com www.example.com;
        
        # Redirect HTTP to HTTPS
        return 301 https://$server_name$request_uri;
    }
    
    # HTTPS server block
    server {
        listen 443 ssl http2;
        listen [::]:443 ssl http2;
        server_name example.com www.example.com;
        
        # SSL configuration
        ssl_certificate /etc/ssl/certs/example.com.crt;
        ssl_certificate_key /etc/ssl/private/example.com.key;
        ssl_session_timeout 1d;
        ssl_session_cache shared:MozTLS:10m;
        ssl_session_tickets off;
        
        # Security headers
        add_header Strict-Transport-Security "max-age=63072000" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header X-Frame-Options "DENY" always;
        add_header X-XSS-Protection "1; mode=block" always;
        
        # API endpoints
        location /api/ {
            limit_req zone=api burst=20 nodelay;
            proxy_pass http://api_backend;
            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;
            proxy_connect_timeout 30s;
            proxy_send_timeout 30s;
            proxy_read_timeout 30s;
        }
        
        # Authentication endpoints (stricter rate limiting)
        location /api/auth/ {
            limit_req zone=login burst=5 nodelay;
            proxy_pass http://api_backend;
            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;
        }
        
        # Static files
        location /static/ {
            alias /var/www/static/;
            expires 1M;
            add_header Cache-Control "public, immutable";
        }
        
        # Images with optimization
        location /images/ {
            alias /var/www/images/;
            expires 7d;
            add_header Cache-Control "public";
        }
        
        # Health check endpoint
        location /health {
            access_log off;
            return 200 "healthy\n";
            add_header Content-Type text/plain;
        }
        
        # Admin interface (restricted access)
        location /admin/ {
            allow 192.168.1.0/24;
            allow 10.0.0.0/8;
            deny all;
            
            proxy_pass http://app_backend;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        }
        
        # Default location
        location / {
            proxy_pass http://app_backend;
            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;
        }
        
        # Custom error pages
        error_page 404 /404.html;
        error_page 500 502 503 504 /50x.html;
        
        location = /404.html {
            internal;
            root /var/www/error;
        }
        
        location = /50x.html {
            internal;
            root /var/www/error;
        }
    }
}