nginx.conf
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events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
# Logging format that includes X-Forwarded-For from ALB
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for" '
'proxy: "$proxy_host" "$upstream_addr"';
access_log /var/log/nginx/access.log main;
error_log /var/log/nginx/error.log warn;
# Basic 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_proxied any;
gzip_comp_level 6;
gzip_types
text/plain
text/css
text/xml
text/javascript
application/json
application/javascript
application/xml+rss
application/atom+xml
image/svg+xml;
server {
listen 80;
server_name localhost;
root /usr/share/nginx/html;
index index.html;
# Security headers - ALB handles some, but we add additional ones
add_header X-Frame-Options "SAMEORIGIN" always;
add_header X-XSS-Protection "1; mode=block" always;
add_header X-Content-Type-Options "nosniff" always;
add_header Referrer-Policy "no-referrer-when-downgrade" always;
add_header Content-Security-Policy "default-src 'self' http: https: data: blob: 'unsafe-inline'" always;
# Handle client-side routing - IMPORTANT for SPAs
location / {
try_files $uri $uri/ /index.html;
# Don't cache HTML to ensure fresh content
add_header Cache-Control "no-cache, no-store, must-revalidate";
}
# API proxy - updated for ALB architecture
location /api {
# Proxy to API Gateway service in Kubernetes
proxy_pass http://api-gateway-service:8080;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
# ALB passes client IP in X-Forwarded-For
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_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Port $server_port;
proxy_cache_bypass $http_upgrade;
# Timeout settings
proxy_connect_timeout 30s;
proxy_send_timeout 30s;
proxy_read_timeout 30s;
# Buffer settings
proxy_buffering on;
proxy_buffer_size 4k;
proxy_buffers 8 4k;
# Don't cache API responses by default
add_header Cache-Control "no-cache, no-store, must-revalidate";
}
# Health check endpoint for ALB
location /health {
access_log off;
add_header Content-Type text/plain;
return 200 "healthy\n";
}
# Cache static assets aggressively
location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
expires 1y;
add_header Cache-Control "public, immutable, max-age=31536000";
access_log off; # Reduce log noise for static assets
}
# Cache media files
location ~* \.(mp4|webm|ogg|mp3|wav)$ {
expires 6M;
add_header Cache-Control "public, immutable";
access_log off;
}
# Cache text files
location ~* \.(json|xml|txt)$ {
expires 1h;
add_header Cache-Control "public";
}
# Robots.txt
location /robots.txt {
add_header Content-Type text/plain;
return 200 "User-agent: *\nDisallow: /api/\nAllow: /\n";
access_log off;
}
# Favicon - prevent 404 errors
location = /favicon.ico {
log_not_found off;
access_log off;
}
# Prevent access to hidden files
location ~ /\. {
deny all;
access_log off;
log_not_found off;
}
# Error pages
error_page 404 /index.html;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
internal;
}
}
# Optional: Additional server block for redirecting to HTTPS
# Since ALB handles SSL termination, this might not be needed
# but can be useful for direct access scenarios
server {
listen 8080;
server_name _;
location /health {
access_log off;
add_header Content-Type text/plain;
return 200 "healthy\n";
}
# Deny all other traffic to this port
location / {
return 403;
}
}
}