instanode-web/nginx.conf at main · InstaNode-dev/instanode-web · GitHub

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# nginx config for the unified instanode.dev site.
#
# - Serves all React routes through index.html (SPA fallback).
# - Forces correct Content-Type for llms.txt / llms-full.txt (text/plain).
# - Caches static assets aggressively but never the entry HTML.
# - Proxies /api/, /auth/, /claim, /db/new, /cache/new, /nosql/new, /queue/new,
#   /storage/new, /webhook/new, and /.well-known/ to api.instanode.dev so
#   the dashboard's same-origin fetches work in production.

server {
    listen      80;
    listen      [::]:80;
    server_name _;

    root  /usr/share/nginx/html;
    index index.html;

    # Don't expose server version.
    server_tokens off;

    # ── Security headers (B6-P2-12, 2026-05-20) ─────────────────────────
    # Defence-in-depth: CSP + X-Frame-Options + Referrer-Policy on every
    # response. Inline + unsafe-eval allowed because:
    #   - Vite's prerender emits inline <script> blocks for SSR hydration
    #   - the New Relic browser agent boots inline at the top of <head>
    #   - JSON-LD blog metadata is inline <script type="application/ld+json">
    # Connect-src allows the agent API + NR ingest so dashboard fetches
    # and RUM beacons aren't broken. add_header inherits down — it must
    # be set at server-level OR repeated in every block, otherwise nested
    # location blocks lose it. We set it here once for that reason.
    add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://js-agent.newrelic.com https://bam.nr-data.net https://checkout.razorpay.com; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self' data:; connect-src 'self' https://api.instanode.dev https://*.nr-data.net https://*.newrelic.com https://api.razorpay.com wss://api.instanode.dev; frame-src https://checkout.razorpay.com; object-src 'none'; base-uri 'self'; form-action 'self' https://api.instanode.dev;" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header Permissions-Policy "geolocation=(), microphone=(), camera=()" always;

    # Compression.
    gzip on;
    gzip_types text/plain text/css application/javascript application/json image/svg+xml;
    gzip_min_length 1024;

    # ── llms.txt / llms-full.txt — must be served as text/plain ──────────
    location = /llms.txt {
        default_type text/plain;
        add_header Cache-Control "public, max-age=300, must-revalidate";
    }
    location = /llms-full.txt {
        default_type text/plain;
        add_header Cache-Control "public, max-age=300, must-revalidate";
    }
    location = /robots.txt {
        default_type text/plain;
        add_header Cache-Control "public, max-age=3600, must-revalidate";
    }
    location = /sitemap.xml {
        default_type application/xml;
        add_header Cache-Control "public, max-age=3600, must-revalidate";
    }

    # ── API proxy to api.instanode.dev ──────────────────────────────────
    # The dashboard uses same-origin fetches; here we forward them
    # server-side so the browser never sees the cross-origin host.
    location ~ ^/(api|auth|claim|db|cache|nosql|queue|storage|webhook)(/|$) {
        proxy_pass         https://api.instanode.dev;
        proxy_http_version 1.1;
        proxy_set_header   Host                api.instanode.dev;
        proxy_set_header   X-Forwarded-For     $proxy_add_x_forwarded_for;
        proxy_set_header   X-Forwarded-Proto   $scheme;
        proxy_ssl_server_name on;
        proxy_read_timeout 300s;
    }

    location ^~ /.well-known/ {
        proxy_pass         https://api.instanode.dev;
        proxy_http_version 1.1;
        proxy_set_header   Host                api.instanode.dev;
        proxy_ssl_server_name on;
    }

    # ── Static asset caching ────────────────────────────────────────────
    location /assets/ {
        # Vite emits hashed filenames; cache forever.
        add_header Cache-Control "public, max-age=31536000, immutable";
        try_files $uri =404;
    }

    location ~* \.(?:png|jpg|jpeg|svg|webp|ico|woff2?)$ {
        add_header Cache-Control "public, max-age=86400";
        try_files $uri =404;
    }

    # ── SPA fallback ────────────────────────────────────────────────────
    # Every unmatched route falls through to index.html so React Router
    # owns it. Critical: index.html itself must NOT be cached.
    location / {
        add_header Cache-Control "no-cache, no-store, must-revalidate";
        add_header Pragma "no-cache";
        add_header Expires "0";
        try_files $uri $uri/ /index.html;
    }

    # Health endpoint for k8s probes.
    location = /healthz {
        access_log off;
        default_type text/plain;
        return 200 "ok\n";
    }
}