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80 lines
3.2 KiB
Nginx Configuration File
80 lines
3.2 KiB
Nginx Configuration File
# Canonical nginx config for the EpicNabbo CMS edge.
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# Source of truth: repository deployment/proxy/nginx-cms.conf (the site block)
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# and this file. Installed/synced by scripts/nginx-sync.sh so it cannot be
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# lost again while nginx keeps running on an in-memory copy.
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#
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# Traffic path: Cloudflare -> Traefik (:443) -> nginx (:9443) -> CMS (:3002),
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# with direct Cloudflare-origin and game-client (ws.epicnabbo.nl) connections
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# also terminating on :9443.
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# nginx is the last layer that can still rewrite Cache-Control, so it owns the
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# headers it adds explicitly; everything proxied to the CMS is passed through
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# untouched unless this file says otherwise.
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user www-data;
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worker_processes auto;
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# Raise the file-descriptor rlimit for the workers. Must stay <= the master's
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# RLIMIT_NOFILE *hard* limit, otherwise nginx refuses to start with
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# "setrlimit(RLIMIT_NOFILE) failed". Bounded from above by the systemd drop-in
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# /etc/systemd/system/nginx.service.d/override.conf (LimitNOFILE=65536).
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worker_rlimit_nofile 65536;
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pid /run/nginx.pid;
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error_log /var/log/nginx/error.log warn;
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events {
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worker_connections 2048;
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use epoll;
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}
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http {
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include /etc/nginx/mime.types;
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default_type application/octet-stream;
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# Compression is done once, at the edge (Traefik / Cloudflare). Enabling
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# gzip here too would double-compress proxied responses and fight Vary.
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gzip off;
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sendfile on;
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tcp_nopush on;
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server_tokens off;
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keepalive_timeout 30s;
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# Gamedata/icons are served from disk by alias locations. Caching the
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# stat/open results avoids a syscall storm on every room load.
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open_file_cache max=10000 inactive=30s;
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open_file_cache_valid 60s;
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open_file_cache_min_uses 2;
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open_file_cache_errors off;
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client_max_body_size 64m;
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client_body_buffer_size 16k;
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client_header_buffer_size 1k;
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large_client_header_buffers 4 8k;
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# Rate limiting per client IP.
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#
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# Two zones, because a room load and a page load are not the same thing.
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# Loading a Nitro room fires several hundred gamedata icons in one burst;
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# at the page rate that produced 503s on real players. Static assets
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# therefore get their own, much higher allowance. These are small immutable
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# files, so a request rate is not what protects them anyway — nginx already
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# serves them with must-revalidate, and the CMS upstream stays behind
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# cms_req_per_ip for the expensive routes.
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limit_req_zone $binary_remote_addr zone=cms_req_per_ip:10m rate=30r/s;
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limit_req_zone $binary_remote_addr zone=cms_static_per_ip:10m rate=1000r/s;
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limit_conn_zone $binary_remote_addr zone=cms_conn_per_ip:10m;
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# Blue/green cutover: ci-deploy.sh writes the active upstream here, and
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# `proxy_pass http://cms_app` below follows it via graceful nginx -s reload.
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upstream cms_app {
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include /etc/nginx/snippets/cms_upstream_servers.conf;
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}
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# Cache policy maps and server blocks live in the site file so they are
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# synced together and can never drift apart.
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include /etc/nginx/sites-enabled/*.conf;
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# Trusted edge / real-IP handling (regenerated by scripts/cf-ips-sync.sh
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# from the live Cloudflare ranges; installed via scripts/nginx-sync.sh).
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include /etc/nginx/conf.d/cloudflare-ips.conf;
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} |