ansible/roles/nginx/templates/nginx.conf.j2

user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
	worker_connections 768;
	# multi_accept on;
}

http {

	##
	# Basic Settings
	##

	sendfile on;
	tcp_nopush on;
	tcp_nodelay on;
	keepalive_timeout 65;
	types_hash_max_size 2048;
	server_tokens off;

	server_names_hash_bucket_size 64;
	# server_name_in_redirect off;

	include /etc/nginx/mime.types;
	default_type application/octet-stream;

	##
	# SSL Settings
	##

	ssl_dhparam /etc/nginx/dhparam.pem;
	ssl_protocols TLSv1.2 TLSv1.3; # Dropping SSLv3, ref: POODLE
	ssl_prefer_server_ciphers off;
	ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;

	ssl_session_timeout 1d;
	ssl_session_cache shared:MozSSL:10m;
	ssl_session_tickets off;

	ssl_stapling on;
	ssl_stapling_verify on;

	##
	# Logging Settings
	##

{% if nginx_anonymize %}
	map $remote_addr $ip_anonym1 {
		default 0.0.0;
		"~(?P<ip>(\d+)\.(\d+)\.(\d+))\.\d+" $ip;
		"~(?P<ip>[^:]+:[^:]+):" $ip;
	}

	map $remote_addr $ip_anonym2 {
		default .0;
		"~(?P<ip>(\d+)\.(\d+)\.(\d+))\.\d+" .0;
		"~(?P<ip>[^:]+:[^:]+):" ::;
	}

	map $ip_anonym1$ip_anonym2 $ip_anonymized {
		default 0.0.0.0;
		"~(?P<ip>.*)" $ip;
	}

	log_format anonymized '$ip_anonymized - $remote_user [$time_local] '
		'"$request" $status $body_bytes_sent '
		'"$http_referer" "$http_user_agent"';

	access_log /var/log/nginx/access.log anonymized;
{% else %}
	access_log /var/log/nginx/access.log;
{% endif %}
	error_log /var/log/nginx/error.log;

	##
	# Gzip Settings
	##

	gzip on;

	gzip_vary on;
	gzip_proxied any;
	# gzip_comp_level 6;
	# gzip_buffers 16 8k;
	# gzip_http_version 1.1;
	gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

	##
	# Virtual Host Configs
	##

	include /etc/nginx/conf.d/*.conf;
	include /etc/nginx/sites-enabled/*;
}