Added extra useful Nginx variables.

README.md

@@ -31,17 +31,29 @@ If you are configuring Nginx as a load balancer, you can define one or more upst
 The user under which Nginx will run. Defaults to `nginx` for RedHat, and `www-data` for Debian.
 
     nginx_worker_processes: "1"
-    nginx_worker_connections: "8192"
+    nginx_worker_connections: "1024"
 
 `nginx_worker_processes` should be set to the number of cores present on your machine. Connections (find this number with `grep processor /proc/cpuinfo | wc -l`). `nginx_worker_connections` is the number of connections per process. Set this higher to handle more simultaneous connections (and remember that a connection will be used for as long as the keepalive timeout duration for every client!).
 
-    nginx_client_max_body_size: "64m"
+    nginx_error_log: "/var/log/nginx/error.log warn"
+    nginx_access_log: "/var/log/nginx/access.log main buffer=16k"
 
-This value determines the largest file upload possible, as uploads are passed through Nginx before hitting a backend like `php-fpm`. If you get an error like `client intended to send too large body`, it means this value is set too low.
+Configuration of the default error and access logs. Set to `off` to disable a log entirely.
+
+    nginx_sendfile: "on"
+    nginx_tcp_nopush: "on"
+    nginx_tcp_nodelay: "on"
+
+TCP connection options. See [this blog post](https://t37.net/nginx-optimization-understanding-sendfile-tcp_nodelay-and-tcp_nopush.html) for more information on these directives.
 
     nginx_keepalive_timeout: "65"
+    nginx_keepalive_requests: "100"
 
-The keepalive timeout. Should be set higher (10s+) if you have more polling-style traffic (AJAX-powered sites especially), or lower (<10s) if you have a site where most users visit a few pages and don't send any further requests.
+Nginx keepalive settings. Timeout should be set higher (10s+) if you have more polling-style traffic (AJAX-powered sites especially), or lower (<10s) if you have a site where most users visit a few pages and don't send any further requests.
+
+    nginx_client_max_body_size: "64m"
+
+This value determines the largest file upload possible, as uploads are passed through Nginx before hitting a backend like `php-fpm`. If you get an error like `client intended to send too large body`, it means this value is set too low.
 
     nginx_proxy_cache_path: ""
 

defaults/main.yml

@@ -1,8 +1,18 @@
 ---
 nginx_worker_processes: "1"
 nginx_worker_connections: "1024"
-nginx_client_max_body_size: "64m"
+
+nginx_error_log: "/var/log/nginx/error.log warn"
+nginx_access_log: "/var/log/nginx/access.log main buffer=16k"
+
+nginx_sendfile: "on"
+nginx_tcp_nopush: "on"
+nginx_tcp_nodelay: "on"
+
 nginx_keepalive_timeout: "65"
+nginx_keepalive_requests: "100"
+
+nginx_client_max_body_size: "64m"
 
 nginx_proxy_cache_path: ""
 

templates/nginx.conf.j2

@@ -1,6 +1,6 @@
 user  {{ nginx_user }};
 
-error_log  /var/log/nginx/error.log warn;
+error_log  {{ nginx_error_log }};
 pid        /var/run/nginx.pid;
 
 worker_processes  {{ nginx_worker_processes }};
@@ -21,12 +21,14 @@ http {
                       '$status $body_bytes_sent "$http_referer" '
                       '"$http_user_agent" "$http_x_forwarded_for"';
 
-    access_log  /var/log/nginx/access.log  main buffer=16k;
+    access_log  {{ nginx_access_log }};
 
-    sendfile        on;
-    #tcp_nopush     on;
+    sendfile        {{ nginx_sendfile }};
+    tcp_nopush      {{ nginx_tcp_nopush }};
+    tcp_nodelay     {{ nginx_tcp_nodelay }};
 
     keepalive_timeout  {{ nginx_keepalive_timeout }};
+    keepalive_requests {{ nginx_keepalive_requests }};
 
     #gzip  on;