tilecache: Add first pass nginx QoS

[chef.git] / cookbooks / tilecache / templates / default / nginx_tile_ssl.conf.erb

diff --git a/cookbooks/tilecache/templates/default/nginx_tile_ssl.conf.erb b/cookbooks/tilecache/templates/default/nginx_tile_ssl.conf.erb
index c27a531b35bef15f912eb29bdf460ec85b1e28dc..14a13a0e73e798c4cd8cff5358f320967f7ef98b 100644 (file)
--- a/cookbooks/tilecache/templates/default/nginx_tile_ssl.conf.erb
+++ b/cookbooks/tilecache/templates/default/nginx_tile_ssl.conf.erb
@@ -1,16 +1,98 @@
+upstream tile_cache_backend {
+    server 127.0.0.1;
+    <% @caches.each do |cache| -%>
+    <% if cache[:hostname] != node[:hostname] -%>
+    #Server <%= cache[:hostname] %>
+    <% cache.ipaddresses(:family => :inet, :role => :external).sort.each do |address| -%>
+    server <%= address %> backup;
+    <% end -%>
+    <% end -%>
+    <% end -%>
+
+    keepalive 32;
+}
+
+# Rates table based on cookie value
+map $cookie_qos_token $limit_rate_qos {
+  default 8192; # Default Rate
+  "test" 32768; # FIXME - Future TOTP Token
+}
+
+map $cookie_qos_token $cookie_qos_token_set {
+  # Cookie Domain per RFC 6265
+  default 'qos_token=test; Secure; httponly; Max-Age=3600; Domain=tile.openstreetmap.org; Path=/'; # FIXME - Future TOTP Token
+  "test" ''; # Do not Set-Cookie if current is valid
+}
+
+map $http_user_agent $approved_scraper {
+  default '';                       # Not approved
+  '~^JOSM\/' 'JOSM';
+  '~^Mozilla\/5\.0\ QGIS\/' 'QGIS';
+}
+
+# Limit Cache-Control header to only approved User-Agents
+map $http_user_agent $limit_http_cache_control {
+  default '';                              # Unset Header
+  '~^Mozilla\/5\.0\ QGIS\/' '';            # Unset Header
+  '~^Mozilla\/5\.0\ ' $http_cache_control; # Pass Header
+}
+
+# Limit Pragma header to only approved User-Agents
+map $http_user_agent $limit_http_pragma {
+  default '';                       # Unset Header
+  '~^Mozilla\/5\.0\ QGIS\/' '';     # Unset Header
+  '~^Mozilla\/5\.0\ ' $http_pragma; # Pass Header
+}
+
 server {
-    listen       443 ssl;
+    listen       443 ssl fastopen=2048 http2 default_server;
     server_name  localhost;
 
-    ssl_certificate      /etc/ssl/certs/tile.openstreetmap.pem;
-    ssl_certificate_key  /etc/ssl/private/tile.openstreetmap.key;
+    proxy_buffers 8 64k;
 
-    ssl_protocols TLSv1 TLSv1.1 TLSv1.2 SSLv3;
-    ssl_ciphers aRSA+HIGH:+kEDH:+kRSA:!kSRP:!kPSK:+3DES:!MD5;
+    ssl_certificate      /etc/ssl/certs/<%= @certificate %>.pem;
+    ssl_certificate_key  /etc/ssl/private/<%= @certificate %>.key;
+
+    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
+    ssl_ciphers <%= node[:ssl][:ciphers] -%>;
     ssl_prefer_server_ciphers on;
-    ssl_session_cache shared:SSL:30m;
-    ssl_session_timeout 15m;
+    ssl_session_cache shared:SSL:50m;
+    ssl_session_timeout 30m;
+    ssl_stapling on;
+    ssl_dhparam /etc/ssl/certs/dhparam.pem;
+    resolver <%= @resolvers.join(" ") %>;
+    resolver_timeout 5s;
+
+    location / {
+      proxy_pass http://tile_cache_backend;
+      proxy_set_header X-Forwarded-For $remote_addr;
+      proxy_http_version 1.1;
+      proxy_set_header Connection '';
+
+      proxy_connect_timeout 5s;
+
+      # Do not pass cookies to backends.
+      proxy_set_header Cookie '';
+      # Do not pass Accept-Encoding to backends.
+      proxy_set_header Accept-Encoding '';
+
+      # Do not allow setting cookies from backends due to caching.
+      proxy_ignore_headers Set-Cookie;
+      proxy_hide_header Set-Cookie;
+
+      # Set a QoS cookie if none presented (uses nginx Map)
+      add_header Set-Cookie $cookie_qos_token_set;
+
+      # QoS Traffic Rate see $limit_rate on http://nginx.org/en/docs/http/ngx_http_core_module.html
+      set $limit_rate $limit_rate_qos;
 
-    location / { proxy_pass http://127.0.0.1; proxy_set_header X-Forwarded-For $remote_addr; }
+      # Allow Higher Traffic Rate from Approved User-Agents which do not support cookies (uses nginx Map)
+      if ($approved_scraper) {
+        set $limit_rate 16384;
+      }
 
+      # Allow cache purging headers only from select User-Agents (uses nginx Map)
+      proxy_set_header Cache-Control $limit_http_cache_control;
+      proxy_set_header Pragma $limit_http_pragma;
+    }
 }