tilecache: allow nginx to fallback to other caches

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

diff --git a/cookbooks/tilecache/templates/default/nginx_tile.conf.erb b/cookbooks/tilecache/templates/default/nginx_tile.conf.erb
index 49cf412ffd8a30df4794b113a69d5e80bc0a0ffa..76b3f26f5f5a6c9dd01a0b495560d4b231c30d64 100644 (file)
--- a/cookbooks/tilecache/templates/default/nginx_tile.conf.erb
+++ b/cookbooks/tilecache/templates/default/nginx_tile.conf.erb
@@ -1,21 +1,20 @@
 # DO NOT EDIT - This file is being maintained by Chef
 
 upstream tile_cache_backend {
-  server 127.0.0.1;
+  server 127.0.0.1:80;
+  server 127.0.0.2:80;
 
   # Add the other caches to relieve pressure if local squid failing
   # Balancer: round-robin
 <% @caches.each do |cache| -%>
 <% if cache[:hostname] != node[:hostname] -%>
-<% if node[:tilecache][:tile_siblings].include? cache[:fqdn] -%>
 <% cache.ipaddresses(:family => :inet, :role => :external).sort.each do |address| -%>
-  server <%= address %> backup; # Server <%= cache[:hostname] %>
-<% end -%>
+  server <%= address %>:80 backup; # Server <%= cache[:hostname] %>
 <% end -%>
 <% end -%>
 <% end -%>
 
-  keepalive 1024;
+  keepalive 512;
   keepalive_requests 1024;
 }
 
@@ -71,18 +70,23 @@ map $http_referer $denied_referer {
   'http://osm.org'                 1; # Faked
 }
 
+map $http_referer $osm_referer {
+  default                                 '';    # False
+  '~^https:\/\/www\.openstreetmap\.org\/' 'osm'; # True
+}
+
 # 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
+map $osm_referer$http_user_agent $limit_http_cache_control {
+  default '';                                # Unset Header
+  '~^osmMozilla\/5\.0\ QGIS\/' '';            # Unset Header
+  '~^osmMozilla\/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
+map $osm_referer$http_user_agent $limit_http_pragma {
+  default '';                          # Unset Header
+  '~^osmMozilla\/5\.0\ QGIS\/' '';     # Unset Header
+  '~^osmMozilla\/5\.0\ ' $http_pragma; # Pass Header
 }
 
 server {
@@ -172,19 +176,39 @@ server {
     # Dedicated zoom handler for caching
     location /<%= i %>/ {
 <% end %>
+      # Only allow GET / HEAD / OPTIONS (CORS) requests
+      limit_except GET HEAD OPTIONS {
+        deny all;
+      }
+
       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;
+      proxy_connect_timeout 10s;
 
-      # Preserve host header.
-      proxy_set_header Host $host;
+      # Replace host header.
+      proxy_set_header Host 'tile.openstreetmap.org';
       # Do not pass cookies to backends.
       proxy_set_header Cookie '';
       # Do not pass Accept-Encoding to backends.
       proxy_set_header Accept-Encoding '';
+      # Do not pass Accept to backends.
+      proxy_set_header Accept '';
+      # Do not pass Accept-Language to backends as unused.
+      proxy_set_header Accept-Language '';
+      proxy_set_header Accept-Charset '';
+      # Do not send origin, we allow all.
+      proxy_set_header origin '';
+      # Do not pass invalid headers to backend.
+      proxy_set_header X-Forwarded-Host '';
+      proxy_set_header X-Host '';
+      proxy_set_header Authorization '';
+      proxy_set_header Proxy-Authorization '';
+
+      # Drop partial requests
+      proxy_set_header range '';
 
       # Do not allow setting cookies from backends due to caching.
       proxy_ignore_headers Set-Cookie;