support increasing proxy_connect_timeout

playbooks/roles/nginx/defaults/main.yml

@@ -44,6 +44,13 @@ NGINX_LOG_FORMAT_NAME: 'p_combined'
 # headers to reflect the properties of the incoming request.
 NGINX_SET_X_FORWARDED_HEADERS: False
 
+# Increasing these values allows studio to process more complex operations.  
+# Default timeouts limit CMS connections to 60 seconds.
+
+NGINX_CMS_PROXY_CONNECT_TIMEOUT: !!null
+NGINX_CMS_PROXY_SEND_TIMEOUT: !!null
+NGINX_CMS_PROXY_READ_TIMEOUT: !!null
+
 NGINX_SERVER_ERROR_IMG: 'https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Pendleton_Sinking_Ship.jpg/640px-Pendleton_Sinking_Ship.jpg'
 NGINX_SERVER_HTML_FILES:
   - file: rate-limit.html

playbooks/roles/nginx/templates/edx/app/nginx/sites-available/cms.j2

@@ -104,6 +104,20 @@ error_page {{ k }} {{ v }};
 
     proxy_redirect off;
     proxy_pass http://cms-backend;
+
+    {{ NGINX_EDXAPP_CMS_APP_EXTRA }}
+
+    {% if NGINX_CMS_PROXY_CONNECT_TIMEOUT %}
+    proxy_connect_timeout {{ NGINX_CMS_PROXY_CONNECT_TIMEOUT }};
+    {% endif %}
+    {% if NGINX_CMS_PROXY_SEND_TIMEOUT %}
+    proxy_send_timeout {{ NGINX_CMS_PROXY_SEND_TIMEOUT }};
+    {% endif %}
+    {% if NGINX_CMS_PROXY_READ_TIMEOUT %}
+    proxy_read_timeout {{ NGINX_CMS_PROXY_READ_TIMEOUT }};
+    {% endif %}
+
+    {{ NGINX_EDXAPP_CMS_APP_EXTRA }}
   }
 
   location / {