adding lists of hosts for nginx backends

playbooks/roles/nginx/defaults/main.yml

@@ -4,6 +4,18 @@ pkgs:
   nginx:
     state: installed
 
+nginx_xserver_gunicorn_hosts:
+  - 127.0.0.1
+nginx_xqueue_gunicorn_hosts:
+  - 127.0.0.1
+nginx_ora_gunicorn_hosts:
+  - 127.0.0.1
+nginx_lms_gunicorn_hosts:
+  - 127.0.0.1
+nginx_lms_preview_gunicorn_hosts:
+  - 127.0.0.1
+nginx_cms_gunicorn_hosts:
+  - 127.0.0.1
 
 nginx_cfg:
   #   - link - turn on

playbooks/roles/nginx/templates/cms.j2

 upstream cms-backend {
-    # For a TCP configuration:
-    server {{ edxapp_cms_gunicorn_host }}:{{ edxapp_cms_gunicorn_port }} fail_timeout=0;
+    {% for host in nginx_cms_gunicorn_hosts %}
+        server {{ host }}:{{ edxapp_cms_gunicorn_port }} fail_timeout=0;
+    {% endfor %}
 }
 
 server {

playbooks/roles/nginx/templates/lms-preview.j2

 upstream lms-preview-backend {
-    # For a TCP configuration:
-    server {{ edxapp_lms_preview_gunicorn_host }}:{{ edxapp_lms_preview_gunicorn_port }} fail_timeout=0;
+    {% for host in nginx_lms_preview_gunicorn_hosts %}
+        server {{ host }}:{{ edxapp_lms_preview_gunicorn_port }} fail_timeout=0;
+    {% endfor %}
 }
 
 server {

playbooks/roles/nginx/templates/lms.j2

 upstream lms-backend {
-    # For a TCP configuration:
-    server {{ edxapp_lms_gunicorn_host }}:{{ edxapp_lms_gunicorn_port }} fail_timeout=0;
+    {% for host in nginx_lms_gunicorn_hosts %}
+        server {{ host }}:{{ edxapp_lms_gunicorn_port }} fail_timeout=0;
+    {% endfor %}
 }
 
 server {

playbooks/roles/nginx/templates/ora.j2

 upstream app_server {
-    # For a TCP configuration:
-    server {{ ora_gunicorn_host }}:{{ ora_gunicorn_port }} fail_timeout=0;
+    {% for host in nginx_ora_gunicorn_hosts %}
+        server {{ host }}:{{ ora_gunicorn_port }} fail_timeout=0;
+    {% endfor %}
 }
 
 server {

playbooks/roles/nginx/templates/xqueue.j2

 upstream xqueue_app_server {
-    # For a TCP configuration:
-    server {{ xqueue_gunicorn_host }}:{{ xqueue_gunicorn_port }} fail_timeout=0;
+    {% for host in nginx_xqueue_gunicorn_hosts %}
+        server {{ host }}:{{ xqueue_gunicorn_port }} fail_timeout=0;
+    {% endfor %}
 }
 
 server {

playbooks/roles/nginx/templates/xserver.j2

@@ -9,8 +9,9 @@
 # Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
 ##
 upstream xserver_app_server {
-    # For a TCP configuration:
-    server {{ xserver_gunicorn_host }}:{{ xserver_gunicorn_port }} fail_timeout=0;
+    {% for host in nginx_xserver_gunicorn_hosts %}
+        server {{ host }}:{{ xserver_gunicorn_port }} fail_timeout=0;
+    {% endfor %}
 }
 
 server {