Replaced self_service.sh with service.py

roles/nginx-webserver/templates/index.php.j2

@@ -14,9 +14,10 @@
     <p>Kernel: {{ ansible_facts.kernel }}</p>
     <p>Memory usage: {{ ansible_facts.memfree_mb }}/{{ ansible_facts.memtotal_mb }}MB</p>
     <p>Python version: {{ ansible_facts.python_version }}</p>
+    {% if groups['postgresql'] is defined and groups['postgresql']|length > 0 %}
     <p>
       <?php
-        $db_handle = pg_connect("host=192.168.56.16 dbname=test user=postgres password=coolshit");
+        $db_handle = pg_connect("host={{ groups['postgresql'][0] }} dbname=test user=postgres password={{ hostvars[groups['postgresql'][0]]['psql_pass'] }}");
         if ($db_handle) {
           echo "Connection attempt succeeded.\n";
         } else {
@@ -27,5 +28,6 @@
         var_dump(pg_fetch_all($result));
       ?>
     </p>
+    {% endif %}
   </body>
 </html>