Run post deploy tasks only if site is really ready

tasks/install.yml

@@ -204,8 +204,15 @@
   changed_when: false
   tags: 'deploy'
 
+- name: "Check Drush Status"
+  shell: drush @{{ inventory_hostname }}{{ drushSubkey }} status
+  register: drush_status
+  changed_when: false
+  when: "'@{{ inventory_hostname }}{{ drushSubkey }}' in drush_aliases.stdout_lines"
+  tags: 'deploy'
+
 - name: "Run Post Deploy Tasks"
   shell: drush -y @{{ inventory_hostname }}{{ drushSubkey }} {{ item }}
   with_items: '{{ drupal_post_deploy_tasks[drupal.version|default("d7")] }}'
-  when: "'@{{ inventory_hostname }}{{ drushSubkey }}' in drush_aliases.stdout_lines"
+  when: drush_status is defined and 'Successful' in drush_status.stdout_lines
   tags: 'deploy'