- Validate config as a task (Ansible's validate requires specifying the config file).

tasks/main.yml

@@ -89,7 +89,6 @@
       owner: root
       group: 0
       mode: 0o0644
-      validate: nginx -t
   notify:
   - Reload Nginx
 
@@ -103,10 +102,13 @@
       owner: root
       group: 0
       mode: 0o0644
-      validate: nginx -t
   notify:
   - Reload Nginx
 
+- name: Validate config
+  command: nginx -t
+  changed_when: False
+
 - name: Enable service
   service:
       name: nginx