ansible-playbooks/general#19 Set role header

tasks/main.yml

 ---
 # file: roles/memcache/tasks/main.yml
 
-- name: "Install MemCache"
-  apt:
-    pkg='{{item}}'
-    state='installed'
-    update_cache=yes
-  with_items:
-    - php5-memcached
-    - memcached
-  when: php_version|default('5.5') != '7'
+- name: "MemCache Role"
+  set_fact: role_memcache_started=true
+  tags: always
+
+- block:
+
+  - name: "Install MemCache"
+    apt:
+      pkg='{{item}}'
+      state='installed'
+      update_cache=yes
+    with_items:
+      - php5-memcached
+      - memcached
+    when: php_version|default('5.5') != '7'
+
+  when: '"memcache" not in excluded_roles'