mysql/application: Added config for query cache

roles/mysql/application/defaults/main.yml

@@ -1,3 +1,5 @@
 ---
 
 mysql_root_password: "{{ lookup('password', 'credentials/' + inventory_hostname + '/mysql/root length=80' ) }}"
+
+mysql_query_cache_size: 256M

roles/mysql/application/tasks/main.yml

@@ -67,3 +67,11 @@
       innodb_file_per_table=ON
   notify:
     - restart mysql
+
+- name: Configure query cache of mysql
+  template:
+    src: query_cache.cnf
+    dest: "/etc/mysql/conf.d/query_cache.cnf"
+    owner: root
+    group: root
+    mode: "u=rw,g=r,o=r"

roles/mysql/application/templates/query_cache.cnf

@@ -0,0 +1,4 @@
+[mysqld]
+query_cache_type=1
+query_cache_size={{ mysql_query_cache_size }}
+query_cache_limit=4M