Add support for redis

roles/mastodon/tasks/main.yml

@@ -49,8 +49,9 @@
     path: /usr/local/bin/feeds-build.sh
     mode: '0755'
 
-- import_tasks: redis.yml
-  when: ansible_hostname == REDIS_HOST
+- name: Configure redis
+  import_tasks: redis.yml
+  when: RUN_REDIS is defined and RUN_REDIS
 
 - import_tasks: maintenance.yml
   when: ansible_hostname == MAINTENANCE_HOST

roles/mastodon/tasks/redis.yml

@@ -1,5 +1,9 @@
----
-- name: Install redis server
-  package:
-    name: redis-server
-    state: present
+- name: Set overcommit memory
+  sysctl:
+    name: vm.overcommit_memory
+    value: '1'
+
+- name: Set redis.conf
+  copy:
+    dest: /home/mastodon/live/redis/redis.conf
+    src: redis.conf