Redis replica migration.

ansible/playbooks/deploy_redis.yml

@@ -6,9 +6,13 @@
     - ../env_vars/base.yml
 
   tasks:
+    - name: Extract part of hostname to determine container name
+      set_fact:
+        redis_role: "{{ inventory_hostname.split('-')[2] }}"
+    
     - name: Turning off secondary for redis by deleting redis_replica.conf
       copy:
-        dest: /srv/newsblur/docker/redis/redis_replica.conf
+        dest: "/srv/newsblur/docker/redis/redis_{{ redis_role }}_replica.conf"
         content: ""
       tags:
         - never

ansible/roles/redis/tasks/main.yml

@@ -58,9 +58,9 @@
   when: redis_secondary
 
 - name: Remove redis_replica.conf file if not secondary
-  file:
-    path: "/srv/newsblur/docker/redis/redis_{{ redis_role }}_replica.conf"
-    state: absent
+  copy:
+    dest: "/srv/newsblur/docker/redis/redis_{{ redis_role }}_replica.conf"
+    content: ""
   when: not redis_secondary
 
 - name: Create Redis docker volume directory

hetzner migration.md

@@ -27,7 +27,7 @@ aps -l hdb-redis-user-1,hdb-redis-user-2 -t redis
 aps -l hdb-redis-session-1,hdb-redis-session-2 -t redis
 aps -l hdb-redis-story-1,hdb-redis-story-2 -t redis
 aps -l hdb-redis-pubsub -t redis
-# Go into each redis and `SLAVEOF NO ONE`
+apd -l hdb-redis-user-1,hdb-redis-session-1,hdb-redis-story-1,hdb-redis-pubsub -t replicaofnoone
 
 # Elasticsearch