diff --git a/roles/mastodon/defaults/main.yml b/roles/mastodon/defaults/main.yml
new file mode 100644
index 0000000..0f7f38a
--- /dev/null
+++ b/roles/mastodon/defaults/main.yml
@@ -0,0 +1,4 @@
+---
+REDIS_HOST: ''
+# Host where cron jobs are run
+MAINTENANCE_HOST: ''
diff --git a/roles/mastodon/tasks/main.yml b/roles/mastodon/tasks/main.yml
index fcfa296..f6ee859 100644
--- a/roles/mastodon/tasks/main.yml
+++ b/roles/mastodon/tasks/main.yml
@@ -29,5 +29,8 @@
     dest: /home/mastodon/live/docker-compose.yml
   notify: "docker-compose up"
 
+- import_tasks: redis.yaml
+  when: ansible_hostname == REDIS_HOST
+
 - import_tasks: maintenance.yml
   when: ansible_hostname == MAINTENANCE_HOST
diff --git a/roles/mastodon/tasks/redis.yml b/roles/mastodon/tasks/redis.yml
new file mode 100644
index 0000000..62cd2a1
--- /dev/null
+++ b/roles/mastodon/tasks/redis.yml
@@ -0,0 +1,5 @@
+---
+- name: Install redis server
+  package:
+    name: redis-server
+    state: present