diff --git a/ansible/roles/stack-sunbird/templates/sunbird_nodebb.env b/ansible/roles/stack-sunbird/templates/sunbird_nodebb.env
index c46fedbc21f1383c62b94845e2bf73fb47281e4f..3d8556ba2f010fde21e5f0bcef592ec8011908a6 100644
--- a/ansible/roles/stack-sunbird/templates/sunbird_nodebb.env
+++ b/ansible/roles/stack-sunbird/templates/sunbird_nodebb.env
@@ -11,6 +11,7 @@ redis__username={{nodebb_db_username|default('')}}
 redis__password={{nodebb_db_password|default('')}}
 # redis database number
 redis__database={{nodebb_db_index_name|default(10)}}
+isCluster={{nodebb_cluster_enable|default('true')}}
 # password won't get overwritten if you run
 # 'node app --setup' multiple times
 # Default username is admin