diff --git a/ansible/group_vars/nimbus-master.yml b/ansible/group_vars/nimbus-master.yml
index 1824f06..77d68a2 100644
--- a/ansible/group_vars/nimbus-master.yml
+++ b/ansible/group_vars/nimbus-master.yml
@@ -1,2 +1,4 @@
 ---
 nimbus_stats_domain: nimbus-test-status.status.im
+# temporary
+beacon_node_log_level: DEBUG
diff --git a/ansible/group_vars/nimbus-slaves.yml b/ansible/group_vars/nimbus-slaves.yml
new file mode 100644
index 0000000..5e12754
--- /dev/null
+++ b/ansible/group_vars/nimbus-slaves.yml
@@ -0,0 +1,3 @@
+---
+# temporary
+beacon_node_log_level: DEBUG