diff --git a/classes/cluster/k8s-ha-calico-flannel-virtlet/infra/init.yml b/classes/cluster/k8s-ha-calico-flannel-virtlet/infra/init.yml
index 3adfcb3..f3e1fdf 100644
--- a/classes/cluster/k8s-ha-calico-flannel-virtlet/infra/init.yml
+++ b/classes/cluster/k8s-ha-calico-flannel-virtlet/infra/init.yml
@@ -26,3 +26,7 @@
     system:
       name: ${_param:infra_config_hostname}
       domain: ${_param:cluster_domain}
+  openssh:
+    server:
+      alive:
+        interval: 0