diff --git a/group_vars/k8s_cluster/plain.yml b/group_vars/k8s_cluster/plain.yml
index 48960db..385e5f0 100644
--- a/group_vars/k8s_cluster/plain.yml
+++ b/group_vars/k8s_cluster/plain.yml
@@ -4,6 +4,11 @@ ip: "{{ stage_private_server_ip | default('-') }}"
 
 ### parameters used by kubespray ###
 
+# must be set when using kubespray release-2.19
+# but cluster was installed with kubespray release-2.18
+# => defaults changed!!!
+ipip: true
+
 cloud_provider: external
 kube_network_plugin: calico
 kube_proxy_metrics_bind_address: 0.0.0.0:10249
diff --git a/group_vars/stage_dev/plain.yml b/group_vars/stage_dev/plain.yml
index a056784..eb0ad1e 100644
--- a/group_vars/stage_dev/plain.yml
+++ b/group_vars/stage_dev/plain.yml
@@ -130,6 +130,12 @@ shared_service_kube_node_03: "{{ stage_server_infos
   | list
   | first
   | default('-') }}"
+shared_service_kube_node_04: "{{ stage_server_infos
+  | selectattr('name', 'match', stage + '-kube-node-04' )
+  | map(attribute='private_ip')
+  | list
+  | first
+  | default('-') }}"
 shared_service_management_ip: "{{ stage_server_infos
   | selectattr('name', 'match', stage + '-management-01' )
   | map(attribute='private_ip')
diff --git a/stage-dev b/stage-dev
index f148fd0..2d65445 100644
--- a/stage-dev
+++ b/stage-dev
@@ -73,6 +73,7 @@ dev-kube-master-03
 dev-kube-node-01
 dev-kube-node-02
 dev-kube-node-03
+dev-kube-node-04
 
 [k8s_cluster:children]
 kube_control_plane