dependencies for kubelet.service (#11297)

Signed-off-by: serge Hartmann <serge.hartmann@gmail.com>

roles/kubernetes/node/defaults/main.yml

@@ -23,6 +23,9 @@ kubelet_kubelet_cgroups_cgroupfs: "/system.slice/kubelet.service"
 # Set systemd service hardening features
 kubelet_systemd_hardening: false
 
+# Kubelet service dependencies other than container runtime
+kubelet_systemd_wants_dependencies: []
+
 # List of secure IPs for kubelet
 kube_node_addresses: >-
   {%- for host in (groups['kube_control_plane'] + groups['kube_node'] + groups['etcd']) | unique -%}

roles/kubernetes/node/templates/kubelet.service.j2

@@ -7,6 +7,11 @@ Wants=docker.socket
 {% else %}
 Wants={{ container_manager }}.service
 {% endif %}
+{% for kubelet_dependency in kubelet_systemd_wants_dependencies|default([]) %}
+{% if kubelet_dependency|length > 0 %}
+Wants={{ kubelet_dependency }}
+{% endif %}
+{% endfor %}
 
 [Service]
 EnvironmentFile=-{{ kube_config_dir }}/kubelet.env