Support kubelet environment file

ansible/roles/kubernetes-common/tasks/main.yml

@@ -32,12 +32,19 @@
 - name: drop extra args kubelet config
   template:
     backup: True
-    dest: /etc/systemd/system/kubelet.service.d/09-extra-args.conf
-    src: etc/systemd/system/kubelet.service.d/09-extra-args.conf
+    dest: "/etc/{{ 'default' if ansible_os_family == 'Debian' else 'sysconfig' }}/kubelet"
+    src: etc/default/kubelet
   notify:
     - restart kubelet
   when: kubernetes_common_primary_interface is defined or kubernetes_common_kubelet_extra_args is defined
 
+- name: delete old kubelet extra args unit file
+  file:
+    dest: /etc/systemd/system/kubelet.service.d/09-extra-args.conf
+    state: absent
+  notify:
+    - restart kubelet
+
 - name: open kubelet ports
   firewalld:
     port: "{{ item }}"

ansible/roles/kubernetes-common/templates/etc/default/kubelet

@@ -0,0 +1 @@
+KUBELET_EXTRA_ARGS={% if kubernetes_common_primary_interface is defined %} --node-ip={{kubernetes_node_ip}}{% endif %}{% for k, v in kubernetes_common_kubelet_extra_args.items() %} --{{k}}='{{v}}'{%- endfor %}