Simplify kubelet-config template

roles/kubernetes/node/templates/kubelet-config.v1beta1.yaml.j2

@@ -60,56 +60,16 @@ clusterDNS:
 - {{ dns_address }}
 {% endfor %}
 {# Node reserved CPU/memory #}
-{% if kube_reserved | bool %}
-kubeReservedCgroup: {{ kube_reserved_cgroups }}
-kubeReserved:
-{% if is_kube_master | bool %}
-  cpu: {{ kube_master_cpu_reserved }}
-  memory: {{ kube_master_memory_reserved }}
-{% if kube_master_ephemeral_storage_reserved is defined %}
-  ephemeral-storage: {{ kube_master_ephemeral_storage_reserved }}
-{% endif %}
-{% if kube_master_pid_reserved is defined %}
-  pid: "{{ kube_master_pid_reserved }}"
-{% endif %}
-{% else %}
-  cpu: {{ kube_cpu_reserved }}
-  memory: {{ kube_memory_reserved }}
-{% if kube_ephemeral_storage_reserved is defined %}
-  ephemeral-storage: {{ kube_ephemeral_storage_reserved }}
-{% endif %}
-{% if kube_pid_reserved is defined %}
-  pid: "{{ kube_pid_reserved }}"
-{% endif %}
-{% endif %}
-{% endif %}
-{% if system_reserved | bool %}
-systemReservedCgroup: {{ system_reserved_cgroups }}
-systemReserved:
-{% if is_kube_master | bool %}
-  cpu: {{ system_master_cpu_reserved }}
-  memory: {{ system_master_memory_reserved }}
-{% if system_master_ephemeral_storage_reserved is defined %}
-  ephemeral-storage: {{ system_master_ephemeral_storage_reserved }}
-{% endif %}
-{% if system_master_pid_reserved is defined %}
-  pid: "{{ system_master_pid_reserved }}"
-{% endif %}
-{% else %}
-  cpu: {{ system_cpu_reserved }}
-  memory: {{ system_memory_reserved }}
-{% if system_ephemeral_storage_reserved is defined %}
-  ephemeral-storage: {{ system_ephemeral_storage_reserved }}
-{% endif %}
-{% if system_pid_reserved is defined %}
-  pid: "{{ system_pid_reserved }}"
-{% endif %}
-{% endif %}
+{% for scope in "kube", "system" %}
+{% if lookup('ansible.builtin.vars', scope + "_reserved") | bool %}
+{{ scope }}ReservedCgroup: {{ lookup('ansible.builtin.vars', scope + '_reserved_cgroup') }}
+{{ scope }}Reserved:
+{% for resource in "cpu", "memory", "ephemeral-storage", "pid" %}
+  {{ resource }}: "{{ lookup('ansible.builtin.vars', scope + '_' ~ (resource | replace('-', '_')) + '_reserved', default='') }}"
+{% endfor %}
 {% endif %}
-{% if is_kube_master | bool and eviction_hard_control_plane is defined and eviction_hard_control_plane %}
-evictionHard:
-  {{ eviction_hard_control_plane | to_nice_yaml(indent=2) | indent(2) }}
-{% elif not is_kube_master | bool and eviction_hard is defined and eviction_hard %}
+{% endfor %}
+{% if eviction_hard is defined and eviction_hard %}
 evictionHard:
   {{ eviction_hard | to_nice_yaml(indent=2) | indent(2) }}
 {% endif %}