support reserve ephemeral-storage (#8895)

.gitignore

@@ -4,6 +4,7 @@
 *.iml
 temp
 .idea
+.vscode
 .tox
 .cache
 *.bak

inventory/sample/group_vars/k8s_cluster/k8s-cluster.yml

@@ -252,9 +252,11 @@ podsecuritypolicy_enabled: false
 ## Uncomment to override default values
 # system_memory_reserved: 512Mi
 # system_cpu_reserved: 500m
+# system_ephemeral_storage_reserved: 2Gi
 ## Reservation for master hosts
 # system_master_memory_reserved: 256Mi
 # system_master_cpu_reserved: 250m
+# system_master_ephemeral_storage_reserved: 2Gi
 
 ## Eviction Thresholds to avoid system OOMs
 # https://kubernetes.io/docs/tasks/administer-cluster/reserve-compute-resources/#eviction-thresholds

roles/kubernetes/node/defaults/main.yml

@@ -28,17 +28,21 @@ kubelet_fail_swap_on: true
 # Reserve this space for kube resources
 kube_memory_reserved: 256Mi
 kube_cpu_reserved: 100m
+# kube_ephemeral_storage_reserved: 2Gi
 # Reservation for master hosts
 kube_master_memory_reserved: 512Mi
 kube_master_cpu_reserved: 200m
+# kube_master_ephemeral_storage_reserved: 2Gi
 
 # Set to true to reserve resources for system daemons
 system_reserved: false
 system_memory_reserved: 512Mi
 system_cpu_reserved: 500m
+# system_ephemeral_storage_reserved: 2Gi
 # Reservation for master hosts
 system_master_memory_reserved: 256Mi
 system_master_cpu_reserved: 250m
+# system_master_ephemeral_storage_reserved: 2Gi
 
 ## Eviction Thresholds to avoid system OOMs
 # https://kubernetes.io/docs/tasks/administer-cluster/reserve-compute-resources/#eviction-thresholds

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

@@ -23,7 +23,7 @@ enforceNodeAllocatable:
 {% endfor %}
 {% endif %}
 staticPodPath: {{ kube_manifest_dir }}
-cgroupDriver: {{ kubelet_cgroup_driver }}
+cgroupDriver: {{ kubelet_cgroup_driver | default('systemd') }}
 containerLogMaxFiles: {{ kubelet_logfiles_max_nr }}
 containerLogMaxSize: {{ kubelet_logfiles_max_size }}
 maxPods: {{ kubelet_max_pods }}
@@ -63,18 +63,30 @@ 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 %}
 {% else %}
   cpu: {{ kube_cpu_reserved }}
   memory: {{ kube_memory_reserved }}
+{% if kube_ephemeral_storage_reserved is defined %}
+  ephemeral-storage: {{ kube_ephemeral_storage_reserved }}
+{% endif %}
 {% endif %}
 {% if system_reserved is defined and system_reserved %}
 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 %}
 {% else %}
   cpu: {{ system_cpu_reserved }}
   memory: {{ system_memory_reserved }}
+{% if system_ephemeral_storage_reserved is defined %}
+  ephemeral-storage: {{ system_ephemeral_storage_reserved }}
+{% endif %}
 {% endif %}
 {% endif %}
 {% if is_kube_master|bool and eviction_hard_control_plane is defined and eviction_hard_control_plane %}