use cgroupfs instead of systemd

Author: llaoj

inventory/my-cluster/group_vars/k8s_cluster/custom.yml

@@ -1,8 +1,3 @@
-# disable checksum for kube binary
-kubeadm_binary_checksum: ""
-kubelet_binary_checksum: ""
-kubectl_binary_checksum: ""
-
 # Download URLs
 aliyun_oss_url: "https://llaoj.oss-cn-beijing.aliyuncs.com/files"
 kubelet_download_url: "{{ aliyun_oss_url }}/storage.googleapis.com/kubernetes-release/release/{{ kube_version }}/bin/linux/{{ image_arch }}/kubelet"
@@ -28,11 +23,14 @@ containerd_download_url: "{{ aliyun_oss_url }}/github.com/containerd/containerd/
 cri_dockerd_download_url: "{{ aliyun_oss_url }}/github.com/Mirantis/cri-dockerd/releases/download/v{{ cri_dockerd_version }}/cri-dockerd-{{ cri_dockerd_version }}.{{ image_arch }}.tgz"
 skopeo_download_url: "{{ aliyun_oss_url }}/github.com/lework/skopeo-binary/releases/download/{{ skopeo_version }}/skopeo-linux-{{ image_arch }}"
 
-# container image
+# disable checksum for kube binary
+kubeadm_binary_checksum: ""
+kubelet_binary_checksum: ""
+kubectl_binary_checksum: ""
 
+# container image
 acr_image_repo: registry.cn-beijing.aliyuncs.com/llaoj
 kube_image_repo: "{{ acr_image_repo }}"
-
 etcd_image_repo: "{{ acr_image_repo }}/coreos_etcd"
 calico_node_image_repo: "{{ acr_image_repo }}/calico_node"
 calico_cni_image_repo: "{{ acr_image_repo }}/calico_cni"
@@ -53,7 +51,6 @@ cert_manager_cainjector_image_repo: "{{ acr_image_repo }}/jetstack_cert-manager-
 cert_manager_webhook_image_repo: "{{ acr_image_repo }}/jetstack_cert-manager-webhook"
 metallb_speaker_image_repo: "{{ acr_image_repo }}/metallb_speaker"
 metallb_controller_image_repo: "{{ acr_image_repo }}/metallb_controller"
-
 flannel_image_repo: "{{ acr_image_repo }}/flannelcni_flannel"
 flannel_init_image_repo: "{{ acr_image_repo }}/flannelcni_flannel-cni-plugin"
 netcheck_agent_image_repo: "{{ acr_image_repo }}/mirantis_k8s-netchecker-agent"
@@ -72,10 +69,8 @@ cinder_csi_plugin_image_repo: "{{ acr_image_repo }}/k8scloudprovider_cinder-csi-
 aws_ebs_csi_plugin_image_repo: "{{ acr_image_repo }}/amazon_aws-ebs-csi-driver"
 dashboard_image_repo: "{{ acr_image_repo }}/kubernetesui_dashboard"
 dashboard_metrics_scraper_repo: "{{ acr_image_repo }}/kubernetesui_metrics-scraper"
-
 multus_image_repo: "{{ acr_image_repo }}/k8snetworkplumbingwg_multus-cni"
 kube_vip_image_repo: "{{ acr_image_repo }}/kube-vip_kube-vip"
-
 coredns_image_repo: "{{ acr_image_repo }}/coredns_coredns"
 nodelocaldns_image_repo: "{{ acr_image_repo }}/dns_k8s-dns-node-cache"
 dnsautoscaler_image_repo: "{{ acr_image_repo }}/cpa_cluster-proportional-autoscaler-{{ image_arch }}"
@@ -91,6 +86,7 @@ csi_resizer_image_repo: "{{ acr_image_repo }}/sig-storage_csi-resizer"
 csi_node_driver_registrar_image_repo: "{{ acr_image_repo }}/sig-storage_csi-node-driver-registrar"
 snapshot_controller_image_repo: "{{ acr_image_repo }}/sig-storage_snapshot-controller"
 
-
-
-
+# To enable Pod Overhead feature you have to configure Kubelet with the appropriate cgroup driver
+# The `cgroupfs` works best:
+kubelet_cgroup_driver: cgroupfs
+containerd_use_systemd_cgroup: false