configure cgroups

setup/setup.yml

@@ -80,6 +80,15 @@
         update_cache: yes
         name: ["kubelet", "kubeadm", "kubectl"]
         state: present
+    - name: configure cgroup driver in kubelet
+      lineinfile:
+        path: /var/lib/kubelet/config.yaml
+        line: 'cgroupDriver: systemd'
+        regexp: '^cgroupDriver:.*'
+    - name: configure kubeadm-env
+      template:
+        src: templates/kubeadm-flags.env
+        dest: /var/lib/kubelet/kubeadm-flags.env
     - name: restart system
       command: reboot
       tags: ['initial', 'never']

setup/templates/daemon.json

@@ -0,0 +1,8 @@
+{
+  "exec-opts": ["native.cgroupdriver=systemd"],
+  "log-driver": "json-file",
+  "log-opts": {
+    "max-size": "100m"
+  },
+  "storage-driver": "overlay2"
+}

setup/templates/kubeadm-flags.env

@@ -0,0 +1 @@
+KUBELET_KUBEADM_ARGS=--cgroup-driver=systemd --network-plugin=cni --pod-infra-container-image=k8s.gcr.io/pause:3.1

setup/templates/wg-k8s.conf

@@ -3,9 +3,9 @@ PrivateKey = {{ wg_secret_key }}
 ListenPort = 51820
 
 [Peer]
-Endpoint = {{ hostvars['cluster-master'].ansible_ssh_host }}:51820
-PublicKey = {{ hostvars['cluster-master'].wg_public_key }}
-AllowedIPs = {{ hostvars['cluster-master'].wg_ip }}/32
+Endpoint = {{ hostvars['cluster-master01'].ansible_ssh_host }}:51820
+PublicKey = {{ hostvars['cluster-master01'].wg_public_key }}
+AllowedIPs = {{ hostvars['cluster-master01'].wg_ip }}/32
 
 [Peer]
 Endpoint = {{ hostvars['cluster-worker01'].ansible_ssh_host }}:51820