KCC GKE cgroupMode Testing

gke-cgroupmode-test.yaml

apiVersion: compute.cnrm.cloud.google.com/v1beta1
kind: ComputeNetwork
metadata:
  annotations:
    cnrm.cloud.google.com/management-conflict-prevention-policy: "none"
    cnrm.cloud.google.com/deletion-policy: "abandon"
  name: default
spec:
  description: Default network for the project
---
apiVersion: container.cnrm.cloud.google.com/v1beta1
kind: ContainerCluster
metadata:
  #annotations:
  #  cnrm.cloud.google.com/management-conflict-prevention-policy: "none"
  #  cnrm.cloud.google.com/deletion-policy: "abandon"
  labels:
    label-one: "value-one"
  name: cluster-sample-cgroup-123
spec:
  location: us-central1-a
  initialNodeCount: 1
  networkRef:
    name: default
  subnetworkRef:
    external: projects/gregbray-kcc/regions/us-central1/subnetworks/default
  ipAllocationPolicy:
    clusterIpv4CidrBlock: /20
    servicesIpv4CidrBlock: /20
  monitoringConfig:
    managedPrometheus:
      enabled: false
  clusterAutoscaling:
    enabled: true
    autoscalingProfile: BALANCED
    resourceLimits:
      - resourceType: cpu
        maximum: 100
        minimum: 10
      - resourceType: memory
        maximum: 1000
        minimum: 100
  nodeConfig:
    linuxNodeConfig:
      sysctls:
        net.core.somaxconn: "4095"
      cgroupMode: "CGROUP_MODE_V1"
---
apiVersion: container.cnrm.cloud.google.com/v1beta1
kind: ContainerNodePool
metadata:
  name: nodepool-none
spec:
  initialNodeCount: 1
  location: us-central1-a
  autoscaling:
    minNodeCount: 1
    maxNodeCount: 3
  clusterRef:
    name: cluster-sample-cgroup-123
  nodeConfig:
    linuxNodeConfig:
      sysctls:
        net.core.somaxconn: "4095"
      cgroupMode: "CGROUP_MODE_V1"
---
apiVersion: container.cnrm.cloud.google.com/v1beta1
kind: ContainerNodePool
metadata:
  name: nodepool-both
spec:
  initialNodeCount: 1
  location: us-central1-a
  autoscaling:
    minNodeCount: 1
    maxNodeCount: 3
  clusterRef:
    name: cluster-sample-cgroup-123
  nodeConfig:
    linuxNodeConfig:
      sysctls:
        net.core.somaxconn: "4095"
      cgroupMode: "CGROUP_MODE_V2"
---
apiVersion: container.cnrm.cloud.google.com/v1beta1
kind: ContainerNodePool
metadata:
  name: nodepool-sysctl
spec:
  initialNodeCount: 1
  location: us-central1-a
  autoscaling:
    minNodeCount: 1
    maxNodeCount: 3
  clusterRef:
    name: cluster-sample-cgroup-123
  nodeConfig:
    linuxNodeConfig:
      sysctls:
        net.core.somaxconn: "4095"
---
apiVersion: container.cnrm.cloud.google.com/v1beta1
kind: ContainerNodePool
metadata:
  name: nodepool-cgroup
spec:
  initialNodeCount: 1
  location: us-central1-a
  autoscaling:
    minNodeCount: 1
    maxNodeCount: 3
  clusterRef:
    name: cluster-sample-cgroup-123
  nodeConfig:
    linuxNodeConfig:
      cgroupMode: "CGROUP_MODE_UNSPECIFIED"

Test data for GoogleCloudPlatform/k8s-config-connector#1463
Verify changes on nodes using: stat -fc %T /sys/fs/cgroup/; cat /proc/sys/net/core/somaxconn
where tmpfs = cgroupv1