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@gbrayut
Created March 29, 2024 22:44
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KCC GKE cgroupMode Testing
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"
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gbrayut commented Mar 29, 2024

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

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