개요
- Kubelet Configuration
- Kubelet 설정
CAPBK has several ways to configure kubelet. CAPBK는 kubelet을 설정하는 방법은 여러 가지 있습니다.
KubeadmConfigSpec.files를 통해 KubeletConfiguration 파일 전달
KubeadmConfigSpec.files를 사용하여 노드에 파일을 넣을 수 있습니다. 이 예제는 KubeadmConfigSpec.files를 통해 KubeletConfiguration 파일을 노드에 넣고, KubeadmConfigSpec.kubeletExtraArgs를 통해 kubelet이 이를 사용하게 만듭니다. Kubelet Configuration (v1beta1) | Kubernetes에서 KubeletConfiguration의 사용가능한 설정을 확인할 수 있습니다.
이 방법은 kubeadm이 생성한 전체 kubelet 설정을 대체하기에는 쉬운 방법이지만, kubelet 설정의 일부만을 대체하기에는 쉽지 않습니다.
KubeadmControlPlaneTemplate
apiVersion: controlplane.cluster.x-k8s.io/v1beta1
kind: KubeadmControlPlaneTemplate
metadata:
name: cloudinit-control-plane
namespace: default
spec:
template:
spec:
kubeadmConfigSpec:
files:
# We put a KubeletConfiguration file on nodes via KubeadmConfigSpec.files
# In this example, we directly put the file content in the KubeadmConfigSpec.files.content field.
- path: /etc/kubernetes/kubelet/config.yaml
owner: "root:root"
permissions: "0644"
content: |
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
kubeReserved:
cpu: "1"
memory: "2Gi"
ephemeral-storage: "1Gi"
systemReserved:
cpu: "500m"
memory: "1Gi"
ephemeral-storage: "1Gi"
evictionHard:
memory.available: "500Mi"
nodefs.available: "10%"
authentication:
anonymous:
enabled: false
webhook:
cacheTTL: 0s
enabled: true
x509:
clientCAFile: /etc/kubernetes/pki/ca.crt
authorization:
mode: Webhook
webhook:
cacheAuthorizedTTL: 0s
cacheUnauthorizedTTL: 0s
cgroupDriver: systemd
clusterDNS:
- 10.128.0.10
clusterDomain: cluster.local
containerRuntimeEndpoint: ""
cpuManagerReconcilePeriod: 0s
evictionPressureTransitionPeriod: 0s
fileCheckFrequency: 0s
healthzBindAddress: 127.0.0.1
healthzPort: 10248
httpCheckFrequency: 0s
imageMinimumGCAge: 0s
logging:
flushFrequency: 0
options:
json:
infoBufferSize: "0"
verbosity: 0
memorySwap: {}
nodeStatusReportFrequency: 0s
nodeStatusUpdateFrequency: 0s
rotateCertificates: true
runtimeRequestTimeout: 0s
shutdownGracePeriod: 0s
shutdownGracePeriodCriticalPods: 0s
staticPodPath: /etc/kubernetes/manifests
streamingConnectionIdleTimeout: 0s
syncFrequency: 0s
volumeStatsAggPeriod: 0s
initConfiguration:
nodeRegistration:
criSocket: unix:///var/run/containerd/containerd.sock
# Here we configure kubelet to use the KubeletConfiguration file we put on nodes via KubeadmConfigSpec.files
kubeletExtraArgs:
config: "/etc/kubernetes/kubelet/config.yaml"
joinConfiguration:
nodeRegistration:
criSocket: unix:///var/run/containerd/containerd.sock
# Here we configure kubelet to use the KubeletConfiguration file we put on nodes via KubeadmConfigSpec.files
kubeletExtraArgs:
config: "/etc/kubernetes/kubelet/config.yaml"
KubeadmConfigTemplate
apiVersion: bootstrap.cluster.x-k8s.io/v1beta1
kind: KubeadmConfigTemplate
metadata:
name: cloudinit-default-worker-bootstraptemplate
namespace: default
spec:
template:
spec:
files:
# We puts a KubeletConfiguration file on nodes via KubeadmConfigSpec.files
# In this example, we directly put the file content in the KubeadmConfigSpec.files.content field.
- path: /etc/kubernetes/kubelet/config.yaml
owner: "root:root"
permissions: "0644"
content: |
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
kubeReserved:
cpu: "1"
memory: "2Gi"
ephemeral-storage: "1Gi"
systemReserved:
cpu: "500m"
memory: "1Gi"
ephemeral-storage: "1Gi"
evictionHard:
memory.available: "500Mi"
nodefs.available: "10%"
authentication:
anonymous:
enabled: false
webhook:
cacheTTL: 0s
enabled: true
x509:
clientCAFile: /etc/kubernetes/pki/ca.crt
authorization:
mode: Webhook
webhook:
cacheAuthorizedTTL: 0s
cacheUnauthorizedTTL: 0s
cgroupDriver: systemd
clusterDNS:
- 10.128.0.10
clusterDomain: cluster.local
containerRuntimeEndpoint: ""
cpuManagerReconcilePeriod: 0s
evictionPressureTransitionPeriod: 0s
fileCheckFrequency: 0s
healthzBindAddress: 127.0.0.1
healthzPort: 10248
httpCheckFrequency: 0s
imageMinimumGCAge: 0s
logging:
flushFrequency: 0
options:
json:
infoBufferSize: "0"
verbosity: 0
memorySwap: {}
nodeStatusReportFrequency: 0s
nodeStatusUpdateFrequency: 0s
rotateCertificates: true
runtimeRequestTimeout: 0s
shutdownGracePeriod: 0s
shutdownGracePeriodCriticalPods: 0s
staticPodPath: /etc/kubernetes/manifests
streamingConnectionIdleTimeout: 0s
syncFrequency: 0s
volumeStatsAggPeriod: 0s
joinConfiguration:
nodeRegistration:
criSocket: unix:///var/run/containerd/containerd.sock
# Here we configure kubelet to use the KubeletConfiguration file we put on nodes via KubeadmConfigSpec.files
kubeletExtraArgs:
config: "/etc/kubernetes/kubelet/config.yaml"