设置k8s node最大pod数量

默认情况下k8s 一个node最多起110个pod.No more than 110 pods per nodeNo more than 5000 nodesNo more than 150000 total podsNo more than 300000 total containers如何修改一个node中起的pod数量呢？在Node上设置打开文件/var/lib/kubelet/confi

liurizhou

10137人浏览 · 2021-07-29 15:55:20

liurizhou · 2021-07-29 15:55:20 发布

默认情况下k8s 一个node最多起110个pod.

No more than 110 pods per node
No more than 5000 nodes
No more than 150000 total pods
No more than 300000 total containers

如何修改一个node中起的pod数量呢？

在Node上设置打开文件/var/lib/kubelet/config.yaml

修改参数maxPods为指定的值：

clusterDomain: cluster.local
cpuManagerReconcilePeriod: 0s
evictionPressureTransitionPeriod: 0s
fileCheckFrequency: 0s
healthzBindAddress: 127.0.0.1
healthzPort: 10248
httpCheckFrequency: 0s
imageMinimumGCAge: 0s
kind: KubeletConfiguration
logging: {}
nodeStatusReportFrequency: 0s
nodeStatusUpdateFrequency: 0s
resolvConf: /run/systemd/resolve/resolv.conf
rotateCertificates: true
runtimeRequestTimeout: 0s
shutdownGracePeriod: 0s
shutdownGracePeriodCriticalPods: 0s
staticPodPath: /etc/kubernetes/manifests
streamingConnectionIdleTimeout: 0s
syncFrequency: 0s
volumeStatsAggPeriod: 0s
maxPods: 200

node端重启kubelet

sudo systemctl restart kubelet 

查询状态：

$ kubectl describe node host07  |  grep -i "Capacity\|Allocatable" -A 6
Capacity:
  cpu:                192
  ephemeral-storage:  9298787068Ki
  hugepages-1Gi:      0
  hugepages-2Mi:      0
  memory:             1056273036Ki
  pods:               200
Allocatable:
  cpu:                192
  ephemeral-storage:  8569762147680
  hugepages-1Gi:      0
  hugepages-2Mi:      0
  memory:             1056170636Ki
  pods:               200

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