k8s 1.28.x node资源预留

当前NOde的配置

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默认位置如下:

vim /var/lib/kubelet/config.yaml
#再最后添加如下，参加应该大家一看就明白什么意思，不做多解释了
#max-pods: 230
evictionHard:
  memory.available: 100Mi
  nodefs.available: 10%
  nodefs.inodesFree: 5%
kubeReserved:
  cpu: 1000m
  ephemeral-storage: 1Gi
  memory: 2048Mi

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预留后可以使用的资源

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pods数量调整参数(–max-pods=2030)

vim /etc/systemd/system/kubelet.service.d/10-kubeadm.conf

[Service]
Environment="KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf --max-pods=2030"  <<<----调整你需要的pods 数量
Environment="KUBELET_CONFIG_ARGS=--config=/var/lib/kubelet/config.yaml"
# This is a file that "kubeadm init" and "kubeadm join" generates at runtime, populating the KUBELET_KUBEADM_ARGS variable dynamically
EnvironmentFile=-/var/lib/kubelet/kubeadm-flags.env
# This is a file that the user can use for overrides of the kubelet args as a last resort. Preferably, the user should use
# the .NodeRegistration.KubeletExtraArgs object in the configuration files instead. KUBELET_EXTRA_ARGS should be sourced from this file.
EnvironmentFile=-/etc/default/kubelet
ExecStart=
ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_ARGS $KUBELET_EXTRA_ARGS