1. node節(jié)點(diǎn)label管理

1.1 給節(jié)點(diǎn)加label

• 語法：
  # kubectl label node Node_Name Key=Value
• 示例

# kubectl label node gpu3 gpu-use=true

1.2 查看label

• 語法
  Kubectl get node gpu3 --show-labels

image.png

1.3 修改label

• 語法
  kubectl label node Node_Name Key=Value --overwrite

說明：添加label命令加上 --overwrite參數(shù)

• 示例

 kubectl label node gpu3 gpu-use=true --overwrite

1.4 刪除lable

• 語法
  kubectl label node Node_Name Key-

說明：刪除一個key，只需把key的后邊加一個減號即可

• 示例

# kubectl label node gpu3 gpu_use-

2 pod選擇node節(jié)點(diǎn)

說明：pod根據(jù)node的label選擇節(jié)點(diǎn)

apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: nvidia-device-plugin-daemonset
  namespace: kube-system
spec:
  template:
    metadata:
      annotations:
        scheduler.alpha.kubernetes.io/critical-pod: ""
      labels:
        name: nvidia-device-plugin-ds
    spec:
      tolerations:
      - key: CriticalAddonsOnly
        operator: Exists
     #添加如下兩行
      nodeSelector:
        gpu-use: "true"
      containers:
      - image: nvidia/k8s-device-plugin:1.11
        name: nvidia-device-plugin-ctr
        securityContext:
          capabilities:
            drop: ["ALL"]
        volumeMounts:
          - name: device-plugin
            mountPath: /var/lib/kubelet/device-plugins
      volumes:
        - name: device-plugin
          hostPath:
            path: /var/lib/kubelet/device-plugins