1.Pod 设置容器的资源请求和约束

资源请求设置：spec.containers[].resources.limits.cpu、spec.containers[].resources.limits.memory、spec.containers[].resources.limits.hugepages-<size>
资源约束设置：spec.containers[].resources.requests.cpu、spec.containers[].resources.requests.memory、spec.containers[].resources.requests.hugepages-<size>

apiVersion: v1
kind: Pod
metadata:
  name: frontend
spec:
  containers:
  - name: app
    image: images.my-company.example/app:v4
    resources:
      requests:
        memory: "64Mi"
        cpu: "250m"
      limits:
        memory: "128Mi"
        cpu: "500m"

① CPU 资源的单位：以数量为单位，例如，0.1=100m
② 内存资源的单位：以 E/Ei、P/Pi、T/Ti、G/Gi、M/Mi、k/Ki 为单位，例如，128M=128Mi

2.Deployment 设置容器的资源请求和约束

资源请求设置：spec.template.spec.containers[].resources.limits.cpu、spec.template.spec.containers[].resources.limits.memory、spec.template.spec.containers[].resources.limits.hugepages-<size>
资源约束设置：spec.template.spec.containers[].resources.requests.cpu、spec.template.spec.containers[].resources.requests.memory、spec.template.spec.containers[].resources.requests.hugepages-<size>

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  labels:
    app: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.14.2
        ports:
        - containerPort: 80
        resources:
          requests:
            memory: "128Mi"
            cpu: "500m"
          limits:
            memory: "128Mi"
            cpu: "500m"