Kubernetes Container、Pod、Namespace内存及CPU限制

[root@xianchaomaster1 magedu-limit-case]# cat case2-pod-memory-and-cpu-limit.yml
#apiVersion: extensions/v1beta1
apiVersion: apps/v1
kind: Deployment
metadata:
  name: limit-test-deployment
  namespace: magedu
spec:
  replicas: 1
  selector:
    matchLabels: #rs or deployment
      app: limit-test-pod
#    matchExpressions:
#      - {key: app, operator: In, values: [ng-deploy-80,ng-rs-81]}
  template:
    metadata:
      labels:
        app: limit-test-pod
    spec:
      containers:
      - name: limit-test-container
        image: lorel/docker-stress-ng
        resources:
          limits:
            cpu: "2"
            memory: "512Mi"
          requests:
            memory: "512M"
            cpu: "2"
        #command: ["stress"]
        args: ["--vm", "3", "--vm-bytes", "256M"]
      #nodeSelector:
      #  env: group1

 

 

[root@xianchaomaster1 magedu-limit-case]# cat case3-LimitRange.yaml
apiVersion: v1
kind: LimitRange
metadata:
  name: limitrange-magedu
  namespace: magedu
spec:
  limits:
  - type: Container       #限制的资源类型
    max:
      cpu: "2"            #限制单个容器的最大CPU
      memory: "2Gi"       #限制单个容器的最大内存
    min:
      cpu: "500m"         #限制单个容器的最小CPU
      memory: "512Mi"     #限制单个容器的最小内存
    default:
      cpu: "500m"         #默认单个容器的CPU限制
      memory: "512Mi"     #默认单个容器的内存限制
    defaultRequest:
      cpu: "500m"         #默认单个容器的CPU创建请求
      memory: "512Mi"     #默认单个容器的内存创建请求
    maxLimitRequestRatio:
      cpu: 2              #限制CPU limit/request比值最大为2
      memory: 2         #限制内存limit/request比值最大为1.5
  - type: Pod
    max:
      cpu: "4"            #限制单个Pod的最大CPU
      memory: "4Gi"       #限制单个Pod最大内存
  - type: PersistentVolumeClaim
    max:
      storage: 50Gi        #限制PVC最大的requests.storage
    min:
      storage: 30Gi        #限制PVC最小的requests.storage

 

最重要的部分

        resources:
          limits:
            cpu: 1
            memory: 1Gi
          requests:
            cpu: 500m
            memory: 512Mi

 

[root@xianchaomaster1 magedu-limit-case]# cat case6-ResourceQuota-magedu.yaml
apiVersion: v1
kind: ResourceQuota
metadata:
  name: quota-magedu
  namespace: magedu
spec:
  hard:
    requests.cpu: "8"
    limits.cpu: "8"
    requests.memory: 8Gi
    limits.memory: 8Gi
    requests.nvidia.com/gpu: 4
    pods: "6"
    services: "6"