k8scontainerrequests

基本信息

• 策略类型：合规
• 推荐级别：L1
• 生效资源类型：Pod
• 参数：

  cpu：字符串

  memory：字符串

  exemptImages：字符串数组

作用

限制CPU和内存的Request必须设置且小于配置的最大值。

策略实例示例

示例配置了CPU和内存的最大Request。

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sContainerRequests
metadata:
  name: container-must-have-requests
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
  parameters:
    cpu: "200m"
    memory: "1Gi"

符合策略实例的资源定义

CPU和内存的Request小于配置的最大值，符合策略实例。

apiVersion: v1
kind: Pod
metadata:
  name: opa-allowed
  labels:
    owner: me.agilebank.demo
spec:
  containers:
    - name: opa
      image: openpolicyagent/opa:0.9.2
      args:
        - "run"
        - "--server"
        - "--addr=localhost:8080"
      resources:
        requests:
          cpu: "100m"
          memory: "1Gi"

不符合策略实例的资源定义

内存的Request大于约束的最大值，不符合策略实例。

apiVersion: v1
kind: Pod
metadata:
  name: opa-disallowed
  labels:
    owner: me.agilebank.demo
spec:
  containers:
    - name: opa
      image: openpolicyagent/opa:0.9.2
      args:
        - "run"
        - "--server"
        - "--addr=localhost:8080"
      resources:
        requests:
          cpu: "100m"
          memory: "2Gi"