# k8srequiredresources
#### 基本信息
- 策略类型：合规
- 推荐级别：L1
- 生效资源类型：Pod
- 参数：
  ```
  exemptImages：字符串数组
  limits
    cpu
    memory
  requests
    cpu
    memory
  ```
  
 
#### 作用
约束容器资源使用。
#### 策略实例示例
必须配置内存的Limit，CPU和内存的Request。
```
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequiredResources
metadata:
  name: container-must-have-cpu-requests-memory-limits-and-requests
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
  parameters:
    limits:
      - memory
    requests:
      - cpu
      - memory
```
#### 符合策略实例的资源定义
已经配置内存的Limit，CPU和内存的Request，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:
        limits:
          cpu: "100m"
          memory: "1Gi"
        requests:
          cpu: "100m"
          memory: "1Gi"
```
#### 不符合策略实例的资源定义
没有配置内存的Limit，CPU和内存的Request，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:
        limits:
          memory: "2Gi"k8sexternalips
```