ambassador 学习三 限速处理

与认证类似ambassador 也是委托给三方的其他服务进行限速处理

基本的环境安装可以参考相关文档,主要还是qotm 服务

官方参考实现的简单限速服务

---
apiVersion: v1
kind: Service
metadata:
  name: example-rate-limit
  annotations:
    getambassador.io/config: |
      ---
      apiVersion: ambassador/v0
      kind: RateLimitService
      name: ratelimit
      service: "example-rate-limit:5000"
spec:
  type: ClusterIP
  selector:
    app: example-rate-limit
  ports:
  - port: 5000
    name: http-example-rate-limit
    targetPort: http-api
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: example-rate-limit
spec:
  replicas: 1
  strategy:
    type: RollingUpdate
  template:
    metadata:
      labels:
        app: example-rate-limit
    spec:
      containers:
      - name: example-rate-limit
        image: agervais/ambassador-ratelimit-service:1.0.0
        imagePullPolicy: Always
        ports:
        - name: http-api
          containerPort: 5000
        resources:
          limits:
            cpu: "0.1"
            memory: 100Mi
kubectl apply -f example-rate-limit.yaml

部署状态

服务配置

---
apiVersion: v1
kind: Service
metadata:
name: qotm
annotations:
getambassador.io/config: |
---
apiVersion: ambassador/v0
kind: Mapping
name: qotm_mapping
prefix: /qotm/
service: qotm
rate_limits:
- descriptor: A test case
headers:
- "x-ambassador-test-allow"
spec:
type: ClusterIP
selector:
app: qotm
ports:
- port: 80
name: http-qotm
targetPort: http-api
kubectl apply -f service-config.yaml

测试服务

• 测试脚本

curl -v -H "x-ambassador-test-allow: probably" http://localhost:32190//qotm/quote/1

参考资料

https://www.getambassador.io/user-guide/rate-limiting-tutorial
https://github.com/rongfengliang/ambassador-learning