ELB Ingress使用HTTP/2

Ingress支持HTTP/2的方式暴露服务，在默认情况下，客户端与负载均衡之间采用HTTP1.X协议，若需开启HTTP2功能，可在annotation字段中加入如下配置：

kubernetes.io/elb.http2-enable: 'true'

以关联已有ELB为例，yaml配置文件如下。

1.21及以下版本集群：

apiVersion: networking.k8s.io/v1beta1
kind: Ingress 
metadata: 
  name: ingress-test
  annotations: 
    kubernetes.io/elb.id: <your_elb_id>  #替换为您已有的ELB ID
    kubernetes.io/elb.ip: <your_elb_ip>  #替换为您已有的ELB IP
    kubernetes.io/elb.port: '443'
    kubernetes.io/ingress.class: cce
    kubernetes.io/elb.http2-enable: 'true' # 开启HTTP/2功能
spec:
  tls:
  - secretName: ingress-test-secret
  rules: 
  - host: ''
    http: 
      paths: 
      - path: '/'
        backend: 
          serviceName: <your_service_name>  #替换为您的目标服务名称
          servicePort: 80                   #替换为您的目标服务端口
        property:
          ingress.beta.kubernetes.io/url-match-mode: STARTS_WITH

apiVersion: networking.k8s.io/v1
kind: Ingress 
metadata: 
  name: ingress-test
  annotations: 
    kubernetes.io/elb.id: <your_elb_id>  #替换为您已有的ELB ID
    kubernetes.io/elb.ip: <your_elb_ip>  #替换为您已有的ELB IP
    kubernetes.io/elb.port: '443'
    kubernetes.io/elb.http2-enable: 'true' # 开启HTTP/2功能
spec:
  tls: 
  - secretName: ingress-test-secret
  rules: 
  - host: ''
    http: 
      paths: 
      - path: '/'
        backend: 
          service:
            name: <your_service_name>  #替换为您的目标服务名称
            port: 
              number: 8080             #替换为您的目标服务端口
        property:
          ingress.beta.kubernetes.io/url-match-mode: STARTS_WITH
        pathType: ImplementationSpecific
  ingressClassName: cce 

表6 HTTP/2参数说明