Configuring HTTP/2 for a LoadBalancer Ingress
Ingresses can use HTTP/2 to expose Services. Connections from the load balancer to your application use HTTP/1.x by default. If your application is capable of receiving HTTP/2 requests, you can add the following field to the ingress annotation to enable the use of HTTP/2:
kubernetes.io/elb.http2-enable: 'true'
- An HTTPS-compliant load balancer supports HTTP/2.
- This function is available in clusters of version v1.23.13-r0, v1.25.8-r0, v1.27.5-r0, or v1.28.3-r0.
- After HTTP/2 is configured, if you delete the advanced configuration for enabling HTTP/2 on the CCE console or delete the target annotation from the YAML file, the configuration on the ELB will be retained.
apiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: ingress-test annotations: kubernetes.io/elb.id: <your_elb_id> # Replace it with the ID of your existing load balancer. kubernetes.io/elb.ip: <your_elb_ip> # Replace it with the IP of your existing load balancer. kubernetes.io/elb.port: '443' kubernetes.io/elb.http2-enable: 'true' # Enable HTTP/2. spec: tls: - secretName: ingress-test-secret rules: - host: '' http: paths: - path: '/' backend: service: name: <your_service_name> # Replace it with the name of your target Service. port: number: 8080 # Replace 8080 with the port number of your target Service. property: ingress.beta.kubernetes.io/url-match-mode: STARTS_WITH pathType: ImplementationSpecific ingressClassName: cce
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
kubernetes.io/elb.http2-enable |
No |
String |
Whether HTTP/2 is enabled. Request forwarding using HTTP/2 improves the access performance between your application and the load balancer. However, the load balancer still uses HTTP/1.x to forward requests to the backend server. Options:
Note: HTTP/2 can be enabled or disabled only when the listener uses HTTPS. This parameter is invalid and defaults to false when the listener protocol is HTTP. |
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