HTTP2 through Load Balancer - Backend Config?

[Stephen Johnston]

I'm curious what, if any, config needs to be done on backends to maintain the advantages of HTTP2 multiplexing through the load balancer? Do the backends need to be on HTTP2/SSL?

[Faizan (Google Cloud Support)]

Hello Stephen,

As mentioned here:

The load balancer acts as an HTTP/2 to HTTP/1.1 translation layer, which means that the web servers always see and respond to HTTP/1.1 requests, but that requests from the browser can be HTTP/1.0, HTTP/1.1, or HTTP/2. 

You can refer to this blogpost [1] for information on how HTTP/2 support works on GCP.

Faizan

[1] https://cloudplatform.googleblog.com/2015/10/Full-Speed-Ahead-with-HTTP2-on-Google-Cloud-Platform.html