How to set in a Dockerfile an nginx in front of the same container (google cloud run)? I tried making a python server (odoo) handle http/2

Question

Thanks in advance. My question is, how to set in a Dockerfile an nginx in front of a container? I saw other questions [5], and it seems that the only way to allow http/2 on odoo in cloud run is to create an nginx container, as sidecars are not allowed in gcrun. But I also read that with supervisord it can be done. Has anyone been able do that so to handle http/2 and so to increase the cloud run max request quota?

I wanted to to try this: in the entrpoint.sh, write a command to install nginx, and then set its configuration to be used as a proxy to allow http2. But, I ask you here as I'm not sure if it'll work, as I read in [2] that nginx won't work with a python server.

The whole story: I'm deploying an odoo ce on google cloud run + cloud sql. I configured one odoo as a demo with 5 blogposts and when I tried to download it, it says that the request was too large. Then, I imagined this was because of the 32MB of cloud run request quota [1], as the backup size was 52 MB. Then, I saw that the quota for http/2 connections was unlimited, so I activated http/2 button in cloud run. Next, when I accessed the service an error relating "connection failure appeared".

To do so I thought of two ways: one, was upgrading the odoo http server to one that can handle http/2 like Quark. This first way seems impossible to me, because it would force me to rewrite many pieces of odoo, maybe. Then, the second option that I thought of was running in front of the odoo container (that runs a python web server on a Werkzeug), an nginx. I read in the web that nginx could upgrade connections to http/2. But, I also read that cloud run was running its internal load balancer [2]. So, then my question: would it be possible to run in the same odoo container an nginx that exposes this service on cloud run?

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References:

[1] https://cloud.google.com/run/quotas
[2] Cloud Run needs NGINX or not?
[3] https://linuxize.com/post/configure-odoo-with-nginx-as-a-reverse-proxy/
[4] https://github.com/odoo/docker/tree/master/14.0
[5] How to setup nginx in front of node in docker for Cloud Run?

Answer 1

Has anyone been able do that so to handle http/2 and so to increase the cloud run max request quota?

Handling HTTP/2 does not help you increase your maximum requests per container limit on Cloud Run.

HTTP/2 only helps you reuse TCP connections to send concurrent requests over a single connection, but Cloud Run does not really count connections so you are not on the right track here. HTTP/2 won't help you.

Cloud Run today already supports 1000 container instances (with 250 concurrent requests in preview) so that's 250,000 simultaneous requests for your service. If you need more, contact support.

But, I ask you here as I'm not sure if it'll work, as I read in [2] that nginx won't work with a python server.

Sounds incorrect.

If you configure a multi-process container you can run Python behind nginx on Cloud Run. But as you said, Cloud Run does not need nginx.

Overall you don't need HTTP/2 in this scenario.