Is Scale to Zero included in the Community Edition of OpenFaaS? about faasd

[nitishkumar71]

Aah, my bad I mistook it for scaling across nodes. I will dig into it.

[rgee0]

I've reproduced this. It was working in 16.5 (the version I already had available on a microvm) it isn't working with faasd version: 0.18.2 commit: 078043b168d8e18fa2671de9cc1f9aca27d4e9baa

To isolate the problem I would ignore faas-idler for the time being - this would generate the request to the endpoint in the same way you are doing manually.

The gateway returns a 200:

Jan 07 09:32:55 faasd openfaas:gateway[6351]: 2024/01/07 09:32:55 Forwarded [GET] to /system/functions - [200] - 0.0349s
Jan 07 09:33:13 faasd openfaas:gateway[6351]: 2024/01/07 09:33:13 Forwarded [POST] to /system/scale-function/nodeinfo - [200] - 0.0173s
Jan 07 09:33:15 faasd openfaas:gateway[6351]: 2024/01/07 09:33:15 Forwarded [GET] to /system/functions - [200] - 0.0529s
Jan 07 09:36:02 faasd openfaas:gateway[6351]: 2024/01/07 09:36:02 Forwarded [POST] to /system/scale-function/nodeinfo - [200] - 0.0204s

System services deployed:

CONTAINER       IMAGE                                      RUNTIME                  
gateway         ghcr.io/openfaas/gateway:0.27.2            io.containerd.runc.v2    
nats            docker.io/library/nats-streaming:0.25.5    io.containerd.runc.v2    
prometheus      docker.io/prom/prometheus:v2.47.0          io.containerd.runc.v2    
queue-worker    ghcr.io/openfaas/queue-worker:0.14.0       io.containerd.runc.v2 

[jaydenrasmussen]

After some further research I came across the following article which makes mention of adding faas-idler to the faasd docker-compose yaml to enable this behavior. Is it expected for users to do this to enable scale to zero? Both the blog post and the official documentation make it seem like this is out of the box functionality.

[nitishkumar71]

Yes, you are correct. fasad is never supposed to support scaling functionality.

You can use openfass pro or community edition for further use case.

[jaydenrasmussen]

If that's the case then why does the /system/scale-function endpoint exist?

[nitishkumar71]

I have been trying to debug it in my local. Yes it's not working as expected.
Although, we are sending replicas as 0 in request body as shown in below curl request
curl -v -X POST http://$FAASD_USER:$FAASD_PASS@$FAASD_GATEWAY:8080/system/scale-function/env-store-test \ -d '{"serviceName":"env-store-test", "replicas": 0}'

But in faasd logs received request have replica is 1 as shown below
Feb 18 20:00:39 faasd-test faasd[7170]: 2024/02/18 20:00:39 [Scale] request: {"serviceName":"env-store-test","replicas":1}

[alexellis]

Hi, scale to zero isn't supported for the Community Edition of OpenFaaS, a commercial license is required for OpenFaaS Standard, which for faasd, we offer at a significant discount per installation vs. the Kubernetes pricing.

faas-idler is a commercial feature of OpenFaaS Standard.

Feel free to reach out.

Alex

[alexellis]

/set title: Is Scale to Zero included in the Community Edition of OpenFaaS?