how activate it via http access, e.g. by accessing the fully qualified domain name of k8s?

[RonaldFletcher]

Proposal

When replicaset is 0, I can access the k8 fully-qualified domain via http, and its de-activation job makes its replicaset 0 to 1

Use-Case

No response

Is this a feature you are interested in implementing yourself?

No

Anything else?

No response

[JorTurFer]

Hey! Are you asking about HTTP based autoscaling? If yes, I'd suggest checking this the HTTP Add-on: https://github.com/kedacore/http-add-on

[RonaldFletcher]

@JorTurFer I have a question, if I go to access the service directly through the FQDN of k8's service, http-add-on doesn't seem to take effect, the service can't be activated

[JorTurFer]

It depends on how you do it, if you want to call the FQDN directly using the add-on, you should configure the add-on to proxy that host (in hosts section) and call the the FQDN of the add-on with the Host header of your service FQDN. It's not something 100% direct, but it's something easily doable.

If you are looking for something 100% transparent using the FQDN of k8s server, KEDA can't help you because it's not a service mesh who can enforces the traffic.

[JorTurFer]

For example, this e2e test covers that scenario: command: ["curl", "-H", "Host: {{.Host}}", "keda-http-add-on-interceptor-proxy.keda:8080"]

Basically, it calls directly to interceptor service but setting the host header with the value of the workload's k8s service FQDN behind it