Need help to increase minReplica value

[Mohit Bansal]

Does anyone know how to increase the minReplicas value in running the inferences service without any downtime?
Because in Knative serving we are using KPA for autoscaling and I didn’t find any command to modify this value without the down time of application.

Please provide some input on this

Thanks In advance 

[Evan Anderson]

You should be able to increase or decrease the minReplicas annotation on a Knative Service without Service interruption. This may cause rollout of a new Revision (which allows you to roll back the change), but rollout of a new Revision if needed should be hitless.

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Subject: Need help to increase minReplica value

 

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[Mohit Bansal]

can you tell us a command to change annotations? Is there any way to trigger to change the min-scale value?

and how to rollout new revision without stoping service 

[Pierangelo Di Pilato]

Hi,

You can add an annotation on the service

autoscaling.knative.dev/min-scale: <x>

https://knative.dev/docs/serving/autoscaling/scale-bounds/#lower-bound

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Pierangelo Di Pilato
Senior Software Engineer
Red Hat, Inc
https://www.redhat.com/

[Roland Huß]

You can also use the kn CLI for updating the min scale value:

kn service update --min-scale=1 myservice

This will create a new revision, but the update will be seamless.

... roland

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