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commit f4c7174e9db6104e77eaf2cf5d248fbd48e0f8fe Author: Pasquale Congiusti <[email protected]> AuthorDate: Fri Sep 15 10:56:31 2023 +0200 chore(doc): hpa default behavior Closes #3132 --- docs/modules/ROOT/pages/scaling/binding.adoc | 2 ++ docs/modules/ROOT/pages/scaling/integration.adoc | 2 ++ 2 files changed, 4 insertions(+) diff --git a/docs/modules/ROOT/pages/scaling/binding.adoc b/docs/modules/ROOT/pages/scaling/binding.adoc index 4124afeb7..027e28e13 100644 --- a/docs/modules/ROOT/pages/scaling/binding.adoc +++ b/docs/modules/ROOT/pages/scaling/binding.adoc @@ -99,6 +99,8 @@ A Pipe can automatically scale based on its CPU utilization and custom metrics u For example, executing the following command creates an _autoscaler_ for the Pipe, with target CPU utilization set to 80%, and the number of replicas between 2 and 5: +WARNING: the HPA can work when the Pipe replica field needs to be specified. You need to scale the Pipe via `kubectl scale pipe my-pipe --replicas 1` or edit the `.spec.replicas` field of your Pipe to 1. This is due to a link:https://github.com/kubernetes/kubernetes/issues/111781[Kubernetes behavior which does not allow an empty value on the resource to scale]. + [source,console] ---- $ kubectl autoscale klb <kamelet_binding_name> --min=2 --max=5 --cpu-percent=80 diff --git a/docs/modules/ROOT/pages/scaling/integration.adoc b/docs/modules/ROOT/pages/scaling/integration.adoc index a6cab7d89..9a745cd15 100644 --- a/docs/modules/ROOT/pages/scaling/integration.adoc +++ b/docs/modules/ROOT/pages/scaling/integration.adoc @@ -115,6 +115,8 @@ spec: averageValue: 1k ---- +WARNING: the HPA can work when the Integration replica field needs to be specified. You need to scale the Integration via `kubectl scale it my-it --replicas 1` or edit the `.spec.replicas` field of your Integration to 1. This is due to a link:https://github.com/kubernetes/kubernetes/issues/111781[Kubernetes behavior which does not allow an empty value on the resource to scale]. + More information can be found in https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale/[Horizontal Pod Autoscaler] from the Kubernetes documentation. NOTE: HPA can also be used with Knative, by installing the https://knative.dev/docs/install/install-extensions/#install-optional-serving-extensions[HPA autoscaling Serving extension].
