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Merge pull request #29739 from jtslear/jts/recommend-hpa-config

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Add recommendation for Deployment when HPA is enabled
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Kubernetes Prow Robot
2021-12-05 14:56:32 -08:00
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parent 097bf85ed8 df3184bd52
commit bbeb5184a7
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content/en/docs/concepts/workloads/controllers/deployment.md
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@@ -1065,6 +1065,18 @@ allowed, which is the default if not specified.
`.spec.replicas` is an optional field that specifies the number of desired Pods. It defaults to 1.
Should you manually scale a Deployment, example via `kubectl scale deployment
deployment --replicas=X`, and then you update that Deployment based on a manifest
(for example: by running `kubectl apply -f deployment.yaml`),
then applying that manifest overwrites the manual scaling that you previously did.
If a [HorizontalPodAutoscaler](/docs/tasks/run-application/horizontal-pod-autoscale/) (or any
similar API for horizontal scaling) is managing scaling for a Deployment, don't set `.spec.replicas`.
Instead, allow the Kubernetes
{{< glossary_tooltip text="control plane" term_id="control-plane" >}} to manage the
`.spec.replicas` field automatically.
### Selector
`.spec.selector` is a required field that specifies a [label selector](/docs/concepts/overview/working-with-objects/labels/)