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Merge pull request #4067 from dharmab/scale-up-q 

Document that TLS bootstrapping may be necessary for scale-up
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Kubernetes Prow Robot 2021-05-10 06:10:51 -07:00 committed by GitHub
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cluster-autoscaler/FAQ.md
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@ -466,8 +466,9 @@ If there are multiple node groups that, if increased, would help with getting so
different strategies can be selected for choosing which node group is increased. Check [What are Expanders?](#what-are-expanders) section to learn more about strategies. different strategies can be selected for choosing which node group is increased. Check [What are Expanders?](#what-are-expanders) section to learn more about strategies.
It may take some time before the created nodes appear in Kubernetes. It almost entirely It may take some time before the created nodes appear in Kubernetes. It almost entirely
depends on the cloud provider and the speed of node provisioning. Cluster depends on the cloud provider and the speed of node provisioning, including the
Autoscaler expects requested nodes to appear within 15 minutes [TLS bootstrapping process](https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet-tls-bootstrapping/).
Cluster Autoscaler expects requested nodes to appear within 15 minutes
(configured by `--max-node-provision-time` flag.) After this time, if they are (configured by `--max-node-provision-time` flag.) After this time, if they are
still unregistered, it stops considering them in simulations and may attempt to scale up a still unregistered, it stops considering them in simulations and may attempt to scale up a
different group if the pods are still pending. It will also attempt to remove different group if the pods are still pending. It will also attempt to remove