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Add documentation for LogarithmicScaleDown featuregate

This commit is contained in:
Mike Dame 2021-03-25 13:17:12 -04:00
parent d53aef4047
commit 9ad6f7a17f
2 changed files with 5 additions and 1 deletions
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3
content/en/docs/concepts/workloads/controllers/replicaset.md
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@ -317,7 +317,8 @@ prioritize scaling down pods based on the following general algorithm:
the pod with the lower value will come first. the pod with the lower value will come first.
3. Pods on nodes with more replicas come before pods on nodes with fewer replicas. 3. Pods on nodes with more replicas come before pods on nodes with fewer replicas.
4. If the pods' creation times differ, the pod that was created more recently 4. If the pods' creation times differ, the pod that was created more recently
comes before the older pod (the creation times are bucketed on an integer log scale) comes before the older pod (the creation times are bucketed on an integer log scale
when the `LogarithmicScaleDown` [feature gate](/docs/reference/command-line-tools-reference/feature-gates/) is enabled)
If all of the above match, then selection is random. If all of the above match, then selection is random.

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content/en/docs/reference/command-line-tools-reference/feature-gates.md
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@ -135,6 +135,7 @@ different Kubernetes components.
| `LocalStorageCapacityIsolation` | `false` | Alpha | 1.7 | 1.9 | | `LocalStorageCapacityIsolation` | `false` | Alpha | 1.7 | 1.9 |
| `LocalStorageCapacityIsolation` | `true` | Beta | 1.10 | | | `LocalStorageCapacityIsolation` | `true` | Beta | 1.10 | |
| `LocalStorageCapacityIsolationFSQuotaMonitoring` | `false` | Alpha | 1.15 | | | `LocalStorageCapacityIsolationFSQuotaMonitoring` | `false` | Alpha | 1.15 | |
| `LogarithmicScaleDown` | `false` | Alpha | 1.21 | |
| `MixedProtocolLBService` | `false` | Alpha | 1.20 | | | `MixedProtocolLBService` | `false` | Alpha | 1.20 | |
| `NamespaceDefaultLabelName` | `true` | Beta | 1.21 | | | `NamespaceDefaultLabelName` | `true` | Beta | 1.21 | |
| `NetworkPolicyEndPort` | `false` | Alpha | 1.21 | | | `NetworkPolicyEndPort` | `false` | Alpha | 1.21 | |
@ -670,6 +671,8 @@ Each feature gate is designed for enabling/disabling a specific feature:
supports project quotas and they are enabled, use project quotas to monitor supports project quotas and they are enabled, use project quotas to monitor
[emptyDir volume](/docs/concepts/storage/volumes/#emptydir) storage consumption rather than [emptyDir volume](/docs/concepts/storage/volumes/#emptydir) storage consumption rather than
filesystem walk for better performance and accuracy. filesystem walk for better performance and accuracy.
- `LogarithmicScaleDown`: Enable semi-random selection of pods to evict on controller scaledown
based on logarithmic bucketing of pod timestamps.
- `MixedProtocolLBService`: Enable using different protocols in the same `LoadBalancer` type - `MixedProtocolLBService`: Enable using different protocols in the same `LoadBalancer` type
Service instance. Service instance.
- `MountContainers` (*deprecated*): Enable using utility containers on host as - `MountContainers` (*deprecated*): Enable using utility containers on host as