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Promote Pod Topology Spread to Beta (#18969)

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* Promote PodTopologySpread (a.k.a EvenPodsSpread) to beta in 1.18

* address comments
This commit is contained in:
Wei Huang
2020-03-16 07:54:43 -07:00
committed by GitHub
parent 94fbc12a6b
commit 47d495e7aa
2 changed files with 7 additions and 7 deletions
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content/en/docs/concepts/workloads/pods/pod-topology-spread-constraints.md
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@@ -6,7 +6,7 @@ weight: 50
{{% capture overview %}} {{% capture overview %}}
{{< feature-state for_k8s_version="v1.16" state="alpha" >}} {{< feature-state for_k8s_version="v1.18" state="beta" >}}
You can use _topology spread constraints_ to control how {{< glossary_tooltip text="Pods" term_id="Pod" >}} are spread across your cluster among failure-domains such as regions, zones, nodes, and other user-defined topology domains. This can help to achieve high availability as well as efficient resource utilization. You can use _topology spread constraints_ to control how {{< glossary_tooltip text="Pods" term_id="Pod" >}} are spread across your cluster among failure-domains such as regions, zones, nodes, and other user-defined topology domains. This can help to achieve high availability as well as efficient resource utilization.
@@ -18,9 +18,8 @@ You can use _topology spread constraints_ to control how {{< glossary_tooltip te
### Enable Feature Gate ### Enable Feature Gate
Ensure the `EvenPodsSpread` feature gate is enabled (it is disabled by default The `EvenPodsSpread` [feature gate] (/docs/reference/command-line-tools-reference/feature-gates/)
in 1.16). See [Feature Gates](/docs/reference/command-line-tools-reference/feature-gates/) must be enabled for the
for an explanation of enabling feature gates. The `EvenPodsSpread` feature gate must be enabled for the
{{< glossary_tooltip text="API Server" term_id="kube-apiserver" >}} **and** {{< glossary_tooltip text="API Server" term_id="kube-apiserver" >}} **and**
{{< glossary_tooltip text="scheduler" term_id="kube-scheduler" >}}. {{< glossary_tooltip text="scheduler" term_id="kube-scheduler" >}}.
@@ -201,9 +200,9 @@ See [Motivation](https://github.com/kubernetes/enhancements/blob/master/keps/sig
## Known Limitations ## Known Limitations
As of 1.16, at which this feature is Alpha, there are some known limitations: As of 1.18, at which this feature is Beta, there are some known limitations:
- Scaling down a `Deployment` may result in imbalanced Pods distribution. - Scaling down a Deployment may result in imbalanced Pods distribution.
- Pods matched on tainted nodes are respected. See [Issue 80921](https://github.com/kubernetes/kubernetes/issues/80921) - Pods matched on tainted nodes are respected. See [Issue 80921](https://github.com/kubernetes/kubernetes/issues/80921)
{{% /capture %}} {{% /capture %}}
content/en/docs/reference/command-line-tools-reference/feature-gates.md
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@@ -97,7 +97,8 @@ different Kubernetes components.
| `ExpandPersistentVolumes` | `false` | Alpha | 1.8 | 1.10 | | `ExpandPersistentVolumes` | `false` | Alpha | 1.8 | 1.10 |
| `ExpandPersistentVolumes` | `true` | Beta | 1.11 | | | `ExpandPersistentVolumes` | `true` | Beta | 1.11 | |
| `ExperimentalHostUserNamespaceDefaulting` | `false` | Beta | 1.5 | | | `ExperimentalHostUserNamespaceDefaulting` | `false` | Beta | 1.5 | |
| `EvenPodsSpread` | `false` | Alpha | 1.16 | | | `EvenPodsSpread` | `false` | Alpha | 1.16 | 1.17 |
| `EvenPodsSpread` | `true` | Beta | 1.18 | |
| `HPAScaleToZero` | `false` | Alpha | 1.16 | | | `HPAScaleToZero` | `false` | Alpha | 1.16 | |
| `HugePageStorageMediumSize` | `false` | Alpha | 1.18 | | | `HugePageStorageMediumSize` | `false` | Alpha | 1.18 | |
| `HyperVContainer` | `false` | Alpha | 1.10 | | | `HyperVContainer` | `false` | Alpha | 1.10 | |