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Merge pull request #35794 from aojea/aojea_services 

set ServiceIPStaticSubrange to beta
pull/36053/head
Kubernetes Prow Robot 2022-08-18 10:34:23 -07:00 committed by GitHub
parent ba191c2011 40a3c6810b
commit dacf474354
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2 changed files with 6 additions and 5 deletions
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8
content/en/docs/concepts/services-networking/service.md
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@ -1325,15 +1325,15 @@ IP addresses that are no longer used by any Services.
#### IP address ranges for `type: ClusterIP` Services {#service-ip-static-sub-range}
{{< feature-state for_k8s_version="v1.24" state="alpha" >}}
{{< feature-state for_k8s_version="v1.25" state="beta" >}}
However, there is a problem with this `ClusterIP` allocation strategy, because a user
can also [choose their own address for the service](#choosing-your-own-ip-address).
This could result in a conflict if the internal allocator selects the same IP address
for another Service.
If you enable the `ServiceIPStaticSubrange`
[feature gate](/docs/reference/command-line-tools-reference/feature-gates/),
the allocation strategy divides the `ClusterIP` range into two bands, based on
The `ServiceIPStaticSubrange`
[feature gate](/docs/reference/command-line-tools-reference/feature-gates/) is enabled by default in v1.25
and later, using an allocation strategy that divides the `ClusterIP` range into two bands, based on
the size of the configured `service-cluster-ip-range` by using the following formula
`min(max(16, cidrSize / 16), 256)`, described as _never less than 16 or more than 256,
with a graduated step function between them_. Dynamic IP allocations will be preferentially

3
content/en/docs/reference/command-line-tools-reference/feature-gates.md
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@ -176,7 +176,8 @@ different Kubernetes components.
| `ServerSideFieldValidation` | `true` | Beta | 1.25 | |
| `ServiceInternalTrafficPolicy` | `false` | Alpha | 1.21 | 1.21 |
| `ServiceInternalTrafficPolicy` | `true` | Beta | 1.22 | |
| `ServiceIPStaticSubrange` | `false` | Alpha | 1.24 | |
| `ServiceIPStaticSubrange` | `false` | Alpha | 1.24 | 1.24 |
| `ServiceIPStaticSubrange` | `true` | Beta | 1.25 | |
| `SizeMemoryBackedVolumes` | `false` | Alpha | 1.20 | 1.21 |
| `SizeMemoryBackedVolumes` | `true` | Beta | 1.22 | |
| `StatefulSetAutoDeletePVC` | `false` | Alpha | 1.22 | |