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kubeadm: remove the EtcdLearnerMode FG #49410

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Jan 15, 2025
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kubeadm: remove the EtcdLearnerMode FG #49410

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kubeadm: remove the EtcdLearnerMode FG
neolit123 Jan 13, 2025
6c1e510
Update content/en/docs/reference/setup-tools/kubeadm/kubeadm-init.md
neolit123 Jan 13, 2025
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10 changes: 5 additions & 5 deletions content/en/docs/reference/setup-tools/kubeadm/kubeadm-init.md
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Original file line number Diff line number Diff line change
Expand Up @@ -156,7 +156,6 @@ List of feature gates:
Feature | Default | Alpha | Beta | GA
:-------|:--------|:------|:-----|:----
`ControlPlaneKubeletLocalMode` | `false` | 1.31 | - | -
`EtcdLearnerMode` | `true` | 1.27 | 1.29 | 1.32
`NodeLocalCRISocket` | `false` | 1.32 | - | -
`WaitForAllControlPlaneComponents` | `false` | 1.30 | - | -
{{< /table >}}
Expand All @@ -172,10 +171,6 @@ Feature gate descriptions:
to connect to the local kube-apiserver. This ensures that there will not be a violation of the version skew
policy during rolling upgrades.

`EtcdLearnerMode`
: With this feature gate enabled, when joining a new control plane node, a new etcd member will be created
as a learner and promoted to a voting member only after the etcd data are fully aligned.

`NodeLocalCRISocket`
: With this feature gate enabled, kubeadm will read/write the CRI socket for each node from/to the file
`/var/lib/kubelet/instance-config.yaml` instead of reading/writing it from/to the annotation
Expand Down Expand Up @@ -230,13 +225,18 @@ List of removed feature gates:
{{< table caption="kubeadm removed feature gates" >}}
Feature | Alpha | Beta | GA | Removed
:-------|:------|:-----|:---|:-------
`EtcdLearnerMode` | 1.27 | 1.29 | 1.32 | 1.33
`IPv6DualStack` | 1.16 | 1.21 | 1.23 | 1.24
`UnversionedKubeletConfigMap` | 1.22 | 1.23 | 1.25 | 1.26
`UpgradeAddonsBeforeControlPlane` | 1.28 | - | - | 1.31
{{< /table >}}

Feature gate descriptions:

`EtcdLearnerMode`
: When joining a new control plane node, a new etcd member will be created
as a learner and promoted to a voting member only after the etcd data are fully aligned.

`IPv6DualStack`
: This flag helps to configure components dual stack when the feature is in progress. For more details on Kubernetes
dual-stack support see [Dual-stack support with kubeadm](/docs/setup/production-environment/tools/kubeadm/dual-stack-support/).
Expand Down