Update upgrade guides to clarify that legacy repos are frozen

Signed-off-by: Marko Mudrinić <[email protected]>
kubernetes · Oct 13, 2023 · 7c3d818 · 7c3d818
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diff --git a/content/en/docs/tasks/administer-cluster/kubeadm/change-package-repository.md b/content/en/docs/tasks/administer-cluster/kubeadm/change-package-repository.md
@@ -19,6 +19,15 @@ package repositories (`pkgs.k8s.io`). If that's not the case, it's strongly
 recommended to migrate to the community-owned package repositories as described
 in the [official announcement](/blog/2023/08/15/pkgs-k8s-io-introduction/).
 
+{{< note >}}
+The legacy package repositories (`apt.kubernetes.io` and `yum.kubernetes.io`)
+have been frozen starting from September 13, 2023. To install Kubernetes versions
+released **after** September 13, 2013, you need to migrate to the community-owned
+package repositories. Please read our
+[deprecation and freezing announcement](/blog/2023/08/31/legacy-package-repository-deprecation/)
+for more details.
+{{< /note >}}
+
 ### Verifying if the Kubernetes package repositories are used
 
 If you're unsure whether you're using the community-owned package repositories or the

diff --git a/content/en/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade.md b/content/en/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade.md
@@ -59,6 +59,15 @@ enable the package repository for the desired Kubernetes minor release. This is
 [Changing the Kubernetes package repository](/docs/tasks/administer-cluster/kubeadm/change-package-repository/)
 document.
 
+{{< note >}}
+The legacy package repositories (`apt.kubernetes.io` and `yum.kubernetes.io`)
+have been frozen starting from September 13, 2023. To install Kubernetes versions
+released **after** September 13, 2013, you need to migrate to the community-owned
+package repositories. Please read our
+[deprecation and freezing announcement](/blog/2023/08/31/legacy-package-repository-deprecation/)
+for more details.
+{{< /note >}}
+
 ## Determine which version to upgrade to
 
 Find the latest patch release for Kubernetes {{< skew currentVersion >}} using the OS package manager:

diff --git a/content/en/docs/tasks/administer-cluster/kubeadm/upgrading-linux-nodes.md b/content/en/docs/tasks/administer-cluster/kubeadm/upgrading-linux-nodes.md
@@ -24,6 +24,15 @@ enable the package repository for the desired Kubernetes minor release. This is
 [Changing the Kubernetes package repository](/docs/tasks/administer-cluster/kubeadm/change-package-repository/)
 document.
 
+{{< note >}}
+The legacy package repositories (`apt.kubernetes.io` and `yum.kubernetes.io`)
+have been frozen starting from September 13, 2023. To install Kubernetes versions
+released **after** September 13, 2013, you need to migrate to the community-owned
+package repositories. Please read our
+[deprecation and freezing announcement](/blog/2023/08/31/legacy-package-repository-deprecation/)
+for more details.
+{{< /note >}}
+
 ## Upgrading worker nodes
 
 ### Upgrade kubeadm