Clarify minor version skew (#5819)

docs/setup/independent/create-cluster-kubeadm.md

@@ -515,6 +515,9 @@ Due to that we can't see into the future, kubeadm CLI vX.Y may or may not be abl
 Example: kubeadm v1.8 can deploy both v1.7 and v1.8 clusters and upgrade v1.7 kubeadm-created clusters to
 v1.8.
 
+Please also check our [installation guide](/docs/setup/independent/install-kubeadm/#installing-kubeadm-kubelet-and-kubectl)
+for more information on the version skew between kubelets and the control plane.
+
 ## kubeadm is multi-platform {#multi-platform}
 
 kubeadm deb/rpm packages and binaries are built for amd64, arm (32-bit), arm64, ppc64le, and s390x

docs/setup/independent/install-kubeadm.md

@@ -140,7 +140,12 @@ You will install these packages on all of your machines:
 kubeadm **will not** install or manage `kubelet` or `kubectl` for you, so you will 
 need to ensure they match the version of the Kubernetes control panel you want 
 kubeadm to install for you. If you do not, there is a risk of a version skew occurring that
-can lead to unexpected, buggy behaviour.
+can lead to unexpected, buggy behaviour. However, _one_ minor version skew between the 
+kubelet and the control plane is supported, but the kubelet version may never exceed the API
+server version. For example, kubelets running 1.7.0 should be fully compatible with a 1.8.0 API server. 
+
+For more information on version skews, please read our 
+[version skew policy](/docs/setup/independent/create-cluster-kubeadm/#version-skew-policy).
 
 Please proceed with executing the following commands based on your OS as `root`.
 You may become the `root` user by executing `sudo -i` after SSH-ing to each host.