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Clarify minor version skew (#5819)

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This commit is contained in:
Jamie Hannaford
2017-10-30 18:44:30 +01:00
committed by Steve Perry
parent f7d639235d
commit a7acfa8270
2 changed files with 9 additions and 1 deletions
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docs/setup/independent/create-cluster-kubeadm.md
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@@ -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 Example: kubeadm v1.8 can deploy both v1.7 and v1.8 clusters and upgrade v1.7 kubeadm-created clusters to
v1.8. 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 is multi-platform {#multi-platform}
kubeadm deb/rpm packages and binaries are built for amd64, arm (32-bit), arm64, ppc64le, and s390x kubeadm deb/rpm packages and binaries are built for amd64, arm (32-bit), arm64, ppc64le, and s390x
docs/setup/independent/install-kubeadm.md
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@@ -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 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 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 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`. 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. You may become the `root` user by executing `sudo -i` after SSH-ing to each host.