Merge pull request #30657 from SataQiu/fix-kubeadm-20211128
kubeadm: add instructions about rebalancing CoreDNS Pods after joining more nodespull/30705/head^2
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@ -383,6 +383,12 @@ Run 'kubectl get nodes' on control-plane to see this machine join.
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A few seconds later, you should notice this node in the output from `kubectl get
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nodes` when run on the control-plane node.
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{{< note >}}
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As the cluster nodes are usually initialized sequentially, the CoreDNS Pods are likely to all run
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on the first control-plane node. To provide higher availability, please rebalance the CoreDNS Pods
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with `kubectl -n kube-system rollout restart deployment coredns` after at least one new node is joined.
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{{< /note >}}
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### (Optional) Controlling your cluster from machines other than the control-plane node
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In order to get a kubectl on some other computer (e.g. laptop) to talk to your
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