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Clarify why cordon all but 4 nodes.

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Douglas Hellinger 2021-10-27 15:58:55 +08:00 committed by GitHub
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content/en/docs/tutorials/stateful-application/zookeeper.md
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@ -894,8 +894,7 @@ Use this command to get the nodes in your cluster.
kubectl get nodes
```
Use [`kubectl cordon`](/docs/reference/generated/kubectl/kubectl-commands/#cordon) to
cordon all but four of the nodes in your cluster.
This tutorial assumes a cluster with at least four nodes. If the cluster has more than four, use [`kubectl cordon`](/docs/reference/generated/kubectl/kubectl-commands/#cordon) to cordon all but four nodes. Constraining to four nodes will ensure Kubernetes encounters affinity and PodDisruptionBudget constraints when scheduling zookeeper Pods in the following maintenance simulation.
```shell
kubectl cordon <node-name>