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openshift-docs/modules/virt-single-node-cluster.adoc
2021-12-16 16:48:52 +00:00

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// Module included in the following assemblies:
//
// * virt/install/preparing-cluster-for-virt.adoc
[id="virt-single-node-cluster_{context}"]
= Changes in {VirtProductName} behavior on a single node cluster
You can use {VirtProductName} with single node clusters, also known as Single Node OpenShift (SNO). These clusters are not configured for high-availability operation, which results in significant changes to {VirtProductName} behavior.
* {VirtProductName} components have only one replica, and pod disruption budgets do not apply.
* Live migration is not supported.
* Due to differences in storage behavior, some virtual machine templates are incompatible with SNO. To ensure compatibility, do not set the `evictionStrategy` field for any templates or virtual machines that use data volumes or storage profiles.