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MRS-operation-guide-lts/umn/source/overview/functions/cluster_management/isolating_a_host.rst
proposalbot ac0532e380 Changes to mrs_umn from docs/doc-exports#462 (MRS UMN 2.0.38.SP20 version 
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Isolating a Host

When detecting that a host is abnormal or faulty and cannot provide services or affects cluster performance, you can exclude the host from the available nodes in the cluster temporarily so that the client can access other available nodes. In scenarios where patches are to be installed in a cluster, you can also exclude a specified node from patch installation. Only non-management nodes can be isolated.

After a host is isolated, all role instances on the host will be stopped, and you cannot start, stop, or configure the host and all instances on the host. In addition, after a host is isolated, statistics about the monitoring status and metric data of hardware and instances on the host cannot be collected or displayed.