If a host is found to be abnormal or faulty, affecting cluster performance or preventing services from being provided, users can temporarily exclude that host from the available nodes in the cluster. In this way, the client can access other available nodes. In scenarios where patches are to be installed in a cluster, users can also exclude a specified node from patch installation.
Users can isolate a host manually on MRS Manager based on the actual service requirements or O&M plan. Only non-management nodes can be isolated.
When Operation succeeded is displayed, click Finish. The host is isolated successfully, and the value of Operating Status becomes Isolated.
The isolation of a host can be canceled and the host can be added to the cluster again. For details, see Canceling Isolation of a Host.