Help Center/ MapReduce Service/ User Guide (Ankara Region)/ FusionInsight Manager Operation Guide/ Cluster/ Managing a Service/ Other Service Management Operations/ Performing Active/Standby Switchover of a Role Instance
Updated on 2024-11-29 GMT+08:00
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Performing Active/Standby Switchover of a Role Instance

Scenario

Some service roles are deployed in active/standby mode. If the active instance needs to be maintained and cannot provide services, or other maintenance is required, you can manually trigger an active/standby switchover.

Procedure

  1. Log in to FusionInsight Manager.
  2. Choose Cluster > Services.
  3. Click the specified service name on the service management page.
  4. On the service details page, expand the More drop-down list and select Perform Role Instance Switchover.
  5. In the displayed dialog box, enter the password of the current login user and click OK.
  6. In the displayed dialog box, click OK to perform active/standby switchover for the role instance.

    • The Manager component package only supports the active/standby switchover of DBService role instances.
    • The HD component package supports active/standby switchover of the following service role instances: HDFS, Yarn, HBase, and MapReduce.
    • When an active/standby switchover is performed for a NameNode on HDFS, a NameService must be set.
    • The Porter component package only supports the active/standby switchover of Loader role instances.
    • The RTD component package supports active/standby switchover of RTDService and MOTService role instances.
    • This function cannot be used for other role instances.