Help Center > > User Guide> Managing an Existing Cluster> Component Management> Configuring Role Instance Parameters

Configuring Role Instance Parameters

Updated at: Aug 17, 2021 GMT+08:00


You can view and modify default role instance configuration on MRS based on site requirements. The configurations can be imported and exported.

Impact on the System

You need to download and update the client configuration files after configuring HBase, HDFS, Hive, Spark, Yarn, and MapReduce service properties.


You have synchronized IAM users (on the Dashboard tab page, click Click to synchronize on the right side of IAM User Sync to synchronize IAM users).

Figure 1 Synchronizing IAM users (using MRS 1.9.2 as an example)

Modifying Role Instance Parameters

  1. On the MRS cluster details page, click Components.
    Figure 2 Component management (using MRS 1.9.2 as an example)
  2. Select the target service from the service list.
  3. Click the Instances tab.
  4. Click the target role instance from the role instance list.
  5. Click the Instance Configuration tab.
  6. Switch Basic to All from the drop-down list on the right of the page. All configuration parameters of the role instance are displayed in the navigation tree.
  7. In the navigation tree, select a specified parameter and change its value. You can also enter the parameter name in the Search box to search for the parameter and view the result.

    If you want to cancel the modification of a parameter value, click to restore it.

  8. Click Save Configuration, select Restart the affected services or instances, and click OK.

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