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Configuration Change

Last updated: 2022-08-12 14:59:18

    Feature overview

    In actual use, you may find that the configurations of the nodes in your cluster need to be upgraded, especially when the CPU or memory resources of the master nodes are insufficient. This document describes how to change the instance configuration in the EMR console.

    Prerequisites

    1. The instance will be shut down during the change. Note that the shutdown may affect the normal use of the cluster and even interrupt your business.
    2. If the configuration of pay-as-you-go nodes is changed, the billing will start over again from the first tier.
    3. The configurations of local-disk models cannot be changed.
    4. The size of data disks and system disks cannot be changed.
    5. The target configurations must be higher than or equal to the current configurations.

    Directions

    1. Log in to the EMR console and click the ID/Name of the target cluster in the Cluster list to enter the cluster details page.
    2. Select Cluster Resource on the cluster details page to enter the Resource Management page. Select the target instance based on your business needs and node type and click Operation > Change Configuration.
    3. On the configuration adjustment page, confirm the relevant information, read carefully the notes, and select I have read and understood the notes and agree to the operation.


    4. On the Select Target Configuration tab, select the model, instance type, model list, and other configuration items. After confirming the cost, click Start Adjustment.
    5. (Optional) To adjust the resources of the component after configuration adjustment, you need to deliver the configuration again in Configuration Management and restart the service.
      Note:

      • The YARN resources will be automatically adjusted according to the model and specification by default. After configuration adjustment, the size of the resources will change as the specification changes and does not need to be adjusted manually.
      • If you have manually adjusted the configuration of YARN resources, then after configuration adjustment, you need to modify the parameter values of the yarn.nodemanager.resource.cpu-vcores and yarn.nodemanager.resource.memory-mb configuration items in Configuration Management, click Save configuration to deliver the configuration, and restart the NodeManager service for the configuration of YARN resources to be updated.
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