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Configuration Management

Last updated: 2022-12-02 11:21:40

    Feature Overview

    Configuration management supports modifying key configuration parameters of commonly used open-source components such as HDFS, YARN, Hive, and Spark. The configuration of services can be modified as needed at the level of cluster, node, or configuration group. This document describes how to configure service parameters in the console.

    Note:

    • For security reasons, when a custom configuration file is deleted in Configuration Management in the console, it will not be deleted from the client.
    • If you need to delete a custom configuration file from the client, you can use a cluster script to batch perform the operation on existing clusters.

    Directions

    Editing a configuration item

    1. Log in to the EMR console, select the target cluster in the Cluster list, and click Cluster Service to enter the cluster service list.
    2. In the cluster service list, select Operation > Configuration Management in the top-right corner of the target service panel.
    3. On the Configuration Management page, select the Level as needed. By default, Cluster level is selected.
      • To configure the parameters of all nodes of the selected service in the cluster, select Cluster level.
      • To configure the parameters of multiple specified nodes of the selected service, create a configuration group and use it as the level.
      • To configure the parameters of a specified node of the selected service, select Node level.
    4. You can search for configuration items by name or filter them by type.
      Note:

      Currently, only HDFS, YARN, Hive, HBase, and Spark support filtering by configuration type.

    5. Select the target configuration file, click Edit Configuration, and perform operations such as adding, editing, and deleting configuration items as needed.
      • Enter the new parameter value for the target parameter. If needed, you can click Recover to recover a parameter to its original value. You can also click Default Value to restore the parameter to the default value recommended by the system.
      • You can delete certain configuration items by clicking Delete > OK.
      • If the file does not have the parameter you want to configure, you can click Add a configuration item to pop up the Add a configuration item window and enter the new parameter name and value.
    6. After confirming that the modification is correct, click Save configuration. After the configuration is delivered successfully, click Restart Service.

    Adding a configuration file

    1. Log in to the EMR console, select the target cluster in the Cluster list, and click Service to enter the cluster service list.
    2. In the cluster service list, select Operation > Configuration Management in the top-right corner of the target service panel.
    3. If the configuration file you want to configure does not exist, you can click Add configuration file on the right to configure a configuration file.
    4. After you click Save configuration, the parameters will be delivered, and the configuration file name will be updated in the configuration file list.
    5. After the custom configuration file is delivered and takes effect, it can be modified and deleted.

    Comparing configurations

    To compare the configuration before and after the modification, click Configuration comparison and select groups and filters for comparison.

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