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Home Operation and Maintenance CentOS What files do you need to modify in HDFS configuration CentOS?

What files do you need to modify in HDFS configuration CentOS?

Apr 14, 2025 pm 07:27 PM
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When configuring Hadoop Distributed File System (HDFS) on CentOS, the following key configuration files need to be modified:

  1. core-site.xml :

    • fs.defaultFS: Specifies the default file system address of HDFS, such as hdfs://localhost:9000.
    • hadoop.tmp.dir: Specifies the storage directory for Hadoop temporary files.
    • hadoop.proxyuser.root.hosts and hadoop.proxyuser.root.groups: Configure the proxy user of the root user.
  2. hdfs-site.xml :

    • dfs.http.address: Specifies the HTTP address of NameNode.
    • dfs.namenode.secondary.http-address: Specifies the HTTP address of the Secondary NameNode.
    • mapreduce.jobhistory.address and mapreduce.jobhistory.webapp.address: Specify the address and web interface address of the MapReduce job history.
  3. mapred-site.xml :

    • mapreduce.framework.name: Specifies the name of the MapReduce framework, usually yarn.
  4. yarn-site.xml :

    • yarn.resourcemanager.address: Specify the address of the ResourceManager.
    • yarn.resourcemanager.scheduler.address: Specifies the scheduler address of the ResourceManager.
    • yarn.resourcemanager.resource-tracker.address: Specifies the resource tracker address of the ResourceManager.
    • yarn.nodemanager.aux-services and yarn.nodemanager.aux-services.mapreduce_shuffle.class: Specify the auxiliary service of NodeManager.
    • yarn.nodemanager.vmem-check-enabled and yarn.nodemanager.disk-health-checker.max-disk-utilization-per-disk-percentage: Configure memory and disk checks for NodeManager.

After modifying these configuration files, the following steps are usually required:

  • Format NameNode: hdfs namenode -format
  • Start HDFS service: ./sbin/start-dfs.sh
  • Stop HDFS service: ./sbin/stop-dfs.sh

Please note that the specific configuration steps and file paths may vary depending on the Hadoop version and specific requirements. It is recommended to refer to the official documentation or related tutorials to ensure the correctness of the configuration.

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