How to check the status of nodes in Hadoop?

1 year ago
Benjamin Taylor
1 minute

To check the status of nodes in the Hadoop cluster, you can use the following command:

  1. Check the overall status of the cluster nodes.
  2. Provide a report for the Hadoop Distributed File System (HDFS) using the dfsadmin command.
  3. This command will display information such as the number of nodes, total capacity, and used capacity of the entire Hadoop cluster.
  4. View the detailed status of each node in the cluster.
  5. List all nodes in the yarn cluster.
  6. This command will display the status of each node in the cluster, including the node ID, node address, node status, number of running containers, and allocated memory information.
  7. View the resource usage of each node in the cluster.
  8. top yarn
  9. This command will display real-time usage of resources on each node in the cluster, including CPU, memory, virtual memory, etc. Pressing Ctrl+C will exit the command.
  10. Check the status of a specific node:
  11. Check the status of a node using yarn.
  12. Replace with the ID of the node you want to view in order to see the detailed status information of that node.

The command needs to be executed on the control node of the Hadoop cluster.

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