HDFS Namenode

The NameNode is the centerpiece of an HDFS file system. It keeps the directory tree of all files in the file system, and tracks where across the cluster the file data is kept. It does not store the data of these files itself.

Prerequisite

For Virtual Machines, install the Linux Agent.

Configuring the credentials

Configure the credentials in the directory /opt/opsramp/agent/conf/app.d/creds.yaml

hdfs-namenode:
- name: hdfs-namenode
  user: <username>
  pwd: <Password>
  encoding-type: plain
  labels:
    key1: val1
    key2: val2

Configure the application

Virtual machine

Configure the application in the directory /opt/opsramp/agent/conf/app/discovery/auto-detection.yaml

- name: hdfs-namenode
  instance-checks:
    process-check:
      - namenode
    port-check:
      - 50070
      - 9870
    uri-check:
      - "jmx?qry=Hadoop:service=NameNode,name=FSNamesystem*"
      - "jmx?qry=Hadoop:service=NameNode,name=NameNodeInfo"

Docker environment

Configure the application in the directory /opt/opsramp/agent/conf/app/discovery/auto-container-detection.yaml

- name: hdfs-namenode
  container-checks:
    image-check:
      - namenode
    port-check:
      - 50070
      - 9870

Kubernetes environment

Configure the application in config.yaml

- name: hdfs-namenode
  container-checks:
    image-check:
      - namenode
    port-check:
      - 50070
      - 9870

Validate

Go to Resources under the Infrastructure tab to check if your resources are onboarded and the metrics are collected.

Supported metrics