Hadoop Yarn NodeManager¶

Collect Yarn NodeManager Metrics.

Installation and Configuration¶

Since NodeManager is developed in Java, metrics can be collected using the jmx-exporter method.

1. NodeManager Configuration¶

1.1 Download jmx-exporter¶

Download link: https://github.com/prometheus/jmx_exporter

1.2 Download jmx Script¶

Download link: https://github.com/lrwh/jmx-exporter/blob/main/hadoop-yarn-nodemanager.yml

1.3 Adjust NodeManager Startup Parameters¶

Add the following to the nodemanager startup parameters:

{JAVA_GC_ARGS} -javaagent:/opt/jmx/jmx_exporter-1.0.1.jar=localhost:17108:/opt/jmx/jmx_node_manager.yml

1.4 Restart NodeManager¶

2. DataKit Collector Configuration¶

2.1 Install DataKit¶

2.2 Configure the Collector¶

Since jmx-exporter directly exposes the metrics URL, you can collect data using the prom collector.

Navigate to the conf.d/prom directory under the DataKit installation directory, and copy prom.conf.sample to nodemanager.conf.

cp prom.conf.sample nodemanager.conf

Adjust the content of nodemanager.conf as follows:

  urls = ["http://localhost:17108/metrics"]
  source ="yarn-nodemanager"
  [inputs.prom.tags]
    component = "yarn-nodemanager" 
  interval = "10s"

Adjust other configurations as needed

, parameter adjustment instructions:

• urls: The jmx-exporter metrics URL, fill in the metrics URL exposed by the corresponding component here
• source: Collector alias, recommended for differentiation
• keep_exist_metric_name: Keep the metric name
• interval: Collection interval
• inputs.prom.tags: Add additional tags

3. Restart DataKit¶

Restart DataKit

Metrics¶

Hadoop Measurement¶

NodeManager metrics are located under the Hadoop Measurement, here we mainly introduce NodeManager related metrics.