Apache Hadoop integration

Install the infrastructure agent

To use the Apache Hadoop integration, you need to first install the infrastructure agent on the same host. The infrastructure agent monitors the host itself, while the integration you'll install in the next step extends your monitoring with Hadoop-specific data.

Configure NRI-Flex for Apache Hadoop

Our flex integration comes bundled with the New Relic infrastructure agent and is used to send your Apache Hadoop data to New Relic. To create a flex configuration file follow these steps:

1. Create a file named nri-flex-hadoop-config.yml in the /etc/newrelic-infra/integrations.d path.

2. Use our configuration template to update the fields EVENT_TYPE and YOUR_DOMAIN in the created file named nri-flex-hadoop-config.yml. The value on the event_type is used to store metrics on the NRDB.

   Example:

   • EVENT_TYPE1 can be updated to HadoopResourceManagerSample
   • EVENT_TYPE2 can be updated to HadoopNameNodeSample

   Your nri-flex-hadoop-config.yml file should look like this:

   integrations:
     - name: nri-flex
       # interval: 30s
       config:
         name: hadoopMetrics
         apis:
           - event_type: EVENT_TYPE1
             commands: 
               # run any command, you could cat .json file, or run some commands that produce a json output
             # the example just calls an API that returns json
               - run: curl -s https://YOUR_DOMAIN:9870/jmx #json output is retrieved from this command
           - event_type: EVENT_TYPE2
             commands: 
               - run: curl -s https://YOUR_DOMAIN:8088/jmx?qry=Hadoop:*

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Forward Apache Hadoop logs to New Relic

You can use our log forwarding to forward Apache Hadoop logs to New Relic.

1. Create a log file named logging.yml in /etc/newrelic-infra/logging.d/

2. After creating the log file, add the following script to the logging.yml file:

   logs:
     - name: hadoop_secondarynamenode_log
       file: /usr/local/hadoop/logs/hadoop-hadoopuser-secondarynamenode-hadoop-master.log
       attributes:
         logtype: hadoop_secondarynamenode_logs
     - name: hadoop_resourcemanager_log
       file: /usr/local/hadoop/logs/hadoop-hadoopuser-resourcemanager-hadoop-master.log
       attributes:
         logtype: hadoop_hadoop_resourcemanager_logs
     - name: hadoop_namenode_log
       file: /usr/local/hadoop/logs/hadoop-hadoopuser-namenode-hadoop-master.log
       attributes:
         logtype: hadoop_namenode_logs

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Restart the New Relic infrastructure agent

Before you can start using your data, restart your infrastructure agent.

The following command should work for most systems:

$
sudo systemctl restart newrelic-infra.service
$
```

Find your data

You can choose our pre-built dashboard template named Apache Hadoop to monitor your Apache Hadoop server metrics. Follow these steps to use our pre-built dashboard template:

1. From one.newrelic.com, go to the + Add data page.
2. Click on Dashboards.
3. In the search bar, type apache hadoop.
4. The Apache Hadoop dashboard should appear. Click on it to install it.

Your Apache Hadoop dashboard is considered a custom dashboard and can be found in the Dashboards UI. For docs on using and editing dashboards, see our dashboard docs.

Here is a NRQL query to check the active users from the resource manager:

SELECT latest(activeUsers) 
FROM HadoopResourceManagerSample

Here is a NRQL query to view the number of active clients from the name node:

SELECT latest(numActiveClients) 
FROM HadoopNameNodeSample