(Platform Spotlight and Dependent Products) Configure Hadoop to Use Pepperdata (Parcel)

This procedure is required:

For Platform Spotlight
If you’re using a dependent Pepperdata product—a product that requires Platform Spotlight to be installed and configured—in a Hadoop cluster:
- Application Spotlight
- Capacity Optimizer
- Query Spotlight
- Streaming Spotlight

If the only Pepperdata product that you’re installing is Streaming Spotlight, and the cluster is a Kafka-only cluster (without Hadoop), do not perform this procedure. For this scenario, skip to Configure Streaming Spotlight.

Supported versions: See the CDH and CDP Private Cloud Base entries for Pepperdata 8.1.x in the table of Supported Platforms by Pepperdata Version

On This Page

Task 1: Activate Pepperdata on a Cloudera Manager Configured Cluster
Task 2: (Rarely Required) Open Port for Listening

Task 1: Activate Pepperdata on a Cloudera Manager Configured Cluster

To activate Pepperdata—inject the necessary instrumentation—across a Cloudera Manager configured cluster, add Pepperdata activation environment variables or Java options to each Hadoop service’s configuration options.

Procedure

Use Cloudera Manager to add the snippets described in this procedure’s steps.

Instrument the ResourceManager.

Add the following snippet to the YARN (MR2 Included) > Configuration > ResourceManager > Java Configuration Options for ResourceManager template.

Important: Enter all values on a single line.
```
-Dpepperdata.class.transformer=com.pepperdata.supervisor.classpatcherlib.ClassTransformerForYarn3Daemon -Dpepperdata.class.patching.enabled=true -javaagent:/opt/cloudera/parcels/PEPPERDATA_SUPERVISOR/lib/PepperdataSupervisor.jar
```
The snippets are different for instrumenting the ResourceManager and NodeManager.
Instrument the NodeManager.

Add the following snippet to the YARN (MR2 Included) > Configuration > NodeManager > Java Configuration Options for NodeManager template.

Important: Enter all values on a single line.
```
-Dpepperdata.nodemanager.connector.enabled=true -Dpepperdata.class.transformer=com.pepperdata.supervisor.classpatcherlib.ClassTransformerForYarn3Daemon -Dpepperdata.class.patching.enabled=true -javaagent:/opt/cloudera/parcels/PEPPERDATA_SUPERVISOR/lib/PepperdataSupervisor.jar
```
The snippets are different for instrumenting the NodeManager and ResourceManager.
Instrument the Spark service.

Add the following snippet to the Spark > Configuration > Gateway > Spark Client Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh template.

Important: Add the snippet to the end of the template.

This ensures that the activation script’s variable appends (YARN_NODEMANAGER_OPTS, YARN_RESOURCEMANAGER_OPTS, HBASE_REGIONSERVER_OPTS, and SPARK_SUBMIT_OPTS) are not overwritten by other assignments in the template.
```
PD_HOME=/opt/cloudera/parcels/PEPPERDATA_SUPERVISOR
PEPPERDATA_ACTIVATE_SCRIPT_PATH="/opt/cloudera/parcels/PEPPERDATA_SUPERVISOR/supervisor/lib/pepperdata-activate.sh"
if [ -e $PEPPERDATA_ACTIVATE_SCRIPT_PATH ]; then
 . $PEPPERDATA_ACTIVATE_SCRIPT_PATH
fi
```
(Spark 2) Instrument the Spark 2 service.

Add the following snippet to the Spark 2 > Configuration > Gateway > Spark Client Advanced Configuration Snippet (Safety Valve) for spark-conf/spark-env.sh template.

Important: Add the snippet to the end of the template.

This ensures that the activation script’s variable appends (YARN_NODEMANAGER_OPTS, YARN_RESOURCEMANAGER_OPTS, HBASE_REGIONSERVER_OPTS, and SPARK_SUBMIT_OPTS) are not overwritten by other assignments in the template.
```
PD_HOME=/opt/cloudera/parcels/PEPPERDATA_SUPERVISOR
PEPPERDATA_ACTIVATE_SCRIPT_PATH="/opt/cloudera/parcels/PEPPERDATA_SUPERVISOR/supervisor/lib/pepperdata-activate.sh"
if [ -e $PEPPERDATA_ACTIVATE_SCRIPT_PATH ]; then
 . $PEPPERDATA_ACTIVATE_SCRIPT_PATH
fi
```
Restart the following application daemons:
- YARN ResourceManager
- YARN NodeManagers (all in the cluster)
Select the Restart action for the Pepperdata service.

Task 2: (Rarely Required) Open Port for Listening

PepAgents listen on port 50505, whether they’re running on ResourceManager hosts, as we recommend, or on NodeManager hosts.

In most environments this port is available for use and is not blocked by internal firewalls. However, in rare situations, you might need to open/unblock this port or reconfigure which port Pepperdata uses.

Note: If port 50505 is used by another service, you can reconfigure which port Pepperdata uses by redefining the pepperdata.agent.rpc.server.port propery in the Pepperdata site file, pepperdata-site.xml.

• After you reconfigure the pepperdata.agent.rpc.server.port property (default=50505), restart the PepAgents.

(By default, the Pepperdata site file, pepperdata-site.xml, is located in /etc/pepperdata. If you customized the location, the file is specified by the PD_CONF_DIR environment variable. See Change the Location of pepperdata-site.xml for details.)

To enable SSL support, see Configure SSL Near Real-Time Monitoring on Port 50505.

For information about accessing the stats that are provided via the Web servlets associated with this port, with either HTTP or SSL-secured HTTPS communication, see Pepperdata Status Views via Web Servlets.