opensearch-docs-cn/_data-prepper/getting-started.md

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Getting started with Data Prepper

Data Prepper is an independent component, not an OpenSearch plugin, that converts data for use with OpenSearch. It's not bundled with the all-in-one OpenSearch installation packages.

If you are migrating from Open Distro Data Prepper, see Migrating from Open Distro. {: .note}

1. Installing Data Prepper

There are two ways to install Data Prepper: you can run the Docker image or build from source.

The easiest way to use Data Prepper is by running the Docker image. We suggest that you use this approach if you have Docker available. Run the following command:

docker pull opensearchproject/data-prepper:latest

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If you have special requirements that require you to build from source, or if you want to contribute, see the Developer Guide.

2. Configuring Data Prepper

You must configure Data Prepper with a pipeline before running it. You'll modify the following files:

• data-prepper-config.yaml
• pipelines.yaml

To configure Data Prepper, see the following information for each use case:

• Trace analytics: Learn how to collect trace data and customize a pipeline that ingests and transforms that data.
• Log analytics: Learn how to set up Data Prepper for log observability.

3. Defining a pipeline

Create a Data Prepper pipeline file, pipelines.yaml, with the following configuration:

simple-sample-pipeline:
  workers: 2
  delay: "5000"
  source:
    random:
  sink:
    - stdout:

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4. Running Data Prepper

Run the following command with your pipeline configuration YAML.

docker run --name data-prepper \
    -v /${PWD}/pipelines.yaml:/usr/share/data-prepper/pipelines/pipelines.yaml \
    opensearchproject/data-prepper:latest
    

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The example pipeline configuration above demonstrates a simple pipeline with a source (random) sending data to a sink (stdout). For examples of more advanced pipeline configurations, see Pipelines.

After starting Data Prepper, you should see log output and some UUIDs after a few seconds:

2021-09-30T20:19:44,147 [main] INFO  com.amazon.dataprepper.pipeline.server.DataPrepperServer - Data Prepper server running at :4900
2021-09-30T20:19:44,681 [random-source-pool-0] INFO  com.amazon.dataprepper.plugins.source.RandomStringSource - Writing to buffer
2021-09-30T20:19:45,183 [random-source-pool-0] INFO  com.amazon.dataprepper.plugins.source.RandomStringSource - Writing to buffer
2021-09-30T20:19:45,687 [random-source-pool-0] INFO  com.amazon.dataprepper.plugins.source.RandomStringSource - Writing to buffer
2021-09-30T20:19:46,191 [random-source-pool-0] INFO  com.amazon.dataprepper.plugins.source.RandomStringSource - Writing to buffer
2021-09-30T20:19:46,694 [random-source-pool-0] INFO  com.amazon.dataprepper.plugins.source.RandomStringSource - Writing to buffer
2021-09-30T20:19:47,200 [random-source-pool-0] INFO  com.amazon.dataprepper.plugins.source.RandomStringSource - Writing to buffer
2021-09-30T20:19:49,181 [simple-test-pipeline-processor-worker-1-thread-1] INFO  com.amazon.dataprepper.pipeline.ProcessWorker -  simple-test-pipeline Worker: Processing 6 records from buffer
07dc0d37-da2c-447e-a8df-64792095fb72
5ac9b10a-1d21-4306-851a-6fb12f797010
99040c79-e97b-4f1d-a70b-409286f2a671
5319a842-c028-4c17-a613-3ef101bd2bdd
e51e700e-5cab-4f6d-879a-1c3235a77d18
b4ed2d7e-cf9c-4e9d-967c-b18e8af35c90

The remainder of this page provides examples for running Data Prepper from the Docker image. If you built it from source, refer to the Developer Guide for more information.

However you configure your pipeline, you'll run Data Prepper the same way. You run the Docker image and modify both the pipelines.yaml and data-prepper-config.yaml files.

For Data Prepper 2.0 or later, use this command:

docker run --name data-prepper -p 4900:4900 -v ${PWD}/pipelines.yaml:/usr/share/data-prepper/pipelines/pipelines.yaml -v ${PWD}/data-prepper-config.yaml:/usr/share/data-prepper/config/data-prepper-config.yaml opensearchproject/data-prepper:latest

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For Data Prepper versions earlier than 2.0, use this command:

docker run --name data-prepper -p 4900:4900 -v ${PWD}/pipelines.yaml:/usr/share/data-prepper/pipelines.yaml -v ${PWD}/data-prepper-config.yaml:/usr/share/data-prepper/data-prepper-config.yaml opensearchproject/data-prepper:1.x

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Once Data Prepper is running, it processes data until it is shut down. Once you are done, shut it down with the following command:

POST /shutdown

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Additional configurations

For Data Prepper 2.0 or later, the Log4j 2 configuration file is read from config/log4j2.properties in the application's home directory. By default, it uses log4j2-rolling.properties in the shared-config directory.

For Data Prepper 1.5 or earlier, optionally add "-Dlog4j.configurationFile=config/log4j2.properties" to the command if you want to pass a custom log4j2 properties file. If no properties file is provided, Data Prepper defaults to the log4j2.properties file in the shared-config directory.

Next steps

Trace analytics is an important Data Prepper use case. If you haven't yet configured it, see Trace analytics.

Log ingestion is also an important Data Prepper use case. To learn more, see Log analytics.

To learn how to run Data Prepper with a Logstash configuration, see Migrating from Logstash.

For information on how to monitor Data Prepper, see Monitoring.

More examples

For more examples of Data Prepper, see examples in the Data Prepper repo.