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<h5>MapReduce</h5>
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<a href="../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapReduceTutorial.html">Tutorial</a>
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<a href="../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapReduce_Compatibility_Hadoop1_Hadoop2.html">Compatibility with 1.x</a>
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<a href="../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/EncryptedShuffle.html">Encrypted Shuffle</a>
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<a href="../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/PluggableShuffleAndPluggableSort.html">Pluggable Shuffle/Sort</a>
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<a href="../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/SharedCacheSupport.html">Support for YARN Shared Cache</a>
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<h5>MapReduce REST APIs</h5>
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<a href="../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapredAppMasterRest.html">MR Application Master</a>
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<h5>YARN</h5>
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<ul>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/YARN.html">Architecture</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/YarnCommands.html">Commands Reference</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/CapacityScheduler.html">Capacity Scheduler</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/FairScheduler.html">Fair Scheduler</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/ResourceManagerRestart.html">ResourceManager Restart</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/ResourceManagerHA.html">ResourceManager HA</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/ResourceModel.html">Resource Model</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/NodeLabel.html">Node Labels</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/NodeAttributes.html">Node Attributes</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/WebApplicationProxy.html">Web Application Proxy</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/TimelineServer.html">Timeline Server</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/TimelineServiceV2.html">Timeline Service V.2</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/WritingYarnApplications.html">Writing YARN Applications</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/YarnApplicationSecurity.html">YARN Application Security</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/NodeManager.html">NodeManager</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/DockerContainers.html">Running Applications in Docker Containers</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/RuncContainers.html">Running Applications in runC Containers</a>
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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/NodeManagerCgroups.html">Using CGroups</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/SecureContainer.html">Secure Containers</a>
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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/ReservationSystem.html">Reservation System</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/GracefulDecommission.html">Graceful Decommission</a>
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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/OpportunisticContainers.html">Opportunistic Containers</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/Federation.html">YARN Federation</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/SharedCache.html">Shared Cache</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/UsingGpus.html">Using GPU</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/UsingFPGA.html">Using FPGA</a>
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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/PlacementConstraints.html">Placement Constraints</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/YarnUI2.html">YARN UI2</a>
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</li>
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</ul>
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<h5>YARN REST APIs</h5>
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<ul>
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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/WebServicesIntro.html">Introduction</a>
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</li>
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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/ResourceManagerRest.html">Resource Manager</a>
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</li>
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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/NodeManagerRest.html">Node Manager</a>
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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/TimelineServer.html#Timeline_Server_REST_API_v1">Timeline Server</a>
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</li>
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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/TimelineServiceV2.html#Timeline_Service_v.2_REST_API">Timeline Service V.2</a>
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</li>
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</ul>
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<h5>YARN Service</h5>
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<ul>
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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/yarn-service/Overview.html">Overview</a>
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</li>
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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/yarn-service/QuickStart.html">QuickStart</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-site/yarn-service/Concepts.html">Concepts</a>
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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/yarn-service/YarnServiceAPI.html">Yarn Service API</a>
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</li>
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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/yarn-service/ServiceDiscovery.html">Service Discovery</a>
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</li>
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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/yarn-service/SystemServices.html">System Services</a>
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</li>
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</ul>
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<h5>Hadoop Compatible File Systems</h5>
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<ul>
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<li class="none">
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<a href="../../../hadoop-aliyun/tools/hadoop-aliyun/index.html">Aliyun OSS</a>
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</li>
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<li class="none">
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<a href="../../../hadoop-aws/tools/hadoop-aws/index.html">Amazon S3</a>
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</li>
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<li class="none">
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<a href="../../../hadoop-azure/index.html">Azure Blob Storage</a>
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</li>
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<li class="none">
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<a href="../../../hadoop-azure-datalake/index.html">Azure Data Lake Storage</a>
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</li>
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<li class="none">
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<a href="../../../hadoop-cos/cloud-storage/index.html">Tencent COS</a>
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</li>
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<li class="none">
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<a href="../../../hadoop-huaweicloud/cloud-storage/index.html">Huaweicloud OBS</a>
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</li>
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</ul>
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<h5>Auth</h5>
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<ul>
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<a href="../../../hadoop-auth/index.html">Overview</a>
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<a href="../../../hadoop-auth/Configuration.html">Configuration</a>
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<a href="../../../hadoop-auth/BuildingIt.html">Building</a>
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</ul>
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<h5>Tools</h5>
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<ul>
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<a href="../../../hadoop-streaming/HadoopStreaming.html">Hadoop Streaming</a>
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<a href="../../../hadoop-archives/HadoopArchives.html">Hadoop Archives</a>
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<a href="../../../hadoop-archive-logs/HadoopArchiveLogs.html">Hadoop Archive Logs</a>
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<a href="../../../hadoop-distcp/DistCp.html">DistCp</a>
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<a href="../../../hadoop-federation-balance/HDFSFederationBalance.html">HDFS Federation Balance</a>
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<a href="../../../hadoop-gridmix/GridMix.html">GridMix</a>
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<a href="../../../hadoop-rumen/Rumen.html">Rumen</a>
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<a href="../../../hadoop-resourceestimator/ResourceEstimator.html">Resource Estimator Service</a>
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<a href="../../../hadoop-sls/SchedulerLoadSimulator.html">Scheduler Load Simulator</a>
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<a href="../../../hadoop-dynamometer/Dynamometer.html">Dynamometer</a>
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<h5>Reference</h5>
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<ul>
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<a href="../../../hadoop-project-dist/hadoop-common/release/">Changelog and Release Notes</a>
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<a href="../../../hadoop-project-dist/hadoop-common/Metrics.html">Metrics</a>
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<a href="../../../hadoop-project-dist/hadoop-common/core-default.xml">core-default.xml</a>
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<a href="../../../hadoop-project-dist/hadoop-hdfs/hdfs-default.xml">hdfs-default.xml</a>
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<a href="../../../hadoop-project-dist/hadoop-hdfs-rbf/hdfs-rbf-default.xml">hdfs-rbf-default.xml</a>
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<a href="../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/mapred-default.xml">mapred-default.xml</a>
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<a href="../../../hadoop-yarn/hadoop-yarn-common/yarn-default.xml">yarn-default.xml</a>
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<a href="../../../hadoop-kms/kms-default.html">kms-default.xml</a>
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<a href="../../../hadoop-hdfs-httpfs/httpfs-default.html">httpfs-default.xml</a>
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</li>
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<a href="../../../hadoop-project-dist/hadoop-common/DeprecatedProperties.html">Deprecated Properties</a>
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<!---
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. See accompanying LICENSE file.
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-->
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<h1>Quick Start</h1>
|
|
<p>This document describes how to deploy services on YARN using the YARN Service framework.</p>
|
|
<ul>
|
|
<li><a href="#Configure_and_start_HDFS_and_YARN_components">Configure and start HDFS and YARN components</a></li>
|
|
<li><a href="#Example_service">Example service</a></li>
|
|
<li><a href="#Manage_services_on_YARN_via_CLI">Manage services on YARN via CLI</a>
|
|
<ul>
|
|
<li><a href="#Deploy_a_service">Deploy a service</a></li>
|
|
<li><a href="#Flex_a_component_of_a_service">Flex a component of a service</a></li>
|
|
<li><a href="#Stop_a_service">Stop a service</a></li>
|
|
<li><a href="#Restart_a_stopped_service">Restart a stopped service</a></li>
|
|
<li><a href="#Destroy_a_service">Destroy a service</a></li></ul></li>
|
|
<li><a href="#Manage_services_on_YARN_via_REST_API">Manage services on YARN via REST API</a>
|
|
<ul>
|
|
<li><a href="#Deploy_a_service">Deploy a service</a></li>
|
|
<li><a href="#Get_a_service_status">Get a service status</a></li>
|
|
<li><a href="#Flex_a_component_of_a_service">Flex a component of a service</a></li>
|
|
<li><a href="#Stop_a_service">Stop a service</a></li>
|
|
<li><a href="#Restart_a_stopped_service">Restart a stopped service</a></li>
|
|
<li><a href="#Destroy_a_service">Destroy a service</a></li></ul></li>
|
|
<li><a href="#Services_UI_with_YARN_UI2_and_Timeline_Service_v2">Services UI with YARN UI2 and Timeline Service v2</a>
|
|
<ul>
|
|
<li><a href="#Enable_Timeline_Service_v2">Enable Timeline Service v2</a></li>
|
|
<li><a href="#Enable_new_YARN_UI">Enable new YARN UI</a></li></ul></li></ul>
|
|
<section>
|
|
<h2><a name="Configure_and_start_HDFS_and_YARN_components"></a>Configure and start HDFS and YARN components</h2>
|
|
<p>Start all the hadoop components for HDFS and YARN as usual. To enable the YARN Service framework, add this property to <code>yarn-site.xml</code> and restart the ResourceManager or set the property before the ResourceManager is started. This property is required for using the YARN Service framework through the CLI or the REST API.</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre> <property>
|
|
<description>
|
|
Enable services rest api on ResourceManager.
|
|
</description>
|
|
<name>yarn.webapp.api-service.enable</name>
|
|
<value>true</value>
|
|
</property>
|
|
</pre></div></div>
|
|
</section><section>
|
|
<h2><a name="Example_service"></a>Example service</h2>
|
|
<p>Below is a simple service definition that launches sleep containers on YARN by writing a simple spec file and without writing any code.</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>{
|
|
"name": "sleeper-service",
|
|
"version": "1.0",
|
|
"components" :
|
|
[
|
|
{
|
|
"name": "sleeper",
|
|
"number_of_containers": 1,
|
|
"launch_command": "sleep 900000",
|
|
"resource": {
|
|
"cpus": 1,
|
|
"memory": "256"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
</pre></div></div>
|
|
|
|
<p>User can simply run a pre-built example service on YARN using below command:</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>yarn app -launch <service-name> <example-name>
|
|
</pre></div></div>
|
|
|
|
<p>e.g. Below command launches a <code>sleeper</code> service named as <code>my-sleeper</code> on YARN.</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>yarn app -launch my-sleeper sleeper
|
|
</pre></div></div>
|
|
|
|
<p>For launching docker based services using YARN Service framework, please refer to <a href="YarnServiceAPI.html">API doc</a>.</p></section><section>
|
|
<h2><a name="Manage_services_on_YARN_via_CLI"></a>Manage services on YARN via CLI</h2>
|
|
<p>Below steps walk you through deploying a services on YARN using CLI. Refer to <a href="../YarnCommands.html">Yarn Commands</a> for the full list of commands and options.</p><section>
|
|
<h3><a name="Deploy_a_service"></a>Deploy a service</h3>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>yarn app -launch ${SERVICE_NAME} ${PATH_TO_SERVICE_DEF_FILE}
|
|
</pre></div></div>
|
|
|
|
<p>Params:</p>
|
|
<ul>
|
|
|
|
<li>SERVICE_NAME: The name of the service. Note that this needs to be unique across running services for the current user.</li>
|
|
<li>PATH_TO_SERVICE_DEF: The path to the service definition file in JSON format.</li>
|
|
</ul>
|
|
<p>For example:</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>yarn app -launch sleeper-service /path/to/local/sleeper.json
|
|
</pre></div></div>
|
|
</section><section>
|
|
<h3><a name="Flex_a_component_of_a_service"></a>Flex a component of a service</h3>
|
|
<p>Increase or decrease the number of containers for a component.</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>yarn app -flex ${SERVICE_NAME} -component ${COMPONENT_NAME} ${NUMBER_OF_CONTAINERS}
|
|
</pre></div></div>
|
|
|
|
<p>For example, for a service named <code>sleeper-service</code>:</p>
|
|
<p>Set the <code>sleeper</code> component to <code>2</code> containers (absolute number).</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>yarn app -flex sleeper-service -component sleeper 2
|
|
</pre></div></div>
|
|
|
|
<p>Relative changes are also supported for the ${NUMBER_OF_CONTAINERS} in the flex command, such as +2 or -2.</p></section><section>
|
|
<h3><a name="Stop_a_service"></a>Stop a service</h3>
|
|
<p>Stopping a service will stop all containers of the service and the ApplicationMaster, but does not delete the state of a service, such as the service root folder on hdfs.</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>yarn app -stop ${SERVICE_NAME}
|
|
</pre></div></div>
|
|
</section><section>
|
|
<h3><a name="Restart_a_stopped_service"></a>Restart a stopped service</h3>
|
|
<p>Restarting a stopped service is easy - just call start!</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>yarn app -start ${SERVICE_NAME}
|
|
</pre></div></div>
|
|
</section><section>
|
|
<h3><a name="Destroy_a_service"></a>Destroy a service</h3>
|
|
<p>In addition to stopping a service, it also deletes the service root folder on hdfs and the records in YARN Service Registry.</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>yarn app -destroy ${SERVICE_NAME}
|
|
</pre></div></div>
|
|
</section></section><section>
|
|
<h2><a name="Manage_services_on_YARN_via_REST_API"></a>Manage services on YARN via REST API</h2>
|
|
<p>The YARN API Server REST API is activated as part of the ResourceManager when <code>yarn.webapp.api-service.enable</code> is set to true.</p>
|
|
<p>Services can be deployed on YARN through the ResourceManager web endpoint.</p>
|
|
<p>Refer to <a href="YarnServiceAPI.html">API doc</a> for the detailed API specificatiosn.</p><section>
|
|
<h3><a name="Deploy_a_service"></a>Deploy a service</h3>
|
|
<p>POST the aforementioned example service definition to the ResourceManager api-server endpoint:</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>POST http://localhost:8088/app/v1/services
|
|
</pre></div></div>
|
|
</section><section>
|
|
<h3><a name="Get_a_service_status"></a>Get a service status</h3>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>GET http://localhost:8088/app/v1/services/${SERVICE_NAME}
|
|
</pre></div></div>
|
|
</section><section>
|
|
<h3><a name="Flex_a_component_of_a_service"></a>Flex a component of a service</h3>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>PUT http://localhost:8088/app/v1/services/${SERVICE_NAME}/components/${COMPONENT_NAME}
|
|
</pre></div></div>
|
|
|
|
<p><code>PUT</code> Request body:</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>{
|
|
"name": "${COMPONENT_NAME}",
|
|
"number_of_containers": ${COUNT}
|
|
}
|
|
</pre></div></div>
|
|
|
|
<p>For example:</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>{
|
|
"name": "sleeper",
|
|
"number_of_containers": 2
|
|
}
|
|
</pre></div></div>
|
|
</section><section>
|
|
<h3><a name="Stop_a_service"></a>Stop a service</h3>
|
|
<p>Stopping a service will stop all containers of the service and the ApplicationMaster, but does not delete the state of a service, such as the service root folder on hdfs.</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>PUT http://localhost:8088/app/v1/services/${SERVICE_NAME}
|
|
</pre></div></div>
|
|
|
|
<p><code>PUT</code> Request body:</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>{
|
|
"name": "${SERVICE_NAME}",
|
|
"state": "STOPPED"
|
|
}
|
|
</pre></div></div>
|
|
</section><section>
|
|
<h3><a name="Restart_a_stopped_service"></a>Restart a stopped service</h3>
|
|
<p>Restarting a stopped service is easy.</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>PUT http://localhost:8088/app/v1/services/${SERVICE_NAME}
|
|
</pre></div></div>
|
|
|
|
<p><code>PUT</code> Request body:</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>{
|
|
"name": "${SERVICE_NAME}",
|
|
"state": "STARTED"
|
|
}
|
|
</pre></div></div>
|
|
</section><section>
|
|
<h3><a name="Destroy_a_service"></a>Destroy a service</h3>
|
|
<p>In addition to stopping a service, it also deletes the service root folder on hdfs and the records in YARN Service Registry.</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>DELETE http://localhost:8088/app/v1/services/${SERVICE_NAME}
|
|
</pre></div></div>
|
|
</section></section><section>
|
|
<h2><a name="Services_UI_with_YARN_UI2_and_Timeline_Service_v2"></a>Services UI with YARN UI2 and Timeline Service v2</h2>
|
|
<p>A new <code>service</code> tab is added in the YARN UI2 specially to show YARN Services in a first class manner. The services framework posts the data into TimelineService and the <code>service</code> UI reads data from TimelineService to render its content.</p><section>
|
|
<h3><a name="Enable_Timeline_Service_v2"></a>Enable Timeline Service v2</h3>
|
|
<p>Please refer to <a href="../TimelineServiceV2.html">TimeLineService v2 doc</a> for how to enable Timeline Service v2.</p></section><section>
|
|
<h3><a name="Enable_new_YARN_UI"></a>Enable new YARN UI</h3>
|
|
<p>Set below config in <code>yarn-site.xml</code> and start ResourceManager. If you are building from source code, make sure you use <code>-Pyarn-ui</code> in the <code>mvn</code> command - this will generate the war file for the new YARN UI.</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre> <property>
|
|
<description>To enable RM web ui2 application.</description>
|
|
<name>yarn.webapp.ui2.enable</name>
|
|
<value>true</value>
|
|
</property>
|
|
</pre></div></div>
|
|
|
|
<h1>Run with security</h1>
|
|
<p>YARN service framework supports running in a secure (kerberized) environment. User needs to specify the kerberos principal name and keytab when they launch the service. E.g. A typical configuration looks like below:</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>{
|
|
"name": "sample-service",
|
|
...
|
|
...
|
|
"kerberos_principal" : {
|
|
"principal_name" : "hdfs-demo/_HOST@EXAMPLE.COM",
|
|
"keytab" : "file:///etc/security/keytabs/hdfs.headless.keytab"
|
|
}
|
|
}
|
|
</pre></div></div>
|
|
|
|
<p>Note that <code>_HOST</code> is required in the <code>principal_name</code> field because Hadoop client validates that the server’s (in this case, the AM’s) principal has hostname present when communicating to the server. * principal_name : the principal name of the user who launches the service * keytab : URI of the keytab. Currently supports only files present on the bare host. * URI starts with <code>file://</code> - A path on the local host where the keytab is stored. It is assumed that admin pre-installs the keytabs on the local host before AM launches.</p>
|
|
<h1>Run with Docker</h1>
|
|
<p>The above example is only for a non-docker container based service. YARN Service Framework also provides first-class support for managing docker based services. Most of the steps for managing docker based services are the same except that in docker the <code>Artifact</code> type for a component is <code>DOCKER</code> and the Artifact <code>id</code> is the name of the docker image. For details in how to setup docker on YARN, please check <a href="../DockerContainers.html">Docker on YARN</a>.</p>
|
|
<p>With docker support, it also opens up a set of new possibilities to implement features such as discovering service containers on YARN with DNS. Check <a href="ServiceDiscovery.html">ServiceDiscovery</a> for more details.</p></section></section>
|
|
</div>
|
|
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Apache Maven, Maven, Apache, the Apache feather logo, and the Apache Maven project logos are trademarks of The Apache Software Foundation.
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