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<a href="../../../hadoop-project-dist/hadoop-hdfs/SLGUserGuide.html">Synthetic Load Generator</a>
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<h5>MapReduce</h5>
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<ul>
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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/DistributedCacheDeploy.html">Distributed Cache Deploy</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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</ul>
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<h5>MapReduce REST APIs</h5>
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<ul>
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<a href="../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapredAppMasterRest.html">MR Application Master</a>
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<a href="../../../hadoop-mapreduce-client/hadoop-mapreduce-client-hs/HistoryServerRest.html">MR History Server</a>
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<h5>YARN</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.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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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/NodeLabel.html">Node Labels</a>
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<li class="none">
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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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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/SecureContainer.html">Secure Containers</a>
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</li>
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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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</li>
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<li class="none">
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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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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/Federation.html">YARN Federation</a>
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</li>
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<li class="none">
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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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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/UsingFPGA.html">Using FPGA</a>
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</li>
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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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<li class="none">
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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>
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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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<li class="none">
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<a href="../../../hadoop-yarn/hadoop-yarn-site/yarn-service/Concepts.html">Concepts</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/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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<h1>System Services</h1><section>
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<h2><a name="Overview"></a>Overview</h2>
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<p>System services are admin configured services which are auto deployed during bootstrap of ResourceManager. This would work only when API-Server is started as part of ResourceManager. Refer <a href="QuickStart.html#Manage_services_on_YARN_via_REST_API">Manage services on YARN</a>. This document describes how to configure and deploy system services.</p></section><section>
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<h2><a name="Configuration"></a>Configuration</h2>
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<table border="0" class="bodyTable">
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<thead>
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<tr class="a">
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<th> Name </th>
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<th> Description </th></tr>
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</thead><tbody>
|
|
|
|
<tr class="b">
|
|
<td>yarn.service.system-service.dir</td>
|
|
<td> FS directory path to load and deploy admin configured services. These service spec files should be kept with proper hierarchy.</td></tr>
|
|
</tbody>
|
|
</table></section><section>
|
|
<h2><a name="Hierarchy_of_FS_path"></a>Hierarchy of FS path</h2>
|
|
<p>After configuring <i>yarn.service.system-service.dir</i> path, the spec files should be kept with below hierarchy.</p>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>$SYSTEM_SERVICE_DIR_PATH/<Launch-Mode>/<Users>/<Yarnfiles>.
|
|
</pre></div></div>
|
|
<section>
|
|
<h3><a name="Launch-Mode"></a>Launch-Mode</h3>
|
|
<p>Launch-Mode indicates that how the service should be deployed. Services can be auto deployed either synchronously or asynchronously.</p><section>
|
|
<h4><a name="sync"></a>sync</h4>
|
|
<p>These services are started synchronously along with RM. This might delay a bit RM transition to active period. This is useful when deploying critical services to get started sooner.</p></section><section>
|
|
<h4><a name="async"></a>async</h4>
|
|
<p>These services are started asynchronously without impacting RM transition period.</p></section></section><section>
|
|
<h3><a name="Users"></a>Users</h3>
|
|
<p>Users are the owner of the system service who has full access to modify it. Each users can own multiple services. Note that service names are unique per user.</p></section><section>
|
|
<h3><a name="Yarnfiles"></a>Yarnfiles</h3>
|
|
<p>YarnFiles are the spec files to launch services. These files must have .yarnfile extension otherwise those files are ignored.</p></section><section>
|
|
<h3><a name="Example_of_hierarchy_to_configure_system_services."></a>Example of hierarchy to configure system services.</h3>
|
|
|
|
<div class="source">
|
|
<div class="source">
|
|
<pre>SYSTEM_SERVICE_DIR_PATH
|
|
|---- sync
|
|
| |--- user1
|
|
| | |---- service1.yarnfile
|
|
| | |---- service2.yarnfile
|
|
| |--- user2
|
|
| | |---- service3.yarnfile
|
|
| | ....
|
|
| |
|
|
|---- async
|
|
| |--- user3
|
|
| | |---- service1.yarnfile
|
|
| | |---- service2.yarnfile
|
|
| |--- user4
|
|
| | |---- service3.yarnfile
|
|
| | ....
|
|
| |
|
|
</pre></div></div></section></section>
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