freshness_c1

Author: dagiro

articles/hdinsight/hdinsight-hadoop-manage-ambari.md

@@ -1,20 +1,20 @@
 ---
 title: Monitor and manage Azure HDInsight using Ambari Web UI 
-description: Learn how to use Ambari to monitor and manage Linux-based HDInsight clusters. In this document, you learn how to use the Ambari Web UI included with HDInsight clusters.
+description: Learn how to use Apache Ambari UI to monitor and manage HDInsight clusters.
 author: hrasheed-msft
 ms.author: hrasheed
 ms.reviewer: jasonh
 ms.service: hdinsight
 ms.topic: conceptual
 ms.custom: hdinsightactive
-ms.date: 02/05/2020
+ms.date: 04/16/2020
 ---
 
 # Manage HDInsight clusters by using the Apache Ambari Web UI
 
 [!INCLUDE [ambari-selector](../../includes/hdinsight-ambari-selector.md)]
 
-Apache Ambari simplifies the management and monitoring of an Apache Hadoop cluster by providing an easy to use web UI and REST API. Ambari is included on HDInsight clusters, and is used to monitor the cluster and make configuration changes.
+Apache Ambari simplifies the management and monitoring of an Apache Hadoop cluster. This simplification is done by providing an easy to use web UI and REST API. Ambari is included on HDInsight clusters, and is used to monitor the cluster and make configuration changes.
 
 In this document, you learn how to use the Ambari Web UI with an HDInsight cluster.
 
@@ -77,7 +77,7 @@ You can manage the groups by using the **Actions** menu and selecting **Manage A
 
 ![Apache Ambari manage alert groups](./media/hdinsight-hadoop-manage-ambari/ambari-manage-alerts.png)
 
-You can also manage alerting methods, and create alert notifications from the **Actions** menu by selecting __Manage Notifications__. Any current notifications are displayed. You can also create notifications from here. Notifications can be sent via **EMAIL** or **SNMP** when specific alert/severity combinations occur. For example, you can send an email message when any of the alerts in the **YARN Default** group is set to **Critical**.
+You manage alerting methods, and create alert notifications from the **Actions** menu by selecting __Manage Notifications__. Any current notifications are displayed. Create notifications from here. Notifications can be sent via **EMAIL** or **SNMP** when specific alert/severity combinations occur. For example, you can send an email message when any of the alerts in the **YARN Default** group is set to **Critical**.
 
 ![Apache Ambari create alert notification](./media/hdinsight-hadoop-manage-ambari/create-alert-notification.png)
 
@@ -114,10 +114,10 @@ Selecting a service displays more detailed information on the service.
 
 #### Quick links
 
-Some services display a **Quick Links** link at the top of the page. This can be used to access service-specific web UIs, such as:
+Some services display a **Quick Links** link at the top of the page. This link can be used to access service-specific web UIs, such as:
 
 * **Job History** - MapReduce job history.
-* **Resource Manager** - YARN ResourceManager UI.
+* **Resource Manager** - YARN Resource Manager UI.
 * **NameNode** - Hadoop Distributed File System (HDFS) NameNode UI.
 * **Oozie Web UI** - Oozie UI.
 
@@ -146,20 +146,20 @@ The **Hosts** page lists all hosts in the cluster. To manage hosts, follow these
 
 1. Select the host that you wish to manage.
 
-2. Use the **Actions** menu to select the action that you wish to perform:
+2. Use the **Actions** menu to select the action that you wish to do:
 
     |Item |Description |
     |---|---|
     |Start all components|Start all components on the host.|
     |Stop all components|Stop all components on the host.|
     |Restart all components|Stop and start all components on the host.|
-    |Turn on maintenance mode|Suppresses alerts for the host. This mode should be enabled if you're performing actions that generate alerts. For example, stopping and starting a service.|
+    |Turn on maintenance mode|Suppresses alerts for the host. This mode should be enabled if you're doing actions that generate alerts. For example, stopping and starting a service.|
     |Turn off maintenance mode|Returns the host to normal alerting.|
     |Stop|Stops DataNode or NodeManagers on the host.|
     |Start|Starts DataNode or NodeManagers on the host.|
     |Restart|Stops and starts DataNode or NodeManagers on the host.|
-    |Decommission|Removes a host from the cluster. **Do not use this action on HDInsight clusters.**|
-    |Recommission|Adds a previously decommissioned host to the cluster. **Do not use this action on HDInsight clusters.**|
+    |Decommission|Removes a host from the cluster. **Don't use this action on HDInsight clusters.**|
+    |Recommission|Adds a previously decommissioned host to the cluster. **Don't use this action on HDInsight clusters.**|
 
 ### <a id="service"></a>Services
 
@@ -170,11 +170,11 @@ From the **Dashboard** or **Services** page, use the **Actions** button at the b
 > [!WARNING]  
 > While **Add Service** is listed in this menu, it should not be used to add services to the HDInsight cluster. New services should be added using a Script Action during cluster provisioning. For more information on using Script Actions, see [Customize HDInsight clusters using Script Actions](hdinsight-hadoop-customize-cluster-linux.md).
 
-While the **Actions** button can restart all services, often you want to start, stop, or restart a specific service. Use the following steps to perform actions on an individual service:
+While the **Actions** button can restart all services, often you want to start, stop, or restart a specific service. Use the following steps to do actions on an individual service:
 
 1. From the **Dashboard** or **Services** page, select a service.
 
-2. From the top of the **Summary** tab, use the **Service Actions** button and select the action to take. This restarts the service on all nodes.
+2. From the top of the **Summary** tab, use the **Service Actions** button and select the action to take. This action restarts the service on all nodes.
 
     ![Apache Ambari individual service actions](./media/hdinsight-hadoop-manage-ambari/individual-service-actions.png)
 
@@ -206,10 +206,12 @@ Ambari Views allow developers to plug UI elements into the Ambari Web UI using t
 
 ## Unsupported operations
 
-The following Ambari operations are not supported on HDInsight:
+The following Ambari operations aren't supported on HDInsight:
 
-* __Moving the Metrics Collector service__. When viewing information on the Metrics Collector service, one of the actions available from the Service Actions menu is __Move Metrics collector__. This is not supported with HDInsight.
+* __Moving the Metrics Collector service__. When viewing information on the Metrics Collector service, one of the actions available from the Service Actions menu is __Move Metrics collector__. This action isn't supported with HDInsight.
 
 ## Next steps
 
-Learn how to use the [Apache Ambari REST API](hdinsight-hadoop-manage-ambari-rest-api.md) with HDInsight.
+* [Apache Ambari REST API](hdinsight-hadoop-manage-ambari-rest-api.md) with HDInsight.
+* [Use Apache Ambari to optimize HDInsight cluster configurations](./hdinsight-changing-configs-via-ambari.md)
+* [Scale Azure HDInsight clusters](./hdinsight-scaling-best-practices.md)