Merge pull request #88958 from dagiro/cats128

cats128

Author: PRMerger19

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

@@ -2,13 +2,12 @@
 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.
 author: hrasheed-msft
+ms.author: hrasheed
 ms.reviewer: jasonh
-
 ms.service: hdinsight
 ms.custom: hdinsightactive
 ms.topic: conceptual
 ms.date: 05/23/2019
-ms.author: hrasheed
 ---
 
 # Manage HDInsight clusters by using the Apache Ambari Web UI
@@ -43,7 +42,7 @@ When connecting to the Ambari Web UI, you are prompted to authenticate to the pa
 
 When the page opens, note the bar at the top. This bar contains the following information and controls:
 
-![ambari-nav](./media/hdinsight-hadoop-manage-ambari/apache-ambari-dashboard.png)
+![Apache Ambari dashboard overview](./media/hdinsight-hadoop-manage-ambari/apache-ambari-dashboard.png)
 
 |Item |Description |
 |---|---|
@@ -72,44 +71,44 @@ Alerts other than **OK** cause the **# alerts** entry at the top of the page to
 
 Alerts are organized into several default groups, which can be viewed from the **Alerts** page.
 
-![alerts page](./media/hdinsight-hadoop-manage-ambari/hdinsight-alerts-page.png)
+![Apache Ambari alerts page summary](./media/hdinsight-hadoop-manage-ambari/hdinsight-alerts-page.png)
 
 You can manage the groups by using the **Actions** menu and selecting **Manage Alert Groups**.
 
-![manage alert groups dialog](./media/hdinsight-hadoop-manage-ambari/ambari-manage-alerts.png)
+![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 Alert 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**.
 
-![Create alert dialog](./media/hdinsight-hadoop-manage-ambari/create-alert-notification.png)
+![Apache Ambari create alert notification](./media/hdinsight-hadoop-manage-ambari/create-alert-notification.png)
 
 Finally, selecting __Manage Alert Settings__ from the __Actions__ menu allows you to set the number of times an alert must occur before a notification is sent. This setting can be used to prevent notifications for transient errors.
 
 ### Cluster
 
 The **Metrics** tab of the dashboard contains a series of widgets that make it easy to monitor the status of your cluster at a glance. Several widgets, such as **CPU Usage**, provide additional information when clicked.
 
-![dashboard with metrics](./media/hdinsight-hadoop-manage-ambari/hdi-metrics-dashboard.png)
+![Apache Ambari dashboard with metrics](./media/hdinsight-hadoop-manage-ambari/hdi-metrics-dashboard.png)
 
 The **Heatmaps** tab displays metrics as colored heatmaps, going from green to red.
 
-![dashboard with heatmaps](./media/hdinsight-hadoop-manage-ambari/hdi-heatmap-dashboard.png)
+![Apache Ambari dashboard with heatmaps](./media/hdinsight-hadoop-manage-ambari/hdi-heatmap-dashboard.png)
 
 For more information on the nodes within the cluster, select **Hosts**. Then select the specific node you are interested in.
 
-![host details](./media/hdinsight-hadoop-manage-ambari/ambari-host-details1.png)
+![Apache Ambari host summary details](./media/hdinsight-hadoop-manage-ambari/ambari-host-details1.png)
 
 ### Services
 
 The **Services** sidebar on the dashboard provides quick insight into the status of the services running on the cluster. Various icons are used to indicate status or actions that should be taken. For example, a yellow recycle symbol is displayed if a service needs to be recycled.
 
-![services side-bar](./media/hdinsight-hadoop-manage-ambari/apache-ambari-service-bar.png)
+![Apache Ambari services side bar](./media/hdinsight-hadoop-manage-ambari/apache-ambari-service-bar.png)
 
 > [!NOTE]  
 > The services displayed differ between HDInsight cluster types and versions. The services displayed here may be different than the services displayed for your cluster.
 
 Selecting a service displays more detailed information on the service.
 
-![service summary information](./media/hdinsight-hadoop-manage-ambari/ambari-service-details.png)
+![Apache Ambari service summary information](./media/hdinsight-hadoop-manage-ambari/ambari-service-details.png)
 
 #### Quick links
 
@@ -138,7 +137,7 @@ Working with users, groups, and permissions are supported when using a [domain j
 
 The **Hosts** page lists all hosts in the cluster. To manage hosts, follow these steps.
 
-![hosts page](./media/hdinsight-hadoop-manage-ambari/hdinsight-hosts-page.png)
+![Apache Ambari hosts page overview](./media/hdinsight-hadoop-manage-ambari/hdinsight-hosts-page.png)
 
 > [!NOTE]  
 > Adding, decommissioning, and recommissioning a host should not be used with HDInsight clusters.
@@ -164,7 +163,7 @@ The **Hosts** page lists all hosts in the cluster. To manage hosts, follow these
 
 From the **Dashboard** or **Services** page, use the **Actions** button at the bottom of the list of services to stop and start all services.
 
-![service actions](./media/hdinsight-hadoop-manage-ambari/ambari-service-actions.png)
+![Apache Ambari service actions list](./media/hdinsight-hadoop-manage-ambari/ambari-service-actions.png)
 
 > [!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).
@@ -175,7 +174,7 @@ While the **Actions** button can restart all services, often you want to start,
 
 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.
 
-    ![service action](./media/hdinsight-hadoop-manage-ambari/individual-service-actions.png)
+    ![Apache Ambari individual service actions](./media/hdinsight-hadoop-manage-ambari/individual-service-actions.png)
 
    > [!NOTE]  
    > Restarting some services while the cluster is running may generate alerts. To avoid alerts, you can use the **Service Actions** button to enable **Maintenance mode** for the service before performing the restart.
@@ -191,7 +190,7 @@ To configure a service, use the following steps:
 
 2. Select the **Configs** tab. The current configuration is displayed. A list of previous configurations is also displayed.
 
-    ![configurations](./media/hdinsight-hadoop-manage-ambari/ambari-service-configs.png)
+    ![Apache Ambari service configuration](./media/hdinsight-hadoop-manage-ambari/ambari-service-configs.png)
 
 3. Use the fields displayed to modify the configuration, and then select **Save**. Or select a previous configuration and then select **Make current** to roll back to the previous settings.
 
@@ -211,4 +210,4 @@ The following Ambari operations are not supported on HDInsight:
 
 ## Next steps
 
-Learn how to use the [Apache Ambari REST API](hdinsight-hadoop-manage-ambari-rest-api.md) with HDInsight.
+Learn how to use the [Apache Ambari REST API](hdinsight-hadoop-manage-ambari-rest-api.md) with HDInsight.