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      Ambari UI
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        Ambari UI

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          Article Summary

          Available in VPC

          Apache Ambari is a project that can provision, monitor, and conduct other management tasks related to a Hadoop cluster.

          The current version of Cloud Hadoop 1.3 offers an Ambari of 2.6, using 2.5 stacks. Starting with Cloud Hadoop 1.4, Ambari 2.7.3 uses its own open-source 3.1 stack for Hadoop 3.1 support. The stack here is the unit that Ambari manages Hadoop and ecosystem services.

          Connect to Ambari UI

          After selecting a cluster created in the Cloud Hadoop console, you can access the Ambari Web UI through [View by Application]. For more details, please refer to UI access and password settings by service.

          Screen description

          Dashboard

          You can view the status of installed services with indicators and graphs.

          chadoop-3-4-01_ko.png

          Services

          You can go to management pages of various services installed in the cluster to view components on each service and their statuses. You can also view them on the sidebar left of the screen. You can manage components under [ACTIONS]. (Using HDFS components as an example, available actions include restart, move name node, rebalance, etc.)

          chadoop-3-4-02_ko.png

          Hosts

          You can view information about all the hosts that make up the cluster.

          • You can check the host name and private IP of the Cloud Hadoop cluster.

          chadoop-3-4-03_ko.png

          Alerts

          This is where you can view Ambari default setting's alarm rule or modify the threshold for each alarm.

          chadoop-3-4-04_en.png

          You can enable this alarm to be sent to e-mail, Slack, etc. in [ACTIONS] > Manage Notifications in the upper right corner.

          chadoop-3-4-07_en.png

          To receive notifications via email via Ambari notifications, you need to configure the cluster ACG as below so that the cluster and the SMTP(Simple Mail Transfer Protocol) server can communicate with each other.
          chadoop-3-4-08_en.png

          After configuring the ACG, run the following command on the edge node to check if the ACG is properly configured.

          telnet <SMTP-SERVER-IP> 25

          Cluster Admin

          In the Cluster Admin page, you can check the service installed in the cluster, and account information. You can kerberize clusters in Kerberos. For more details about kerberizing, refer to Configure secure Hadoop clusters.

          chadoop-3-4-05_en.png

          Ambari Views

          Ambari Views provides YARN Queue Manager, Files View (HDFS), Hive View, and Tez View instances by default.

          • YARN Queue Manager: Set YARN service queues
          • Files View: View, upload, and download HDFS files

          chadoop-3-4-06_en.png

          You can change the settings or create a new instance in [cluster account name] > Manage Ambari > Views.
          chadoop-3-4-06-views1_ko.png

          chadoop-3-4-06-views2_ko.png

          Note

          In Ambari 2.6, you can view the Dashboard, Services, Hosts, Alerts, Admin menus in the top tab of the screen as shown below.

          hadoop-vpc-8_1-1_en

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