Ambari UI
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    Ambari UI

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    Article Summary

    Available in Classic

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

    Currently, Cloud Hadoop 1.3 or earlier provides Ambari 2.6 and uses HDP 2.5 stack. Cloud Hadoop 1.4 or higher uses Ambari 2.7.3, using its own open source-based HDP 3.1 stack to support Hadoop 3.1. A stack is the unit by which Ambari manages Hadoop and ecosystem services.

    Connect to Ambari UI

    The Ambari web UI can be accessed using the public IP assigned to the cluster. For more details, please refer to Access web UI.

    Screen description

    Dashboard tab

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

    chadoop-3-4-01_C.png

    Services tab

    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 [Service Actions]. (Using HDFS components as an example, available actions include restart, move name node, rebalance, etc.)

    chadoop-3-4-02_C.png

    Hosts tab

    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_C.png

    Alerts tab

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

    chadoop-3-4-04_C.png

    You can configure the alarm to be sent via email, Slack, etc., in [Actions] > Manage Notifications at the top left corner.

    chadoop-3-4-07_C.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
    

    Admin tab

    In the Admin page, you can check the service installed in the cluster, and account information.

    chadoop-3-4-05_C.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
    • Hive View: Execute Hive queries
    • Tez View: Execute Tez queries

    chadoop-3-4-06_C.png

    You can change the settings or create a new instance in [Cluster Administrator Account] > Manage Ambari > Views.

    chadoop-3-4-06-views1_C.png

    chadoop-3-4-06-views2_C.png


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