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Ambari UI
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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.
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.)
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.
Alerts tab
This is where you can view Ambari default setting's alarm rule or modify the threshold for each alarm.
You can configure the alarm to be sent via email, Slack, etc., in [Actions] > Manage Notifications at the top left corner.
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.
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.
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
You can change the settings or create a new instance in [Cluster Administrator Account] > Manage Ambari > Views.