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.
View by application
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.
You can view the status of installed services with indicators and graphs.
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.)
You can view information about all the hosts that make up the cluster.
This is where you can view Ambari default setting's alarm rule or modify the threshold for each alarm.
You can enable this alarm to be sent to e-mail, Slack, etc. in [ACTIONS] > [Manage Notifications] in the upper right 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 Protoco) 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
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.
Ambari Views provides YARN Queue Manager, Files View (HDFS), Hive View, and Tez View instances by default. You can change the settings or create a new instance in [User account] > [Manage Ambari] > Views.
- YARN Queue Manager: Set YARN service queues
- Files View: View, upload, and download HDFS files
In Ambari 2.6, you can view the Dashboard, Services, Hosts, Alerts, Admin menus in the top tab of the screen as shown below.