Service
Service is a software that functions on hosts. Service can be a single entity or a logical entity that consists of several components (such as HDFS).
Examples of services:
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HDFS
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Hive
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Postgres
The set of services depends on the bundle that is used to deploy a cluster. After the cluster is created, you can choose services on the Services tab of the cluster page.

The Services tab
For detailed information about work with services in the ADCM UI, see Overview of the Clusters tab in the ADCM UI.