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The Enhanced Configs feature makes it possible for service providers to customize their service's configs to a great deal and determine which configs are prominently shown to user without making any UI code changes. Customization includes providing a service friendly layout, better controls (sliders, combos, lists, toggles, spinners, etc.), better validation (minimum, maximum, enums), automatic unit conversion (MB, GB, seconds, milliseconds, etc.), configuration dependencies and improved dynamic recommendations of default values.

  A service provider can accomplish all the above just by changing their service definition in the stacks/ folder.

Read more in the Enhanced Configs  page

Alerts

Kerberos

Metrics

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Each service is capable of defining which alerts Ambari should track by providing an alerts.json file.

Read more about Ambari Alerts framework here.

Kerberos

Ambari is capable of enabling and disabling Kerberos for a cluster. To inform Ambari of the identities and configurations to be used for the service and its components, each service can provide a kerberos.json file.

Read more about the Kerberos support and the Kerberos Descriptor in the Automated Kerberization page.

Metrics

Ambari provides the Ambari Metrics System ("AMS") service for collecting, aggregating and serving Hadoop and system metrics in Ambari-managed clusters.

Each service can define which metrics AMS should collect and provide by defining a metrics.json file.
You can read about the metrics.json file format in the Stack Defined Metrics page. 

Widgets

Define Stack

Services

Command Order

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