5. Nagios Alerts For Hadoop Services

The following section provides more information on the various Hadoop alerts provided by Ambari. All these alerts are displayed in Ambari Web and in the native Nagios web interface.

There are two types of alerts configured out-of-the-box with Ambari:

  • Host-level Alerts

    These alerts are related to a specific host and specific component running on that host. These alerts check a component and system-level metrics to determine health of the host.

  • Service-level Alerts

    These alerts are related to a Hadoop Service and do not pertain to a specific host. These alerts check one or more components of a service as well as system-level metrics to determine overall health of a Hadoop Service.

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