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From "Jonathan Hurley (JIRA)" <>
Subject [jira] [Updated] (AMBARI-7955) Alerts: Expose the Ability to Create Host-Only Alerts
Date Fri, 24 Oct 2014 18:48:33 GMT


Jonathan Hurley updated AMBARI-7955:
    Attachment: AMBARI-7928.patch

> Alerts: Expose the Ability to Create Host-Only Alerts
> -----------------------------------------------------
>                 Key: AMBARI-7955
>                 URL:
>             Project: Ambari
>          Issue Type: Task
>          Components: alerts, ambari-agent, ambari-server
>    Affects Versions: 2.0.0
>            Reporter: Jonathan Hurley
>            Assignee: Jonathan Hurley
>             Fix For: 2.0.0
>         Attachments: AMBARI-7928.patch
> Adds "host-only" alerts to the alert framework infrastructure. Alerts that are only for
a host are those that are run on every host in the cluster and are not bound to any particular
stack service. They exist "outside" of the stack.
> In order to accomplish this, several changes were made:
> 1) A new alerts.json was created at the root resources directory to represent host-only
alerts. This file is parsed separately from the stack but its definitions are merged into
the database in the same manner as those from the stack
> 2) These new alerts must be bound to the service AMBARI and component AMBARI_AGENT
> 3) Host alerts are usually custom scripts; a new directory was needed so that resources
could be copied from the Ambari Server to the Agent in the same manner that the stack and
custom_actions resources are copied. This is the new "host_scripts" directory.
> 4) RPM updates to ensure that "host_scripts" is properly packaged.

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