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https://issues.apache.org/jira/browse/AMBARI-12293?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sumit Mohanty resolved AMBARI-12293.
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Resolution: Won't Fix
> Allow auto execution of command/task at specific life cycle stages of a
> cluster
> -------------------------------------------------------------------------------
>
> Key: AMBARI-12293
> URL: https://issues.apache.org/jira/browse/AMBARI-12293
> Project: Ambari
> Issue Type: Task
> Components: ambari-server, stacks
> Affects Versions: 2.1.0
> Reporter: Sumit Mohanty
> Assignee: Sumit Mohanty
> Priority: Critical
> Fix For: 2.3.0
>
>
> During cluster creation (or add hosts), especially in the hosted clusters in
> cloud environment, it is a requirement to execute tasks/commands at specific
> life-cycle stages.
> Samples of such stages are:
> * pre-install - before any components are installed
> * post-install - after all components are installed
> * pre-start - before starting any components
> * post-start - after all starts are complete
> These tasks are generally expected to be executed for each host and at least
> once. It is expected that these tasks be auto-executed. In addition if these
> tasks fail it may result in fast fail - aborting any other tasks following
> these.
> Samples of such tasks are -
> * perform host level setup (create local users, files, and folders)
> * perform custom health checks
> To support auto-execution, it is also necessary to allow saved configuration
> for the tasks being auto-executed.
> While it may not be necessary, it will be good to allow execution of the
> above tasks at any other time through explicit API calls.
> Ambari today has support for custom command/action. Custom actions can be
> defined as stand alone tasks that can be invoked anytime through APIs. Custom
> commands are commands associated with specific services. The design of this
> feature should take into account the existing capabilities.
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