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https://issues.apache.org/jira/browse/AMBARI-14854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15128920#comment-15128920
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jun aoki commented on AMBARI-14854:
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[~swagle], it will be an exciting feature!
Thinking of adding services later on, loading stack and service definition into
ambari should occur at runtime but not at setup.
Just in case users want to add on some services (, which is the same
requirement we have today) it should be done any time Ambari is running. if you
have an existing server, users won't have a chance to execute 'setup'.
> Support downloadable Ambari Management Packs
> --------------------------------------------
>
> Key: AMBARI-14854
> URL: https://issues.apache.org/jira/browse/AMBARI-14854
> Project: Ambari
> Issue Type: Epic
> Components: ambari-server
> Affects Versions: 2.0.0
> Reporter: Siddharth Wagle
> Assignee: Siddharth Wagle
> Priority: Critical
> Fix For: 2.4.0
>
>
> _Motivation_:
> Completely Decouple Ambari's cluster management and monitoring functions from
> stack management and definition. This is true to some extent however the
> objective of this Jira is to identify and address all issues that do not
> allow Ambari core to live without a stack definition and thereby define the
> scope of work as : "Allow stack definition to be a deploy time artifact vs
> compile time".
> In this regard following is short-term goals that can be achieved for the
> next minor release version.
> _Goals_:
> - Allow ambari to be shipped without a default stack definition
> - On server setup:
> -- Make sure ambari gets a stack definition from the FS or a URL
> -- Support basic checksum validation on the downloaded stack
> - Make sure Ambari start after _setup-management-pack_ operation results in
> graceful failure for _in-compatible_ stack definition downloaded. Example:
> Deployed stack version is not present in the downloaded management pack.
> - Support updates to the pack (to be scoped out)
> _Assumptions_:
> - The stack definition is a copy/download and replace (with backup), we do
> not support fine-grained service merge / replace
> - New definition is all inclusive stack def of all service versions supported
> with current deployed version of Ambari
> - The stack can have newer versions of services.
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