[jira] [Commented] (MESOS-1791) Introduce Master / Offer Resource Reservations

["Chris Drake (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-1791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14339687#comment-14339687 ] 

Chris Drake commented on MESOS-1791:
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Could this feature be used by the master(s) to keep track of a central resource such as software licenses?

Let's say you only have ten licenses to run a batch execution of some commercial CAD software that uses FlexLM to limit the number of instances you can run at once. That resource doesn't belong to any slave, but we need the system to keep track of it nevertheless. Also need the ability to modify that value w/o shutting down the server if licenses expire or you buy new ones.

> Introduce Master / Offer Resource Reservations
> ----------------------------------------------
>
>                 Key: MESOS-1791
>                 URL: https://issues.apache.org/jira/browse/MESOS-1791
>             Project: Mesos
>          Issue Type: Epic
>            Reporter: Tom Arnfeld
>              Labels: mesosphere
>
> Currently Mesos supports the ability to reserve resources (for a given role) on a per-slave basis, as introduced in MESOS-505. This allows you to almost statically partition off a set of resources on a set of machines, to guarantee certain types of frameworks get some resources.
> This is very useful, though it is also very useful to be able to control these reservations through the master (instead of per-slave) for when I don't care which nodes I get on, as long as I get X cpu and Y RAM, or Z sets of (X,Y).
> I'm not sure what structure this could take, but apparently it has already been discussed. Would this be a CLI flag? Could there be a (authenticated) web interface to control these reservations?



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