fuel-dev team mailing list archive

[Mike Scherbakov <mscherbakov@xxxxxxxxxxxx>]

Why can't we track storage for mongo as just one of the tasks in existing
blueprint for ceilometer-mongodb? It looks to me pretty granular one. More
over, I think we need to keep such details in one single design document of
the bigger story.

There was a document with numbers regarding disk consumption, not sure
about IO. Max, do you have this info? Based on disk IO & space requirements
we are all can propose and come to an agreement in logic for disk
partitioning. For example, if IO is high, we may always require separated
disk(s) for it. There is might be recommendation on fs type for mongodb as
well. We mongodb is collacated with some other roles, such as compute, we
will need to come up with logic how to distribute disk space between
"virtual storage" LVM and mongodb (50/50 or other ratio?).

Thanks,
On Mar 26, 2014 5:43 PM, "Bogdan Dobrelya" <bdobrelia@xxxxxxxxxxxx> wrote:

> On 03/26/2014 02:15 PM, Maksim Mazur wrote:
> > Hi!
> >
> > I need to create disk allocation rule for MongoDB role. (MongoDB is
> > NoSQL backend for Ceilometer)
> >
> >
> > I have no experience with high-loaded MongoDB single instances or
> > ReplicaSets.
> >
> > For the first view having a dedicated drive or raid array for MondoDB
> > data looks like good idea for large installations but it is overkill for
> > small stacks.
> > And I'm not sure is it possible to use dedicated drive if MongoDB role
> > applyed on Controller.
> >
> >
> > Could you please help me with task?
> >
> >
> > Best Regards,
> > Max Mazur.
> >
> >
> >
> >
>
> Hi all.
>
> I suggest to follow the existing guideline Fuel UI provides for disks
> configuration for nodes. As a start, you could create a new blueprint to
> define new storage ("Mongo DB Storage") for Nailgun UI to be used by
> Fuel on provision stage.
>
> There are a similar tasks with "Openstack DB Storage" (in TODO list) and
> separated "Logs Storage" ( see
> https://etherpad.openstack.org/p/manage-logs-with-free-space-consideration
> for BP
>
> https://blueprints.launchpad.net/fuel/+spec/manage-logs-with-free-space-consideration
> )
>
> Note: the blueprint was not approved yet, but I believe some patterns
> could be reused for Mongo/Openstack DB storages as well... E.g. the
> sections 'Fuel-UI requirements', 'Planning disk partitions, RAID type,
> logical volume for Remote Logs Storage'.
>
> --
> Best regards,
> Bogdan Dobrelya,
> Skype #bogdando_at_yahoo.com
> Irc #bogdando
>
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