Reliably share a persistent filesystem between units

[Robin Winslow]

Thanks everyone, some really helpful suggestions there.

> On the storage roadmap we have shared filesystems, so your underlying
> cloud could provide these and Juju would organise them to be in the
> right place for each unit.

Is there any information online that you could link me to about these
ideas, so I can get an idea of what this offering would look like?

> interestingly Amazon recently brought their Elastic File Service

Thanks, I'll read up on the Elastic File Service, maybe that'll help me
better understand what the shape of the eventual Juju solution would look
like.

> I should also have mentioned that there are IIRC a few bundles which
> actually setup an NFS server and clients in the bundle in order to
> provide this entirely internally to the bundle (i.e. without any cloud
> or juju mediated storage management).

If anyone could link me to any specific bundles which implement this sort
of solution with NFS, that would be very interesting to look at.

> CephFS has come up with some of our team and at this time it's not
something that folks are relying on production so I'm hesitant to vote
up/down on that.

Did your guys get anywhere with looking into CephFS? Do you think it would
be something that's worth experimenting with and maybe developing charms
around even if it's not for production use at this stage?

On Thu, Jul 7, 2016 at 1:58 PM Rick Harding <rick.harding at canonical.com>
wrote:

> Robin, there's a few ways to go about it. CephFS has come up with some of
> our team and at this time it's not something that folks are relying on
> production so I'm hesitant to vote up/down on that.
>
> You question on the NFS charm got me thinking that we do have a storage
> subordinate that's been used in the past [1] and while the NFS charm
> doesn't currently support it [2] I wonder if that would be a decently easy
> path forward to giving a persistent place to keep that NFS data.
>
> Finally, as Mark mentioned we do want to provide this through Juju and
> interestingly Amazon recently brought their Elastic File Service [3] which
> is specifically built around many of the ideas Juju will want to allow,
> such as a single filesystem shared to a Hadoop cluster for data processing
> and the like. While limited to a single cloud for now, it points towards
> the path you're looking to head down.
>
> 1: https://jujucharms.com/storage/
> 2: https://jujucharms.com/nfs/
> 3: https://aws.amazon.com/efs/
>
> On Thu, Jul 7, 2016 at 6:45 AM Mark Shuttleworth <mark at ubuntu.com> wrote:
>
>>
>> I should also have mentioned that there are IIRC a few bundles which
>> actually setup an NFS server and clients in the bundle in order to
>> provide this entirely internally to the bundle (i.e. without any cloud
>> or juju mediated storage management).
>>
>> Mark
>>
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>
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