iSCSI + GFS for web servers

Thu Feb 4 12:52:34 UTC 2016

Good morning Steven, (and Ubuntu list!)

I wish to apologize for my earlier, somewhat snarky, posts.  Especially
about glusterfs.  While, I do not need (for now) replicated storage nodes,
I do need multiple servers accessing a shared storage location in such as
way as to make any uploaded media immediately seen by both servers.  (In
this case it'll be uploaded images/documents/videos, etc.)  Initially I
write off glusterfs as it's overkill for my needs, however, I did some
deeper digging and see that I can start off with a single gluster storage
server and add more servers/storage as needed.  I'm going to start testing
that scenario later today to see how well it works and if it will satisfy
my needs going forward.  I hope it will, but I've had some bad experiences
with FUSER in the past, though that was a decade ago and has likely been
resolved.

With that said, I shouldn't let my frustration bleed out into communication
channels, which was the case here, though certainly not directed at anyone
on-list.

I'll be happy to post my results here if anyone is interested in this
particular scenario.

On Tue, Feb 2, 2016 at 7:01 PM, Steven Jones <Steven.Jones at vuw.ac.nz> wrote:

> Hi,
>
>
> I run a glusterfs 1 TB raid 1 solution replicated across 3 nodes using
> Dell SFF 990 desktops (so a 250gb OS disk and a 1tb data disk in each). Its
> cheap (they cost me $200 each, low energy - they use 29watts each) and
> simple to set up.   I have used openfiler, freenas and frankly I will never
> go near them again.
>
>
> I did some googling, not much of a response on the method / combination
> you want to use. That means it looks like you are on your own, which does
> not bode well for setup success or future support help if it goes to
> custard.
>
>
> Good luck.
>
>
> regards
>
> Steven
>
>
> ------------------------------
> *From:* ubuntu-users-bounces at lists.ubuntu.com <
> ubuntu-users-bounces at lists.ubuntu.com> on behalf of Mark Haney <
> mark.haney at vifprogram.com>
> *Sent:* Wednesday, 3 February 2016 2:18 a.m.
> *To:* Ubuntu user technical support, not for general discussions
> *Subject:* Re: iSCSI + GFS for web servers
>
> Yes, I know there are many ways to deal with this situation.  I've managed
> Petabyte SANs before for NOAA.  This isn't a situation that requires a PB
> level solution.  We're looking at a TB tops within the next 24 months based
> on current baseline data.  With that said, I'm not really looking for a
> storage *cluster* as much as I am storage being accessed by multiple
> servers that just happen to both be web servers.  I considered using
> FreeNAS, but it's almost verboten to use virtually.  I was going to use
> OpenFiler, but there are many posts concerning it's future development and
> it's very slow release cycle.
>
> So, it made sense to me to just build a Ubuntu VM with LIO and GFS2 on it,
> so that both web servers can access user created content from a central
> location.  Google has been somewhat helpful, but only significantly for RH
> based VMs.  While I can certainly throw in a RH server for this, I'd prefer
> to keep things simple and keep things All-Ubuntu if possible.  That's why I
> asked this list.
>
> Is it not possible to use iSCSI for multiple servers to access a GFS
> volume on that server and have Server A see new files uploaded by Server B
> without the need to the web front ends to build a 'cluster' for the
> storage?  I never had to do that with GFS1 that I can recall.
>
> I thought this might be a simple question to ask, but either I asked it
> very wrongly, or no one has set up a design like this before using Ubuntu.
>
>
> On Mon, Feb 1, 2016 at 6:58 PM, Steven Jones <Steven.Jones at vuw.ac.nz>
> wrote:
>
>> Hi,
>>
>>
>> I can see what you are about and its similar to what I assumed, I still
>> have reservations on using iSCSI.    There are several ways to skin a cat.
>> MANAGING UNSTRUCTURED DATA AT PETABYTE-SCALE
>> <http://www.storageconsortium.de/content/sites/default/files/downloads_registrated/RedHat_2013-11-14-RHS-SC-D%C3%BCsseldorf.pdf>
>> www.storageconsortium.de
>> MANAGING UNSTRUCTURED DATA AT PETABYTE-SCALE Joachim Schröder Manager
>> Solution Architects, DACH Email: joachim.schroeder at redhat.com November,
>> 14th 2013
>>
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>>
>>
>
>
> --
>
> Mark Haney ::: Senior Systems Engineer
> *VIF* International Education
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> 919-265-5006 office
>
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-- 

Mark Haney ::: Senior Systems Engineer
*VIF* International Education
P.O. Box 3566 ::: Chapel Hill, N.C. 27515 ::: USA
919-265-5006 office

Global learning for all.
www.vifprogram.com
<http://www.vifprogram.com/?utm_source=signature&utm_medium=email&utm_campaign=VIF>
Find VIF on Facebook <http://facebook.com/VIFInternationalEducation> |
Twitter <https://twitter.com/vifglobaled> | LinkedIn
<http://www.linkedin.com/company/vif-international-education>

Recognized as a ‘Best for the World’
<http://bestfortheworld.bcorporation.net/> B Corp!
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