[Openstack-operators] Scalable Glance Nodes

Joe Topjian joe.topjian at cybera.ca
Tue Mar 19 03:39:31 UTC 2013


Cool - thank you very much!

One more question: are you doing any HA for the Glace database?


On Mon, Mar 18, 2013 at 9:43 PM, Narayan Desai <narayan.desai at gmail.com>wrote:

> We're currently running two systems (in the middle of a migration). In
> both, we just have the basic brick level replication, using 2 way
> replication in one case, and 4 way in the other. We're running a relatively
> small image archive; about 1TB.
>
> Because the machine has a decent network (QDR infinband using IPOIB), we
> don't actually need multiple glance servers for scalability reasons, we
> just have the services HA'd with pacemaker.
>
> Generally speaking, our workload tends to be relatively synchronized; at
> periods of high use, you might have a single user firing up a hundred
> instances. That leaves us network bound, but the infiniband tends to stand
> up to that load pretty well.
>  -nld
>
>
> On Mon, Mar 18, 2013 at 8:55 PM, Joe Topjian <joe.topjian at cybera.ca>wrote:
>
>> Hi Narayan,
>>
>> If you don't mind, I'd love to know some details about your
>> implementation:
>>
>> What type of replication are you using?
>> How large is your Glance image repository and how many Glance servers are
>> you using?
>> Are you load balancing between Glance servers? And if so, what method?
>> (DNS rr?)
>> How much activity does your Glance service see?
>>
>> Thanks,
>> Joe
>>
>>
>>
>> On Mon, Mar 18, 2013 at 8:35 PM, Narayan Desai <narayan.desai at gmail.com>wrote:
>>
>>> We've happily been using glusterfs with N way replication for the last
>>> year for this, with no problems.
>>>  -nld
>>>
>>>
>>> On Mon, Mar 18, 2013 at 5:12 PM, Ahmad Ahmadi <ahmadidamha at yahoo.com>wrote:
>>>
>>>> Hi,
>>>>
>>>> How can I have multiple glance nodes in a way that, when I create an
>>>> image from the controler, it would be coppied to all of the glance nodes?
>>>> Now, when I define multiple glance endpoints in the controler
>>>> (keystone), the images would only go to the first glance node.
>>>>
>>>> I also want to avoid putting the name of all glance nodes in the nova
>>>> nodes.
>>>>
>>>> Thank you,
>>>> Ad
>>>>
>>>> _______________________________________________
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>>>> OpenStack-operators at lists.openstack.org
>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>>>>
>>>>
>>>
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>>>
>>
>>
>> --
>> Joe Topjian
>> Systems Administrator
>> Cybera Inc.
>>
>> www.cybera.ca
>>
>> Cybera is a not-for-profit organization that works to spur and support
>> innovation, for the economic benefit of Alberta, through the use
>> of cyberinfrastructure.
>>
>> _______________________________________________
>> OpenStack-operators mailing list
>> OpenStack-operators at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>>
>>
>


-- 
Joe Topjian
Systems Administrator
Cybera Inc.

www.cybera.ca

Cybera is a not-for-profit organization that works to spur and support
innovation, for the economic benefit of Alberta, through the use
of cyberinfrastructure.
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