Open Stack

Three control plane nodes with one nova-cell can handle up to 3000-5000 vms
without any problems. But RabbitMQ and Nova need some tuning for
timeouts/limits to raise the defaults.


On Thu, Apr 6, 2023 at 3:31 AM Satish Patel <satish.txt at gmail.com> wrote:

> Hi Can,
>
> You are saying a single control plan can handle 600 compute nodes?
>
> On Wed, Apr 5, 2023 at 5:36 PM Can Özyurt <acozyurt at gmail.com> wrote:
>
>> It's totally okay to use regions as AZs if that's what you need,
>> unless you are planning to deploy in another city. Then you will be
>> already exhausting the term region and you will have been left with
>> much more to deal with. Ultimately it comes down to needs and future
>> plans.
>>
>> Secondly, I think you should be fine with a single cell anyway as we
>> have much more in one cell. However experience may vary depending on
>> the volume and characteristics of the daily workload and the design of
>> the control plane, so maybe you should take someone else's word with
>> more in-depth knowledge for the guidance.
>>
>> Cheers.
>>
>> On Wed, 5 Apr 2023 at 18:47, Satish Patel <satish.txt at gmail.com> wrote:
>> >
>> > Folks,
>> >
>> > This is a very broad question and could have many answers but still
>> wanted to ask to see what people are thinking and doing.
>> >
>> > We have DC with multiple racks and around 600 nodes so we are planning
>> to create 3 private openstack and each with 200 nodes. In other data
>> centers we have multiple 200 nodes openstack clusters and life is good. In
>> the new datacenter I am thinking of deploying the same way openstack but
>> shared keystone between multiple openstack environments to have a single
>> place for identification and I am going to call it 3 regions even it's in a
>> single DC. Hope shared keystone is helpful/easier for doing terrafrom work
>> and selecting region easily.
>> >
>> > Other option I was thinking about to deploy cellv2 technology and put
>> all 600 nodes in single cloud but always worried for operation point of
>> view. Now sure how many people running cellv2 successfully without pain.
>> (Except CERN)
>> >
>> > If people running multi-region openstack cloud then please share some
>> thought and idea to make life easier. Not looking for best solution but
>> just clue to get idea to deploy and manage multiple openstack.
>> >
>> > Thanks in advance.
>> > S
>> >
>> >
>>
>

-- 
Regards,
Maksim Malchuk
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