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Hello guys,

I can control my logic that will separating AZ to Cinder for each
Department by using
@Alan Bishop <abishop at redhat.com>  method, but we need create a new volume
and adding metadata as key="RESKEY:availability_zones" and value="az_name";
and key="volume_backend_name" and value="your backend in AZ"

Thanks All for helping.

Nguyen Huu Khoi



On Wed, Jan 4, 2023 at 11:32 PM Nguyễn Hữu Khôi <nguyenhuukhoinw at gmail.com>
wrote:

> Thanks, I'll check them out.
>
> On Wed, Jan 4, 2023, 8:51 PM Alan Bishop <abishop at redhat.com> wrote:
>
>>
>>
>> On Wed, Jan 4, 2023 at 1:09 AM Sa Pham <saphi070 at gmail.com> wrote:
>>
>>> You have to run cinder-volume service for each AZ. And in your
>>> configuration of cinder-volume you need to specify
>>> storage_availability_zone for that zone.
>>>
>>
>> Alternatively, you can run a single cinder-volume service with multiple
>> backends, and use the backend_availability_zone option [1] to specify each
>> backend's AZ. The backend_availability_zone overrides the
>> storage_availability_zone for that backend.
>>
>> [1]
>> https://github.com/openstack/cinder/blob/d55a004e524f752c228a4a7bda5d24d4223325de/cinder/volume/driver.py#L239
>>
>> Alan
>>
>>
>>> With nova-compute, you have to create a host aggregate with an
>>> availability zone option for these compute nodes.
>>>
>>>
>>>
>>> On Wed, Jan 4, 2023 at 3:42 PM Nguyễn Hữu Khôi <
>>> nguyenhuukhoinw at gmail.com> wrote:
>>>
>>>> Ok, thanks for the clarification. :)
>>>> Nguyen Huu Khoi
>>>>
>>>>
>>>> On Wed, Jan 4, 2023 at 3:03 PM Rajat Dhasmana <rdhasman at redhat.com>
>>>> wrote:
>>>>
>>>>>
>>>>>
>>>>> On Wed, Jan 4, 2023 at 1:01 PM Nguyễn Hữu Khôi <
>>>>> nguyenhuukhoinw at gmail.com> wrote:
>>>>>
>>>>>> Thanks for the answer.
>>>>>> But I cannot find the way to configure the storage backend per AZ,
>>>>>> Would you give me some suggestions?
>>>>>>
>>>>>
>>>>> It totally depends on the deployment method you're using. It could be
>>>>> either tripleo, ansible etc and every deployment method should provide a
>>>>> way to set an availability zone for a volume backend. I'm not a deployment
>>>>> expert but a specific deployment team needs to be consulted for the same.
>>>>>
>>>>>
>>>>>> Nguyen Huu Khoi
>>>>>>
>>>>>>
>>>>>> On Wed, Jan 4, 2023 at 1:53 PM Rajat Dhasmana <rdhasman at redhat.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> From the description, I'm assuming the instances will be boot from
>>>>>>> volume. In that case, you will need to create a volume type for each
>>>>>>> backend and you can use 'extra_specs' properties in the volume type to
>>>>>>> assign a volume type to a particular AZ. In this case, if you're already
>>>>>>> creating one backend per AZ then a volume type linked to that backend
>>>>>>> should be good.
>>>>>>> Now you will need to create a bootable volume and launch an instance
>>>>>>> with it. Again, the instance should be launched in the AZ as used in the
>>>>>>> volume type to support your use case.
>>>>>>> Also if you want to restrict volumes of a particular AZ to be
>>>>>>> attached to the instance of the same AZ, you can use the config option
>>>>>>> *cross_az_attach*[1] which will allow/disallow cross AZ attachments.
>>>>>>> Hope that helps.
>>>>>>>
>>>>>>> [1]
>>>>>>> https://docs.openstack.org/nova/latest/configuration/config.html#cinder.cross_az_attach
>>>>>>>
>>>>>>> Thanks
>>>>>>> Rajat Dhasmana
>>>>>>>
>>>>>>> On Wed, Jan 4, 2023 at 7:31 AM Nguyễn Hữu Khôi <
>>>>>>> nguyenhuukhoinw at gmail.com> wrote:
>>>>>>>
>>>>>>>> Hello guys.
>>>>>>>> I took time to search for this question but I can't find the answer.
>>>>>>>>
>>>>>>>> I have an Openstack private cloud and I use an  AZ to a department.
>>>>>>>> For example,
>>>>>>>> AZ-IT for IT department
>>>>>>>> AZ-Sale for Sale department...
>>>>>>>>
>>>>>>>> I will prepare 2 storage backends for each AZ.
>>>>>>>>
>>>>>>>> My goal is that when users launch an instance by choosing AZ then
>>>>>>>> It will use only the backend for this AZ.
>>>>>>>>
>>>>>>>> Would Openstack support my goal?
>>>>>>>>
>>>>>>>> Thanks for reading my email.
>>>>>>>>
>>>>>>>> Nguyen Huu Khoi
>>>>>>>>
>>>>>>>
>>>
>>> --
>>> Sa Pham Dang
>>> Skype: great_bn
>>> Phone/Telegram: 0986.849.582
>>>
>>>
>>>
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