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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.

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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