Thanks a lot, but I am afraid I am missing something.
I have a project where the cores quota is 20.
This project has 2 users: 

[root@controller-01 ~]# openstack user list --project b4a1039f2f7c419596662950d8a1d397
+----------------------------------+------------------+
| ID                               | Name             |
+----------------------------------+------------------+
| ab573ba3ea014b778193b6922ffffe6d | sgaravat@infn.it |
| 27ae90b9f42547f094d8c899f23c31c2 | sgaraprj99       |
+----------------------------------+------------------+

and by default each user is given 20 cores as quota [*]:

I can decrease the cores quota for a specific user:

[root@controller-01 ~]# nova quota-update --user 27ae90b9f42547f094d8c899f23c31c2 --cores 2 b4a1039f2f7c419596662950d8a1d397

and this works: the project keeps having 20 cores but that user can instantiate at most 2 VCPUs


If I try the command you suggested:

 openstack quota set --cores 2 b4a1039f2f7c419596662950d8a1d397

it seems to me that the result is changing the quota (from 20 to 2) for the project, while I would like to keep having 20 cores for the project, and 2 cores for each user of that project

Thanks, Massimo




[*]
[root@controller-01 ~]# nova quota-show --tenant b4a1039f2f7c419596662950d8a1d397
+----------------------+-------+
| Quota                | Limit |
+----------------------+-------+
| instances            | 10    |
| cores                | 20    |
| ram                  | 20480 |
| metadata_items       | 128   |
| key_pairs            | 100   |
| server_groups        | 10    |
| server_group_members | 10    |
+----------------------+-------+
[root@controller-01 ~]# nova quota-show --tenant b4a1039f2f7c419596662950d8a1d397 --user ab573ba3ea014b778193b6922ffffe6d
+----------------------+-------+
| Quota                | Limit |
+----------------------+-------+
| instances            | 10    |
| cores                | 20    |
| ram                  | 20480 |
| metadata_items       | 128   |
| key_pairs            | 100   |
| server_groups        | 10    |
| server_group_members | 10    |
+----------------------+-------+

On Fri, Apr 17, 2020 at 4:23 PM melanie witt <melwittt@gmail.com> wrote:
On 4/17/20 07:01, Massimo Sgaravatto wrote:
> Hello
>
> As far as I understand by default each project user is given the quota
> of the whole project.
> Is it possible to set a different default quota for users of a certain
> project  ?
> And in general I'd like to be able to define different default values
> for different projects
>
> In:
>
> https://docs.openstack.org/nova/latest/admin/quotas.html
>
> it is explained how to update the quota for a specific project user, but
> I can't find how to set the default user quota for a given project

Hi, the steps for updating quota for a specific project are on the doc
you linked here:

https://docs.openstack.org/nova/latest/admin/quotas.html#view-and-update-quota-values-for-a-project-or-class

$ openstack quota set --QUOTA QUOTA_VALUE PROJECT

This will change the default quota for that project, so all existing
users in the project will get that quota and all future users in the
project will get that quota.

Note that the ability to set specific user quota [1] is planned to be
removed in a future release:

"User-specific quotas are legacy and will be removed when migration to
unified limits is complete. User-specific quotas were added as a way to
provide two-level hierarchical quotas and this feature is already being
offered in unified limits. For this reason, the below commands have not
and will not be ported to openstackclient."

Hope that helps.

-melanie

[1]
https://docs.openstack.org/nova/latest/admin/quotas.html#view-and-update-quota-values-for-a-project-user