Hi, 

Thanks for the answer. But in fact I am using the /os-simple-tenant-usage API as an admin so I'd really expected it to list all projects/tenants like Horizon does... I'm surely missing something but not clear what... 

Best regards, 

so the openstack client is calling the nova simple tenant usage api

https://docs.openstack.org/python-openstackclient/latest/cli/command-objects/usage.html#usage-list

maps to 

https://docs.openstack.org/api-ref/compute/#show-usage-statistics-for-tenant

the openstack client does not have a --all-tenants flag or simplar to call 

https://docs.openstack.org/api-ref/compute/#list-tenant-usage-statistics-for-all-tenants

so the difference is the openstack client uses

/os-simple-tenant-usage/{tenant_id} which is aviabel to anyone with the member or reader role in a given project

the all tenats version is /os-simple-tenant-usage

and that endpoint is admin only.

osc has only ever support the tenant specific version so if you wantted to supprot the admin version

you would need to modify osc to add a --all-tenant option to the cli.

horizon presumably support the multi tenant view as an admin usign the /os-simple-tenant-usage endpoint.

On Tue, 2023-11-28 at 18:47 +0100, Michel Jouvin wrote:

Hi,

I've been struggling today to understand the problem. I wrote a (Python) 

script that uses directly the API instead of going through the 

"openstack usage list". I had some hope of something related to the 

limit parameter but unfortunately it is not the case and the result 

using the API is the same as using the openstack client. Only horizon 

returns all the information.

Does somebody has any clue about what is done differently by Horizon 

compared to the openstack client (I assume it is using the API rather 

than the client)?

Any input would be very much appreciated as going month by month (we 

need a month-level detail) through the dashboard is not very sustainable 

and potentially very error prone...

Best regards,

Michel

Le 27/11/2023 à 18:39, Michel Jouvin a écrit :

Hi,

We are using "openstack usage list" to follow resource usage by 

projects at our cloud. We recently discovered that ~1/3 of the 

resource consumed (mostly "big projects") are missing from the 

JSON/CSV produced where the Admin Overview menu in the Horizon 

dashboard displays everything. Is there a trivial reason for this?

We tried both with a pretty old openstackclient (5.8) and the last one 

after applying the patch in 

https://github.com/openstack/python-openstackclient/commit/30462f57d48162d15f8e4e575c49504c619d657c 

to fix the problem with date conversion. The result is the same.

Thank you in advance for any help. Cheers,

Michel