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>Dev lessons learned: we need to validate better our inputs and refuse to
update a tenant-id that does not exist.

This is something that has come up in Neutron discussions before. There are
two issues here:
1. Performance: it will require a round-trip to Keystone on every request.
2. If the Neutron keystone user in unprivileged and the request context is
unprivileged, we might not actually be allowed to tell if the tenant exists.

The first we can deal with, but the second is going to be an issue that we
might not be able to get around.

How about as a temporary solution, we just confirm that the input is a UUID
so names don't get used?

On Wed, Jul 29, 2015 at 10:19 PM, Bruno L <teolupus.ext at gmail.com> wrote:

> This is probably affecting other people as well, so hopefully message will
> avoid some headaches.
>
> [nova,cinder,neutron] will allow you to do a quota-update using the
> tenant-name (instead of tenant-id). They will also allow you to do a
> quota-show tenant-name and get the expected values back.
>
> Then you go to the tenant and end up surprised that the quotas have not
> been applied and you can still do things you were not supposed to.
>
> It turns out that [nova,cinder,neutron] just created an entry on the quota
> table, inserting the tenant-name on the tenant-id field.
>
> "Surprise, surprise!"
>
> Ops lessons learned: use the tenant-id!
>
> Dev lessons learned: we need to validate better our inputs and refuse to
> update a tenant-id that does not exist.
>
> I have documented this behaviour on
> https://bugs.launchpad.net/neutron/+bug/1399065 and
> https://bugs.launchpad.net/neutron/+bug/1317515. I can reproduce it in
> IceHouse.
>
> Could someone please confirm if this is still the case on master? If not,
> which version of OpenStack addressed that?
>
> Thanks,
> Bruno
>
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>


-- 
Kevin Benton
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