Open Stack

On Sep 2, 2016 09:39, "rezroo" <openstack at roodsari.us> wrote:
>
> Hello - I'm using Liberty release devstack for the below scenario. I have
created project "abcd" with "john" as Member. I've launched one instance, I
can use curl to list the instance. No problem.
>
> I then modify /etc/nova/policy.json and redefine "admin_or_owner" as
follows:
>
>     "admin_or_owner":  "role:admin or is_admin:True or
project_id:%(project_id)s",
>
> My expectation was that I would be able to list the instance in abcd
using a token of admin. However, when I use the token of user "admin" in
project "admin" to list the instances I get the following error:
>
> stack at vlab:~/token$ curl
http://localhost:8774/v2.1/378a4b9e0b594c24a8a753cfa40ecc14/servers/detail
-H "User-Agent: python-novaclient" -H "Accept: application/json" -H
"X-OpenStack-Nova-API-Version: 2.6" -H "X-Auth-Token:
f221164cd9b44da6beec70d6e1f3382f"
> {"badRequest": {"message": "Malformed request URL: URL's project_id
'378a4b9e0b594c24a8a753cfa40ecc14' doesn't match Context's project_id
'f73175d9cc8b4fb58ad22021f03bfef5'", "code": 400}}
>
> 378a4b9e0b594c24a8a753cfa40ecc14 is project id of abcd and
f73175d9cc8b4fb58ad22021f03bfef5 is project id of admin.
>
> I'm confused by this behavior and the reported error, because if the
project id used to acquire the token is the same as the project id in
/servers/detail then I would be an "owner". So where is the "admin" in
"admin_or_owner"? Shouldn't the "role:admin" allow me to do whatever
functionality "rule:admin_or_owner" allows in policy.json, regardless of
the project id used to acquire the token?
>
> I do understand that I can use the admin user and project to get all
instances of all tenants:
> curl
http://localhost:8774/v2.1/f73175d9cc8b4fb58ad22021f03bfef5/servers/detail?all_tenants=1
-H "User-Agent: python-novaclient" -H "Accept: application/json" -H
"X-OpenStack-Nova-API-Version: 2.6" -H "X-Auth-Token: $1"
>
> My question is more centered around why nova has the additional check to
make sure that the token project id matches the url project id - and
whether this is a keystone requirement, or only nova/cinder and programs
that have a project-id in their API choose to do this. In other words, is
it the developers of each project that decide to only expose some APIs for
administrative functionality (such all-tenants), but restrict everything
else to owners, or keystone requires this check?
>
> Thanks,
>
> Reza
>
>
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>

I believe this is a nova specific extra check. There is (iirc) a way to
list out the instances for a given tenant but I do not recall the
specifics.

Keystone does not know anything about the resource ownership in Nova. The
Nova check is fully self-contained.

--Morgan
Please excuse brevity and typos, sent from a mobile device.
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