Open Stack

Hi

I want to partition my OpenStack cloud so that:

- Project p1, p2, .., pn can use only compute nodes C1, C2, ... Cx
- Projects pn+1.. pm can use only compute nodes Cx+1 ... Cy

I read that CERN addressed this use case implementing the
ProjectsToAggregateFilter but, as far as I understand, this in-house
developments eventually wasn't pushed upstream.

So I am trying to rely on the  AggregateMultiTenancyIsolation filter to
create  2 host aggregates:

- the first one including C1, C2, ... Cx and with filter_tenant_id=p1, p2,
.., pn
- the second one including Cx+1 ... Cy and with filter_tenant_id=pn+1.. pm


But if I try to specify the long list of projects, I get:a "Value ... is
too long" error message [*].

I can see two workarounds for this problem:

1) Create an host aggregate per project:

HA1 including CA1, C2, ... Cx and with filter_tenant_id=p1
HA2 including CA1, C2, ... Cx and with filter_tenant_id=p2
etc

2) Use the AggregateInstanceExtraSpecsFilter, creating two aggregates and
having each flavor visible only by a set of projects, and tagged with a
specific string that should match the value specified in the correspondent
host aggregate

Is this correct ? Can you see better options ?

Thanks, Massimo



[*]
# nova aggregate-set-metadata 1
filter_tenant_id=ee1865a76440481cbcff08544c7d580a,1c63ef80901b46bebc9e1e8e10d85019,a22db12575694c9e9f8650dde73ef565,b4a1039f2f7c419596662950d8a1d397,d8ce7a449d8e4d68bbf2c40314da357e,e81df4c0b493439abb8b85bfd4cbe071,ee1865a76440481cbcff08544c7d580a,29d6233c0b2741e2a30324079f05aa9f,2b92483138dc4a61b1133c8c177ff298
ERROR (BadRequest): Invalid input for field/attribute filter_tenant_id.
Value:
ee1865a76440481cbcff08544c7d580a,1c63ef80901b46bebc9e1e8e10d85019,a22db12575694c9e9f8650dde73ef565,b4a1039f2f7c419596662950d8a1d397,d8ce7a449d8e4d68bbf2c40314da357e,e81df4c0b493439abb8b85bfd4cbe071,ee1865a76440481cbcff08544c7d580a,29d6233c0b2741e2a30324079f05aa9f,2b92483138dc4a61b1133c8c177ff298.
u'ee1865a76440481cbcff08544c7d580a,1c63ef80901b46bebc9e1e8e10d85019,a22db12575694c9e9f8650dde73ef565,b4a1039f2f7c419596662950d8a1d397,d8ce7a449d8e4d68bbf2c40314da357e,e81df4c0b493439abb8b85bfd4cbe071,ee1865a76440481cbcff08544c7d580a,29d6233c0b2741e2a30324079f05aa9f,2b92483138dc4a61b1133c8c177ff298'
is too long (HTTP 400) (Request-ID:
req-b971d686-72e5-4c54-aaa1-fef5eb7c7001)
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