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Mario,

If I remember right I had a similar issue with getting image_props when I
was doing this to pull in custom properties. Through some trial and error
and poking around with pdb I ended up with this:

        image_props = spec_obj.get('request_spec', {}).\
            get('image', {}).get('properties', {})

Perhaps that will help?  If not I'd recommend putting a pdb break at the
top of host_passes and digging through the spec_obj.


On Thu, Nov 10, 2016 at 12:05 AM, Keller, Mario <Mario.Keller at cornelsen.de>
wrote:

> Hello,
>
> we are trying to build our own nova scheduler filter to separate machines
> to different compute nodes / host aggregates.
> Our setup is based on OpenStack Mitaka and we are using VMware as
> hypervisor on 3 different compute nodes.
>
> We have created a /etc/glance/metadefs/CV_AggSelect.json file to define
> the new property "os_selectagg"
>
> {
>     "namespace": "OS::Compute::cv-host-agg",
>     "display_name": "CV-CUSTOM: Select Host Aggregate",
>     "description": "Cornelsen CUSTOM: Select Host Aggregate",
>     "visibility": "public",
>     "protected": true,
>     "resource_type_associations": [
>         {
>             "name": "OS::Glance::Image"
>         },
>         {
>             "name": "OS::Nova::Aggregate"
>         }
>     ],
>         "properties": {
>             "os_selectagg": {
>                 "title": "selectagg",
>                 "description": "Cornelsen CUSTOM: Select Host Aggregate",
>                 "type": "string",
>                 "enum": [
>                     "windows",
>                     "linux",
>                     "desktop",
>                     "test1",
>                     "test2"
>                 ],
>                 "default" : "test2"
>         }
>     },
>     "objects": []
> }
>
>
> Getting the details from our image and the host aggregate we see that the
> property is set correctly:
>
> openstack image show e62da4df-318f-48dc-be26-b634e82ec4a1
> +------------------+----------------------------------------
> ------------------------------------------------------------
> ------------------------------+
> | Field            | Value
>
> |
> +------------------+----------------------------------------
> ------------------------------------------------------------
> ------------------------------+
> ...
> | properties       | description='', hw_vif_model='VirtualVmxnet3',
> hypervisor_type='vmware', os_selectagg='windows',            |
> |                  | vmware_adaptertype='lsiLogicsas',
> vmware_disktype='preallocated', vmware_ostype='windows9Server64Guest
> ...
>
> We also see the property in the aggregate:
>
> openstack aggregate show 5
> +-------------------+--------------------------------------------------+
> | Field             | Value                                            |
> +-------------------+--------------------------------------------------+
> ...
> | properties        | hypervisor_type='vmware', os_selectagg='windows' |
> ..
>
> I have created a new simple filter in /usr/lib/python2.7/site-
> packages/nova/scheduler/filters  just to see what properties are set for
> the current image and the host_state.
> The filter is also set in the  /etc/nova/nova.conf and is executed,
> because I'm getting the logfile that ist created by the filter.
>
> The filter only implements the " def host_passes(self, host_state,
> spec_obj)" function.
>
> I'm getting the image properties by " image_props =
> spec_obj.image.properties if spec_obj.image else {} ", but the property
> "os_selectagg" is missing. All other properties like
> hw_vif_model='VirtualVmxnet3' are set.
>
> The property is set in the host_state.aggregates list, but not in the
> spec_obj.image.properties. What do we miss?
>
> With best regards,
> Mario Keller.
>
>
>
> Mit freundlichen Grüßen
> Mario Keller
> IT-Operations Engineer
>
> --
> Cornelsen Verlag GmbH, Mecklenburgische Straße 53, 14197 Berlin
> Tel: +49 30 897 85-8364, Fax: +49 30 897 85-97-8364
> E-Mail: mario.keller at cornelsen.de | cornelsen.de
>
> AG Charlottenburg, HRB 114796 B
> Geschäftsführung: Dr. Anja Hagen, Joachim Herbst, Mark van Mierle
> (Vorsitz),
> Patrick Neiss, Michael von Smolinski, Frank Thalhofer
>
>
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