Many thks Matt.
If the issue will happen again 
I hope openstack commands will show duplicate entries and let me clean them.
When happened nova-hypervisor list command did not show duplcated entries but I saw them only in the database.
Regards
Ignazio 

Il giorno Gio 29 Nov 2018 17:28 Matt Riedemann <mriedemos@gmail.com> ha scritto:
On 11/29/2018 10:27 AM, Ignazio Cassano wrote:
> I did in the DB directly.
> I am using queens now.
> Any python client command to delete hold records or I must use api ?

You can use the CLI:

https://docs.openstack.org/python-novaclient/latest/cli/nova.html#nova-service-delete

https://docs.openstack.org/python-openstackclient/latest/cli/command-objects/compute-service.html#compute-service-delete

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Thanks,

Matt