neutron

Failed to create network or port with dns_domain parameter

Bug #1887163 reported by Slawek Kaplonski
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
neutron
Confirmed
Medium
Unassigned

Bug Description

When I had enabled in ML2 extension drivers: "subnet_dns_publish_fixed_ip" and "dns" then I wasn't able to create network or port with dns-domain attribute.

Creation of network:

neutron net-create test-net-1 --dns-domain test.domain.
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
Failed to create a duplicate NetworkDNSDomain: for attribute(s) ['PRIMARY'] with value(s) 26cd2031-e611-4c4c-b07d-cff23d12a952
Neutron server returns request_ids: ['req-abb4798b-f79a-472d-b936-ae8edcccfb6d']

And the result in the server logs: http://paste.openstack.org/show/795750/

Creation of port:

neutron port-create test-net-1 --dns-domain test.domain.
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
Failed to create a duplicate PortDNS: for attribute(s) ['PRIMARY'] with value(s) 1d7544bd-3a16-4c0f-b67f-af99db6069a5
Neutron server returns request_ids: ['req-5db9dab8-7800-4e61-8fd7-72149861bd25']

And the result in the server logs: http://paste.openstack.org/show/795751/

Creation of port or network without dns-domain and then setting it via PUT request works fine.

When I have only one of those 2 extensions enabled, all works fine also.

Tags: dns ml2
Revision history for this message
Dr. Jens Harbott (j-harbott) wrote :

It is an error to have two of the dns extensions enabled at the same time, only enable the one that has all the features that you need, in this case subnet_dns_publish_fixed_ip, this will include the dns extension automatically. I had the similar issue while developing the extenstion but after discussing with mlavalle about how this could be handled, the solution was to only have one of them active at a time.

Revision history for this message
Maciej Jozefczyk (maciejjozefczyk) wrote :

I can confirm this particular issue. I remember having the same, while two DNS extensions were enabled on same time trying to add same value withing same API operation to the DB.

Revision history for this message
Rodolfo Alonso (rodolfo-alonso-hernandez) wrote :

Hello:

IMO, we can:
- Include a note in both API docs.
- We can implement a mechanism to, according to the extension configuration, supersede a previous loaded extension. In this case, for example, "subnet-dns-publish-fixed-ip" will supersede "dns".
- Make inherited methods from SubnetDNSPublishFixedIPExtensionDriver re-entrant. But personally I don't like this idea and I think the second option is cleaner.

Regards.

Slawek Kaplonski (slaweq)
tags: added: ml2
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