The DNS Integration in the ML2 drivers generates exception LOG entries whenever dns_exc.DNSDomainNotFound and dns_exc.DuplicateRecordSet are triggered on the creation or deletion of DNS records. These exceptions occur if a duplicate record set is found or if the DNS domain is not located.
The exceptions serve to alert the administrators that there was an issue with the record set's creation. However, I believe a warning would be sufficiently informative for the administrators to recognize that something did not proceed as anticipated, which would prevent stack traces in the logs. An error could also serve this purpose, but I think a warning is more suitable since the system remains operational when the exceptions are caught within Neutron.
Example stack trace of a duplicate record set: https://jhcsmedia.com/?f=stack_trace_neutron_900212.txt
The stack traces comes from our deployment which runs version 2023.1 deployed with Kolla-Ansible. We use OpenStack Designate as our DNS driver.
I have already submitted a review to modify the exceptions to warnings, which also eliminates the catching of dns_exc.DuplicateRecordSet when removing DNS records. This change is based on the premise that duplicate record sets should not exist initially. https://review.opendev.org/c/openstack/neutron/+/900212
Reviewed: https:/
Committed: https:/
Submitter: "Zuul (22348)"
Branch: master
commit 5fe5188ce513c92
Author: Jayce Houtman <email address hidden>
Date: Mon Nov 6 17:23:44 2023 +0100
Change exception messages to error log messages for DNS integration.
Change non-harmful stack trace errors for dns_exc.
dns_
from filling with stack traces where error messages would have been
sufficient enough.
Closes-Bug: #2042925
Change-Id: Icf1fff28bb560c