Bug 2024055

Summary: External DNS added extra prefix for the TXT record
Product: OpenShift Container Platform Reporter: Hongan Li <hongli>
Component: NetworkingAssignee: aos-network-edge-staff <aos-network-edge-staff>
Networking sub component: DNS QA Contact: Hongan Li <hongli>
Status: CLOSED ERRATA Docs Contact:
Severity: medium    
Priority: high CC: alebedev, aos-bugs, luzuccar, mmasters
Version: 4.10   
Target Milestone: ---   
Target Release: 4.10.0   
Hardware: Unspecified   
OS: Unspecified   
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Fixed In Version: Doc Type: No Doc Update
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Clone Of: Environment:
Last Closed: 2022-03-08 16:03:07 UTC Type: Bug
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Hongan Li 2021-11-17 07:18:56 UTC 
Description of problem:
When External DNS adding A and TXT record to the Google Cloud DNS, an extra prefix "external-dns-" is added to the TXT record and cause the inconsistency between A and TXT records. e.g.
external-dns-service-unsecure.example.com. TXT
service-unsecure.example.com.              A

OpenShift release version:
4.10.0-0.nightly-2021-11-15-034648

Cluster Platform:
GCP

How reproducible:
100%

Steps to Reproduce (in detail):
1. Install External DNS operator (see README.md of https://github.com/openshift/external-dns-operator/)
2. create secret and CR externaldns sample-gcp
3. create pod,svc
4. oc annotate svc <svc_name> external-dns.mydomain.org/publish="yes"
5. check the Google Cloud DNS and logs of externaldns pod

Actual results:
$ oc -n external-dns logs external-dns-sample-gcp-6d54d4bb99-cnxvd
<---snip--->
time="2021-11-16T10:13:38Z" level=info msg="Change zone: hongli-gc16-fv6sc-private-zone batch #0"
time="2021-11-16T10:13:38Z" level=info msg="Add records: external-dns-service-unsecure.hongli-gc16.qe.gcp.devcluster.openshift.com. TXT [\"heritage=external-dns,external-dns/owner=external-dns-sample-gcp,external-dns/resource=service/hongli/service-unsecure\"] 300"
time="2021-11-16T10:13:38Z" level=info msg="Add records: service-unsecure.hongli-gc16.qe.gcp.devcluster.openshift.com. A [172.30.205.231] 300"


Expected results:
should not add the prefix "external-dns-" to the TXT record, please keep the same name for the two kinds of records

Impact of the problem:
it might cause confusion

Additional info:
Tested with AWS Route 53 as well but didn't see the issue 


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Comment 3 Miciah Dashiel Butler Masters 2021-11-18 17:08:37 UTC 
Setting blocker+ because we don't want to ship the operator with this issue.
Comment 6 Hongan Li 2021-12-01 08:49:10 UTC 
tested with latest external-dns-operator on AWS, Azure and GCG and always can see the prefix "external-dns-" is added for TXT records.

According to Comment #4, now the behavior is the same on all the providers so I moving this to verified. Thanks.
Comment 10 errata-xmlrpc 2022-03-08 16:03:07 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Release of ExternalDNS Operator on OperatorHub), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2022:0781