DNS rfc2136 msg="error in dns.Client.Exchange: illegal base64 data at input byte 24"

Rancher 2.x
1

Hallo,
has anyone an hint how to solve this error?
Thanks
Ralf

dns/owner=default,external-dns/resource=ingress/mongodb-replicaset/123""

time=“2019-12-24T10:00:16Z” level=info msg=“error in dns.Client.Exchange: illegal base64 data at input byte 24”

time=“2019-12-24T10:01:16Z” level=info msg=“Adding RR: 123.mongodb-replicaset.192.168.243.10.rancher.comline.local 0 A 192.168.243.10”

time=“2019-12-24T10:01:16Z” level=info msg=“error in dns.Client.Exchange: illegal base64 data at input byte 24”

time=“2019-12-24T10:01:16Z” level=info msg="Adding RR: 123.mongodb-replicaset.192.168.243.10.rancher.comline.local 0 TXT “heritage=external-dns,external-dns/owner=default,external-dns/resource=ingress/mongodb-replicaset/123"”

time=“2019-12-24T10:01:16Z” level=info msg=“error in dns.Client.Exchange: illegal base64 data at input byte 24”

time=“2019-12-24T10:02:16Z” level=info msg=“Adding RR: 123.mongodb-replicaset.192.168.243.10.rancher.comline.local 0 A 192.168.243.10”

time=“2019-12-24T10:02:16Z” level=info msg=“error in dns.Client.Exchange: illegal base64 data at input byte 24”

time=“2019-12-24T10:02:16Z” level=info msg="Adding RR: 123.mongodb-replicaset.192.168.243.10.rancher.comline.local 0 TXT “heritage=external-dns,external-dns/owner=default,external-dns/resource=ingress/mongodb-replicaset/123"”

time=“2019-12-24T10:02:16Z” level=info msg=“error in dns.Client.Exchange: illegal base64 data at input byte 24”

time=“2019-12-24T10:03:16Z” level=info msg=“Adding RR: 123.mongodb-replicaset.192.168.243.10.rancher.comline.local 0 A 192.168.243.10”

time=“2019-12-24T10:03:16Z” level=info msg=“error in dns.Client.Exchange: illegal base64 data at input byte 24”

time=“2019-12-24T10:03:16Z” level=info msg="Adding RR: 123.mongodb-replicaset.192.168.243.10.rancher.comline.local 0 TXT “heritage=external-dns,external-dns/owner=default,external-dns/resource=ingress/mongodb-replicaset/123"”

time=“2019-12-24T10:03:16Z” level=info msg=“error in dns.Client.Exchange: illegal base64 data at input byte 24”

2

As you didn’t include your external-dns configuration, I’ll just assume that you copied it from the github project docs.

You can solve it by changing the value of --rfc2136-tsig-secret to a base64 encoded string, or remove it altogether.