Wildcard records are not created with --registry txt

[CraigGardener]

When --registry txt is set, wildcard record creation fails as the TXT record is invalid.

With registry set to noop, the wildcard record is created successfully.

a-*.example.com is not a valid hostname for which to create record.

Perhaps we could look at replacing * with a string such as external-dns-wildcard for the records?

I am using PowerDNS and the logs from external-dns are as follows:

time="2022-09-17T19:24:55Z" level=error msg="Unable to patch zone. Status: 422 Unprocessable Entity, Body: {\"error\": \"Name 'a-*.pages.example.demosubdomain.com.' contains unsupported characters\"}"

[chrigl]

Hey @CraigGardener. There is a flag --txt-wildcard-replacement on external-dns. I think that might be what you need. However, I think we could have a discussion to set a sane default, since most providers would reject an asterisk.

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/lifecycle rotten

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/close not-planned

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@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

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The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

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/close not-planned

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