Need to set MX record with external-dns-management

[kaelzhan]

What would you like to be added:
Now I can't create MX record with external-dns-management. And I need to set MX record for our k8s cluster with it.

Why is this needed:
I need to receive emails in my k8s cluster. So we need create MX record with external-dns-management.

[MartinWeindel]

If it is important for you, feel free to add a pull request.

[carlsoane]

Hi @MartinWeindel:
I work with Kael. I'm looking at adding the MX Record enhancement. I was wondering if you or someone else who has worked on this area of the code might have some pointers you could share. So far I've just gotten my environment working and taken a quick look through the controller code. Initially, I'm interested in adding MX Record support for AWS.
Thanks

[MartinWeindel]

@carlsoane
You need to

• extend the DNSEntry spec and status for a record type field: https://github.com/gardener/external-dns-management/blob/master/pkg/apis/dns/v1alpha1/dnsentry.go#L61
• add the new record type:

  external-dns-management/pkg/dns/records.go

  Line 27 in 59f5745

  const RS_TXT = "TXT"

  , handling should be similar to RS_TXT
• implement it for all DNS providers, e.g. starting with AWS: https://github.com/gardener/external-dns-management/blob/master/pkg/controller/provider/aws/handler.go#L213
• extend integration and functional tests

[carlsoane]

@MartinWeindel: Perfect. Thanks.