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kubernetes-sigs / external-dns

Configure external DNS servers (AWS Route53, Google CloudDNS and others) for Kubernetes Ingresses and Services
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Support additional routing alias Route53 records #2030

Open 2rs2ts opened 3 years ago

2rs2ts commented 3 years ago

What would you like to be added: An annotation called external-dns.alpha.kubernetes.io/routing-alias (or something like that) which lets you set an additional alias record that points to the record created in external-dns.alpha.kubernetes.io/hostname.

An example of a service with a latency-based rrset, where the "main" URL is myservice.mydomain.com but you would be able to reach a particular deployment of it at myservice-<region>.mydomain.com:

external-dns.alpha.kubernetes.io/hostname: myservice.mydomain.com
external-dns.alpha.kubernetes.io/routing-alias: myservice-<region>.mydomain.com
external-dns.alpha.kubernetes.io/set-identifier: myservice-<region>
external-dns.alpha.kubernetes.io/aws-region: <region>

Why is this needed: For many multi-region services at my company, we like to have region-specific records to use for testing specific regions' deployments, but our clients talk to a "main" URL that uses latency-based routing to redirect to the closest region. Of course, we could just use the auto-generated DNS names for the ELBs, but that requires looking up the names with kubectl. So right now we have external-dns create a simple alias record for the ELB and then we create the rrset out of band. Adding this feature would mean we would not have to create the rrset out of band.

rektide commented 3 years ago

powerdns has ALIAS records as well. would love support for this feature. critical for anyone hosting mail.

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Send feedback to sig-contributor-experience at kubernetes/community. /lifecycle stale

2rs2ts commented 3 years ago

/remove-lifecycle stale

this bot is so annoying

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/lifecycle stale

2rs2ts commented 2 years ago

/remove-lifecycle stale

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/lifecycle stale

2rs2ts commented 2 years ago

/remove-lifecycle stale

sushantkumar12 commented 2 years ago

@2rs2ts : I am trying to test a similar setup for my apps in AWS east and west, through our current EKS module(ingress and external DNS) setup we are creating region-specific route 53 records pointing to the east and west alb. When I am trying to set up latency based on routing (for testing now but we want other routing policies working as well) when I am passing the below annotations in the ingress as below.

external-dns.alpha.kubernetes.io/hostname: myservice.mydomain.com
external-dns.alpha.kubernetes.io/routing-alias: myservice-<region>.mydomain.com
external-dns.alpha.kubernetes.io/set-identifier: myservice-<region>
external-dns.alpha.kubernetes.io/aws-region: <region>

It keeps on failing with the error message below.

level":"error","msg":"InvalidChangeBatch: [RRSet with DNS name myservice-use1.aws.dshrp.com., type A, SetIdentifier myservice-use1, and Region Name=us-east-1 cannot be created because a non-latency RRSet with the same name and type already exists., RRSet with DNS name myservice-use1.aws.dshrp.com.

Just to make it work I manually tried to delete the route 53 record set myservice-use1.aws.dshrp.com( A record and TXT) record but It is not creating the deeleted route-53 records. When I clean up all the above annotations everything is backup and running, but I am not able to make it work with any kind of routing policies.

2rs2ts commented 2 years ago

@sushantkumar12 I'm confused by your comment. To be clear, this github issue is a feature request–the thing you tried doesn't exist yet. Please upvote the issue, and hopefully it will get prioritized sooner!

sushantkumar12 commented 2 years ago

@2rs2ts Yes, I realized later, I somehow thought looking through multiple posts/issues that it worked for you. From AWS documentation this seems like the feature is available. https://github.com/kubernetes-sigs/external-dns/blob/master/docs/tutorials/aws.md#routing-policies

2rs2ts commented 2 years ago

I'm still not following you there. The docs you linked are external-dns' docs, and they still do not include my feature request here. Is it possible you are just talking about the set-identifier? That feature works well, but for me, it is not enough for a complete solution.

sushantkumar12 commented 2 years ago

No, I am not talking about set-identifier, I am talking about Routing policies the same as you, I have a similar use case as yours, where I want to route top-level DNS records between east and west DNS records based on different Routing policies mentioned in above doc.

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2rs2ts commented 2 years ago

/remove-lifecycle stale

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/lifecycle stale

2rs2ts commented 1 year ago

/remove-lifecycle stale

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/lifecycle stale

2rs2ts commented 1 year ago

/remove-lifecycle stale

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/lifecycle stale

2rs2ts commented 1 year ago

/remove-lifecycle stale

szuecs commented 1 year ago

/triage priority/backlog

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@szuecs: The label(s) triage/priority/backlog cannot be applied, because the repository doesn't have them.

In response to [this](https://github.com/kubernetes-sigs/external-dns/issues/2030#issuecomment-1508337822): >/triage priority/backlog Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.
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/lifecycle stale

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hgontijo commented 6 months ago

/remove-lifecycle rotten

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2rs2ts commented 3 months ago

/remove-lifecycle stale

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