BeryJu/gravity

Add support for external-dns integration

CygnusHyoga opened this issue · 6 comments

CygnusHyoga commented

It would be great to add gravity dns as an external-dns provider, to be able to automatically manage records for external kubernetes services.

External-dns project:
https://github.com/kubernetes-sigs/external-dns

Thanks.

CygnusHyoga commented

External-dns project support coredns integration with etcd (similar implementation of gravity).

https://github.com/kubernetes-sigs/external-dns/blob/master/docs/tutorials/coredns.md

It's posible this provider works with gravity? Thanks in advance.

CygnusHyoga commented

I tested without luck. I tried to add to external-dns helm chart:

env:
  - name: TZ
    value: Europe/Madrid
  - name: ETCD_URLS
    value: http://192.168.66.254:2380/gravity/
provider: coredns

extraArgs:
  - --source=service
  # - --source=ingress
  - --domain-filter=example.com

Error:

"level":"warn","ts":"2024-02-21T20:37:12.10568+0100","logger":"etcd-client","caller":"v3@v3.5.9/retry_interceptor.go:62","msg":"retrying of unary invoker failed","target":"etcd-endpoints://0xc000365880/192.168.66.254:2380/gravity/","attempt":0,"error":"rpc error: code = DeadlineExceeded desc = latest balancer error: last connection error: connection error: desc = \"error reading server preface: EOF\""}
time="2024-02-21T20:37:12+01:00" level=fatal msg="context deadline exceeded"

The etcd is working via http or https? The schema of coredns is standard or custom? Thanks.

BeryJu commented

While gravity uses etcd and can use CoreDNS as a handler for a zone, the way gravity uses etcd is not inspired by coredns and as such probably not compatible

CygnusHyoga commented

Thanks BeryJu for the response.

It would be great to add support for external-dns at some point, I think it is a factor that many people would be interested in.

CygnusHyoga commented

Maybe adding support for:

May fix problem for integration with third party tools like: acme certificates with dns01 validation like acme.sh, lego, certbot, etc, and tools like external-dns and others.

One benefits it's a standard and don't have to develop custom integration with this or other tools.