No access to External DNS metrics outside the pod

[nlamirault]

What happened:

Hi, I deploy External-DNS using the official helm charts. It uses the Cloudflare provider. All seems working (DNS record, controller, .... ) except retrieving metrics using the ServiceMonitor. I've got this error:

Get "http://10.0.4.199:7979/metrics": read tcp 10.0.0.129:55492->10.0.4.199:7979: read: connection reset by peer

If I try to retrieve metrics using port-forward on the Service, it works. Port-forward on the pod, it works. But if I try to retrieve metrics from other pods inside the cluster it doesn't work. wget 10.0.4.199:7979/metrics failed.
It is due to the bind address localhost in the pod and not 0.0.0.0 ... but I don't find any argument for that.

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?:

Environment:

• External-DNS version (use external-dns --version):
• DNS provider:
• Others:

[k0da]

@nlamirault
I run netshoot pod in the same namespace and I'm able to access metrics:

curl http://external-dns-nonprod-external-dns:7979/metrics
# HELP external_dns_controller_last_reconcile_timestamp_seconds Timestamp of last attempted sync with the DNS provider
# TYPE external_dns_controller_last_reconcile_timestamp_seconds gauge