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dan.simone@oracle.com 2021-01-04 15:39:56 -08:00
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@ -57,9 +57,7 @@ Services exposed via `type=LoadBalancer`, `type=ExternalName` and for the hostna
There are three sources of information for ExternalDNS to decide on DNS name. ExternalDNS will pick one in order as listed below:
1. For ingress objects ExternalDNS will create a DNS record based on the host specified for the ingress object. For services ExternalDNS will look for the annotation `external-dns.alpha.kubernetes.io/hostname` on the service and use the loadbalancer IP, it also will look for the annotation `external-dns.alpha.kubernetes.io/internal-hostname` on the service and use the service IP.
1. For ingress objects ExternalDNS will create a DNS record based on the hosts specified for the ingress object, as well as the `external-dns.alpha.kubernetes.io/hostname` annotation. For services ExternalDNS will look for the annotation `external-dns.alpha.kubernetes.io/hostname` on the service and use the corresponding value.
1. For ingress objects ExternalDNS will create a DNS record based on the hosts specified for the ingress object, as well as the `external-dns.alpha.kubernetes.io/hostname` annotation. For services ExternalDNS will look for the annotation `external-dns.alpha.kubernetes.io/hostname` on the service and use the loadbalancer IP, it also will look for the annotation `external-dns.alpha.kubernetes.io/internal-hostname` on the service and use the service IP.
- For ingresses, you can optionally force ExternalDNS to create records based on _either_ the hosts specified or the `external-dns.alpha.kubernetes.io/hostname` annotation. This behavior is controlled by
setting the `external-dns.alpha.kubernetes.io/ingress-hostname-source` annotation on that ingress to either `defined-hosts-only` or `annotation-only`.