external-dns.alpha.kubernetes.io/hostname

alpha.kubernetes.io, external-dns.alpha.kubernetes.io, node.alpha.kubernetes.io/ttl

kubernetes.io: ( app | ingress | kubectl | bootstrap | beta | role | pv | annotations | topology ), k8s.io, kubernetes.io/ [ /tls | /ingress.class | /pvc-protection | /enforce-mountable-secrets | /dockerconfigjson ]