remove _master_dns tag; we rely on DNS

upup/models/cloudup/_aws/master/_master_lb/master_lb.yaml

@@ -49,13 +49,10 @@ securityGroupRule/https-elb-to-master:
   toPort: 443
 
 
-{{ if HasTag "_master_dns" }}
-
 # Master name -> ELB
 dnsName/{{ .MasterPublicName }}:
   Zone: dnsZone/{{ .DNSZone }}
   ResourceType: "A"
   TargetLoadBalancer: loadBalancer/api.{{ ClusterName }}
 
-{{ end }}
 

upup/models/cloudup/pki/master

@@ -9,12 +9,3 @@ keypair/master:
     - "{{ .MasterPublicName }}"
     - "{{ .MasterInternalName }}"
     - "{{ WellKnownServiceIP 1 }}"
-{{ if not (HasTag "_master_dns") }}
-{{ if eq .CloudProvider "aws" }}
-  alternateNameTasks:
-    - elasticIP/kubernetes-master-{{ ClusterName }}
-{{ else if eq .CloudProvider "gce" }}
-  alternateNameTasks:
-    - ipAddress/kubernetes-master-{{ ClusterName }}
-{{ end }}
-{{ end }}

upup/pkg/fi/cloudup/tagbuilder.go

@@ -39,10 +39,6 @@ func buildCloudupTags(cluster *api.Cluster) (map[string]struct{}, error) {
 		tags["_not_master_lb"] = struct{}{}
 	}
 
-	if cluster.Spec.MasterPublicName != "" {
-		tags["_master_dns"] = struct{}{}
-	}
-
 	if fi.BoolValue(cluster.Spec.IsolateMasters) {
 		tags["_isolate_masters"] = struct{}{}
 	}