Merge pull request #12259 from olemarkus/ipv6-nameserver

Set ipv6 nameservers on aws
kubernetes · Sep 3, 2021 · ca26d43 · ca26d43
2 parents 600e942 + c390d45
commit ca26d43
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/pkg/model/components/kubedns.go b/pkg/model/components/kubedns.go
@@ -75,6 +75,12 @@ func (b *KubeDnsOptionsBuilder) BuildOptions(o interface{}) error {
 		clusterSpec.KubeDNS.MemoryLimit = &defaultMemoryLimit
 	}
 
+	if clusterSpec.IsIPv6Only() && kops.CloudProviderID(clusterSpec.CloudProvider) == kops.CloudProviderAWS {
+		if len(clusterSpec.KubeDNS.UpstreamNameservers) == 0 {
+			clusterSpec.KubeDNS.UpstreamNameservers = []string{"fd00:ec2::253"}
+		}
+	}
+
 	nodeLocalDNS := clusterSpec.KubeDNS.NodeLocalDNS
 	if nodeLocalDNS == nil {
 		nodeLocalDNS = &kops.NodeLocalDNSConfig{}