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Set ipv6 nameservers on aws 

AWS now provides ipv6 DNS server endpoint at a fixed address (rather than ipv4, which depends on the VPC CIDR block). This isn't provided in dhcp, and anyways we want to ensure we use this endpoint in ipv6 mode and not have ipv4 in the mix.
This commit is contained in:
Ole Markus With 2021-09-03 09:47:37 +02:00
parent c7eb08c76f
commit c390d45f76
1 changed files with 6 additions and 0 deletions
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6
pkg/model/components/kubedns.go
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@ -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{}