mirror of
https://github.com/coredns/coredns.git
synced 2025-10-29 01:04:15 -04:00
222 lines
9.3 KiB
Go
222 lines
9.3 KiB
Go
package kubernetes
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import (
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"net"
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"strings"
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"testing"
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"github.com/coredns/coredns/plugin/transfer"
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"github.com/miekg/dns"
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)
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func TestKubernetesTransferNonAuthZone(t *testing.T) {
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k := New([]string{"cluster.local."})
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k.APIConn = &APIConnServeTest{}
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k.Namespaces = map[string]struct{}{"testns": {}, "kube-system": {}}
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k.localIPs = []net.IP{net.ParseIP("10.0.0.10")}
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dnsmsg := &dns.Msg{}
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dnsmsg.SetAxfr("example.com")
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_, err := k.Transfer("example.com", 0)
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if err != transfer.ErrNotAuthoritative {
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t.Error(err)
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}
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}
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func TestKubernetesAXFR(t *testing.T) {
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k := New([]string{"cluster.local."})
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k.APIConn = &APIConnServeTest{}
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k.Namespaces = map[string]struct{}{"testns": {}, "kube-system": {}}
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k.localIPs = []net.IP{net.ParseIP("10.0.0.10")}
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dnsmsg := &dns.Msg{}
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dnsmsg.SetAxfr(k.Zones[0])
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ch, err := k.Transfer(k.Zones[0], 0)
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if err != nil {
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t.Error(err)
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}
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validateAXFR(t, ch, false)
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}
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func TestKubernetesMultiClusterAXFR(t *testing.T) {
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k := New([]string{"cluster.local.", "clusterset.local."})
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k.opts.multiclusterZones = []string{"clusterset.local."}
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k.APIConn = &APIConnServeTest{}
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k.Namespaces = map[string]struct{}{"testns": {}, "kube-system": {}}
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k.localIPs = []net.IP{net.ParseIP("10.0.0.10")}
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dnsmsg := &dns.Msg{}
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dnsmsg.SetAxfr("clusterset.local.")
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ch, err := k.Transfer("clusterset.local.", 0)
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if err != nil {
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t.Error(err)
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}
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validateAXFR(t, ch, true)
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}
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func TestKubernetesIXFRFallback(t *testing.T) {
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k := New([]string{"cluster.local."})
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k.APIConn = &APIConnServeTest{}
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k.Namespaces = map[string]struct{}{"testns": {}, "kube-system": {}}
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k.localIPs = []net.IP{net.ParseIP("10.0.0.10")}
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dnsmsg := &dns.Msg{}
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dnsmsg.SetAxfr(k.Zones[0])
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ch, err := k.Transfer(k.Zones[0], 1)
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if err != nil {
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t.Error(err)
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}
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validateAXFR(t, ch, false)
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}
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func TestKubernetesIXFRCurrent(t *testing.T) {
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k := New([]string{"cluster.local."})
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k.APIConn = &APIConnServeTest{}
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k.Namespaces = map[string]struct{}{"testns": {}, "kube-system": {}}
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k.localIPs = []net.IP{net.ParseIP("10.0.0.10")}
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dnsmsg := &dns.Msg{}
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dnsmsg.SetAxfr(k.Zones[0])
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ch, err := k.Transfer(k.Zones[0], 3)
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if err != nil {
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t.Error(err)
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}
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var gotRRs []dns.RR
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for rrs := range ch {
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gotRRs = append(gotRRs, rrs...)
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}
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// ensure only one record is returned
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if len(gotRRs) > 1 {
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t.Errorf("Expected only one answer, got %d", len(gotRRs))
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}
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// Ensure first record is a SOA
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if gotRRs[0].Header().Rrtype != dns.TypeSOA {
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t.Error("Invalid transfer response, does not start with SOA record")
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}
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}
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func validateAXFR(t *testing.T, ch <-chan []dns.RR, multicluster bool) {
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t.Helper()
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xfr := []dns.RR{}
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for rrs := range ch {
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xfr = append(xfr, rrs...)
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}
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if xfr[0].Header().Rrtype != dns.TypeSOA {
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t.Error("Invalid transfer response, does not start with SOA record")
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}
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expected := expectedZone
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if multicluster {
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expected = expectedMultiClusterZone
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}
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zp := dns.NewZoneParser(strings.NewReader(expected), "", "")
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i := 0
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for rr, ok := zp.Next(); ok; rr, ok = zp.Next() {
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if !dns.IsDuplicate(rr, xfr[i]) {
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t.Fatalf("Record %d, expected\n%v\n, got\n%v", i, rr, xfr[i])
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}
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i++
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}
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if err := zp.Err(); err != nil {
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t.Fatal(err)
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}
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}
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const expectedZone = `
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cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 3 7200 1800 86400 5
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cluster.local. 5 IN NS ns.dns.cluster.local.
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ns.dns.cluster.local. 5 IN A 10.0.0.10
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external.testns.svc.cluster.local. 5 IN CNAME ext.interwebs.test.
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external-to-service.testns.svc.cluster.local. 5 IN CNAME svc1.testns.svc.cluster.local.
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hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.2
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172-0-0-2.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.2
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_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 172-0-0-2.hdls1.testns.svc.cluster.local.
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hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.3
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172-0-0-3.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.3
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_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 172-0-0-3.hdls1.testns.svc.cluster.local.
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hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.4
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dup-name.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.4
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_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 dup-name.hdls1.testns.svc.cluster.local.
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hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.5
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dup-name.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.5
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_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 dup-name.hdls1.testns.svc.cluster.local.
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hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::1
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5678-abcd--1.hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::1
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_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 5678-abcd--1.hdls1.testns.svc.cluster.local.
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hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::2
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5678-abcd--2.hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::2
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_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 5678-abcd--2.hdls1.testns.svc.cluster.local.
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hdlsprtls.testns.svc.cluster.local. 5 IN A 172.0.0.20
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172-0-0-20.hdlsprtls.testns.svc.cluster.local. 5 IN A 172.0.0.20
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kubedns.kube-system.svc.cluster.local. 5 IN A 10.0.0.10
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kubedns.kube-system.svc.cluster.local. 5 IN SRV 0 100 53 kubedns.kube-system.svc.cluster.local.
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_dns._udp.kubedns.kube-system.svc.cluster.local. 5 IN SRV 0 100 53 kubedns.kube-system.svc.cluster.local.
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svc-dual-stack.testns.svc.cluster.local. 5 IN A 10.0.0.3
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svc-dual-stack.testns.svc.cluster.local. 5 IN AAAA 10::3
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svc-dual-stack.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc-dual-stack.testns.svc.cluster.local.
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_http._tcp.svc-dual-stack.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc-dual-stack.testns.svc.cluster.local.
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svc1.testns.svc.cluster.local. 5 IN A 10.0.0.1
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svc1.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc1.testns.svc.cluster.local.
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_http._tcp.svc1.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc1.testns.svc.cluster.local.
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svc6.testns.svc.cluster.local. 5 IN AAAA 1234:abcd::1
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svc6.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc6.testns.svc.cluster.local.
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_http._tcp.svc6.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc6.testns.svc.cluster.local.
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svcempty.testns.svc.cluster.local. 5 IN A 10.0.0.1
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svcempty.testns.svc.cluster.local. 5 IN SRV 0 100 80 svcempty.testns.svc.cluster.local.
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_http._tcp.svcempty.testns.svc.cluster.local. 5 IN SRV 0 100 80 svcempty.testns.svc.cluster.local.
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cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 3 7200 1800 86400 5
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`
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const expectedMultiClusterZone = `
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clusterset.local. 5 IN SOA ns.dns.clusterset.local. hostmaster.clusterset.local. 3 7200 1800 86400 5
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clusterset.local. 5 IN NS ns.dns.clusterset.local.
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ns.dns.clusterset.local. 5 IN A 10.0.0.10
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hdls1.testns.svc.clusterset.local. 5 IN A 172.0.0.2
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172-0-0-2.hdls1.testns.svc.clusterset.local. 5 IN A 172.0.0.2
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_http._tcp.hdls1.testns.svc.clusterset.local. 5 IN SRV 0 16 80 172-0-0-2.hdls1.testns.svc.clusterset.local.
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hdls1.testns.svc.clusterset.local. 5 IN A 172.0.0.3
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172-0-0-3.hdls1.testns.svc.clusterset.local. 5 IN A 172.0.0.3
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_http._tcp.hdls1.testns.svc.clusterset.local. 5 IN SRV 0 16 80 172-0-0-3.hdls1.testns.svc.clusterset.local.
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hdls1.testns.svc.clusterset.local. 5 IN A 172.0.0.4
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dup-name.hdls1.testns.svc.clusterset.local. 5 IN A 172.0.0.4
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_http._tcp.hdls1.testns.svc.clusterset.local. 5 IN SRV 0 16 80 dup-name.hdls1.testns.svc.clusterset.local.
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hdls1.testns.svc.clusterset.local. 5 IN A 172.0.0.5
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dup-name.hdls1.testns.svc.clusterset.local. 5 IN A 172.0.0.5
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_http._tcp.hdls1.testns.svc.clusterset.local. 5 IN SRV 0 16 80 dup-name.hdls1.testns.svc.clusterset.local.
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hdls1.testns.svc.clusterset.local. 5 IN AAAA 5678:abcd::1
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5678-abcd--1.hdls1.testns.svc.clusterset.local. 5 IN AAAA 5678:abcd::1
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_http._tcp.hdls1.testns.svc.clusterset.local. 5 IN SRV 0 16 80 5678-abcd--1.hdls1.testns.svc.clusterset.local.
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hdls1.testns.svc.clusterset.local. 5 IN AAAA 5678:abcd::2
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5678-abcd--2.hdls1.testns.svc.clusterset.local. 5 IN AAAA 5678:abcd::2
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_http._tcp.hdls1.testns.svc.clusterset.local. 5 IN SRV 0 16 80 5678-abcd--2.hdls1.testns.svc.clusterset.local.
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hdlsprtls.testns.svc.clusterset.local. 5 IN A 172.0.0.20
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172-0-0-20.hdlsprtls.testns.svc.clusterset.local. 5 IN A 172.0.0.20
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kubedns.kube-system.svc.clusterset.local. 5 IN A 10.0.0.10
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kubedns.kube-system.svc.clusterset.local. 5 IN SRV 0 100 53 kubedns.kube-system.svc.clusterset.local.
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_dns._udp.kubedns.kube-system.svc.clusterset.local. 5 IN SRV 0 100 53 kubedns.kube-system.svc.clusterset.local.
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svc-dual-stack.testns.svc.clusterset.local. 5 IN A 10.0.0.3
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svc-dual-stack.testns.svc.clusterset.local. 5 IN AAAA 10::3
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svc-dual-stack.testns.svc.clusterset.local. 5 IN SRV 0 100 80 svc-dual-stack.testns.svc.clusterset.local.
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_http._tcp.svc-dual-stack.testns.svc.clusterset.local. 5 IN SRV 0 100 80 svc-dual-stack.testns.svc.clusterset.local.
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svc1.testns.svc.clusterset.local. 5 IN A 10.0.0.1
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svc1.testns.svc.clusterset.local. 5 IN SRV 0 100 80 svc1.testns.svc.clusterset.local.
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_http._tcp.svc1.testns.svc.clusterset.local. 5 IN SRV 0 100 80 svc1.testns.svc.clusterset.local.
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svc6.testns.svc.clusterset.local. 5 IN AAAA 1234:abcd::1
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svc6.testns.svc.clusterset.local. 5 IN SRV 0 100 80 svc6.testns.svc.clusterset.local.
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_http._tcp.svc6.testns.svc.clusterset.local. 5 IN SRV 0 100 80 svc6.testns.svc.clusterset.local.
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svcempty.testns.svc.clusterset.local. 5 IN A 10.0.0.1
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svcempty.testns.svc.clusterset.local. 5 IN SRV 0 100 80 svcempty.testns.svc.clusterset.local.
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_http._tcp.svcempty.testns.svc.clusterset.local. 5 IN SRV 0 100 80 svcempty.testns.svc.clusterset.local.
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clusterset.local. 5 IN SOA ns.dns.clusterset.local. hostmaster.clusterset.local. 3 7200 1800 86400 5
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`
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