mirror of
https://github.com/coredns/coredns.git
synced 2025-11-03 18:53:13 -05:00
5c71bd0b87
* kubernetes: add multicluster support Add multicluster support via Multi-Cluster Services API (MCS-API) via a new option `multiclusterZones` in the kubernetes plugin. When some multicluster zones are passed to the kubernetes plugin, it will start watching the ServiceImport objects and its associated EndpointSlices. Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr> * kubernetes: implement xfr support for multicluster zones Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr> --------- Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr>
434 lines
13 KiB
Go
434 lines
13 KiB
Go
package external
|
|
|
|
import (
|
|
"context"
|
|
"testing"
|
|
|
|
"github.com/coredns/coredns/plugin/kubernetes"
|
|
"github.com/coredns/coredns/plugin/kubernetes/object"
|
|
"github.com/coredns/coredns/plugin/pkg/dnstest"
|
|
"github.com/coredns/coredns/plugin/test"
|
|
"github.com/coredns/coredns/request"
|
|
|
|
"github.com/miekg/dns"
|
|
api "k8s.io/api/core/v1"
|
|
)
|
|
|
|
func TestExternal(t *testing.T) {
|
|
k := kubernetes.New([]string{"cluster.local."})
|
|
k.Namespaces = map[string]struct{}{"testns": {}}
|
|
k.APIConn = &external{}
|
|
|
|
e := New()
|
|
e.Zones = []string{"example.com.", "in-addr.arpa."}
|
|
e.headless = true
|
|
e.Next = test.NextHandler(dns.RcodeSuccess, nil)
|
|
e.externalFunc = k.External
|
|
e.externalAddrFunc = externalAddress // internal test function
|
|
e.externalSerialFunc = externalSerial // internal test function
|
|
|
|
ctx := context.TODO()
|
|
for i, tc := range tests {
|
|
r := tc.Msg()
|
|
w := dnstest.NewRecorder(&test.ResponseWriter{})
|
|
|
|
_, err := e.ServeDNS(ctx, w, r)
|
|
if err != tc.Error {
|
|
t.Errorf("Test %d expected no error, got %v", i, err)
|
|
return
|
|
}
|
|
if tc.Error != nil {
|
|
continue
|
|
}
|
|
|
|
resp := w.Msg
|
|
|
|
if resp == nil {
|
|
t.Fatalf("Test %d, got nil message and no error for %q", i, r.Question[0].Name)
|
|
}
|
|
if !resp.Authoritative {
|
|
t.Error("Expected authoritative answer")
|
|
}
|
|
if err = test.SortAndCheck(resp, tc); err != nil {
|
|
t.Errorf("Test %d: %v", i, err)
|
|
}
|
|
}
|
|
}
|
|
|
|
var tests = []test.Case{
|
|
// PTR reverse lookup
|
|
{
|
|
Qname: "4.3.2.1.in-addr.arpa.", Qtype: dns.TypePTR, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.PTR("4.3.2.1.in-addr.arpa. 5 IN PTR svc1.testns.example.com."),
|
|
},
|
|
},
|
|
// Bad PTR reverse lookup using existing service name
|
|
{
|
|
Qname: "svc1.testns.example.com.", Qtype: dns.TypePTR, Rcode: dns.RcodeSuccess,
|
|
Ns: []dns.RR{
|
|
test.SOA("example.com. 5 IN SOA ns1.dns.example.com. hostmaster.example.com. 1499347823 7200 1800 86400 5"),
|
|
},
|
|
},
|
|
// Bad PTR reverse lookup using non-existing service name
|
|
{
|
|
Qname: "not-existing.testns.example.com.", Qtype: dns.TypePTR, Rcode: dns.RcodeNameError,
|
|
Ns: []dns.RR{
|
|
test.SOA("example.com. 5 IN SOA ns1.dns.example.com. hostmaster.example.com. 1499347823 7200 1800 86400 5"),
|
|
},
|
|
},
|
|
// A Service
|
|
{
|
|
Qname: "svc1.testns.example.com.", Qtype: dns.TypeA, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.A("svc1.testns.example.com. 5 IN A 1.2.3.4"),
|
|
},
|
|
},
|
|
{
|
|
Qname: "svc1.testns.example.com.", Qtype: dns.TypeSRV, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{test.SRV("svc1.testns.example.com. 5 IN SRV 0 100 80 svc1.testns.example.com.")},
|
|
Extra: []dns.RR{test.A("svc1.testns.example.com. 5 IN A 1.2.3.4")},
|
|
},
|
|
// SRV Service Not udp/tcp
|
|
{
|
|
Qname: "*._not-udp-or-tcp.svc1.testns.example.com.", Qtype: dns.TypeSRV, Rcode: dns.RcodeNameError,
|
|
Ns: []dns.RR{
|
|
test.SOA("example.com. 5 IN SOA ns1.dns.example.com. hostmaster.example.com. 1499347823 7200 1800 86400 5"),
|
|
},
|
|
},
|
|
// SRV Service
|
|
{
|
|
Qname: "_http._tcp.svc1.testns.example.com.", Qtype: dns.TypeSRV, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.SRV("_http._tcp.svc1.testns.example.com. 5 IN SRV 0 100 80 svc1.testns.example.com."),
|
|
},
|
|
Extra: []dns.RR{
|
|
test.A("svc1.testns.example.com. 5 IN A 1.2.3.4"),
|
|
},
|
|
},
|
|
// AAAA Service (with an existing A record, but no AAAA record)
|
|
{
|
|
Qname: "svc1.testns.example.com.", Qtype: dns.TypeAAAA, Rcode: dns.RcodeSuccess,
|
|
Ns: []dns.RR{
|
|
test.SOA("example.com. 5 IN SOA ns1.dns.example.com. hostmaster.example.com. 1499347823 7200 1800 86400 5"),
|
|
},
|
|
},
|
|
// AAAA Service (non-existing service)
|
|
{
|
|
Qname: "svc0.testns.example.com.", Qtype: dns.TypeAAAA, Rcode: dns.RcodeNameError,
|
|
Ns: []dns.RR{
|
|
test.SOA("example.com. 5 IN SOA ns1.dns.example.com. hostmaster.example.com. 1499347823 7200 1800 86400 5"),
|
|
},
|
|
},
|
|
// A Service (non-existing service)
|
|
{
|
|
Qname: "svc0.testns.example.com.", Qtype: dns.TypeA, Rcode: dns.RcodeNameError,
|
|
Ns: []dns.RR{
|
|
test.SOA("example.com. 5 IN SOA ns1.dns.example.com. hostmaster.example.com. 1499347823 7200 1800 86400 5"),
|
|
},
|
|
},
|
|
// A Service (non-existing namespace)
|
|
{
|
|
Qname: "svc0.svc-nons.example.com.", Qtype: dns.TypeA, Rcode: dns.RcodeNameError,
|
|
Ns: []dns.RR{
|
|
test.SOA("example.com. 5 IN SOA ns1.dns.example.com. hostmaster.example.com. 1499347823 7200 1800 86400 5"),
|
|
},
|
|
},
|
|
// AAAA Service
|
|
{
|
|
Qname: "svc6.testns.example.com.", Qtype: dns.TypeAAAA, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.AAAA("svc6.testns.example.com. 5 IN AAAA 1:2::5"),
|
|
},
|
|
},
|
|
// SRV
|
|
{
|
|
Qname: "_http._tcp.svc6.testns.example.com.", Qtype: dns.TypeSRV, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.SRV("_http._tcp.svc6.testns.example.com. 5 IN SRV 0 100 80 svc6.testns.example.com."),
|
|
},
|
|
Extra: []dns.RR{
|
|
test.AAAA("svc6.testns.example.com. 5 IN AAAA 1:2::5"),
|
|
},
|
|
},
|
|
// SRV
|
|
{
|
|
Qname: "svc6.testns.example.com.", Qtype: dns.TypeSRV, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.SRV("svc6.testns.example.com. 5 IN SRV 0 100 80 svc6.testns.example.com."),
|
|
},
|
|
Extra: []dns.RR{
|
|
test.AAAA("svc6.testns.example.com. 5 IN AAAA 1:2::5"),
|
|
},
|
|
},
|
|
{
|
|
Qname: "testns.example.com.", Qtype: dns.TypeA, Rcode: dns.RcodeSuccess,
|
|
Ns: []dns.RR{
|
|
test.SOA("example.com. 5 IN SOA ns1.dns.example.com. hostmaster.example.com. 1499347823 7200 1800 86400 5"),
|
|
},
|
|
},
|
|
{
|
|
Qname: "testns.example.com.", Qtype: dns.TypeSOA, Rcode: dns.RcodeSuccess,
|
|
Ns: []dns.RR{
|
|
test.SOA("example.com. 5 IN SOA ns1.dns.example.com. hostmaster.example.com. 1499347823 7200 1800 86400 5"),
|
|
},
|
|
},
|
|
// svc11
|
|
{
|
|
Qname: "svc11.testns.example.com.", Qtype: dns.TypeA, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.A("svc11.testns.example.com. 5 IN A 2.3.4.5"),
|
|
},
|
|
},
|
|
{
|
|
Qname: "_http._tcp.svc11.testns.example.com.", Qtype: dns.TypeSRV, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.SRV("_http._tcp.svc11.testns.example.com. 5 IN SRV 0 100 80 svc11.testns.example.com."),
|
|
},
|
|
Extra: []dns.RR{
|
|
test.A("svc11.testns.example.com. 5 IN A 2.3.4.5"),
|
|
},
|
|
},
|
|
{
|
|
Qname: "svc11.testns.example.com.", Qtype: dns.TypeSRV, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.SRV("svc11.testns.example.com. 5 IN SRV 0 100 80 svc11.testns.example.com."),
|
|
},
|
|
Extra: []dns.RR{
|
|
test.A("svc11.testns.example.com. 5 IN A 2.3.4.5"),
|
|
},
|
|
},
|
|
// svc12
|
|
{
|
|
Qname: "svc12.testns.example.com.", Qtype: dns.TypeA, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.CNAME("svc12.testns.example.com. 5 IN CNAME dummy.hostname"),
|
|
},
|
|
},
|
|
{
|
|
Qname: "_http._tcp.svc12.testns.example.com.", Qtype: dns.TypeSRV, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.SRV("_http._tcp.svc12.testns.example.com. 5 IN SRV 0 100 80 dummy.hostname."),
|
|
},
|
|
},
|
|
{
|
|
Qname: "svc12.testns.example.com.", Qtype: dns.TypeSRV, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.SRV("svc12.testns.example.com. 5 IN SRV 0 100 80 dummy.hostname."),
|
|
},
|
|
},
|
|
// headless service
|
|
{
|
|
Qname: "svc-headless.testns.example.com.", Qtype: dns.TypeA, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.A("svc-headless.testns.example.com. 5 IN A 1.2.3.4"),
|
|
test.A("svc-headless.testns.example.com. 5 IN A 1.2.3.5"),
|
|
},
|
|
},
|
|
{
|
|
Qname: "svc-headless.testns.example.com.", Qtype: dns.TypeSRV, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.SRV("svc-headless.testns.example.com. 5 IN SRV 0 50 80 endpoint-svc-0.svc-headless.testns.example.com."),
|
|
test.SRV("svc-headless.testns.example.com. 5 IN SRV 0 50 80 endpoint-svc-1.svc-headless.testns.example.com."),
|
|
},
|
|
Extra: []dns.RR{
|
|
test.A("endpoint-svc-0.svc-headless.testns.example.com. 5 IN A 1.2.3.4"),
|
|
test.A("endpoint-svc-1.svc-headless.testns.example.com. 5 IN A 1.2.3.5"),
|
|
},
|
|
},
|
|
{
|
|
Qname: "_http._tcp.svc-headless.testns.example.com.", Qtype: dns.TypeSRV, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.SRV("_http._tcp.svc-headless.testns.example.com. 5 IN SRV 0 50 80 endpoint-svc-0.svc-headless.testns.example.com."),
|
|
test.SRV("_http._tcp.svc-headless.testns.example.com. 5 IN SRV 0 50 80 endpoint-svc-1.svc-headless.testns.example.com."),
|
|
},
|
|
Extra: []dns.RR{
|
|
test.A("endpoint-svc-0.svc-headless.testns.example.com. 5 IN A 1.2.3.4"),
|
|
test.A("endpoint-svc-1.svc-headless.testns.example.com. 5 IN A 1.2.3.5"),
|
|
},
|
|
},
|
|
{
|
|
Qname: "endpoint-svc-0.svc-headless.testns.example.com.", Qtype: dns.TypeSRV, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.SRV("endpoint-svc-0.svc-headless.testns.example.com. 5 IN SRV 0 100 80 endpoint-svc-0.svc-headless.testns.example.com."),
|
|
},
|
|
Extra: []dns.RR{
|
|
test.A("endpoint-svc-0.svc-headless.testns.example.com. 5 IN A 1.2.3.4"),
|
|
},
|
|
},
|
|
{
|
|
Qname: "endpoint-svc-1.svc-headless.testns.example.com.", Qtype: dns.TypeSRV, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.SRV("endpoint-svc-1.svc-headless.testns.example.com. 5 IN SRV 0 100 80 endpoint-svc-1.svc-headless.testns.example.com."),
|
|
},
|
|
Extra: []dns.RR{
|
|
test.A("endpoint-svc-1.svc-headless.testns.example.com. 5 IN A 1.2.3.5"),
|
|
},
|
|
},
|
|
{
|
|
Qname: "endpoint-svc-0.svc-headless.testns.example.com.", Qtype: dns.TypeA, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.A("endpoint-svc-0.svc-headless.testns.example.com. 5 IN A 1.2.3.4"),
|
|
},
|
|
},
|
|
{
|
|
Qname: "endpoint-svc-1.svc-headless.testns.example.com.", Qtype: dns.TypeA, Rcode: dns.RcodeSuccess,
|
|
Answer: []dns.RR{
|
|
test.A("endpoint-svc-1.svc-headless.testns.example.com. 5 IN A 1.2.3.5"),
|
|
},
|
|
},
|
|
}
|
|
|
|
type external struct{}
|
|
|
|
func (external) HasSynced() bool { return true }
|
|
func (external) Run() {}
|
|
func (external) Stop() error { return nil }
|
|
func (external) EpIndexReverse(string) []*object.Endpoints { return nil }
|
|
func (external) SvcIndexReverse(string) []*object.Service { return nil }
|
|
func (external) Modified(kubernetes.ModifiedMode) int64 { return 0 }
|
|
|
|
func (external) SvcImportIndex(s string) []*object.ServiceImport { return nil }
|
|
func (external) ServiceImportList() []*object.ServiceImport { return nil }
|
|
func (external) McEpIndex(s string) []*object.MultiClusterEndpoints { return nil }
|
|
func (external) MultiClusterEndpointsList(s string) []*object.MultiClusterEndpoints { return nil }
|
|
|
|
func (external) EpIndex(s string) []*object.Endpoints {
|
|
return epIndexExternal[s]
|
|
}
|
|
|
|
func (external) EndpointsList() []*object.Endpoints {
|
|
var eps []*object.Endpoints
|
|
for _, ep := range epIndexExternal {
|
|
eps = append(eps, ep...)
|
|
}
|
|
return eps
|
|
}
|
|
func (external) GetNodeByName(ctx context.Context, name string) (*api.Node, error) { return nil, nil }
|
|
func (external) SvcIndex(s string) []*object.Service { return svcIndexExternal[s] }
|
|
func (external) PodIndex(string) []*object.Pod { return nil }
|
|
|
|
func (external) SvcExtIndexReverse(ip string) (result []*object.Service) {
|
|
for _, svcs := range svcIndexExternal {
|
|
for _, svc := range svcs {
|
|
for _, exIp := range svc.ExternalIPs {
|
|
if exIp != ip {
|
|
continue
|
|
}
|
|
result = append(result, svc)
|
|
}
|
|
}
|
|
}
|
|
return result
|
|
}
|
|
|
|
func (external) GetNamespaceByName(name string) (*object.Namespace, error) {
|
|
return &object.Namespace{
|
|
Name: name,
|
|
}, nil
|
|
}
|
|
|
|
var epIndexExternal = map[string][]*object.Endpoints{
|
|
"svc-headless.testns": {
|
|
{
|
|
Name: "svc-headless",
|
|
Namespace: "testns",
|
|
Index: "svc-headless.testns",
|
|
Subsets: []object.EndpointSubset{
|
|
{
|
|
Ports: []object.EndpointPort{
|
|
{
|
|
Port: 80,
|
|
Name: "http",
|
|
Protocol: "TCP",
|
|
},
|
|
},
|
|
Addresses: []object.EndpointAddress{
|
|
{
|
|
IP: "1.2.3.4",
|
|
Hostname: "endpoint-svc-0",
|
|
NodeName: "test-node",
|
|
TargetRefName: "endpoint-svc-0",
|
|
},
|
|
{
|
|
IP: "1.2.3.5",
|
|
Hostname: "endpoint-svc-1",
|
|
NodeName: "test-node",
|
|
TargetRefName: "endpoint-svc-1",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
|
|
var svcIndexExternal = map[string][]*object.Service{
|
|
"svc1.testns": {
|
|
{
|
|
Name: "svc1",
|
|
Namespace: "testns",
|
|
Type: api.ServiceTypeClusterIP,
|
|
ClusterIPs: []string{"10.0.0.1"},
|
|
ExternalIPs: []string{"1.2.3.4"},
|
|
Ports: []api.ServicePort{{Name: "http", Protocol: "tcp", Port: 80}},
|
|
},
|
|
},
|
|
"svc6.testns": {
|
|
{
|
|
Name: "svc6",
|
|
Namespace: "testns",
|
|
Type: api.ServiceTypeClusterIP,
|
|
ClusterIPs: []string{"10.0.0.3"},
|
|
ExternalIPs: []string{"1:2::5"},
|
|
Ports: []api.ServicePort{{Name: "http", Protocol: "tcp", Port: 80}},
|
|
},
|
|
},
|
|
"svc11.testns": {
|
|
{
|
|
Name: "svc11",
|
|
Namespace: "testns",
|
|
Type: api.ServiceTypeLoadBalancer,
|
|
ExternalIPs: []string{"2.3.4.5"},
|
|
ClusterIPs: []string{"10.0.0.3"},
|
|
Ports: []api.ServicePort{{Name: "http", Protocol: "tcp", Port: 80}},
|
|
},
|
|
},
|
|
"svc12.testns": {
|
|
{
|
|
Name: "svc12",
|
|
Namespace: "testns",
|
|
Type: api.ServiceTypeLoadBalancer,
|
|
ClusterIPs: []string{"10.0.0.3"},
|
|
ExternalIPs: []string{"dummy.hostname"},
|
|
Ports: []api.ServicePort{{Name: "http", Protocol: "tcp", Port: 80}},
|
|
},
|
|
},
|
|
"svc-headless.testns": {
|
|
{
|
|
Name: "svc-headless",
|
|
Namespace: "testns",
|
|
Type: api.ServiceTypeClusterIP,
|
|
ClusterIPs: []string{"None"},
|
|
Ports: []api.ServicePort{{Name: "http", Protocol: "tcp", Port: 80}},
|
|
},
|
|
},
|
|
}
|
|
|
|
func (external) ServiceList() []*object.Service {
|
|
var svcs []*object.Service
|
|
for _, svc := range svcIndexExternal {
|
|
svcs = append(svcs, svc...)
|
|
}
|
|
return svcs
|
|
}
|
|
|
|
func externalAddress(state request.Request, headless bool) []dns.RR {
|
|
a := test.A("example.org. IN A 127.0.0.1")
|
|
return []dns.RR{a}
|
|
}
|
|
|
|
func externalSerial(string) uint32 {
|
|
return 1499347823
|
|
}
|