TrueCloudLab/coredns
16
0
Fork 2
Code Issues Pull requests 1 Projects Releases Packages Wiki Activity Actions

plugin/k8s_external: fix external nsAddrs when CoreDNS Service has no External IPs (#4891)

Browse source 
fix external nsAddrs; add tests;

Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
This commit is contained in:
Chris O'Haver 2022-03-07 12:18:23 -05:00 • committed by GitHub
parent 7263808fe1
commit 3fe9d41a21
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 58 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

69
plugin/kubernetes/ns_test.go
View file

@ -35,24 +35,25 @@ func (a APIConnTest) SvcIndex(s string) []*object.Service {
return nil
}
var svcs = []*object.Service{
{
Name: "dns-service",
Namespace: "kube-system",
ClusterIPs: []string{"10.0.0.111"},
},
{
Name: "hdls-dns-service",
Namespace: "kube-system",
ClusterIPs: []string{api.ClusterIPNone},
},
{
Name: "dns6-service",
Namespace: "kube-system",
ClusterIPs: []string{"10::111"},
},
}
func (APIConnTest) ServiceList() []*object.Service {
svcs := []*object.Service{
{
Name: "dns-service",
Namespace: "kube-system",
ClusterIPs: []string{"10.0.0.111"},
},
{
Name: "hdls-dns-service",
Namespace: "kube-system",
ClusterIPs: []string{api.ClusterIPNone},
},
{
Name: "dns6-service",
Namespace: "kube-system",
ClusterIPs: []string{"10::111"},
},
}
return svcs
}
@ -136,3 +137,37 @@ func TestNsAddrs(t *testing.T) {
t.Errorf("Expected AAAA Header Name to be %q, got %q", expected, cdr.Header().Name)
}
}
func TestNsAddrsExternal(t *testing.T) {
k := New([]string{"example.com."})
k.APIConn = &APIConnTest{}
k.localIPs = []net.IP{net.ParseIP("10.244.0.20")}
// initially no services have an external IP ...
cdrs := k.nsAddrs(true, k.Zones[0])
if len(cdrs) != 0 {
t.Fatalf("Expected 0 results, got %v", len(cdrs))
}
// Add an external IP to one of the services ...
svcs[0].ExternalIPs = []string{"1.2.3.4"}
cdrs = k.nsAddrs(true, k.Zones[0])
if len(cdrs) != 1 {
t.Fatalf("Expected 1 results, got %v", len(cdrs))
}
cdr := cdrs[0]
expected := "1.2.3.4"
if cdr.(*dns.A).A.String() != expected {
t.Errorf("Expected A address to be %q, got %q", expected, cdr.(*dns.A).A.String())
}
expected = "dns-service.kube-system.example.com."
if cdr.Header().Name != expected {
t.Errorf("Expected record name to be %q, got %q", expected, cdr.Header().Name)
}
}