Use svc.cluster.local as default domain

pkg/reconciler/nscert/nscert_test.go

@@ -67,10 +67,10 @@ const (
 type key int
 
 var (
-	wildcardDNSNames      = []string{"*.foo.example.com"}
+	wildcardDNSNames      = []string{"*.foo.svc.cluster.local"}
 	defaultCertName       = names.WildcardCertificate(wildcardDNSNames[0])
 	defaultDomainTemplate = "{{.Name}}.{{.Namespace}}.{{.Domain}}"
-	defaultDomain         = "example.com"
+	defaultDomain         = "svc.cluster.local"
 	// Used to pass configuration to tests in TestReconcile
 	netConfigContextKey key
 )
@@ -110,7 +110,7 @@ func newTestSetup(t *testing.T, configs ...*corev1.ConfigMap) (
 			Namespace: system.Namespace(),
 		},
 		Data: map[string]string{
-			"example.com": "",
+			"svc.cluster.local": "",
 		},
 	}}
 	cms = append(cms, configs...)
@@ -161,7 +161,7 @@ func TestNewController(t *testing.T) {
 				Namespace: system.Namespace(),
 			},
 			Data: map[string]string{
-				"example.com": "",
+				"svc.cluster.local": "",
 			}},
 	)
 
@@ -279,7 +279,7 @@ func TestReconcile(t *testing.T) {
 				Verb:      "delete",
 				Resource:  netv1alpha1.SchemeGroupVersion.WithResource("certificates"),
 			},
-			Name: "foo.example.com",
+			Name: "foo.svc.cluster.local",
 		}},
 		WantEvents: []string{
 			Eventf(corev1.EventTypeNormal, "Deleted", "Deleted Knative Certificate %s/%s", "foo", defaultCertName),
@@ -430,7 +430,7 @@ func TestChangeDefaultDomain(t *testing.T) {
 
 	// The certificate should be created with the default domain.
 	cert := <-certEvents
-	if got, want := cert.Spec.DNSNames[0], "*.testns.example.com"; got != want {
+	if got, want := cert.Spec.DNSNames[0], "*.testns.svc.cluster.local"; got != want {
 		t.Errorf("DNSName[0] = %s, want %s", got, want)
 	}
 
@@ -483,8 +483,8 @@ func TestDomainConfigDomain(t *testing.T) {
 			"autoTLS":                          "Enabled",
 			"namespace-wildcard-cert-selector": "{}",
 		},
-		wantCertName: "testns.example.com",
-		wantDNSName:  "*.testns.example.com",
+		wantCertName: "testns.svc.cluster.local",
+		wantDNSName:  "*.testns.svc.cluster.local",
 	}, {
 		name: "default domain",
 		domainCfg: map[string]string{
@@ -623,7 +623,7 @@ func networkConfig() *netcfg.Config {
 func domainConfig() *routecfg.Domain {
 	domainConfig := &routecfg.Domain{
 		Domains: map[string]*routecfg.LabelSelector{
-			"example.com": {},
+			"svc.cluster.local": {},
 		},
 	}
 	return domainConfig

pkg/reconciler/route/config/domain.go

@@ -33,7 +33,7 @@ const (
 	DomainConfigName = "config-domain"
 	// DefaultDomain holds the domain that Route's live under by default
 	// when no label selector-based options apply.
-	DefaultDomain = "example.com"
+	DefaultDomain = "svc.cluster.local"
 )
 
 // LabelSelector represents map of {key,value} pairs. A single {key,value} in the

test/config/ytt/core/overlay-config-domain.yaml

@@ -0,0 +1,8 @@
+#@ load("@ytt:overlay", "overlay")
+#@ load("helpers.lib.yaml", "system_configmap")
+
+#@overlay/match by=system_configmap("config-domain"), expects=1
+---
+#@overlay/match-child-defaults missing_ok=True
+data:
+  example.com: |