feat: Set LB service session affinity to "clientIP"

Enabling sticky sessions for the LB service may improve the robustness of TURN connection routing during scale-out/in.
l7mp · Jul 31, 2024 · f3b1e46 · f3b1e46
1 parent 450f86e
commit f3b1e46
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Showing 2 changed files with 6 additions and 3 deletions.
diff --git a/internal/renderer/service_util.go b/internal/renderer/service_util.go
@@ -310,9 +310,10 @@ func (r *Renderer) createLbService4Gateway(c *RenderContext, gw *gwapiv1.Gateway
 				Annotations: requestedAnnotations,
 			},
 			Spec: corev1.ServiceSpec{
-				Type:     opdefault.DefaultServiceType,
-				Selector: map[string]string{},
-				Ports:    []corev1.ServicePort{},
+				Type:            opdefault.DefaultServiceType,
+				Selector:        map[string]string{},
+				Ports:           []corev1.ServicePort{},
+				SessionAffinity: corev1.ServiceAffinityClientIP,
 			},
 		}
 	} else {

diff --git a/internal/renderer/service_util_test.go b/internal/renderer/service_util_test.go
@@ -519,6 +519,8 @@ func TestRenderServiceUtil(t *testing.T) {
 				assert.Equal(t, corev1.ServiceTypeLoadBalancer, spec.Type, "lb type")
 				assert.Equal(t, defaultExternalTrafficPolicy, spec.ExternalTrafficPolicy,
 					"ext traffic policy default")
+				assert.Equal(t, corev1.ServiceAffinityClientIP, spec.SessionAffinity,
+					"session faffinity")
 
 				sp := spec.Ports
 				assert.Len(t, sp, 1, "service-port len")