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Merge pull request #119937 from RyanAoh/kep-1860-dev

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Make Kubernetes aware of the LoadBalancer behaviour
This commit is contained in:
Kubernetes Prow Robot
2023-08-17 14:00:28 -07:00
committed by GitHub
parent c18428423a 03415ebc1d
commit ee265c92fe
35 changed files with 1878 additions and 640 deletions
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128
pkg/proxy/iptables/proxier_test.go
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@@ -38,8 +38,11 @@ import (
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/apimachinery/pkg/util/sets"
utilfeature "k8s.io/apiserver/pkg/util/feature"
featuregatetesting "k8s.io/component-base/featuregate/testing"
"k8s.io/component-base/metrics/testutil"
"k8s.io/klog/v2"
"k8s.io/kubernetes/pkg/features"
"k8s.io/kubernetes/pkg/proxy"
"k8s.io/kubernetes/pkg/proxy/conntrack"
"k8s.io/kubernetes/pkg/proxy/metrics"
@@ -8276,3 +8279,128 @@ func TestNoEndpointsMetric(t *testing.T) {
})
}
}
func TestLoadBalancerIngressRouteTypeProxy(t *testing.T) {
ipModeProxy := v1.LoadBalancerIPModeProxy
ipModeVIP := v1.LoadBalancerIPModeVIP
testCases := []struct {
name string
ipModeEnabled bool
svcIP string
svcLBIP string
ipMode *v1.LoadBalancerIPMode
expectedRule bool
}{
/* LoadBalancerIPMode disabled */
{
name: "LoadBalancerIPMode disabled, ipMode Proxy",
ipModeEnabled: false,
svcIP: "10.20.30.41",
svcLBIP: "1.2.3.4",
ipMode: &ipModeProxy,
expectedRule: true,
},
{
name: "LoadBalancerIPMode disabled, ipMode VIP",
ipModeEnabled: false,
svcIP: "10.20.30.42",
svcLBIP: "1.2.3.5",
ipMode: &ipModeVIP,
expectedRule: true,
},
{
name: "LoadBalancerIPMode disabled, ipMode nil",
ipModeEnabled: false,
svcIP: "10.20.30.43",
svcLBIP: "1.2.3.6",
ipMode: nil,
expectedRule: true,
},
/* LoadBalancerIPMode enabled */
{
name: "LoadBalancerIPMode enabled, ipMode Proxy",
ipModeEnabled: true,
svcIP: "10.20.30.41",
svcLBIP: "1.2.3.4",
ipMode: &ipModeProxy,
expectedRule: false,
},
{
name: "LoadBalancerIPMode enabled, ipMode VIP",
ipModeEnabled: true,
svcIP: "10.20.30.42",
svcLBIP: "1.2.3.5",
ipMode: &ipModeVIP,
expectedRule: true,
},
{
name: "LoadBalancerIPMode enabled, ipMode nil",
ipModeEnabled: true,
svcIP: "10.20.30.43",
svcLBIP: "1.2.3.6",
ipMode: nil,
expectedRule: true,
},
}
svcPort := 80
svcNodePort := 3001
svcPortName := proxy.ServicePortName{
NamespacedName: makeNSN("ns1", "svc1"),
Port: "p80",
Protocol: v1.ProtocolTCP,
}
for _, testCase := range testCases {
t.Run(testCase.name, func(t *testing.T) {
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.LoadBalancerIPMode, testCase.ipModeEnabled)()
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt)
makeServiceMap(fp,
makeTestService(svcPortName.Namespace, svcPortName.Name, func(svc *v1.Service) {
svc.Spec.Type = "LoadBalancer"
svc.Spec.ClusterIP = testCase.svcIP
svc.Spec.Ports = []v1.ServicePort{{
Name: svcPortName.Port,
Port: int32(svcPort),
Protocol: v1.ProtocolTCP,
NodePort: int32(svcNodePort),
}}
svc.Status.LoadBalancer.Ingress = []v1.LoadBalancerIngress{{
IP: testCase.svcLBIP,
IPMode: testCase.ipMode,
}}
}),
)
tcpProtocol := v1.ProtocolTCP
populateEndpointSlices(fp,
makeTestEndpointSlice("ns1", "svc1", 1, func(eps *discovery.EndpointSlice) {
eps.AddressType = discovery.AddressTypeIPv4
eps.Endpoints = []discovery.Endpoint{{
Addresses: []string{"10.180.0.1"},
}}
eps.Ports = []discovery.EndpointPort{{
Name: pointer.String("p80"),
Port: pointer.Int32(80),
Protocol: &tcpProtocol,
}}
}),
)
fp.syncProxyRules()
c, _ := ipt.Dump.GetChain(utiliptables.TableNAT, kubeServicesChain)
ruleExists := false
for _, r := range c.Rules {
if r.DestinationAddress != nil && r.DestinationAddress.Value == testCase.svcLBIP {
ruleExists = true
}
}
if ruleExists != testCase.expectedRule {
t.Errorf("unexpected rule for %s", testCase.svcLBIP)
}
})
}
}