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Merge pull request #91357 from aojea/proxyFamily

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kube-proxy should infer the service IP family from the ClusterIP field
This commit is contained in:
Kubernetes Prow Robot 2020-07-01 00:06:06 -07:00 committed by GitHub
commit 1a80caef4a
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7 changed files with 35 additions and 34 deletions
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1
pkg/proxy/metaproxier/BUILD
View File

@ -9,6 +9,7 @@ go_library(
deps = [
"//pkg/proxy:go_default_library",
"//pkg/proxy/config:go_default_library",
"//pkg/proxy/util:go_default_library",
"//staging/src/k8s.io/api/core/v1:go_default_library",
"//staging/src/k8s.io/api/discovery/v1beta1:go_default_library",
"//vendor/k8s.io/klog/v2:go_default_library",

33
pkg/proxy/metaproxier/meta_proxier.go
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@ -19,10 +19,11 @@ package metaproxier
import (
"fmt"
"k8s.io/api/core/v1"
v1 "k8s.io/api/core/v1"
"k8s.io/klog/v2"
"k8s.io/kubernetes/pkg/proxy"
"k8s.io/kubernetes/pkg/proxy/config"
utilproxy "k8s.io/kubernetes/pkg/proxy/util"
utilnet "k8s.io/utils/net"
@ -62,33 +63,41 @@ func (proxier *metaProxier) SyncLoop() {
// OnServiceAdd is called whenever creation of new service object is observed.
func (proxier *metaProxier) OnServiceAdd(service *v1.Service) {
if *(service.Spec.IPFamily) == v1.IPv4Protocol {
proxier.ipv4Proxier.OnServiceAdd(service)
if utilproxy.ShouldSkipService(service) {
return
}
proxier.ipv6Proxier.OnServiceAdd(service)
if utilnet.IsIPv6String(service.Spec.ClusterIP) {
proxier.ipv6Proxier.OnServiceAdd(service)
} else {
proxier.ipv4Proxier.OnServiceAdd(service)
}
}
// OnServiceUpdate is called whenever modification of an existing
// service object is observed.
func (proxier *metaProxier) OnServiceUpdate(oldService, service *v1.Service) {
// IPFamily is immutable, hence we only need to check on the new service
if *(service.Spec.IPFamily) == v1.IPv4Protocol {
proxier.ipv4Proxier.OnServiceUpdate(oldService, service)
if utilproxy.ShouldSkipService(service) {
return
}
proxier.ipv6Proxier.OnServiceUpdate(oldService, service)
// IPFamily is immutable, hence we only need to check on the new service
if utilnet.IsIPv6String(service.Spec.ClusterIP) {
proxier.ipv6Proxier.OnServiceUpdate(oldService, service)
} else {
proxier.ipv4Proxier.OnServiceUpdate(oldService, service)
}
}
// OnServiceDelete is called whenever deletion of an existing service
// object is observed.
func (proxier *metaProxier) OnServiceDelete(service *v1.Service) {
if *(service.Spec.IPFamily) == v1.IPv4Protocol {
proxier.ipv4Proxier.OnServiceDelete(service)
if utilproxy.ShouldSkipService(service) {
return
}
proxier.ipv6Proxier.OnServiceDelete(service)
if utilnet.IsIPv6String(service.Spec.ClusterIP) {
proxier.ipv6Proxier.OnServiceDelete(service)
} else {
proxier.ipv4Proxier.OnServiceDelete(service)
}
}
// OnServiceSynced is called once all the initial event handlers were

7
pkg/proxy/service.go
View File

@ -25,7 +25,7 @@ import (
"k8s.io/klog/v2"
"k8s.io/api/core/v1"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/client-go/tools/record"
@ -307,8 +307,8 @@ func (sct *ServiceChangeTracker) serviceToServiceMap(service *v1.Service) Servic
if service == nil {
return nil
}
svcName := types.NamespacedName{Namespace: service.Namespace, Name: service.Name}
if utilproxy.ShouldSkipService(svcName, service) {
if utilproxy.ShouldSkipService(service) {
return nil
}
@ -322,6 +322,7 @@ func (sct *ServiceChangeTracker) serviceToServiceMap(service *v1.Service) Servic
}
serviceMap := make(ServiceMap)
svcName := types.NamespacedName{Namespace: service.Namespace, Name: service.Name}
for i := range service.Spec.Ports {
servicePort := &service.Spec.Ports[i]
svcPortName := ServicePortName{NamespacedName: svcName, Port: servicePort.Name, Protocol: servicePort.Protocol}

11
pkg/proxy/userspace/proxier.go
View File

@ -489,12 +489,11 @@ func (proxier *Proxier) mergeService(service *v1.Service) sets.String {
if service == nil {
return nil
}
svcName := types.NamespacedName{Namespace: service.Namespace, Name: service.Name}
if utilproxy.ShouldSkipService(svcName, service) {
klog.V(3).Infof("Skipping service %s due to clusterIP = %q", svcName, service.Spec.ClusterIP)
if utilproxy.ShouldSkipService(service) {
return nil
}
existingPorts := sets.NewString()
svcName := types.NamespacedName{Namespace: service.Namespace, Name: service.Name}
for i := range service.Spec.Ports {
servicePort := &service.Spec.Ports[i]
serviceName := proxy.ServicePortName{NamespacedName: svcName, Port: servicePort.Name}
@ -551,12 +550,12 @@ func (proxier *Proxier) unmergeService(service *v1.Service, existingPorts sets.S
if service == nil {
return
}
svcName := types.NamespacedName{Namespace: service.Namespace, Name: service.Name}
if utilproxy.ShouldSkipService(svcName, service) {
klog.V(3).Infof("Skipping service %s due to clusterIP = %q", svcName, service.Spec.ClusterIP)
if utilproxy.ShouldSkipService(service) {
return
}
staleUDPServices := sets.NewString()
svcName := types.NamespacedName{Namespace: service.Namespace, Name: service.Name}
for i := range service.Spec.Ports {
servicePort := &service.Spec.Ports[i]
if existingPorts.Has(servicePort.Name) {

1
pkg/proxy/util/BUILD
View File

@ -35,7 +35,6 @@ go_test(
"//pkg/proxy/util/testing:go_default_library",
"//staging/src/k8s.io/api/core/v1:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/types:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/util/sets:go_default_library",
],
)

6
pkg/proxy/util/utils.go
View File

@ -146,15 +146,15 @@ func GetLocalAddrs() ([]net.IP, error) {
}
// ShouldSkipService checks if a given service should skip proxying
func ShouldSkipService(svcName types.NamespacedName, service *v1.Service) bool {
func ShouldSkipService(service *v1.Service) bool {
// if ClusterIP is "None" or empty, skip proxying
if !helper.IsServiceIPSet(service) {
klog.V(3).Infof("Skipping service %s due to clusterIP = %q", svcName, service.Spec.ClusterIP)
klog.V(3).Infof("Skipping service %s in namespace %s due to clusterIP = %q", service.Name, service.Namespace, service.Spec.ClusterIP)
return true
}
// Even if ClusterIP is set, ServiceTypeExternalName services don't get proxied
if service.Spec.Type == v1.ServiceTypeExternalName {
klog.V(3).Infof("Skipping service %s due to Type=ExternalName", svcName)
klog.V(3).Infof("Skipping service %s in namespace %s due to Type=ExternalName", service.Name, service.Namespace)
return true
}
return false

10
pkg/proxy/util/utils_test.go
View File

@ -25,7 +25,6 @@ import (
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/sets"
fake "k8s.io/kubernetes/pkg/proxy/util/testing"
)
@ -167,7 +166,6 @@ func TestIsProxyableHostname(t *testing.T) {
func TestShouldSkipService(t *testing.T) {
testCases := []struct {
service *v1.Service
svcName types.NamespacedName
shouldSkip bool
}{
{
@ -178,7 +176,6 @@ func TestShouldSkipService(t *testing.T) {
ClusterIP: v1.ClusterIPNone,
},
},
svcName: types.NamespacedName{Namespace: "foo", Name: "bar"},
shouldSkip: true,
},
{
@ -189,7 +186,6 @@ func TestShouldSkipService(t *testing.T) {
ClusterIP: "",
},
},
svcName: types.NamespacedName{Namespace: "foo", Name: "bar"},
shouldSkip: true,
},
{
@ -201,7 +197,6 @@ func TestShouldSkipService(t *testing.T) {
Type: v1.ServiceTypeExternalName,
},
},
svcName: types.NamespacedName{Namespace: "foo", Name: "bar"},
shouldSkip: true,
},
{
@ -213,7 +208,6 @@ func TestShouldSkipService(t *testing.T) {
Type: v1.ServiceTypeClusterIP,
},
},
svcName: types.NamespacedName{Namespace: "foo", Name: "bar"},
shouldSkip: false,
},
{
@ -225,7 +219,6 @@ func TestShouldSkipService(t *testing.T) {
Type: v1.ServiceTypeNodePort,
},
},
svcName: types.NamespacedName{Namespace: "foo", Name: "bar"},
shouldSkip: false,
},
{
@ -237,13 +230,12 @@ func TestShouldSkipService(t *testing.T) {
Type: v1.ServiceTypeLoadBalancer,
},
},
svcName: types.NamespacedName{Namespace: "foo", Name: "bar"},
shouldSkip: false,
},
}
for i := range testCases {
skip := ShouldSkipService(testCases[i].svcName, testCases[i].service)
skip := ShouldSkipService(testCases[i].service)
if skip != testCases[i].shouldSkip {
t.Errorf("case %d: expect %v, got %v", i, testCases[i].shouldSkip, skip)
}