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Merge pull request #114407 from princepereira/ppereira-internal-traffic-policy

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Windows Kube-Proxy implementation for internal traffic policy
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Kubernetes Prow Robot 2022-12-13 10:27:57 -08:00 committed by GitHub
commit c9fb0c114d
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1 changed files with 22 additions and 3 deletions
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25
pkg/proxy/winkernel/proxier.go
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@ -128,6 +128,7 @@ type serviceInfo struct {
hns HostNetworkService
preserveDIP bool
localTrafficDSR bool
internalTrafficLocal bool
winProxyOptimization bool
}
@ -531,6 +532,10 @@ func (proxier *Proxier) newServiceInfo(port *v1.ServicePort, service *v1.Service
// Annotation introduced to enable optimized loadbalancing
winProxyOptimization := !(strings.ToUpper(service.Annotations["winProxyOptimization"]) == "DISABLED")
localTrafficDSR := service.Spec.ExternalTrafficPolicy == v1.ServiceExternalTrafficPolicyLocal
var internalTrafficLocal bool
if service.Spec.InternalTrafficPolicy != nil {
internalTrafficLocal = *service.Spec.InternalTrafficPolicy == v1.ServiceInternalTrafficPolicyLocal
}
err := hcn.DSRSupported()
if err != nil {
preserveDIP = false
@ -547,9 +552,9 @@ func (proxier *Proxier) newServiceInfo(port *v1.ServicePort, service *v1.Service
info.targetPort = targetPort
info.hns = proxier.hns
info.localTrafficDSR = localTrafficDSR
info.internalTrafficLocal = internalTrafficLocal
info.winProxyOptimization = winProxyOptimization
klog.V(3).InfoS("Flags enabled for service", "service", service.Name, "localTrafficDSR", localTrafficDSR, "preserveDIP", preserveDIP, "winProxyOptimization", winProxyOptimization)
klog.V(3).InfoS("Flags enabled for service", "service", service.Name, "localTrafficDSR", localTrafficDSR, "internalTrafficLocal", internalTrafficLocal, "preserveDIP", preserveDIP, "winProxyOptimization", winProxyOptimization)
for _, eip := range service.Spec.ExternalIPs {
info.externalIPs = append(info.externalIPs, &externalIPInfo{ip: eip})
@ -1296,6 +1301,12 @@ func (proxier *Proxier) syncProxyRules() {
continue
}
if svcInfo.internalTrafficLocal && svcInfo.localTrafficDSR && !ep.GetIsLocal() {
// No need to use or create remote endpoint when internal and external traffic policy is remote
klog.V(3).InfoS("Skipping the endpoint. Both internalTraffic and external traffic policies are local", "EpIP", ep.ip, " EpPort", ep.port)
continue
}
if someEndpointsServing {
if !allEndpointsTerminating && !ep.IsReady() {
@ -1457,10 +1468,18 @@ func (proxier *Proxier) syncProxyRules() {
proxier.deleteExistingLoadBalancer(hns, svcInfo.winProxyOptimization, &svcInfo.hnsID, sourceVip, Enum(svcInfo.Protocol()), uint16(svcInfo.targetPort), uint16(svcInfo.Port()), hnsEndpoints, queriedLoadBalancers)
if endpointsAvailableForLB {
// clusterIPEndpoints is the endpoint list used for creating ClusterIP loadbalancer.
clusterIPEndpoints := hnsEndpoints
if svcInfo.internalTrafficLocal {
// Take local endpoints for clusterip loadbalancer when internal traffic policy is local.
clusterIPEndpoints = hnsLocalEndpoints
}
// If all endpoints are terminating, then no need to create Cluster IP LoadBalancer
// Cluster IP LoadBalancer creation
hnsLoadBalancer, err := hns.getLoadBalancer(
hnsEndpoints,
clusterIPEndpoints,
loadBalancerFlags{isDSR: proxier.isDSR, isIPv6: proxier.isIPv6Mode, sessionAffinity: sessionAffinityClientIP},
sourceVip,
svcInfo.ClusterIP().String(),