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use endpoint (IP, port) tuple to track active endpoints of a service in use. Currently only endpoint IP (#842)

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used so any change in port of the endpoint leaves stale ipvs server config

Fixes #841
This commit is contained in:
Murali Reddy 2020-03-02 23:28:14 +05:30 committed by GitHub
parent 4f627bc8bc
commit 0857436ec3
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 13 additions and 7 deletions
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6
pkg/controllers/proxy/network_services_controller.go
View File

@ -241,6 +241,7 @@ type serviceInfo struct {
namespace string
clusterIP net.IP
port int
targetPort string
protocol string
nodePort int
sessionAffinity bool
@ -1040,6 +1041,7 @@ func (nsc *NetworkServicesController) buildServicesInfo() serviceInfoMap {
svcInfo := serviceInfo{
clusterIP: net.ParseIP(svc.Spec.ClusterIP),
port: int(port.Port),
targetPort: port.TargetPort.String(),
protocol: strings.ToLower(string(port.Protocol)),
nodePort: int(port.NodePort),
name: svc.ObjectMeta.Name,
@ -1925,6 +1927,10 @@ func generateIpPortId(ip, protocol, port string) string {
return ip + "-" + protocol + "-" + port
}
func generateEndpointId(ip, port string) string {
return ip + ":" + port
}
// returns all IP addresses found on any network address in the system, excluding dummy and docker interfaces
func getAllLocalIPs() ([]netlink.Addr, error) {
links, err := netlink.LinkList()

14
pkg/controllers/proxy/service_endpoints_sync.go
View File

@ -139,7 +139,7 @@ func (nsc *NetworkServicesController) setupClusterIPServices(serviceInfoMap serv
if err != nil {
glog.Errorf(err.Error())
} else {
activeServiceEndpointMap[clusterServiceId] = append(activeServiceEndpointMap[clusterServiceId], endpoint.ip)
activeServiceEndpointMap[clusterServiceId] = append(activeServiceEndpointMap[clusterServiceId], generateEndpointId(endpoint.ip, strconv.Itoa(endpoint.port)))
}
}
}
@ -231,7 +231,7 @@ func (nsc *NetworkServicesController) setupNodePortServices(serviceInfoMap servi
if err != nil {
glog.Errorf(err.Error())
} else {
activeServiceEndpointMap[nodeServiceIds[i]] = append(activeServiceEndpointMap[nodeServiceIds[i]], endpoint.ip)
activeServiceEndpointMap[nodeServiceIds[i]] = append(activeServiceEndpointMap[nodeServiceIds[i]], generateEndpointId(endpoint.ip, strconv.Itoa(endpoint.port)))
}
}
}
@ -341,7 +341,7 @@ func (nsc *NetworkServicesController) setupExternalIPServices(serviceInfoMap ser
activeServiceEndpointMap[externalIpServiceId] = make([]string, 0)
for _, endpoint := range endpoints {
if !svc.local || (svc.local && endpoint.isLocal) {
activeServiceEndpointMap[externalIpServiceId] = append(activeServiceEndpointMap[externalIpServiceId], endpoint.ip)
activeServiceEndpointMap[externalIpServiceId] = append(activeServiceEndpointMap[externalIpServiceId], generateEndpointId(endpoint.ip, strconv.Itoa(endpoint.port)))
}
}
}
@ -485,9 +485,9 @@ func (nsc *NetworkServicesController) cleanupStaleIPVSConfig(activeServiceEndpoi
continue
}
endpoints, ok := activeServiceEndpointMap[key]
endpointIds, ok := activeServiceEndpointMap[key]
// Only delete the service if it's not there anymore to prevent flapping
// old: if !ok || len(endpoints) == 0 {
// old: if !ok || len(endpointIds) == 0 {
if !ok {
excluded := false
for _, excludedCidr := range nsc.excludedCidrs {
@ -518,8 +518,8 @@ func (nsc *NetworkServicesController) cleanupStaleIPVSConfig(activeServiceEndpoi
}
for _, dst := range dsts {
validEp := false
for _, ep := range endpoints {
if ep == dst.Address.String() {
for _, epId := range endpointIds {
if epId == generateEndpointId(dst.Address.String(), strconv.Itoa(int(dst.Port))) {
validEp = true
break
}