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https://github.com/k3s-io/kubernetes.git
synced 2025-08-08 03:33:56 +00:00
Fix in kube-proxy for sctp ipset entries
Kube-proxy will add ipset entries for all node ips for an SCTP nodeport service. This will solve the problem 'SCTP nodeport service is not working for all IPs present in the node when ipvs is enabled. It is working only for node's InternalIP.'
This commit is contained in:
Subrata Paul
Subrata Paul
parent
0d579bfecf
commit
138b8b8aaa
@ -1202,42 +1202,57 @@ func (proxier *Proxier) syncProxyRules() {
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// Nodeports need SNAT, unless they're local.
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// ipset call
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var nodePortSet *IPSet
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var (
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nodePortSet *IPSet
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entries []*utilipset.Entry
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)
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switch protocol {
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case "tcp":
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nodePortSet = proxier.ipsetList[kubeNodePortSetTCP]
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entry = &utilipset.Entry{
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entries = []*utilipset.Entry{{
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// No need to provide ip info
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Port: svcInfo.NodePort(),
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Protocol: protocol,
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SetType: utilipset.BitmapPort,
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}
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}}
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case "udp":
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nodePortSet = proxier.ipsetList[kubeNodePortSetUDP]
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entry = &utilipset.Entry{
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entries = []*utilipset.Entry{{
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// No need to provide ip info
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Port: svcInfo.NodePort(),
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Protocol: protocol,
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SetType: utilipset.BitmapPort,
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}
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}}
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case "sctp":
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nodePortSet = proxier.ipsetList[kubeNodePortSetSCTP]
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entry = &utilipset.Entry{
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IP: proxier.nodeIP.String(),
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Port: svcInfo.NodePort(),
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Protocol: protocol,
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SetType: utilipset.HashIPPort,
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// Since hash ip:port is used for SCTP, all the nodeIPs to be used in the SCTP ipset entries.
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entries = []*utilipset.Entry{}
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for _, nodeIP := range nodeIPs {
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entries = append(entries, &utilipset.Entry{
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IP: nodeIP.String(),
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Port: svcInfo.NodePort(),
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Protocol: protocol,
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SetType: utilipset.HashIPPort,
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})
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}
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default:
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// It should never hit
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klog.Errorf("Unsupported protocol type: %s", protocol)
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}
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if nodePortSet != nil {
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if valid := nodePortSet.validateEntry(entry); !valid {
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klog.Errorf("%s", fmt.Sprintf(EntryInvalidErr, entry, nodePortSet.Name))
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entryInvalidErr := false
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for _, entry := range entries {
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if valid := nodePortSet.validateEntry(entry); !valid {
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klog.Errorf("%s", fmt.Sprintf(EntryInvalidErr, entry, nodePortSet.Name))
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entryInvalidErr = true
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break
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}
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nodePortSet.activeEntries.Insert(entry.String())
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}
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if entryInvalidErr {
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continue
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}
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nodePortSet.activeEntries.Insert(entry.String())
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}
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// Add externaltrafficpolicy=local type nodeport entry
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@ -1255,11 +1270,18 @@ func (proxier *Proxier) syncProxyRules() {
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klog.Errorf("Unsupported protocol type: %s", protocol)
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}
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if nodePortLocalSet != nil {
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if valid := nodePortLocalSet.validateEntry(entry); !valid {
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klog.Errorf("%s", fmt.Sprintf(EntryInvalidErr, entry, nodePortLocalSet.Name))
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entryInvalidErr := false
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for _, entry := range entries {
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if valid := nodePortLocalSet.validateEntry(entry); !valid {
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klog.Errorf("%s", fmt.Sprintf(EntryInvalidErr, entry, nodePortLocalSet.Name))
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entryInvalidErr = true
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break
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}
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nodePortLocalSet.activeEntries.Insert(entry.String())
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}
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if entryInvalidErr {
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continue
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}
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nodePortLocalSet.activeEntries.Insert(entry.String())
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}
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}
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@ -21,6 +21,7 @@ import (
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"fmt"
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"net"
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"reflect"
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"sort"
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"strings"
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"testing"
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@ -695,6 +696,236 @@ func TestNodePort(t *testing.T) {
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},
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},
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},
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{
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name: "node port service with protocol sctp on a node with multiple nodeIPs",
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services: []*v1.Service{
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makeTestService("ns1", "svc1", func(svc *v1.Service) {
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svc.Spec.Type = "NodePort"
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svc.Spec.ClusterIP = "10.20.30.41"
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svc.Spec.Ports = []v1.ServicePort{{
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Name: "p80",
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Port: int32(80),
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Protocol: v1.ProtocolSCTP,
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NodePort: int32(3001),
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}}
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}),
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},
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endpoints: []*v1.Endpoints{
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makeTestEndpoints("ns1", "svc1", func(ept *v1.Endpoints) {
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ept.Subsets = []v1.EndpointSubset{{
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Addresses: []v1.EndpointAddress{{
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IP: "10.180.0.1",
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}},
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Ports: []v1.EndpointPort{{
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Name: "p80",
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Port: int32(80),
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}},
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}}
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}),
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},
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nodeIPs: []net.IP{
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net.ParseIP("100.101.102.103"),
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net.ParseIP("100.101.102.104"),
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net.ParseIP("100.101.102.105"),
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net.ParseIP("2001:db8::1:1"),
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net.ParseIP("2001:db8::1:2"),
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net.ParseIP("2001:db8::1:3"),
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},
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nodePortAddresses: []string{},
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expectedIPVS: &ipvstest.FakeIPVS{
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Services: map[ipvstest.ServiceKey]*utilipvs.VirtualServer{
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{
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IP: "10.20.30.41",
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Port: 80,
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Protocol: "SCTP",
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}: {
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Address: net.ParseIP("10.20.30.41"),
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Protocol: "SCTP",
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Port: uint16(80),
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Scheduler: "rr",
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},
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{
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IP: "100.101.102.103",
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Port: 3001,
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Protocol: "SCTP",
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}: {
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Address: net.ParseIP("100.101.102.103"),
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Protocol: "SCTP",
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Port: uint16(3001),
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Scheduler: "rr",
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},
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{
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IP: "100.101.102.104",
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Port: 3001,
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Protocol: "SCTP",
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}: {
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Address: net.ParseIP("100.101.102.104"),
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Protocol: "SCTP",
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Port: uint16(3001),
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Scheduler: "rr",
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},
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{
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IP: "100.101.102.105",
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Port: 3001,
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Protocol: "SCTP",
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}: {
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Address: net.ParseIP("100.101.102.105"),
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Protocol: "SCTP",
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Port: uint16(3001),
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Scheduler: "rr",
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},
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{
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IP: "2001:db8::1:1",
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Port: 3001,
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Protocol: "SCTP",
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}: {
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Address: net.ParseIP("2001:db8::1:1"),
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Protocol: "SCTP",
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Port: uint16(3001),
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Scheduler: "rr",
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},
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{
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IP: "2001:db8::1:2",
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Port: 3001,
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Protocol: "SCTP",
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}: {
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Address: net.ParseIP("2001:db8::1:2"),
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Protocol: "SCTP",
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Port: uint16(3001),
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Scheduler: "rr",
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},
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{
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IP: "2001:db8::1:3",
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Port: 3001,
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Protocol: "SCTP",
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}: {
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Address: net.ParseIP("2001:db8::1:3"),
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Protocol: "SCTP",
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Port: uint16(3001),
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Scheduler: "rr",
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},
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},
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Destinations: map[ipvstest.ServiceKey][]*utilipvs.RealServer{
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{
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IP: "10.20.30.41",
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Port: 80,
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Protocol: "SCTP",
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}: {
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{
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Address: net.ParseIP("10.180.0.1"),
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Port: uint16(80),
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Weight: 1,
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},
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},
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{
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IP: "100.101.102.103",
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Port: 3001,
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Protocol: "SCTP",
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}: {
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{
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Address: net.ParseIP("10.180.0.1"),
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Port: uint16(80),
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Weight: 1,
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},
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},
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{
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IP: "100.101.102.104",
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Port: 3001,
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Protocol: "SCTP",
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}: {
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{
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Address: net.ParseIP("10.180.0.1"),
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Port: uint16(80),
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Weight: 1,
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},
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},
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{
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IP: "100.101.102.105",
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Port: 3001,
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Protocol: "SCTP",
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}: {
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{
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Address: net.ParseIP("10.180.0.1"),
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Port: uint16(80),
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Weight: 1,
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},
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},
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{
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IP: "2001:db8::1:1",
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Port: 3001,
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Protocol: "SCTP",
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}: {
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{
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Address: net.ParseIP("10.180.0.1"),
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Port: uint16(80),
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Weight: 1,
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},
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},
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{
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IP: "2001:db8::1:2",
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Port: 3001,
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Protocol: "SCTP",
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}: {
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{
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Address: net.ParseIP("10.180.0.1"),
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Port: uint16(80),
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Weight: 1,
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},
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},
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{
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IP: "2001:db8::1:3",
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Port: 3001,
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Protocol: "SCTP",
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}: {
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{
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Address: net.ParseIP("10.180.0.1"),
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Port: uint16(80),
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Weight: 1,
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},
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},
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},
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},
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expectedIPSets: netlinktest.ExpectedIPSet{
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kubeNodePortSetSCTP: {
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{
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IP: "100.101.102.103",
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Port: 3001,
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Protocol: strings.ToLower(string(v1.ProtocolSCTP)),
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SetType: utilipset.HashIPPort,
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},
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{
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IP: "100.101.102.104",
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Port: 3001,
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Protocol: strings.ToLower(string(v1.ProtocolSCTP)),
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SetType: utilipset.HashIPPort,
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},
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{
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IP: "100.101.102.105",
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Port: 3001,
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Protocol: strings.ToLower(string(v1.ProtocolSCTP)),
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SetType: utilipset.HashIPPort,
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},
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{
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IP: "2001:db8::1:1",
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Port: 3001,
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Protocol: strings.ToLower(string(v1.ProtocolSCTP)),
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SetType: utilipset.HashIPPort,
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},
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{
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IP: "2001:db8::1:2",
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Port: 3001,
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Protocol: strings.ToLower(string(v1.ProtocolSCTP)),
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SetType: utilipset.HashIPPort,
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},
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{
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IP: "2001:db8::1:3",
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Port: 3001,
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Protocol: strings.ToLower(string(v1.ProtocolSCTP)),
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SetType: utilipset.HashIPPort,
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},
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},
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},
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},
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}
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for _, test := range tests {
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@ -2897,10 +3128,14 @@ func checkIPSet(t *testing.T, fp *Proxier, ipSet netlinktest.ExpectedIPSet) {
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t.Errorf("Check ipset entries failed for ipset: %q, expect %d, got %d", set, len(entries), len(ents))
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continue
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}
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if len(entries) == 1 {
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if ents[0] != entries[0].String() {
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t.Errorf("Check ipset entries failed for ipset: %q", set)
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}
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expectedEntries := []string{}
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for _, entry := range entries {
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expectedEntries = append(expectedEntries, entry.String())
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}
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sort.Strings(ents)
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sort.Strings(expectedEntries)
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if !reflect.DeepEqual(ents, expectedEntries) {
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t.Errorf("Check ipset entries failed for ipset: %q", set)
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}
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}
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}
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