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kubernetes/pkg/proxy/iptables/proxier_test.go
Rob Scott 8f9483d827
Fixing bugs related to Endpoint Slices 
This should fix a bug that could break masters when the EndpointSlice
feature gate was enabled. This was all tied to how the apiserver creates
and manages it's own services and endpoints (or in this case endpoint
slices). Consumers of endpoint slices also need to know about the
corresponding service. Previously we were trying to set an owner
reference here for this purpose, but that came with potential downsides
and increased complexity. This commit changes behavior of the apiserver
endpointslice integration to set the service name label instead of owner
references, and simplifies consumer logic to reference that (both are
set by the EndpointSlice controller).

Additionally, this should fix a bug with the EndpointSlice GenerateName
value that had previously been set with a "." as a suffix.
2019-09-04 09:09:32 -07:00

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/*
Copyright 2015 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package iptables
import (
"bytes"
"fmt"
"net"
"reflect"
"strconv"
"strings"
"testing"
"time"
"k8s.io/klog"
"github.com/stretchr/testify/assert"
v1 "k8s.io/api/core/v1"
discovery "k8s.io/api/discovery/v1alpha1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/kubernetes/pkg/proxy"
utilproxy "k8s.io/kubernetes/pkg/proxy/util"
utilproxytest "k8s.io/kubernetes/pkg/proxy/util/testing"
"k8s.io/kubernetes/pkg/util/async"
"k8s.io/kubernetes/pkg/util/conntrack"
utiliptables "k8s.io/kubernetes/pkg/util/iptables"
iptablestest "k8s.io/kubernetes/pkg/util/iptables/testing"
"k8s.io/utils/exec"
fakeexec "k8s.io/utils/exec/testing"
utilpointer "k8s.io/utils/pointer"
)
func checkAllLines(t *testing.T, table utiliptables.Table, save []byte, expectedLines map[utiliptables.Chain]string) {
chainLines := utiliptables.GetChainLines(table, save)
for chain, lineBytes := range chainLines {
line := string(lineBytes)
if expected, exists := expectedLines[chain]; exists {
if expected != line {
t.Errorf("getChainLines expected chain line not present. For chain: %s Expected: %s Got: %s", chain, expected, line)
}
} else {
t.Errorf("getChainLines expected chain not present: %s", chain)
}
}
}
func TestGetChainLines(t *testing.T) {
iptablesSave := `# Generated by iptables-save v1.4.7 on Wed Oct 29 14:56:01 2014
*nat
:PREROUTING ACCEPT [2136997:197881818]
:POSTROUTING ACCEPT [4284525:258542680]
:OUTPUT ACCEPT [5901660:357267963]
-A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER
COMMIT
# Completed on Wed Oct 29 14:56:01 2014`
expected := map[utiliptables.Chain]string{
utiliptables.ChainPrerouting: ":PREROUTING ACCEPT [2136997:197881818]",
utiliptables.ChainPostrouting: ":POSTROUTING ACCEPT [4284525:258542680]",
utiliptables.ChainOutput: ":OUTPUT ACCEPT [5901660:357267963]",
}
checkAllLines(t, utiliptables.TableNAT, []byte(iptablesSave), expected)
}
func TestGetChainLinesMultipleTables(t *testing.T) {
iptablesSave := `# Generated by iptables-save v1.4.21 on Fri Aug 7 14:47:37 2015
*nat
:PREROUTING ACCEPT [2:138]
:INPUT ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
:DOCKER - [0:0]
:KUBE-NODEPORT-CONTAINER - [0:0]
:KUBE-NODEPORT-HOST - [0:0]
:KUBE-PORTALS-CONTAINER - [0:0]
:KUBE-PORTALS-HOST - [0:0]
:KUBE-SVC-1111111111111111 - [0:0]
:KUBE-SVC-2222222222222222 - [0:0]
:KUBE-SVC-3333333333333333 - [0:0]
:KUBE-SVC-4444444444444444 - [0:0]
:KUBE-SVC-5555555555555555 - [0:0]
:KUBE-SVC-6666666666666666 - [0:0]
-A PREROUTING -m comment --comment "handle ClusterIPs; NOTE: this must be before the NodePort rules" -j KUBE-PORTALS-CONTAINER
-A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER
-A PREROUTING -m addrtype --dst-type LOCAL -m comment --comment "handle service NodePorts; NOTE: this must be the last rule in the chain" -j KUBE-NODEPORT-CONTAINER
-A OUTPUT -m comment --comment "handle ClusterIPs; NOTE: this must be before the NodePort rules" -j KUBE-PORTALS-HOST
-A OUTPUT ! -d 127.0.0.0/8 -m addrtype --dst-type LOCAL -j DOCKER
-A OUTPUT -m addrtype --dst-type LOCAL -m comment --comment "handle service NodePorts; NOTE: this must be the last rule in the chain" -j KUBE-NODEPORT-HOST
-A POSTROUTING -s 10.246.1.0/24 ! -o cbr0 -j MASQUERADE
-A POSTROUTING -s 10.0.2.15/32 -d 10.0.2.15/32 -m comment --comment "handle pod connecting to self" -j MASQUERADE
-A KUBE-PORTALS-CONTAINER -d 10.247.0.1/32 -p tcp -m comment --comment "portal for default/kubernetes:" -m state --state NEW -m tcp --dport 443 -j KUBE-SVC-5555555555555555
-A KUBE-PORTALS-CONTAINER -d 10.247.0.10/32 -p udp -m comment --comment "portal for kube-system/kube-dns:dns" -m state --state NEW -m udp --dport 53 -j KUBE-SVC-6666666666666666
-A KUBE-PORTALS-CONTAINER -d 10.247.0.10/32 -p tcp -m comment --comment "portal for kube-system/kube-dns:dns-tcp" -m state --state NEW -m tcp --dport 53 -j KUBE-SVC-2222222222222222
-A KUBE-PORTALS-HOST -d 10.247.0.1/32 -p tcp -m comment --comment "portal for default/kubernetes:" -m state --state NEW -m tcp --dport 443 -j KUBE-SVC-5555555555555555
-A KUBE-PORTALS-HOST -d 10.247.0.10/32 -p udp -m comment --comment "portal for kube-system/kube-dns:dns" -m state --state NEW -m udp --dport 53 -j KUBE-SVC-6666666666666666
-A KUBE-PORTALS-HOST -d 10.247.0.10/32 -p tcp -m comment --comment "portal for kube-system/kube-dns:dns-tcp" -m state --state NEW -m tcp --dport 53 -j KUBE-SVC-2222222222222222
-A KUBE-SVC-1111111111111111 -p udp -m comment --comment "kube-system/kube-dns:dns" -m recent --set --name KUBE-SVC-1111111111111111 --mask 255.255.255.255 --rsource -j DNAT --to-destination 10.246.1.2:53
-A KUBE-SVC-2222222222222222 -m comment --comment "kube-system/kube-dns:dns-tcp" -j KUBE-SVC-3333333333333333
-A KUBE-SVC-3333333333333333 -p tcp -m comment --comment "kube-system/kube-dns:dns-tcp" -m recent --set --name KUBE-SVC-3333333333333333 --mask 255.255.255.255 --rsource -j DNAT --to-destination 10.246.1.2:53
-A KUBE-SVC-4444444444444444 -p tcp -m comment --comment "default/kubernetes:" -m recent --set --name KUBE-SVC-4444444444444444 --mask 255.255.255.255 --rsource -j DNAT --to-destination 10.245.1.2:443
-A KUBE-SVC-5555555555555555 -m comment --comment "default/kubernetes:" -j KUBE-SVC-4444444444444444
-A KUBE-SVC-6666666666666666 -m comment --comment "kube-system/kube-dns:dns" -j KUBE-SVC-1111111111111111
COMMIT
# Completed on Fri Aug 7 14:47:37 2015
# Generated by iptables-save v1.4.21 on Fri Aug 7 14:47:37 2015
*filter
:INPUT ACCEPT [17514:83115836]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [8909:688225]
:DOCKER - [0:0]
-A FORWARD -o cbr0 -j DOCKER
-A FORWARD -o cbr0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -i cbr0 ! -o cbr0 -j ACCEPT
-A FORWARD -i cbr0 -o cbr0 -j ACCEPT
COMMIT
`
expected := map[utiliptables.Chain]string{
utiliptables.ChainPrerouting: ":PREROUTING ACCEPT [2:138]",
utiliptables.Chain("INPUT"): ":INPUT ACCEPT [0:0]",
utiliptables.Chain("OUTPUT"): ":OUTPUT ACCEPT [0:0]",
utiliptables.ChainPostrouting: ":POSTROUTING ACCEPT [0:0]",
utiliptables.Chain("DOCKER"): ":DOCKER - [0:0]",
utiliptables.Chain("KUBE-NODEPORT-CONTAINER"): ":KUBE-NODEPORT-CONTAINER - [0:0]",
utiliptables.Chain("KUBE-NODEPORT-HOST"): ":KUBE-NODEPORT-HOST - [0:0]",
utiliptables.Chain("KUBE-PORTALS-CONTAINER"): ":KUBE-PORTALS-CONTAINER - [0:0]",
utiliptables.Chain("KUBE-PORTALS-HOST"): ":KUBE-PORTALS-HOST - [0:0]",
utiliptables.Chain("KUBE-SVC-1111111111111111"): ":KUBE-SVC-1111111111111111 - [0:0]",
utiliptables.Chain("KUBE-SVC-2222222222222222"): ":KUBE-SVC-2222222222222222 - [0:0]",
utiliptables.Chain("KUBE-SVC-3333333333333333"): ":KUBE-SVC-3333333333333333 - [0:0]",
utiliptables.Chain("KUBE-SVC-4444444444444444"): ":KUBE-SVC-4444444444444444 - [0:0]",
utiliptables.Chain("KUBE-SVC-5555555555555555"): ":KUBE-SVC-5555555555555555 - [0:0]",
utiliptables.Chain("KUBE-SVC-6666666666666666"): ":KUBE-SVC-6666666666666666 - [0:0]",
}
checkAllLines(t, utiliptables.TableNAT, []byte(iptablesSave), expected)
}
func TestDeleteEndpointConnections(t *testing.T) {
const (
UDP = v1.ProtocolUDP
TCP = v1.ProtocolTCP
SCTP = v1.ProtocolSCTP
)
testCases := []struct {
description string
svcName string
svcIP string
svcPort int32
protocol v1.Protocol
endpoint string // IP:port endpoint
epSvcPair proxy.ServiceEndpoint // Will be generated by test
simulatedErr string
}{
{
description: "V4 UDP",
svcName: "v4-udp",
svcIP: "10.96.1.1",
svcPort: 80,
protocol: UDP,
endpoint: "10.240.0.3:80",
}, {
description: "V4 TCP",
svcName: "v4-tcp",
svcIP: "10.96.2.2",
svcPort: 80,
protocol: TCP,
endpoint: "10.240.0.4:80",
}, {
description: "V4 SCTP",
svcName: "v4-sctp",
svcIP: "10.96.3.3",
svcPort: 80,
protocol: SCTP,
endpoint: "10.240.0.5:80",
}, {
description: "V4 UDP, nothing to delete, benign error",
svcName: "v4-udp-nothing-to-delete",
svcIP: "10.96.1.1",
svcPort: 80,
protocol: UDP,
endpoint: "10.240.0.3:80",
simulatedErr: conntrack.NoConnectionToDelete,
}, {
description: "V4 UDP, unexpected error, should be glogged",
svcName: "v4-udp-simulated-error",
svcIP: "10.96.1.1",
svcPort: 80,
protocol: UDP,
endpoint: "10.240.0.3:80",
simulatedErr: "simulated error",
}, {
description: "V6 UDP",
svcName: "v6-udp",
svcIP: "fd00:1234::20",
svcPort: 80,
protocol: UDP,
endpoint: "[2001:db8::2]:80",
}, {
description: "V6 TCP",
svcName: "v6-tcp",
svcIP: "fd00:1234::30",
svcPort: 80,
protocol: TCP,
endpoint: "[2001:db8::3]:80",
}, {
description: "V6 SCTP",
svcName: "v6-sctp",
svcIP: "fd00:1234::40",
svcPort: 80,
protocol: SCTP,
endpoint: "[2001:db8::4]:80",
},
}
// Create a fake executor for the conntrack utility. This should only be
// invoked for UDP connections, since no conntrack cleanup is needed for TCP
fcmd := fakeexec.FakeCmd{}
fexec := fakeexec.FakeExec{
LookPathFunc: func(cmd string) (string, error) { return cmd, nil },
}
execFunc := func(cmd string, args ...string) exec.Cmd {
return fakeexec.InitFakeCmd(&fcmd, cmd, args...)
}
for _, tc := range testCases {
if tc.protocol == UDP {
var cmdOutput string
var simErr error
if tc.simulatedErr == "" {
cmdOutput = "1 flow entries have been deleted"
} else {
simErr = fmt.Errorf(tc.simulatedErr)
}
cmdFunc := func() ([]byte, error) { return []byte(cmdOutput), simErr }
fcmd.CombinedOutputScript = append(fcmd.CombinedOutputScript, cmdFunc)
fexec.CommandScript = append(fexec.CommandScript, execFunc)
}
}
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
fp.exec = &fexec
for _, tc := range testCases {
makeServiceMap(fp,
makeTestService("ns1", tc.svcName, func(svc *v1.Service) {
svc.Spec.ClusterIP = tc.svcIP
svc.Spec.Ports = []v1.ServicePort{{
Name: "p80",
Port: tc.svcPort,
Protocol: tc.protocol,
}}
svc.Spec.ExternalTrafficPolicy = v1.ServiceExternalTrafficPolicyTypeLocal
}),
)
proxy.UpdateServiceMap(fp.serviceMap, fp.serviceChanges)
}
// Run the test cases
for _, tc := range testCases {
priorExecs := fexec.CommandCalls
priorGlogErrs := klog.Stats.Error.Lines()
svc := proxy.ServicePortName{
NamespacedName: types.NamespacedName{Namespace: "ns1", Name: tc.svcName},
Port: "p80",
}
input := []proxy.ServiceEndpoint{
{
Endpoint: tc.endpoint,
ServicePortName: svc,
},
}
fp.deleteEndpointConnections(input)
// For UDP connections, check the executed conntrack command
var expExecs int
if tc.protocol == UDP {
isIPv6 := func(ip string) bool {
netIP := net.ParseIP(ip)
if netIP.To4() == nil {
return true
}
return false
}
endpointIP := utilproxy.IPPart(tc.endpoint)
expectCommand := fmt.Sprintf("conntrack -D --orig-dst %s --dst-nat %s -p udp", tc.svcIP, endpointIP)
if isIPv6(endpointIP) {
expectCommand += " -f ipv6"
}
actualCommand := strings.Join(fcmd.CombinedOutputLog[fexec.CommandCalls-1], " ")
if actualCommand != expectCommand {
t.Errorf("%s: Expected command: %s, but executed %s", tc.description, expectCommand, actualCommand)
}
expExecs = 1
}
// Check the number of times conntrack was executed
execs := fexec.CommandCalls - priorExecs
if execs != expExecs {
t.Errorf("%s: Expected conntrack to be executed %d times, but got %d", tc.description, expExecs, execs)
}
// Check the number of new glog errors
var expGlogErrs int64
if tc.simulatedErr != "" && tc.simulatedErr != conntrack.NoConnectionToDelete {
expGlogErrs = 1
}
glogErrs := klog.Stats.Error.Lines() - priorGlogErrs
if glogErrs != expGlogErrs {
t.Errorf("%s: Expected %d glogged errors, but got %d", tc.description, expGlogErrs, glogErrs)
}
}
}
// fakePortOpener implements portOpener.
type fakePortOpener struct {
openPorts []*utilproxy.LocalPort
}
// OpenLocalPort fakes out the listen() and bind() used by syncProxyRules
// to lock a local port.
func (f *fakePortOpener) OpenLocalPort(lp *utilproxy.LocalPort) (utilproxy.Closeable, error) {
f.openPorts = append(f.openPorts, lp)
return nil, nil
}
type fakeHealthChecker struct {
services map[types.NamespacedName]uint16
endpoints map[types.NamespacedName]int
}
func newFakeHealthChecker() *fakeHealthChecker {
return &fakeHealthChecker{
services: map[types.NamespacedName]uint16{},
endpoints: map[types.NamespacedName]int{},
}
}
func (fake *fakeHealthChecker) SyncServices(newServices map[types.NamespacedName]uint16) error {
fake.services = newServices
return nil
}
func (fake *fakeHealthChecker) SyncEndpoints(newEndpoints map[types.NamespacedName]int) error {
fake.endpoints = newEndpoints
return nil
}
const testHostname = "test-hostname"
func NewFakeProxier(ipt utiliptables.Interface, endpointSlicesEnabled bool) *Proxier {
// TODO: Call NewProxier after refactoring out the goroutine
// invocation into a Run() method.
p := &Proxier{
exec: &fakeexec.FakeExec{},
serviceMap: make(proxy.ServiceMap),
serviceChanges: proxy.NewServiceChangeTracker(newServiceInfo, nil, nil),
endpointsMap: make(proxy.EndpointsMap),
endpointsChanges: proxy.NewEndpointChangeTracker(testHostname, newEndpointInfo, nil, nil, endpointSlicesEnabled),
iptables: ipt,
clusterCIDR: "10.0.0.0/24",
hostname: testHostname,
portsMap: make(map[utilproxy.LocalPort]utilproxy.Closeable),
portMapper: &fakePortOpener{[]*utilproxy.LocalPort{}},
healthChecker: newFakeHealthChecker(),
precomputedProbabilities: make([]string, 0, 1001),
iptablesData: bytes.NewBuffer(nil),
existingFilterChainsData: bytes.NewBuffer(nil),
filterChains: bytes.NewBuffer(nil),
filterRules: bytes.NewBuffer(nil),
natChains: bytes.NewBuffer(nil),
natRules: bytes.NewBuffer(nil),
nodePortAddresses: make([]string, 0),
networkInterfacer: utilproxytest.NewFakeNetwork(),
}
p.setInitialized(true)
p.syncRunner = async.NewBoundedFrequencyRunner("test-sync-runner", p.syncProxyRules, 0, time.Minute, 1)
return p
}
func hasSessionAffinityRule(rules []iptablestest.Rule) bool {
for _, r := range rules {
if _, ok := r[iptablestest.Recent]; ok {
return true
}
}
return false
}
func hasJump(rules []iptablestest.Rule, destChain, destIP string, destPort int) bool {
destPortStr := strconv.Itoa(destPort)
match := false
for _, r := range rules {
if r[iptablestest.Jump] == destChain {
match = true
if destIP != "" {
if strings.Contains(r[iptablestest.Destination], destIP) && (strings.Contains(r[iptablestest.DPort], destPortStr) || r[iptablestest.DPort] == "") {
return true
}
match = false
}
if destPort != 0 {
if strings.Contains(r[iptablestest.DPort], destPortStr) && (strings.Contains(r[iptablestest.Destination], destIP) || r[iptablestest.Destination] == "") {
return true
}
match = false
}
}
}
return match
}
func hasSrcType(rules []iptablestest.Rule, srcType string) bool {
for _, r := range rules {
if r[iptablestest.SrcType] != srcType {
continue
}
return true
}
return false
}
func TestHasJump(t *testing.T) {
testCases := map[string]struct {
rules []iptablestest.Rule
destChain string
destIP string
destPort int
expected bool
}{
"case 1": {
// Match the 1st rule(both dest IP and dest Port)
rules: []iptablestest.Rule{
{"-d ": "10.20.30.41/32", "--dport ": "80", "-p ": "tcp", "-j ": "REJECT"},
{"--dport ": "3001", "-p ": "tcp", "-j ": "KUBE-MARK-MASQ"},
},
destChain: "REJECT",
destIP: "10.20.30.41",
destPort: 80,
expected: true,
},
"case 2": {
// Match the 2nd rule(dest Port)
rules: []iptablestest.Rule{
{"-d ": "10.20.30.41/32", "-p ": "tcp", "-j ": "REJECT"},
{"--dport ": "3001", "-p ": "tcp", "-j ": "REJECT"},
},
destChain: "REJECT",
destIP: "",
destPort: 3001,
expected: true,
},
"case 3": {
// Match both dest IP and dest Port
rules: []iptablestest.Rule{
{"-d ": "1.2.3.4/32", "--dport ": "80", "-p ": "tcp", "-j ": "KUBE-XLB-GF53O3C2HZEXL2XN"},
},
destChain: "KUBE-XLB-GF53O3C2HZEXL2XN",
destIP: "1.2.3.4",
destPort: 80,
expected: true,
},
"case 4": {
// Match dest IP but doesn't match dest Port
rules: []iptablestest.Rule{
{"-d ": "1.2.3.4/32", "--dport ": "80", "-p ": "tcp", "-j ": "KUBE-XLB-GF53O3C2HZEXL2XN"},
},
destChain: "KUBE-XLB-GF53O3C2HZEXL2XN",
destIP: "1.2.3.4",
destPort: 8080,
expected: false,
},
"case 5": {
// Match dest Port but doesn't match dest IP
rules: []iptablestest.Rule{
{"-d ": "1.2.3.4/32", "--dport ": "80", "-p ": "tcp", "-j ": "KUBE-XLB-GF53O3C2HZEXL2XN"},
},
destChain: "KUBE-XLB-GF53O3C2HZEXL2XN",
destIP: "10.20.30.40",
destPort: 80,
expected: false,
},
"case 6": {
// Match the 2nd rule(dest IP)
rules: []iptablestest.Rule{
{"-d ": "10.20.30.41/32", "-p ": "tcp", "-j ": "REJECT"},
{"-d ": "1.2.3.4/32", "-p ": "tcp", "-j ": "REJECT"},
{"--dport ": "3001", "-p ": "tcp", "-j ": "REJECT"},
},
destChain: "REJECT",
destIP: "1.2.3.4",
destPort: 8080,
expected: true,
},
"case 7": {
// Match the 2nd rule(dest Port)
rules: []iptablestest.Rule{
{"-d ": "10.20.30.41/32", "-p ": "tcp", "-j ": "REJECT"},
{"--dport ": "3001", "-p ": "tcp", "-j ": "REJECT"},
},
destChain: "REJECT",
destIP: "1.2.3.4",
destPort: 3001,
expected: true,
},
"case 8": {
// Match the 1st rule(dest IP)
rules: []iptablestest.Rule{
{"-d ": "10.20.30.41/32", "-p ": "tcp", "-j ": "REJECT"},
{"--dport ": "3001", "-p ": "tcp", "-j ": "REJECT"},
},
destChain: "REJECT",
destIP: "10.20.30.41",
destPort: 8080,
expected: true,
},
"case 9": {
rules: []iptablestest.Rule{
{"-j ": "KUBE-SEP-LWSOSDSHMKPJHHJV"},
},
destChain: "KUBE-SEP-LWSOSDSHMKPJHHJV",
destIP: "",
destPort: 0,
expected: true,
},
"case 10": {
rules: []iptablestest.Rule{
{"-j ": "KUBE-SEP-FOO"},
},
destChain: "KUBE-SEP-BAR",
destIP: "",
destPort: 0,
expected: false,
},
}
for k, tc := range testCases {
if got := hasJump(tc.rules, tc.destChain, tc.destIP, tc.destPort); got != tc.expected {
t.Errorf("%v: expected %v, got %v", k, tc.expected, got)
}
}
}
func hasDNAT(rules []iptablestest.Rule, endpoint string) bool {
for _, r := range rules {
if r[iptablestest.ToDest] == endpoint {
return true
}
}
return false
}
func errorf(msg string, rules []iptablestest.Rule, t *testing.T) {
for _, r := range rules {
t.Logf("%q", r)
}
t.Errorf("%v", msg)
}
func TestClusterIPReject(t *testing.T) {
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
svcIP := "10.20.30.41"
svcPort := 80
svcPortName := proxy.ServicePortName{
NamespacedName: makeNSN("ns1", "svc1"),
Port: "p80",
}
makeServiceMap(fp,
makeTestService(svcPortName.Namespace, svcPortName.Name, func(svc *v1.Service) {
svc.Spec.ClusterIP = svcIP
svc.Spec.Ports = []v1.ServicePort{{
Name: svcPortName.Port,
Port: int32(svcPort),
Protocol: v1.ProtocolTCP,
}}
}),
)
makeEndpointsMap(fp)
fp.syncProxyRules()
svcChain := string(servicePortChainName(svcPortName.String(), strings.ToLower(string(v1.ProtocolTCP))))
svcRules := ipt.GetRules(svcChain)
if len(svcRules) != 0 {
errorf(fmt.Sprintf("Unexpected rule for chain %v service %v without endpoints", svcChain, svcPortName), svcRules, t)
}
kubeSvcRules := ipt.GetRules(string(kubeServicesChain))
if !hasJump(kubeSvcRules, iptablestest.Reject, svcIP, svcPort) {
errorf(fmt.Sprintf("Failed to find a %v rule for service %v with no endpoints", iptablestest.Reject, svcPortName), kubeSvcRules, t)
}
}
func TestClusterIPEndpointsJump(t *testing.T) {
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
svcIP := "10.20.30.41"
svcPort := 80
svcPortName := proxy.ServicePortName{
NamespacedName: makeNSN("ns1", "svc1"),
Port: "p80",
}
makeServiceMap(fp,
makeTestService(svcPortName.Namespace, svcPortName.Name, func(svc *v1.Service) {
svc.Spec.ClusterIP = svcIP
svc.Spec.Ports = []v1.ServicePort{{
Name: svcPortName.Port,
Port: int32(svcPort),
Protocol: v1.ProtocolTCP,
}}
}),
)
epIP := "10.180.0.1"
makeEndpointsMap(fp,
makeTestEndpoints(svcPortName.Namespace, svcPortName.Name, func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: epIP,
}},
Ports: []v1.EndpointPort{{
Name: svcPortName.Port,
Port: int32(svcPort),
}},
}}
}),
)
fp.syncProxyRules()
epStr := fmt.Sprintf("%s:%d", epIP, svcPort)
svcChain := string(servicePortChainName(svcPortName.String(), strings.ToLower(string(v1.ProtocolTCP))))
epChain := string(servicePortEndpointChainName(svcPortName.String(), strings.ToLower(string(v1.ProtocolTCP)), epStr))
kubeSvcRules := ipt.GetRules(string(kubeServicesChain))
if !hasJump(kubeSvcRules, svcChain, svcIP, svcPort) {
errorf(fmt.Sprintf("Failed to find jump from KUBE-SERVICES to %v chain", svcChain), kubeSvcRules, t)
}
svcRules := ipt.GetRules(svcChain)
if !hasJump(svcRules, epChain, "", 0) {
errorf(fmt.Sprintf("Failed to jump to ep chain %v", epChain), svcRules, t)
}
epRules := ipt.GetRules(epChain)
if !hasDNAT(epRules, epStr) {
errorf(fmt.Sprintf("Endpoint chain %v lacks DNAT to %v", epChain, epStr), epRules, t)
}
}
func TestLoadBalancer(t *testing.T) {
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
svcIP := "10.20.30.41"
svcPort := 80
svcNodePort := 3001
svcLBIP := "1.2.3.4"
svcPortName := proxy.ServicePortName{
NamespacedName: makeNSN("ns1", "svc1"),
Port: "p80",
}
makeServiceMap(fp,
makeTestService(svcPortName.Namespace, svcPortName.Name, func(svc *v1.Service) {
svc.Spec.Type = "LoadBalancer"
svc.Spec.ClusterIP = 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: svcLBIP,
}}
}),
)
epIP := "10.180.0.1"
makeEndpointsMap(fp,
makeTestEndpoints(svcPortName.Namespace, svcPortName.Name, func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: epIP,
}},
Ports: []v1.EndpointPort{{
Name: svcPortName.Port,
Port: int32(svcPort),
}},
}}
}),
)
fp.syncProxyRules()
proto := strings.ToLower(string(v1.ProtocolTCP))
fwChain := string(serviceFirewallChainName(svcPortName.String(), proto))
svcChain := string(servicePortChainName(svcPortName.String(), proto))
kubeSvcRules := ipt.GetRules(string(kubeServicesChain))
if !hasJump(kubeSvcRules, fwChain, svcLBIP, svcPort) {
errorf(fmt.Sprintf("Failed to find jump to firewall chain %v", fwChain), kubeSvcRules, t)
}
fwRules := ipt.GetRules(fwChain)
if !hasJump(fwRules, svcChain, "", 0) || !hasJump(fwRules, string(KubeMarkMasqChain), "", 0) {
errorf(fmt.Sprintf("Failed to find jump from firewall chain %v to svc chain %v", fwChain, svcChain), fwRules, t)
}
}
func TestNodePort(t *testing.T) {
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
svcIP := "10.20.30.41"
svcPort := 80
svcNodePort := 3001
svcPortName := proxy.ServicePortName{
NamespacedName: makeNSN("ns1", "svc1"),
Port: "p80",
}
makeServiceMap(fp,
makeTestService(svcPortName.Namespace, svcPortName.Name, func(svc *v1.Service) {
svc.Spec.Type = "NodePort"
svc.Spec.ClusterIP = svcIP
svc.Spec.Ports = []v1.ServicePort{{
Name: svcPortName.Port,
Port: int32(svcPort),
Protocol: v1.ProtocolTCP,
NodePort: int32(svcNodePort),
}}
}),
)
epIP := "10.180.0.1"
makeEndpointsMap(fp,
makeTestEndpoints(svcPortName.Namespace, svcPortName.Name, func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: epIP,
}},
Ports: []v1.EndpointPort{{
Name: svcPortName.Port,
Port: int32(svcPort),
}},
}}
}),
)
itf := net.Interface{Index: 0, MTU: 0, Name: "lo", HardwareAddr: nil, Flags: 0}
addrs := []net.Addr{utilproxytest.AddrStruct{Val: "127.0.0.1/16"}}
itf1 := net.Interface{Index: 1, MTU: 0, Name: "eth1", HardwareAddr: nil, Flags: 0}
addrs1 := []net.Addr{utilproxytest.AddrStruct{Val: "::1/128"}}
fp.networkInterfacer.(*utilproxytest.FakeNetwork).AddInterfaceAddr(&itf, addrs)
fp.networkInterfacer.(*utilproxytest.FakeNetwork).AddInterfaceAddr(&itf1, addrs1)
fp.nodePortAddresses = []string{}
fp.syncProxyRules()
proto := strings.ToLower(string(v1.ProtocolTCP))
svcChain := string(servicePortChainName(svcPortName.String(), proto))
kubeNodePortRules := ipt.GetRules(string(kubeNodePortsChain))
if !hasJump(kubeNodePortRules, svcChain, "", svcNodePort) {
errorf(fmt.Sprintf("Failed to find jump to svc chain %v", svcChain), kubeNodePortRules, t)
}
}
func TestExternalIPsReject(t *testing.T) {
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
svcIP := "10.20.30.41"
svcPort := 80
svcExternalIPs := "50.60.70.81"
svcPortName := proxy.ServicePortName{
NamespacedName: makeNSN("ns1", "svc1"),
Port: "p80",
}
makeServiceMap(fp,
makeTestService(svcPortName.Namespace, svcPortName.Name, func(svc *v1.Service) {
svc.Spec.Type = "ClusterIP"
svc.Spec.ClusterIP = svcIP
svc.Spec.ExternalIPs = []string{svcExternalIPs}
svc.Spec.Ports = []v1.ServicePort{{
Name: svcPortName.Port,
Port: int32(svcPort),
Protocol: v1.ProtocolTCP,
TargetPort: intstr.FromInt(svcPort),
}}
}),
)
makeEndpointsMap(fp)
fp.syncProxyRules()
kubeSvcRules := ipt.GetRules(string(kubeExternalServicesChain))
if !hasJump(kubeSvcRules, iptablestest.Reject, svcExternalIPs, svcPort) {
errorf(fmt.Sprintf("Failed to find a %v rule for externalIP %v with no endpoints", iptablestest.Reject, svcPortName), kubeSvcRules, t)
}
}
func TestNodePortReject(t *testing.T) {
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
svcIP := "10.20.30.41"
svcPort := 80
svcNodePort := 3001
svcPortName := proxy.ServicePortName{
NamespacedName: makeNSN("ns1", "svc1"),
Port: "p80",
}
makeServiceMap(fp,
makeTestService(svcPortName.Namespace, svcPortName.Name, func(svc *v1.Service) {
svc.Spec.Type = "NodePort"
svc.Spec.ClusterIP = svcIP
svc.Spec.Ports = []v1.ServicePort{{
Name: svcPortName.Port,
Port: int32(svcPort),
Protocol: v1.ProtocolTCP,
NodePort: int32(svcNodePort),
}}
}),
)
makeEndpointsMap(fp)
fp.syncProxyRules()
kubeSvcRules := ipt.GetRules(string(kubeExternalServicesChain))
if !hasJump(kubeSvcRules, iptablestest.Reject, svcIP, svcNodePort) {
errorf(fmt.Sprintf("Failed to find a %v rule for service %v with no endpoints", iptablestest.Reject, svcPortName), kubeSvcRules, t)
}
}
func TestOnlyLocalLoadBalancing(t *testing.T) {
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
svcIP := "10.20.30.41"
svcPort := 80
svcNodePort := 3001
svcLBIP := "1.2.3.4"
svcPortName := proxy.ServicePortName{
NamespacedName: makeNSN("ns1", "svc1"),
Port: "p80",
}
svcSessionAffinityTimeout := int32(10800)
makeServiceMap(fp,
makeTestService(svcPortName.Namespace, svcPortName.Name, func(svc *v1.Service) {
svc.Spec.Type = "LoadBalancer"
svc.Spec.ClusterIP = 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: svcLBIP,
}}
svc.Spec.ExternalTrafficPolicy = v1.ServiceExternalTrafficPolicyTypeLocal
svc.Spec.SessionAffinity = v1.ServiceAffinityClientIP
svc.Spec.SessionAffinityConfig = &v1.SessionAffinityConfig{
ClientIP: &v1.ClientIPConfig{TimeoutSeconds: &svcSessionAffinityTimeout},
}
}),
)
epIP1 := "10.180.0.1"
epIP2 := "10.180.2.1"
epStrLocal := fmt.Sprintf("%s:%d", epIP1, svcPort)
epStrNonLocal := fmt.Sprintf("%s:%d", epIP2, svcPort)
makeEndpointsMap(fp,
makeTestEndpoints(svcPortName.Namespace, svcPortName.Name, func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: epIP1,
NodeName: nil,
}, {
IP: epIP2,
NodeName: utilpointer.StringPtr(testHostname),
}},
Ports: []v1.EndpointPort{{
Name: svcPortName.Port,
Port: int32(svcPort),
}},
}}
}),
)
fp.syncProxyRules()
proto := strings.ToLower(string(v1.ProtocolTCP))
fwChain := string(serviceFirewallChainName(svcPortName.String(), proto))
lbChain := string(serviceLBChainName(svcPortName.String(), proto))
nonLocalEpChain := string(servicePortEndpointChainName(svcPortName.String(), strings.ToLower(string(v1.ProtocolTCP)), epStrLocal))
localEpChain := string(servicePortEndpointChainName(svcPortName.String(), strings.ToLower(string(v1.ProtocolTCP)), epStrNonLocal))
kubeSvcRules := ipt.GetRules(string(kubeServicesChain))
if !hasJump(kubeSvcRules, fwChain, svcLBIP, svcPort) {
errorf(fmt.Sprintf("Failed to find jump to firewall chain %v", fwChain), kubeSvcRules, t)
}
fwRules := ipt.GetRules(fwChain)
if !hasJump(fwRules, lbChain, "", 0) {
errorf(fmt.Sprintf("Failed to find jump from firewall chain %v to svc chain %v", fwChain, lbChain), fwRules, t)
}
if hasJump(fwRules, string(KubeMarkMasqChain), "", 0) {
errorf(fmt.Sprintf("Found jump from fw chain %v to MASQUERADE", fwChain), fwRules, t)
}
lbRules := ipt.GetRules(lbChain)
if hasJump(lbRules, nonLocalEpChain, "", 0) {
errorf(fmt.Sprintf("Found jump from lb chain %v to non-local ep %v", lbChain, epStrLocal), lbRules, t)
}
if !hasJump(lbRules, localEpChain, "", 0) {
errorf(fmt.Sprintf("Didn't find jump from lb chain %v to local ep %v", lbChain, epStrNonLocal), lbRules, t)
}
if !hasSessionAffinityRule(lbRules) {
errorf(fmt.Sprintf("Didn't find session affinity rule from lb chain %v", lbChain), lbRules, t)
}
}
func TestOnlyLocalNodePortsNoClusterCIDR(t *testing.T) {
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
// set cluster CIDR to empty before test
fp.clusterCIDR = ""
onlyLocalNodePorts(t, fp, ipt)
}
func TestOnlyLocalNodePorts(t *testing.T) {
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
onlyLocalNodePorts(t, fp, ipt)
}
func onlyLocalNodePorts(t *testing.T, fp *Proxier, ipt *iptablestest.FakeIPTables) {
svcIP := "10.20.30.41"
svcPort := 80
svcNodePort := 3001
svcPortName := proxy.ServicePortName{
NamespacedName: makeNSN("ns1", "svc1"),
Port: "p80",
}
makeServiceMap(fp,
makeTestService(svcPortName.Namespace, svcPortName.Name, func(svc *v1.Service) {
svc.Spec.Type = "NodePort"
svc.Spec.ClusterIP = svcIP
svc.Spec.Ports = []v1.ServicePort{{
Name: svcPortName.Port,
Port: int32(svcPort),
Protocol: v1.ProtocolTCP,
NodePort: int32(svcNodePort),
}}
svc.Spec.ExternalTrafficPolicy = v1.ServiceExternalTrafficPolicyTypeLocal
}),
)
epIP1 := "10.180.0.1"
epIP2 := "10.180.2.1"
epStrLocal := fmt.Sprintf("%s:%d", epIP1, svcPort)
epStrNonLocal := fmt.Sprintf("%s:%d", epIP2, svcPort)
makeEndpointsMap(fp,
makeTestEndpoints(svcPortName.Namespace, svcPortName.Name, func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: epIP1,
NodeName: nil,
}, {
IP: epIP2,
NodeName: utilpointer.StringPtr(testHostname),
}},
Ports: []v1.EndpointPort{{
Name: svcPortName.Port,
Port: int32(svcPort),
}},
}}
}),
)
itf := net.Interface{Index: 0, MTU: 0, Name: "eth0", HardwareAddr: nil, Flags: 0}
addrs := []net.Addr{utilproxytest.AddrStruct{Val: "10.20.30.51/24"}}
fp.networkInterfacer.(*utilproxytest.FakeNetwork).AddInterfaceAddr(&itf, addrs)
fp.nodePortAddresses = []string{"10.20.30.0/24"}
fp.syncProxyRules()
proto := strings.ToLower(string(v1.ProtocolTCP))
lbChain := string(serviceLBChainName(svcPortName.String(), proto))
nonLocalEpChain := string(servicePortEndpointChainName(svcPortName.String(), proto, epStrLocal))
localEpChain := string(servicePortEndpointChainName(svcPortName.String(), proto, epStrNonLocal))
kubeNodePortRules := ipt.GetRules(string(kubeNodePortsChain))
if !hasJump(kubeNodePortRules, lbChain, "", svcNodePort) {
errorf(fmt.Sprintf("Failed to find jump to lb chain %v", lbChain), kubeNodePortRules, t)
}
if !hasJump(kubeNodePortRules, string(KubeMarkMasqChain), "", svcNodePort) {
errorf(fmt.Sprintf("Failed to find jump to %s chain for destination IP %d", KubeMarkMasqChain, svcNodePort), kubeNodePortRules, t)
}
kubeServiceRules := ipt.GetRules(string(kubeServicesChain))
if !hasJump(kubeServiceRules, string(kubeNodePortsChain), "10.20.30.51", 0) {
errorf(fmt.Sprintf("Failed to find jump to KUBE-NODEPORTS chain %v", string(kubeNodePortsChain)), kubeServiceRules, t)
}
svcChain := string(servicePortChainName(svcPortName.String(), proto))
lbRules := ipt.GetRules(lbChain)
if hasJump(lbRules, nonLocalEpChain, "", 0) {
errorf(fmt.Sprintf("Found jump from lb chain %v to non-local ep %v", lbChain, epStrLocal), lbRules, t)
}
if !hasJump(lbRules, svcChain, "", 0) || !hasSrcType(lbRules, "LOCAL") {
errorf(fmt.Sprintf("Did not find jump from lb chain %v to svc %v with src-type LOCAL", lbChain, svcChain), lbRules, t)
}
if !hasJump(lbRules, localEpChain, "", 0) {
errorf(fmt.Sprintf("Didn't find jump from lb chain %v to local ep %v", lbChain, epStrLocal), lbRules, t)
}
}
func makeTestService(namespace, name string, svcFunc func(*v1.Service)) *v1.Service {
svc := &v1.Service{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: namespace,
Annotations: map[string]string{},
},
Spec: v1.ServiceSpec{},
Status: v1.ServiceStatus{},
}
svcFunc(svc)
return svc
}
func addTestPort(array []v1.ServicePort, name string, protocol v1.Protocol, port, nodeport int32, targetPort int) []v1.ServicePort {
svcPort := v1.ServicePort{
Name: name,
Protocol: protocol,
Port: port,
NodePort: nodeport,
TargetPort: intstr.FromInt(targetPort),
}
return append(array, svcPort)
}
func TestBuildServiceMapAddRemove(t *testing.T) {
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
services := []*v1.Service{
makeTestService("somewhere-else", "cluster-ip", func(svc *v1.Service) {
svc.Spec.Type = v1.ServiceTypeClusterIP
svc.Spec.ClusterIP = "172.16.55.4"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "something", "UDP", 1234, 4321, 0)
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "somethingelse", "UDP", 1235, 5321, 0)
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "sctpport", "SCTP", 1236, 6321, 0)
}),
makeTestService("somewhere-else", "node-port", func(svc *v1.Service) {
svc.Spec.Type = v1.ServiceTypeNodePort
svc.Spec.ClusterIP = "172.16.55.10"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "blahblah", "UDP", 345, 678, 0)
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "moreblahblah", "TCP", 344, 677, 0)
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "muchmoreblah", "SCTP", 343, 676, 0)
}),
makeTestService("somewhere", "load-balancer", func(svc *v1.Service) {
svc.Spec.Type = v1.ServiceTypeLoadBalancer
svc.Spec.ClusterIP = "172.16.55.11"
svc.Spec.LoadBalancerIP = "5.6.7.8"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "foobar", "UDP", 8675, 30061, 7000)
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "baz", "UDP", 8676, 30062, 7001)
svc.Status.LoadBalancer = v1.LoadBalancerStatus{
Ingress: []v1.LoadBalancerIngress{
{IP: "10.1.2.4"},
},
}
}),
makeTestService("somewhere", "only-local-load-balancer", func(svc *v1.Service) {
svc.Spec.Type = v1.ServiceTypeLoadBalancer
svc.Spec.ClusterIP = "172.16.55.12"
svc.Spec.LoadBalancerIP = "5.6.7.8"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "foobar2", "UDP", 8677, 30063, 7002)
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "baz", "UDP", 8678, 30064, 7003)
svc.Status.LoadBalancer = v1.LoadBalancerStatus{
Ingress: []v1.LoadBalancerIngress{
{IP: "10.1.2.3"},
},
}
svc.Spec.ExternalTrafficPolicy = v1.ServiceExternalTrafficPolicyTypeLocal
svc.Spec.HealthCheckNodePort = 345
}),
}
for i := range services {
fp.OnServiceAdd(services[i])
}
result := proxy.UpdateServiceMap(fp.serviceMap, fp.serviceChanges)
if len(fp.serviceMap) != 10 {
t.Errorf("expected service map length 10, got %v", fp.serviceMap)
}
// The only-local-loadbalancer ones get added
if len(result.HCServiceNodePorts) != 1 {
t.Errorf("expected 1 healthcheck port, got %v", result.HCServiceNodePorts)
} else {
nsn := makeNSN("somewhere", "only-local-load-balancer")
if port, found := result.HCServiceNodePorts[nsn]; !found || port != 345 {
t.Errorf("expected healthcheck port [%q]=345: got %v", nsn, result.HCServiceNodePorts)
}
}
if len(result.UDPStaleClusterIP) != 0 {
// Services only added, so nothing stale yet
t.Errorf("expected stale UDP services length 0, got %d", len(result.UDPStaleClusterIP))
}
// Remove some stuff
// oneService is a modification of services[0] with removed first port.
oneService := makeTestService("somewhere-else", "cluster-ip", func(svc *v1.Service) {
svc.Spec.Type = v1.ServiceTypeClusterIP
svc.Spec.ClusterIP = "172.16.55.4"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "somethingelse", "UDP", 1235, 5321, 0)
})
fp.OnServiceUpdate(services[0], oneService)
fp.OnServiceDelete(services[1])
fp.OnServiceDelete(services[2])
fp.OnServiceDelete(services[3])
result = proxy.UpdateServiceMap(fp.serviceMap, fp.serviceChanges)
if len(fp.serviceMap) != 1 {
t.Errorf("expected service map length 1, got %v", fp.serviceMap)
}
if len(result.HCServiceNodePorts) != 0 {
t.Errorf("expected 0 healthcheck ports, got %v", result.HCServiceNodePorts)
}
// All services but one were deleted. While you'd expect only the ClusterIPs
// from the three deleted services here, we still have the ClusterIP for
// the not-deleted service, because one of it's ServicePorts was deleted.
expectedStaleUDPServices := []string{"172.16.55.10", "172.16.55.4", "172.16.55.11", "172.16.55.12"}
if len(result.UDPStaleClusterIP) != len(expectedStaleUDPServices) {
t.Errorf("expected stale UDP services length %d, got %v", len(expectedStaleUDPServices), result.UDPStaleClusterIP.UnsortedList())
}
for _, ip := range expectedStaleUDPServices {
if !result.UDPStaleClusterIP.Has(ip) {
t.Errorf("expected stale UDP service service %s", ip)
}
}
}
func TestBuildServiceMapServiceHeadless(t *testing.T) {
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
makeServiceMap(fp,
makeTestService("somewhere-else", "headless", func(svc *v1.Service) {
svc.Spec.Type = v1.ServiceTypeClusterIP
svc.Spec.ClusterIP = v1.ClusterIPNone
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "rpc", "UDP", 1234, 0, 0)
}),
makeTestService("somewhere-else", "headless-without-port", func(svc *v1.Service) {
svc.Spec.Type = v1.ServiceTypeClusterIP
svc.Spec.ClusterIP = v1.ClusterIPNone
}),
)
// Headless service should be ignored
result := proxy.UpdateServiceMap(fp.serviceMap, fp.serviceChanges)
if len(fp.serviceMap) != 0 {
t.Errorf("expected service map length 0, got %d", len(fp.serviceMap))
}
// No proxied services, so no healthchecks
if len(result.HCServiceNodePorts) != 0 {
t.Errorf("expected healthcheck ports length 0, got %d", len(result.HCServiceNodePorts))
}
if len(result.UDPStaleClusterIP) != 0 {
t.Errorf("expected stale UDP services length 0, got %d", len(result.UDPStaleClusterIP))
}
}
func TestBuildServiceMapServiceTypeExternalName(t *testing.T) {
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
makeServiceMap(fp,
makeTestService("somewhere-else", "external-name", func(svc *v1.Service) {
svc.Spec.Type = v1.ServiceTypeExternalName
svc.Spec.ClusterIP = "172.16.55.4" // Should be ignored
svc.Spec.ExternalName = "foo2.bar.com"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "blah", "UDP", 1235, 5321, 0)
}),
)
result := proxy.UpdateServiceMap(fp.serviceMap, fp.serviceChanges)
if len(fp.serviceMap) != 0 {
t.Errorf("expected service map length 0, got %v", fp.serviceMap)
}
// No proxied services, so no healthchecks
if len(result.HCServiceNodePorts) != 0 {
t.Errorf("expected healthcheck ports length 0, got %v", result.HCServiceNodePorts)
}
if len(result.UDPStaleClusterIP) != 0 {
t.Errorf("expected stale UDP services length 0, got %v", result.UDPStaleClusterIP)
}
}
func TestBuildServiceMapServiceUpdate(t *testing.T) {
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
servicev1 := makeTestService("somewhere", "some-service", func(svc *v1.Service) {
svc.Spec.Type = v1.ServiceTypeClusterIP
svc.Spec.ClusterIP = "172.16.55.4"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "something", "UDP", 1234, 4321, 0)
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "somethingelse", "TCP", 1235, 5321, 0)
})
servicev2 := makeTestService("somewhere", "some-service", func(svc *v1.Service) {
svc.Spec.Type = v1.ServiceTypeLoadBalancer
svc.Spec.ClusterIP = "172.16.55.4"
svc.Spec.LoadBalancerIP = "5.6.7.8"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "something", "UDP", 1234, 4321, 7002)
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "somethingelse", "TCP", 1235, 5321, 7003)
svc.Status.LoadBalancer = v1.LoadBalancerStatus{
Ingress: []v1.LoadBalancerIngress{
{IP: "10.1.2.3"},
},
}
svc.Spec.ExternalTrafficPolicy = v1.ServiceExternalTrafficPolicyTypeLocal
svc.Spec.HealthCheckNodePort = 345
})
fp.OnServiceAdd(servicev1)
result := proxy.UpdateServiceMap(fp.serviceMap, fp.serviceChanges)
if len(fp.serviceMap) != 2 {
t.Errorf("expected service map length 2, got %v", fp.serviceMap)
}
if len(result.HCServiceNodePorts) != 0 {
t.Errorf("expected healthcheck ports length 0, got %v", result.HCServiceNodePorts)
}
if len(result.UDPStaleClusterIP) != 0 {
// Services only added, so nothing stale yet
t.Errorf("expected stale UDP services length 0, got %d", len(result.UDPStaleClusterIP))
}
// Change service to load-balancer
fp.OnServiceUpdate(servicev1, servicev2)
result = proxy.UpdateServiceMap(fp.serviceMap, fp.serviceChanges)
if len(fp.serviceMap) != 2 {
t.Errorf("expected service map length 2, got %v", fp.serviceMap)
}
if len(result.HCServiceNodePorts) != 1 {
t.Errorf("expected healthcheck ports length 1, got %v", result.HCServiceNodePorts)
}
if len(result.UDPStaleClusterIP) != 0 {
t.Errorf("expected stale UDP services length 0, got %v", result.UDPStaleClusterIP.UnsortedList())
}
// No change; make sure the service map stays the same and there are
// no health-check changes
fp.OnServiceUpdate(servicev2, servicev2)
result = proxy.UpdateServiceMap(fp.serviceMap, fp.serviceChanges)
if len(fp.serviceMap) != 2 {
t.Errorf("expected service map length 2, got %v", fp.serviceMap)
}
if len(result.HCServiceNodePorts) != 1 {
t.Errorf("expected healthcheck ports length 1, got %v", result.HCServiceNodePorts)
}
if len(result.UDPStaleClusterIP) != 0 {
t.Errorf("expected stale UDP services length 0, got %v", result.UDPStaleClusterIP.UnsortedList())
}
// And back to ClusterIP
fp.OnServiceUpdate(servicev2, servicev1)
result = proxy.UpdateServiceMap(fp.serviceMap, fp.serviceChanges)
if len(fp.serviceMap) != 2 {
t.Errorf("expected service map length 2, got %v", fp.serviceMap)
}
if len(result.HCServiceNodePorts) != 0 {
t.Errorf("expected healthcheck ports length 0, got %v", result.HCServiceNodePorts)
}
if len(result.UDPStaleClusterIP) != 0 {
// Services only added, so nothing stale yet
t.Errorf("expected stale UDP services length 0, got %d", len(result.UDPStaleClusterIP))
}
}
func makeTestEndpoints(namespace, name string, eptFunc func(*v1.Endpoints)) *v1.Endpoints {
ept := &v1.Endpoints{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: namespace,
},
}
eptFunc(ept)
return ept
}
func makeEndpointsMap(proxier *Proxier, allEndpoints ...*v1.Endpoints) {
for i := range allEndpoints {
proxier.OnEndpointsAdd(allEndpoints[i])
}
proxier.mu.Lock()
defer proxier.mu.Unlock()
proxier.endpointsSynced = true
}
func makeNSN(namespace, name string) types.NamespacedName {
return types.NamespacedName{Namespace: namespace, Name: name}
}
func makeServicePortName(ns, name, port string) proxy.ServicePortName {
return proxy.ServicePortName{
NamespacedName: makeNSN(ns, name),
Port: port,
}
}
func makeServiceMap(proxier *Proxier, allServices ...*v1.Service) {
for i := range allServices {
proxier.OnServiceAdd(allServices[i])
}
proxier.mu.Lock()
defer proxier.mu.Unlock()
proxier.servicesSynced = true
}
func compareEndpointsMaps(t *testing.T, tci int, newMap proxy.EndpointsMap, expected map[proxy.ServicePortName][]*endpointsInfo) {
if len(newMap) != len(expected) {
t.Errorf("[%d] expected %d results, got %d: %v", tci, len(expected), len(newMap), newMap)
}
for x := range expected {
if len(newMap[x]) != len(expected[x]) {
t.Errorf("[%d] expected %d endpoints for %v, got %d", tci, len(expected[x]), x, len(newMap[x]))
} else {
for i := range expected[x] {
newEp, ok := newMap[x][i].(*endpointsInfo)
if !ok {
t.Errorf("Failed to cast endpointsInfo")
continue
}
if newEp.Endpoint != expected[x][i].Endpoint ||
newEp.IsLocal != expected[x][i].IsLocal ||
newEp.protocol != expected[x][i].protocol ||
newEp.chainName != expected[x][i].chainName {
t.Errorf("[%d] expected new[%v][%d] to be %v, got %v", tci, x, i, expected[x][i], newEp)
}
}
}
}
}
func Test_updateEndpointsMap(t *testing.T) {
var nodeName = testHostname
emptyEndpoint := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{}
}
unnamedPort := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.1",
}},
Ports: []v1.EndpointPort{{
Port: 11,
}},
}}
}
unnamedPortLocal := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.1",
NodeName: &nodeName,
}},
Ports: []v1.EndpointPort{{
Port: 11,
}},
}}
}
namedPortLocal := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.1",
NodeName: &nodeName,
}},
Ports: []v1.EndpointPort{{
Name: "p11",
Port: 11,
}},
}}
}
namedPort := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.1",
}},
Ports: []v1.EndpointPort{{
Name: "p11",
Port: 11,
}},
}}
}
namedPortRenamed := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.1",
}},
Ports: []v1.EndpointPort{{
Name: "p11-2",
Port: 11,
}},
}}
}
namedPortRenumbered := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.1",
}},
Ports: []v1.EndpointPort{{
Name: "p11",
Port: 22,
}},
}}
}
namedPortsLocalNoLocal := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.1",
}, {
IP: "1.1.1.2",
NodeName: &nodeName,
}},
Ports: []v1.EndpointPort{{
Name: "p11",
Port: 11,
}, {
Name: "p12",
Port: 12,
}},
}}
}
multipleSubsets := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.1",
}},
Ports: []v1.EndpointPort{{
Name: "p11",
Port: 11,
}},
}, {
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.2",
}},
Ports: []v1.EndpointPort{{
Name: "p12",
Port: 12,
}},
}}
}
multipleSubsetsWithLocal := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.1",
}},
Ports: []v1.EndpointPort{{
Name: "p11",
Port: 11,
}},
}, {
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.2",
NodeName: &nodeName,
}},
Ports: []v1.EndpointPort{{
Name: "p12",
Port: 12,
}},
}}
}
multipleSubsetsMultiplePortsLocal := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.1",
NodeName: &nodeName,
}},
Ports: []v1.EndpointPort{{
Name: "p11",
Port: 11,
}, {
Name: "p12",
Port: 12,
}},
}, {
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.3",
}},
Ports: []v1.EndpointPort{{
Name: "p13",
Port: 13,
}},
}}
}
multipleSubsetsIPsPorts1 := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.1",
}, {
IP: "1.1.1.2",
NodeName: &nodeName,
}},
Ports: []v1.EndpointPort{{
Name: "p11",
Port: 11,
}, {
Name: "p12",
Port: 12,
}},
}, {
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.3",
}, {
IP: "1.1.1.4",
NodeName: &nodeName,
}},
Ports: []v1.EndpointPort{{
Name: "p13",
Port: 13,
}, {
Name: "p14",
Port: 14,
}},
}}
}
multipleSubsetsIPsPorts2 := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "2.2.2.1",
}, {
IP: "2.2.2.2",
NodeName: &nodeName,
}},
Ports: []v1.EndpointPort{{
Name: "p21",
Port: 21,
}, {
Name: "p22",
Port: 22,
}},
}}
}
complexBefore1 := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.1",
}},
Ports: []v1.EndpointPort{{
Name: "p11",
Port: 11,
}},
}}
}
complexBefore2 := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "2.2.2.2",
NodeName: &nodeName,
}, {
IP: "2.2.2.22",
NodeName: &nodeName,
}},
Ports: []v1.EndpointPort{{
Name: "p22",
Port: 22,
}},
}, {
Addresses: []v1.EndpointAddress{{
IP: "2.2.2.3",
NodeName: &nodeName,
}},
Ports: []v1.EndpointPort{{
Name: "p23",
Port: 23,
}},
}}
}
complexBefore4 := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "4.4.4.4",
NodeName: &nodeName,
}, {
IP: "4.4.4.5",
NodeName: &nodeName,
}},
Ports: []v1.EndpointPort{{
Name: "p44",
Port: 44,
}},
}, {
Addresses: []v1.EndpointAddress{{
IP: "4.4.4.6",
NodeName: &nodeName,
}},
Ports: []v1.EndpointPort{{
Name: "p45",
Port: 45,
}},
}}
}
complexAfter1 := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.1",
}, {
IP: "1.1.1.11",
}},
Ports: []v1.EndpointPort{{
Name: "p11",
Port: 11,
}},
}, {
Addresses: []v1.EndpointAddress{{
IP: "1.1.1.2",
}},
Ports: []v1.EndpointPort{{
Name: "p12",
Port: 12,
}, {
Name: "p122",
Port: 122,
}},
}}
}
complexAfter3 := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "3.3.3.3",
}},
Ports: []v1.EndpointPort{{
Name: "p33",
Port: 33,
}},
}}
}
complexAfter4 := func(ept *v1.Endpoints) {
ept.Subsets = []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{{
IP: "4.4.4.4",
NodeName: &nodeName,
}},
Ports: []v1.EndpointPort{{
Name: "p44",
Port: 44,
}},
}}
}
testCases := []struct {
// previousEndpoints and currentEndpoints are used to call appropriate
// handlers OnEndpoints* (based on whether corresponding values are nil
// or non-nil) and must be of equal length.
previousEndpoints []*v1.Endpoints
currentEndpoints []*v1.Endpoints
oldEndpoints map[proxy.ServicePortName][]*endpointsInfo
expectedResult map[proxy.ServicePortName][]*endpointsInfo
expectedStaleEndpoints []proxy.ServiceEndpoint
expectedStaleServiceNames map[proxy.ServicePortName]bool
expectedHealthchecks map[types.NamespacedName]int
}{{
// Case[0]: nothing
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{},
expectedStaleEndpoints: []proxy.ServiceEndpoint{},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{},
expectedHealthchecks: map[types.NamespacedName]int{},
}, {
// Case[1]: no change, unnamed port
previousEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", unnamedPort),
},
currentEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", unnamedPort),
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", ""): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", ""): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
},
expectedStaleEndpoints: []proxy.ServiceEndpoint{},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{},
expectedHealthchecks: map[types.NamespacedName]int{},
}, {
// Case[2]: no change, named port, local
previousEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", namedPortLocal),
},
currentEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", namedPortLocal),
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: true}},
},
},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: true}},
},
},
expectedStaleEndpoints: []proxy.ServiceEndpoint{},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{},
expectedHealthchecks: map[types.NamespacedName]int{
makeNSN("ns1", "ep1"): 1,
},
}, {
// Case[3]: no change, multiple subsets
previousEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", multipleSubsets),
},
currentEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", multipleSubsets),
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
makeServicePortName("ns1", "ep1", "p12"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.2:12", IsLocal: false}},
},
},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
makeServicePortName("ns1", "ep1", "p12"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.2:12", IsLocal: false}},
},
},
expectedStaleEndpoints: []proxy.ServiceEndpoint{},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{},
expectedHealthchecks: map[types.NamespacedName]int{},
}, {
// Case[4]: no change, multiple subsets, multiple ports, local
previousEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", multipleSubsetsMultiplePortsLocal),
},
currentEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", multipleSubsetsMultiplePortsLocal),
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: true}},
},
makeServicePortName("ns1", "ep1", "p12"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:12", IsLocal: true}},
},
makeServicePortName("ns1", "ep1", "p13"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.3:13", IsLocal: false}},
},
},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: true}},
},
makeServicePortName("ns1", "ep1", "p12"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:12", IsLocal: true}},
},
makeServicePortName("ns1", "ep1", "p13"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.3:13", IsLocal: false}},
},
},
expectedStaleEndpoints: []proxy.ServiceEndpoint{},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{},
expectedHealthchecks: map[types.NamespacedName]int{
makeNSN("ns1", "ep1"): 1,
},
}, {
// Case[5]: no change, multiple endpoints, subsets, IPs, and ports
previousEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", multipleSubsetsIPsPorts1),
makeTestEndpoints("ns2", "ep2", multipleSubsetsIPsPorts2),
},
currentEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", multipleSubsetsIPsPorts1),
makeTestEndpoints("ns2", "ep2", multipleSubsetsIPsPorts2),
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.2:11", IsLocal: true}},
},
makeServicePortName("ns1", "ep1", "p12"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:12", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.2:12", IsLocal: true}},
},
makeServicePortName("ns1", "ep1", "p13"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.3:13", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.4:13", IsLocal: true}},
},
makeServicePortName("ns1", "ep1", "p14"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.3:14", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.4:14", IsLocal: true}},
},
makeServicePortName("ns2", "ep2", "p21"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "2.2.2.1:21", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "2.2.2.2:21", IsLocal: true}},
},
makeServicePortName("ns2", "ep2", "p22"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "2.2.2.1:22", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "2.2.2.2:22", IsLocal: true}},
},
},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.2:11", IsLocal: true}},
},
makeServicePortName("ns1", "ep1", "p12"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:12", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.2:12", IsLocal: true}},
},
makeServicePortName("ns1", "ep1", "p13"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.3:13", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.4:13", IsLocal: true}},
},
makeServicePortName("ns1", "ep1", "p14"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.3:14", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.4:14", IsLocal: true}},
},
makeServicePortName("ns2", "ep2", "p21"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "2.2.2.1:21", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "2.2.2.2:21", IsLocal: true}},
},
makeServicePortName("ns2", "ep2", "p22"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "2.2.2.1:22", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "2.2.2.2:22", IsLocal: true}},
},
},
expectedStaleEndpoints: []proxy.ServiceEndpoint{},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{},
expectedHealthchecks: map[types.NamespacedName]int{
makeNSN("ns1", "ep1"): 2,
makeNSN("ns2", "ep2"): 1,
},
}, {
// Case[6]: add an Endpoints
previousEndpoints: []*v1.Endpoints{
nil,
},
currentEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", unnamedPortLocal),
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", ""): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: true}},
},
},
expectedStaleEndpoints: []proxy.ServiceEndpoint{},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{
makeServicePortName("ns1", "ep1", ""): true,
},
expectedHealthchecks: map[types.NamespacedName]int{
makeNSN("ns1", "ep1"): 1,
},
}, {
// Case[7]: remove an Endpoints
previousEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", unnamedPortLocal),
},
currentEndpoints: []*v1.Endpoints{
nil,
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", ""): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: true}},
},
},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{},
expectedStaleEndpoints: []proxy.ServiceEndpoint{{
Endpoint: "1.1.1.1:11",
ServicePortName: makeServicePortName("ns1", "ep1", ""),
}},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{},
expectedHealthchecks: map[types.NamespacedName]int{},
}, {
// Case[8]: add an IP and port
previousEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", namedPort),
},
currentEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", namedPortsLocalNoLocal),
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.2:11", IsLocal: true}},
},
makeServicePortName("ns1", "ep1", "p12"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:12", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.2:12", IsLocal: true}},
},
},
expectedStaleEndpoints: []proxy.ServiceEndpoint{},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{
makeServicePortName("ns1", "ep1", "p12"): true,
},
expectedHealthchecks: map[types.NamespacedName]int{
makeNSN("ns1", "ep1"): 1,
},
}, {
// Case[9]: remove an IP and port
previousEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", namedPortsLocalNoLocal),
},
currentEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", namedPort),
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.2:11", IsLocal: true}},
},
makeServicePortName("ns1", "ep1", "p12"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:12", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.2:12", IsLocal: true}},
},
},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
},
expectedStaleEndpoints: []proxy.ServiceEndpoint{{
Endpoint: "1.1.1.2:11",
ServicePortName: makeServicePortName("ns1", "ep1", "p11"),
}, {
Endpoint: "1.1.1.1:12",
ServicePortName: makeServicePortName("ns1", "ep1", "p12"),
}, {
Endpoint: "1.1.1.2:12",
ServicePortName: makeServicePortName("ns1", "ep1", "p12"),
}},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{},
expectedHealthchecks: map[types.NamespacedName]int{},
}, {
// Case[10]: add a subset
previousEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", namedPort),
},
currentEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", multipleSubsetsWithLocal),
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
makeServicePortName("ns1", "ep1", "p12"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.2:12", IsLocal: true}},
},
},
expectedStaleEndpoints: []proxy.ServiceEndpoint{},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{
makeServicePortName("ns1", "ep1", "p12"): true,
},
expectedHealthchecks: map[types.NamespacedName]int{
makeNSN("ns1", "ep1"): 1,
},
}, {
// Case[11]: remove a subset
previousEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", multipleSubsets),
},
currentEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", namedPort),
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
makeServicePortName("ns1", "ep1", "p12"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.2:12", IsLocal: false}},
},
},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
},
expectedStaleEndpoints: []proxy.ServiceEndpoint{{
Endpoint: "1.1.1.2:12",
ServicePortName: makeServicePortName("ns1", "ep1", "p12"),
}},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{},
expectedHealthchecks: map[types.NamespacedName]int{},
}, {
// Case[12]: rename a port
previousEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", namedPort),
},
currentEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", namedPortRenamed),
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11-2"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
},
expectedStaleEndpoints: []proxy.ServiceEndpoint{{
Endpoint: "1.1.1.1:11",
ServicePortName: makeServicePortName("ns1", "ep1", "p11"),
}},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{
makeServicePortName("ns1", "ep1", "p11-2"): true,
},
expectedHealthchecks: map[types.NamespacedName]int{},
}, {
// Case[13]: renumber a port
previousEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", namedPort),
},
currentEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", namedPortRenumbered),
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:22", IsLocal: false}},
},
},
expectedStaleEndpoints: []proxy.ServiceEndpoint{{
Endpoint: "1.1.1.1:11",
ServicePortName: makeServicePortName("ns1", "ep1", "p11"),
}},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{},
expectedHealthchecks: map[types.NamespacedName]int{},
}, {
// Case[14]: complex add and remove
previousEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", complexBefore1),
makeTestEndpoints("ns2", "ep2", complexBefore2),
nil,
makeTestEndpoints("ns4", "ep4", complexBefore4),
},
currentEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", complexAfter1),
nil,
makeTestEndpoints("ns3", "ep3", complexAfter3),
makeTestEndpoints("ns4", "ep4", complexAfter4),
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
makeServicePortName("ns2", "ep2", "p22"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "2.2.2.2:22", IsLocal: true}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "2.2.2.22:22", IsLocal: true}},
},
makeServicePortName("ns2", "ep2", "p23"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "2.2.2.3:23", IsLocal: true}},
},
makeServicePortName("ns4", "ep4", "p44"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "4.4.4.4:44", IsLocal: true}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "4.4.4.5:44", IsLocal: true}},
},
makeServicePortName("ns4", "ep4", "p45"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "4.4.4.6:45", IsLocal: true}},
},
},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", "p11"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.11:11", IsLocal: false}},
},
makeServicePortName("ns1", "ep1", "p12"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.2:12", IsLocal: false}},
},
makeServicePortName("ns1", "ep1", "p122"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.2:122", IsLocal: false}},
},
makeServicePortName("ns3", "ep3", "p33"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "3.3.3.3:33", IsLocal: false}},
},
makeServicePortName("ns4", "ep4", "p44"): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "4.4.4.4:44", IsLocal: true}},
},
},
expectedStaleEndpoints: []proxy.ServiceEndpoint{{
Endpoint: "2.2.2.2:22",
ServicePortName: makeServicePortName("ns2", "ep2", "p22"),
}, {
Endpoint: "2.2.2.22:22",
ServicePortName: makeServicePortName("ns2", "ep2", "p22"),
}, {
Endpoint: "2.2.2.3:23",
ServicePortName: makeServicePortName("ns2", "ep2", "p23"),
}, {
Endpoint: "4.4.4.5:44",
ServicePortName: makeServicePortName("ns4", "ep4", "p44"),
}, {
Endpoint: "4.4.4.6:45",
ServicePortName: makeServicePortName("ns4", "ep4", "p45"),
}},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{
makeServicePortName("ns1", "ep1", "p12"): true,
makeServicePortName("ns1", "ep1", "p122"): true,
makeServicePortName("ns3", "ep3", "p33"): true,
},
expectedHealthchecks: map[types.NamespacedName]int{
makeNSN("ns4", "ep4"): 1,
},
}, {
// Case[15]: change from 0 endpoint address to 1 unnamed port
previousEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", emptyEndpoint),
},
currentEndpoints: []*v1.Endpoints{
makeTestEndpoints("ns1", "ep1", unnamedPort),
},
oldEndpoints: map[proxy.ServicePortName][]*endpointsInfo{},
expectedResult: map[proxy.ServicePortName][]*endpointsInfo{
makeServicePortName("ns1", "ep1", ""): {
{BaseEndpointInfo: &proxy.BaseEndpointInfo{Endpoint: "1.1.1.1:11", IsLocal: false}},
},
},
expectedStaleEndpoints: []proxy.ServiceEndpoint{},
expectedStaleServiceNames: map[proxy.ServicePortName]bool{
makeServicePortName("ns1", "ep1", ""): true,
},
expectedHealthchecks: map[types.NamespacedName]int{},
},
}
for tci, tc := range testCases {
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, false)
fp.hostname = nodeName
// First check that after adding all previous versions of endpoints,
// the fp.oldEndpoints is as we expect.
for i := range tc.previousEndpoints {
if tc.previousEndpoints[i] != nil {
fp.OnEndpointsAdd(tc.previousEndpoints[i])
}
}
fp.endpointsMap.Update(fp.endpointsChanges)
compareEndpointsMaps(t, tci, fp.endpointsMap, tc.oldEndpoints)
// Now let's call appropriate handlers to get to state we want to be.
if len(tc.previousEndpoints) != len(tc.currentEndpoints) {
t.Fatalf("[%d] different lengths of previous and current endpoints", tci)
continue
}
for i := range tc.previousEndpoints {
prev, curr := tc.previousEndpoints[i], tc.currentEndpoints[i]
switch {
case prev == nil:
fp.OnEndpointsAdd(curr)
case curr == nil:
fp.OnEndpointsDelete(prev)
default:
fp.OnEndpointsUpdate(prev, curr)
}
}
result := fp.endpointsMap.Update(fp.endpointsChanges)
newMap := fp.endpointsMap
compareEndpointsMaps(t, tci, newMap, tc.expectedResult)
if len(result.StaleEndpoints) != len(tc.expectedStaleEndpoints) {
t.Errorf("[%d] expected %d staleEndpoints, got %d: %v", tci, len(tc.expectedStaleEndpoints), len(result.StaleEndpoints), result.StaleEndpoints)
}
for _, x := range tc.expectedStaleEndpoints {
found := false
for _, stale := range result.StaleEndpoints {
if stale == x {
found = true
break
}
}
if !found {
t.Errorf("[%d] expected staleEndpoints[%v], but didn't find it: %v", tci, x, result.StaleEndpoints)
}
}
if len(result.StaleServiceNames) != len(tc.expectedStaleServiceNames) {
t.Errorf("[%d] expected %d staleServiceNames, got %d: %v", tci, len(tc.expectedStaleServiceNames), len(result.StaleServiceNames), result.StaleServiceNames)
}
for svcName := range tc.expectedStaleServiceNames {
found := false
for _, stale := range result.StaleServiceNames {
if stale == svcName {
found = true
}
}
if !found {
t.Errorf("[%d] expected staleServiceNames[%v], but didn't find it: %v", tci, svcName, result.StaleServiceNames)
}
}
if !reflect.DeepEqual(result.HCEndpointsLocalIPSize, tc.expectedHealthchecks) {
t.Errorf("[%d] expected healthchecks %v, got %v", tci, tc.expectedHealthchecks, result.HCEndpointsLocalIPSize)
}
}
}
// The majority of EndpointSlice specific tests are not iptables specific and focus on
// the shared EndpointChangeTracker and EndpointSliceCache. This test ensures that the
// iptables proxier supports translating EndpointSlices to iptables output.
func TestEndpointSliceE2E(t *testing.T) {
expectedIPTablesWithoutSlice := `*filter
:KUBE-SERVICES - [0:0]
:KUBE-EXTERNAL-SERVICES - [0:0]
:KUBE-FORWARD - [0:0]
-A KUBE-SERVICES -m comment --comment "ns1/svc1: has no endpoints" -m -p -d 172.20.1.1/32 --dport 0 -j REJECT
-A KUBE-FORWARD -m conntrack --ctstate INVALID -j DROP
-A KUBE-FORWARD -m comment --comment "kubernetes forwarding rules" -m mark --mark -j ACCEPT
-A KUBE-FORWARD -s 10.0.0.0/24 -m comment --comment "kubernetes forwarding conntrack pod source rule" -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A KUBE-FORWARD -m comment --comment "kubernetes forwarding conntrack pod destination rule" -d 10.0.0.0/24 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
COMMIT
*nat
:KUBE-SERVICES - [0:0]
:KUBE-NODEPORTS - [0:0]
:KUBE-POSTROUTING - [0:0]
:KUBE-MARK-MASQ - [0:0]
:KUBE-SVC-3WUAALNGPYZZAWAD - [0:0]
-A KUBE-POSTROUTING -m comment --comment "kubernetes service traffic requiring SNAT" -m mark --mark -j MASQUERADE
-A KUBE-MARK-MASQ -j MARK --set-xmark
-X KUBE-SVC-3WUAALNGPYZZAWAD
-A KUBE-SERVICES -m comment --comment "kubernetes service nodeports; NOTE: this must be the last rule in this chain" -m addrtype --dst-type LOCAL -j KUBE-NODEPORTS
COMMIT
`
expectedIPTablesWithSlice := `*filter
:KUBE-SERVICES - [0:0]
:KUBE-EXTERNAL-SERVICES - [0:0]
:KUBE-FORWARD - [0:0]
-A KUBE-FORWARD -m conntrack --ctstate INVALID -j DROP
-A KUBE-FORWARD -m comment --comment "kubernetes forwarding rules" -m mark --mark -j ACCEPT
-A KUBE-FORWARD -s 10.0.0.0/24 -m comment --comment "kubernetes forwarding conntrack pod source rule" -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A KUBE-FORWARD -m comment --comment "kubernetes forwarding conntrack pod destination rule" -d 10.0.0.0/24 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
COMMIT
*nat
:KUBE-SERVICES - [0:0]
:KUBE-NODEPORTS - [0:0]
:KUBE-POSTROUTING - [0:0]
:KUBE-MARK-MASQ - [0:0]
:KUBE-SVC-3WUAALNGPYZZAWAD - [0:0]
: - [0:0]
: - [0:0]
: - [0:0]
-A KUBE-POSTROUTING -m comment --comment "kubernetes service traffic requiring SNAT" -m mark --mark -j MASQUERADE
-A KUBE-MARK-MASQ -j MARK --set-xmark
-A KUBE-SERVICES -m comment --comment "ns1/svc1: cluster IP" -m -p -d 172.20.1.1/32 --dport 0 ! -s 10.0.0.0/24 -j KUBE-MARK-MASQ
-A KUBE-SERVICES -m comment --comment "ns1/svc1: cluster IP" -m -p -d 172.20.1.1/32 --dport 0 -j KUBE-SVC-3WUAALNGPYZZAWAD
-A KUBE-SVC-3WUAALNGPYZZAWAD -m statistic --mode random --probability 0.33333 -j
-A -s 10.0.1.1/32 -j KUBE-MARK-MASQ
-A -m -p -j DNAT --to-destination 10.0.1.1:80
-A KUBE-SVC-3WUAALNGPYZZAWAD -m statistic --mode random --probability 0.50000 -j
-A -s 10.0.1.2/32 -j KUBE-MARK-MASQ
-A -m -p -j DNAT --to-destination 10.0.1.2:80
-A KUBE-SVC-3WUAALNGPYZZAWAD -j
-A -s 10.0.1.3/32 -j KUBE-MARK-MASQ
-A -m -p -j DNAT --to-destination 10.0.1.3:80
-A KUBE-SERVICES -m comment --comment "kubernetes service nodeports; NOTE: this must be the last rule in this chain" -m addrtype --dst-type LOCAL -j KUBE-NODEPORTS
COMMIT
`
ipt := iptablestest.NewFake()
fp := NewFakeProxier(ipt, true)
fp.OnServiceSynced()
fp.OnEndpointsSynced()
fp.OnEndpointSlicesSynced()
serviceName := "svc1"
namespaceName := "ns1"
fp.OnServiceAdd(&v1.Service{
ObjectMeta: metav1.ObjectMeta{Name: serviceName, Namespace: namespaceName},
Spec: v1.ServiceSpec{
ClusterIP: "172.20.1.1",
Selector: map[string]string{"foo": "bar"},
Ports: []v1.ServicePort{{Name: "", TargetPort: intstr.FromInt(80)}},
},
})
ipAddressType := discovery.AddressTypeIP
endpointSlice := &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Name: fmt.Sprintf("%s-1", serviceName),
Namespace: namespaceName,
Labels: map[string]string{discovery.LabelServiceName: serviceName},
},
Ports: []discovery.EndpointPort{{
Name: utilpointer.StringPtr(""),
Port: utilpointer.Int32Ptr(80),
}},
AddressType: &ipAddressType,
Endpoints: []discovery.Endpoint{{
Addresses: []string{"10.0.1.1"},
Conditions: discovery.EndpointConditions{Ready: utilpointer.BoolPtr(true)},
Topology: map[string]string{"kubernetes.io/hostname": testHostname},
}, {
Addresses: []string{"10.0.1.2"},
Conditions: discovery.EndpointConditions{Ready: utilpointer.BoolPtr(true)},
Topology: map[string]string{"kubernetes.io/hostname": "node2"},
}, {
Addresses: []string{"10.0.1.3"},
Conditions: discovery.EndpointConditions{Ready: utilpointer.BoolPtr(true)},
Topology: map[string]string{"kubernetes.io/hostname": "node3"},
}},
}
fp.OnEndpointSliceAdd(endpointSlice)
fp.syncProxyRules()
assert.Equal(t, expectedIPTablesWithSlice, fp.iptablesData.String())
fp.OnEndpointSliceDelete(endpointSlice)
fp.syncProxyRules()
assert.Equal(t, expectedIPTablesWithoutSlice, fp.iptablesData.String())
}
// TODO(thockin): add *more* tests for syncProxyRules() or break it down further and test the pieces.
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