mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-07-22 19:31:44 +00:00
proxy/iptables: Add a unit test with multiple resyncs
This commit is contained in:
Dan Winship
parent
7c27cf0b9b
commit
c12da17838
@ -7537,6 +7537,494 @@ func TestEndpointCommentElision(t *testing.T) {
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}
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}
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// Test calling syncProxyRules() multiple times with various changes
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func TestSyncProxyRulesRepeated(t *testing.T) {
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ipt := iptablestest.NewFake()
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fp := NewFakeProxier(ipt)
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// Create initial state
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var svc2 *v1.Service
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makeServiceMap(fp,
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makeTestService("ns1", "svc1", func(svc *v1.Service) {
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svc.Spec.Type = v1.ServiceTypeClusterIP
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svc.Spec.ClusterIP = "172.30.0.41"
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svc.Spec.Ports = []v1.ServicePort{{
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Name: "p80",
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Port: 80,
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Protocol: v1.ProtocolTCP,
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}}
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}),
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makeTestService("ns2", "svc2", func(svc *v1.Service) {
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svc2 = svc
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svc.Spec.Type = v1.ServiceTypeClusterIP
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svc.Spec.ClusterIP = "172.30.0.42"
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svc.Spec.Ports = []v1.ServicePort{{
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Name: "p8080",
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Port: 8080,
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Protocol: v1.ProtocolTCP,
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}}
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}),
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)
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tcpProtocol := v1.ProtocolTCP
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populateEndpointSlices(fp,
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makeTestEndpointSlice("ns1", "svc1", 1, func(eps *discovery.EndpointSlice) {
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eps.AddressType = discovery.AddressTypeIPv4
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eps.Endpoints = []discovery.Endpoint{{
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Addresses: []string{"10.0.1.1"},
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}}
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eps.Ports = []discovery.EndpointPort{{
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Name: utilpointer.StringPtr("p80"),
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Port: utilpointer.Int32(80),
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Protocol: &tcpProtocol,
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}}
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}),
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makeTestEndpointSlice("ns2", "svc2", 1, func(eps *discovery.EndpointSlice) {
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eps.AddressType = discovery.AddressTypeIPv4
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eps.Endpoints = []discovery.Endpoint{{
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Addresses: []string{"10.0.2.1"},
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}}
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eps.Ports = []discovery.EndpointPort{{
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Name: utilpointer.StringPtr("p8080"),
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Port: utilpointer.Int32(8080),
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Protocol: &tcpProtocol,
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}}
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}),
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)
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fp.syncProxyRules()
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expected := dedent.Dedent(`
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*filter
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:KUBE-NODEPORTS - [0:0]
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:KUBE-SERVICES - [0:0]
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:KUBE-EXTERNAL-SERVICES - [0:0]
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:KUBE-FORWARD - [0:0]
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-A KUBE-FORWARD -m conntrack --ctstate INVALID -j DROP
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-A KUBE-FORWARD -m comment --comment "kubernetes forwarding rules" -m mark --mark 0x4000/0x4000 -j ACCEPT
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-A KUBE-FORWARD -m comment --comment "kubernetes forwarding conntrack rule" -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
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COMMIT
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*nat
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:KUBE-NODEPORTS - [0:0]
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:KUBE-SERVICES - [0:0]
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:KUBE-MARK-MASQ - [0:0]
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:KUBE-POSTROUTING - [0:0]
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:KUBE-SEP-SNQ3ZNILQDEJNDQO - [0:0]
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:KUBE-SEP-UHEGFW77JX3KXTOV - [0:0]
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:KUBE-SVC-2VJB64SDSIJUP5T6 - [0:0]
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:KUBE-SVC-XPGD46QRK7WJZT7O - [0:0]
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-A KUBE-SERVICES -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 -j KUBE-SVC-XPGD46QRK7WJZT7O
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-A KUBE-SERVICES -m comment --comment "ns2/svc2:p8080 cluster IP" -m tcp -p tcp -d 172.30.0.42 --dport 8080 -j KUBE-SVC-2VJB64SDSIJUP5T6
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-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
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-A KUBE-MARK-MASQ -j MARK --or-mark 0x4000
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-A KUBE-POSTROUTING -m mark ! --mark 0x4000/0x4000 -j RETURN
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-A KUBE-POSTROUTING -j MARK --xor-mark 0x4000
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-A KUBE-POSTROUTING -m comment --comment "kubernetes service traffic requiring SNAT" -j MASQUERADE
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-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -s 10.0.1.1 -j KUBE-MARK-MASQ
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-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.1.1:80
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-A KUBE-SEP-UHEGFW77JX3KXTOV -m comment --comment ns2/svc2:p8080 -s 10.0.2.1 -j KUBE-MARK-MASQ
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-A KUBE-SEP-UHEGFW77JX3KXTOV -m comment --comment ns2/svc2:p8080 -m tcp -p tcp -j DNAT --to-destination 10.0.2.1:8080
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-A KUBE-SVC-2VJB64SDSIJUP5T6 -m comment --comment "ns2/svc2:p8080 cluster IP" -m tcp -p tcp -d 172.30.0.42 --dport 8080 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
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-A KUBE-SVC-2VJB64SDSIJUP5T6 -m comment --comment "ns2/svc2:p8080 -> 10.0.2.1:8080" -j KUBE-SEP-UHEGFW77JX3KXTOV
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-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
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-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 -> 10.0.1.1:80" -j KUBE-SEP-SNQ3ZNILQDEJNDQO
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COMMIT
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`)
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assertIPTablesRulesEqual(t, getLine(), expected, fp.iptablesData.String())
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// Add a new service and its endpoints
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makeServiceMap(fp,
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makeTestService("ns3", "svc3", func(svc *v1.Service) {
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svc.Spec.Type = v1.ServiceTypeClusterIP
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svc.Spec.ClusterIP = "172.30.0.43"
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svc.Spec.Ports = []v1.ServicePort{{
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Name: "p80",
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Port: 80,
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Protocol: v1.ProtocolTCP,
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}}
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}),
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)
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var eps3 *discovery.EndpointSlice
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populateEndpointSlices(fp,
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makeTestEndpointSlice("ns3", "svc3", 1, func(eps *discovery.EndpointSlice) {
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eps3 = eps
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eps.AddressType = discovery.AddressTypeIPv4
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eps.Endpoints = []discovery.Endpoint{{
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Addresses: []string{"10.0.3.1"},
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}}
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eps.Ports = []discovery.EndpointPort{{
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Name: utilpointer.StringPtr("p80"),
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Port: utilpointer.Int32(80),
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Protocol: &tcpProtocol,
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}}
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}),
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)
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fp.syncProxyRules()
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expected = dedent.Dedent(`
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*filter
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:KUBE-NODEPORTS - [0:0]
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:KUBE-SERVICES - [0:0]
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:KUBE-EXTERNAL-SERVICES - [0:0]
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:KUBE-FORWARD - [0:0]
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-A KUBE-FORWARD -m conntrack --ctstate INVALID -j DROP
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-A KUBE-FORWARD -m comment --comment "kubernetes forwarding rules" -m mark --mark 0x4000/0x4000 -j ACCEPT
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-A KUBE-FORWARD -m comment --comment "kubernetes forwarding conntrack rule" -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
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COMMIT
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*nat
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:KUBE-NODEPORTS - [0:0]
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:KUBE-SERVICES - [0:0]
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:KUBE-MARK-MASQ - [0:0]
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:KUBE-POSTROUTING - [0:0]
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:KUBE-SEP-BSWRHOQ77KEXZLNL - [0:0]
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:KUBE-SEP-SNQ3ZNILQDEJNDQO - [0:0]
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:KUBE-SEP-UHEGFW77JX3KXTOV - [0:0]
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:KUBE-SVC-2VJB64SDSIJUP5T6 - [0:0]
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:KUBE-SVC-X27LE4BHSL4DOUIK - [0:0]
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:KUBE-SVC-XPGD46QRK7WJZT7O - [0:0]
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-A KUBE-SERVICES -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 -j KUBE-SVC-XPGD46QRK7WJZT7O
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-A KUBE-SERVICES -m comment --comment "ns2/svc2:p8080 cluster IP" -m tcp -p tcp -d 172.30.0.42 --dport 8080 -j KUBE-SVC-2VJB64SDSIJUP5T6
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-A KUBE-SERVICES -m comment --comment "ns3/svc3:p80 cluster IP" -m tcp -p tcp -d 172.30.0.43 --dport 80 -j KUBE-SVC-X27LE4BHSL4DOUIK
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-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
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-A KUBE-MARK-MASQ -j MARK --or-mark 0x4000
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-A KUBE-POSTROUTING -m mark ! --mark 0x4000/0x4000 -j RETURN
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-A KUBE-POSTROUTING -j MARK --xor-mark 0x4000
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-A KUBE-POSTROUTING -m comment --comment "kubernetes service traffic requiring SNAT" -j MASQUERADE
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-A KUBE-SEP-BSWRHOQ77KEXZLNL -m comment --comment ns3/svc3:p80 -s 10.0.3.1 -j KUBE-MARK-MASQ
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-A KUBE-SEP-BSWRHOQ77KEXZLNL -m comment --comment ns3/svc3:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.3.1:80
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-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -s 10.0.1.1 -j KUBE-MARK-MASQ
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-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.1.1:80
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-A KUBE-SEP-UHEGFW77JX3KXTOV -m comment --comment ns2/svc2:p8080 -s 10.0.2.1 -j KUBE-MARK-MASQ
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-A KUBE-SEP-UHEGFW77JX3KXTOV -m comment --comment ns2/svc2:p8080 -m tcp -p tcp -j DNAT --to-destination 10.0.2.1:8080
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-A KUBE-SVC-2VJB64SDSIJUP5T6 -m comment --comment "ns2/svc2:p8080 cluster IP" -m tcp -p tcp -d 172.30.0.42 --dport 8080 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
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-A KUBE-SVC-2VJB64SDSIJUP5T6 -m comment --comment "ns2/svc2:p8080 -> 10.0.2.1:8080" -j KUBE-SEP-UHEGFW77JX3KXTOV
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-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 cluster IP" -m tcp -p tcp -d 172.30.0.43 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
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-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 -> 10.0.3.1:80" -j KUBE-SEP-BSWRHOQ77KEXZLNL
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-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
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-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 -> 10.0.1.1:80" -j KUBE-SEP-SNQ3ZNILQDEJNDQO
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COMMIT
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`)
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assertIPTablesRulesEqual(t, getLine(), expected, fp.iptablesData.String())
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// Delete a service
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fp.OnServiceDelete(svc2)
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fp.syncProxyRules()
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expected = dedent.Dedent(`
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*filter
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:KUBE-NODEPORTS - [0:0]
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:KUBE-SERVICES - [0:0]
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:KUBE-EXTERNAL-SERVICES - [0:0]
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:KUBE-FORWARD - [0:0]
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-A KUBE-FORWARD -m conntrack --ctstate INVALID -j DROP
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-A KUBE-FORWARD -m comment --comment "kubernetes forwarding rules" -m mark --mark 0x4000/0x4000 -j ACCEPT
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-A KUBE-FORWARD -m comment --comment "kubernetes forwarding conntrack rule" -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
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COMMIT
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*nat
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:KUBE-NODEPORTS - [0:0]
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:KUBE-SERVICES - [0:0]
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:KUBE-MARK-MASQ - [0:0]
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:KUBE-POSTROUTING - [0:0]
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:KUBE-SEP-BSWRHOQ77KEXZLNL - [0:0]
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:KUBE-SEP-SNQ3ZNILQDEJNDQO - [0:0]
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:KUBE-SEP-UHEGFW77JX3KXTOV - [0:0]
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:KUBE-SVC-2VJB64SDSIJUP5T6 - [0:0]
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:KUBE-SVC-X27LE4BHSL4DOUIK - [0:0]
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:KUBE-SVC-XPGD46QRK7WJZT7O - [0:0]
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-A KUBE-SERVICES -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 -j KUBE-SVC-XPGD46QRK7WJZT7O
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-A KUBE-SERVICES -m comment --comment "ns3/svc3:p80 cluster IP" -m tcp -p tcp -d 172.30.0.43 --dport 80 -j KUBE-SVC-X27LE4BHSL4DOUIK
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-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
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-A KUBE-MARK-MASQ -j MARK --or-mark 0x4000
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-A KUBE-POSTROUTING -m mark ! --mark 0x4000/0x4000 -j RETURN
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-A KUBE-POSTROUTING -j MARK --xor-mark 0x4000
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-A KUBE-POSTROUTING -m comment --comment "kubernetes service traffic requiring SNAT" -j MASQUERADE
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-A KUBE-SEP-BSWRHOQ77KEXZLNL -m comment --comment ns3/svc3:p80 -s 10.0.3.1 -j KUBE-MARK-MASQ
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-A KUBE-SEP-BSWRHOQ77KEXZLNL -m comment --comment ns3/svc3:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.3.1:80
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-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -s 10.0.1.1 -j KUBE-MARK-MASQ
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-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.1.1:80
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-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 cluster IP" -m tcp -p tcp -d 172.30.0.43 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
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-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 -> 10.0.3.1:80" -j KUBE-SEP-BSWRHOQ77KEXZLNL
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-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
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-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 -> 10.0.1.1:80" -j KUBE-SEP-SNQ3ZNILQDEJNDQO
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-X KUBE-SEP-UHEGFW77JX3KXTOV
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-X KUBE-SVC-2VJB64SDSIJUP5T6
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COMMIT
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`)
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assertIPTablesRulesEqual(t, getLine(), expected, fp.iptablesData.String())
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// Add a service, sync, then add its endpoints
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makeServiceMap(fp,
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makeTestService("ns4", "svc4", func(svc *v1.Service) {
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svc.Spec.Type = v1.ServiceTypeClusterIP
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svc.Spec.ClusterIP = "172.30.0.44"
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svc.Spec.Ports = []v1.ServicePort{{
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Name: "p80",
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Port: 80,
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Protocol: v1.ProtocolTCP,
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}}
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}),
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)
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fp.syncProxyRules()
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expected = dedent.Dedent(`
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*filter
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:KUBE-NODEPORTS - [0:0]
|
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:KUBE-SERVICES - [0:0]
|
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:KUBE-EXTERNAL-SERVICES - [0:0]
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:KUBE-FORWARD - [0:0]
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-A KUBE-SERVICES -m comment --comment "ns4/svc4:p80 has no endpoints" -m tcp -p tcp -d 172.30.0.44 --dport 80 -j REJECT
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-A KUBE-FORWARD -m conntrack --ctstate INVALID -j DROP
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-A KUBE-FORWARD -m comment --comment "kubernetes forwarding rules" -m mark --mark 0x4000/0x4000 -j ACCEPT
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-A KUBE-FORWARD -m comment --comment "kubernetes forwarding conntrack rule" -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
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COMMIT
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*nat
|
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:KUBE-NODEPORTS - [0:0]
|
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:KUBE-SERVICES - [0:0]
|
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:KUBE-MARK-MASQ - [0:0]
|
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:KUBE-POSTROUTING - [0:0]
|
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:KUBE-SEP-BSWRHOQ77KEXZLNL - [0:0]
|
||||
:KUBE-SEP-SNQ3ZNILQDEJNDQO - [0:0]
|
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:KUBE-SVC-X27LE4BHSL4DOUIK - [0:0]
|
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:KUBE-SVC-XPGD46QRK7WJZT7O - [0:0]
|
||||
-A KUBE-SERVICES -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 -j KUBE-SVC-XPGD46QRK7WJZT7O
|
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-A KUBE-SERVICES -m comment --comment "ns3/svc3:p80 cluster IP" -m tcp -p tcp -d 172.30.0.43 --dport 80 -j KUBE-SVC-X27LE4BHSL4DOUIK
|
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-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
|
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-A KUBE-MARK-MASQ -j MARK --or-mark 0x4000
|
||||
-A KUBE-POSTROUTING -m mark ! --mark 0x4000/0x4000 -j RETURN
|
||||
-A KUBE-POSTROUTING -j MARK --xor-mark 0x4000
|
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-A KUBE-POSTROUTING -m comment --comment "kubernetes service traffic requiring SNAT" -j MASQUERADE
|
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-A KUBE-SEP-BSWRHOQ77KEXZLNL -m comment --comment ns3/svc3:p80 -s 10.0.3.1 -j KUBE-MARK-MASQ
|
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-A KUBE-SEP-BSWRHOQ77KEXZLNL -m comment --comment ns3/svc3:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.3.1:80
|
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-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -s 10.0.1.1 -j KUBE-MARK-MASQ
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-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.1.1:80
|
||||
-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 cluster IP" -m tcp -p tcp -d 172.30.0.43 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 -> 10.0.3.1:80" -j KUBE-SEP-BSWRHOQ77KEXZLNL
|
||||
-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 -> 10.0.1.1:80" -j KUBE-SEP-SNQ3ZNILQDEJNDQO
|
||||
COMMIT
|
||||
`)
|
||||
assertIPTablesRulesEqual(t, getLine(), expected, fp.iptablesData.String())
|
||||
|
||||
populateEndpointSlices(fp,
|
||||
makeTestEndpointSlice("ns4", "svc4", 1, func(eps *discovery.EndpointSlice) {
|
||||
eps.AddressType = discovery.AddressTypeIPv4
|
||||
eps.Endpoints = []discovery.Endpoint{{
|
||||
Addresses: []string{"10.0.4.1"},
|
||||
}}
|
||||
eps.Ports = []discovery.EndpointPort{{
|
||||
Name: utilpointer.StringPtr("p80"),
|
||||
Port: utilpointer.Int32(80),
|
||||
Protocol: &tcpProtocol,
|
||||
}}
|
||||
}),
|
||||
)
|
||||
fp.syncProxyRules()
|
||||
expected = dedent.Dedent(`
|
||||
*filter
|
||||
:KUBE-NODEPORTS - [0:0]
|
||||
: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 0x4000/0x4000 -j ACCEPT
|
||||
-A KUBE-FORWARD -m comment --comment "kubernetes forwarding conntrack rule" -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
|
||||
COMMIT
|
||||
*nat
|
||||
:KUBE-NODEPORTS - [0:0]
|
||||
:KUBE-SERVICES - [0:0]
|
||||
:KUBE-MARK-MASQ - [0:0]
|
||||
:KUBE-POSTROUTING - [0:0]
|
||||
:KUBE-SEP-AYCN5HPXMIRJNJXU - [0:0]
|
||||
:KUBE-SEP-BSWRHOQ77KEXZLNL - [0:0]
|
||||
:KUBE-SEP-SNQ3ZNILQDEJNDQO - [0:0]
|
||||
:KUBE-SVC-4SW47YFZTEDKD3PK - [0:0]
|
||||
:KUBE-SVC-X27LE4BHSL4DOUIK - [0:0]
|
||||
:KUBE-SVC-XPGD46QRK7WJZT7O - [0:0]
|
||||
-A KUBE-SERVICES -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 -j KUBE-SVC-XPGD46QRK7WJZT7O
|
||||
-A KUBE-SERVICES -m comment --comment "ns3/svc3:p80 cluster IP" -m tcp -p tcp -d 172.30.0.43 --dport 80 -j KUBE-SVC-X27LE4BHSL4DOUIK
|
||||
-A KUBE-SERVICES -m comment --comment "ns4/svc4:p80 cluster IP" -m tcp -p tcp -d 172.30.0.44 --dport 80 -j KUBE-SVC-4SW47YFZTEDKD3PK
|
||||
-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
|
||||
-A KUBE-MARK-MASQ -j MARK --or-mark 0x4000
|
||||
-A KUBE-POSTROUTING -m mark ! --mark 0x4000/0x4000 -j RETURN
|
||||
-A KUBE-POSTROUTING -j MARK --xor-mark 0x4000
|
||||
-A KUBE-POSTROUTING -m comment --comment "kubernetes service traffic requiring SNAT" -j MASQUERADE
|
||||
-A KUBE-SEP-AYCN5HPXMIRJNJXU -m comment --comment ns4/svc4:p80 -s 10.0.4.1 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SEP-AYCN5HPXMIRJNJXU -m comment --comment ns4/svc4:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.4.1:80
|
||||
-A KUBE-SEP-BSWRHOQ77KEXZLNL -m comment --comment ns3/svc3:p80 -s 10.0.3.1 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SEP-BSWRHOQ77KEXZLNL -m comment --comment ns3/svc3:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.3.1:80
|
||||
-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -s 10.0.1.1 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.1.1:80
|
||||
-A KUBE-SVC-4SW47YFZTEDKD3PK -m comment --comment "ns4/svc4:p80 cluster IP" -m tcp -p tcp -d 172.30.0.44 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SVC-4SW47YFZTEDKD3PK -m comment --comment "ns4/svc4:p80 -> 10.0.4.1:80" -j KUBE-SEP-AYCN5HPXMIRJNJXU
|
||||
-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 cluster IP" -m tcp -p tcp -d 172.30.0.43 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 -> 10.0.3.1:80" -j KUBE-SEP-BSWRHOQ77KEXZLNL
|
||||
-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 -> 10.0.1.1:80" -j KUBE-SEP-SNQ3ZNILQDEJNDQO
|
||||
COMMIT
|
||||
`)
|
||||
assertIPTablesRulesEqual(t, getLine(), expected, fp.iptablesData.String())
|
||||
|
||||
// Change an endpoint of an existing service
|
||||
eps3update := eps3.DeepCopy()
|
||||
eps3update.Endpoints[0].Addresses[0] = "10.0.3.2"
|
||||
fp.OnEndpointSliceUpdate(eps3, eps3update)
|
||||
fp.syncProxyRules()
|
||||
|
||||
expected = dedent.Dedent(`
|
||||
*filter
|
||||
:KUBE-NODEPORTS - [0:0]
|
||||
: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 0x4000/0x4000 -j ACCEPT
|
||||
-A KUBE-FORWARD -m comment --comment "kubernetes forwarding conntrack rule" -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
|
||||
COMMIT
|
||||
*nat
|
||||
:KUBE-NODEPORTS - [0:0]
|
||||
:KUBE-SERVICES - [0:0]
|
||||
:KUBE-MARK-MASQ - [0:0]
|
||||
:KUBE-POSTROUTING - [0:0]
|
||||
:KUBE-SEP-AYCN5HPXMIRJNJXU - [0:0]
|
||||
:KUBE-SEP-BSWRHOQ77KEXZLNL - [0:0]
|
||||
:KUBE-SEP-DKCFIS26GWF2WLWC - [0:0]
|
||||
:KUBE-SEP-SNQ3ZNILQDEJNDQO - [0:0]
|
||||
:KUBE-SVC-4SW47YFZTEDKD3PK - [0:0]
|
||||
:KUBE-SVC-X27LE4BHSL4DOUIK - [0:0]
|
||||
:KUBE-SVC-XPGD46QRK7WJZT7O - [0:0]
|
||||
-A KUBE-SERVICES -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 -j KUBE-SVC-XPGD46QRK7WJZT7O
|
||||
-A KUBE-SERVICES -m comment --comment "ns3/svc3:p80 cluster IP" -m tcp -p tcp -d 172.30.0.43 --dport 80 -j KUBE-SVC-X27LE4BHSL4DOUIK
|
||||
-A KUBE-SERVICES -m comment --comment "ns4/svc4:p80 cluster IP" -m tcp -p tcp -d 172.30.0.44 --dport 80 -j KUBE-SVC-4SW47YFZTEDKD3PK
|
||||
-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
|
||||
-A KUBE-MARK-MASQ -j MARK --or-mark 0x4000
|
||||
-A KUBE-POSTROUTING -m mark ! --mark 0x4000/0x4000 -j RETURN
|
||||
-A KUBE-POSTROUTING -j MARK --xor-mark 0x4000
|
||||
-A KUBE-POSTROUTING -m comment --comment "kubernetes service traffic requiring SNAT" -j MASQUERADE
|
||||
-A KUBE-SEP-AYCN5HPXMIRJNJXU -m comment --comment ns4/svc4:p80 -s 10.0.4.1 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SEP-AYCN5HPXMIRJNJXU -m comment --comment ns4/svc4:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.4.1:80
|
||||
-A KUBE-SEP-DKCFIS26GWF2WLWC -m comment --comment ns3/svc3:p80 -s 10.0.3.2 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SEP-DKCFIS26GWF2WLWC -m comment --comment ns3/svc3:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.3.2:80
|
||||
-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -s 10.0.1.1 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.1.1:80
|
||||
-A KUBE-SVC-4SW47YFZTEDKD3PK -m comment --comment "ns4/svc4:p80 cluster IP" -m tcp -p tcp -d 172.30.0.44 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SVC-4SW47YFZTEDKD3PK -m comment --comment "ns4/svc4:p80 -> 10.0.4.1:80" -j KUBE-SEP-AYCN5HPXMIRJNJXU
|
||||
-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 cluster IP" -m tcp -p tcp -d 172.30.0.43 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 -> 10.0.3.2:80" -j KUBE-SEP-DKCFIS26GWF2WLWC
|
||||
-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 -> 10.0.1.1:80" -j KUBE-SEP-SNQ3ZNILQDEJNDQO
|
||||
-X KUBE-SEP-BSWRHOQ77KEXZLNL
|
||||
COMMIT
|
||||
`)
|
||||
assertIPTablesRulesEqual(t, getLine(), expected, fp.iptablesData.String())
|
||||
|
||||
// Add an endpoint to a service
|
||||
eps3update2 := eps3update.DeepCopy()
|
||||
eps3update2.Endpoints = append(eps3update2.Endpoints, discovery.Endpoint{Addresses: []string{"10.0.3.3"}})
|
||||
fp.OnEndpointSliceUpdate(eps3update, eps3update2)
|
||||
fp.syncProxyRules()
|
||||
|
||||
expected = dedent.Dedent(`
|
||||
*filter
|
||||
:KUBE-NODEPORTS - [0:0]
|
||||
: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 0x4000/0x4000 -j ACCEPT
|
||||
-A KUBE-FORWARD -m comment --comment "kubernetes forwarding conntrack rule" -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
|
||||
COMMIT
|
||||
*nat
|
||||
:KUBE-NODEPORTS - [0:0]
|
||||
:KUBE-SERVICES - [0:0]
|
||||
:KUBE-MARK-MASQ - [0:0]
|
||||
:KUBE-POSTROUTING - [0:0]
|
||||
:KUBE-SEP-AYCN5HPXMIRJNJXU - [0:0]
|
||||
:KUBE-SEP-DKCFIS26GWF2WLWC - [0:0]
|
||||
:KUBE-SEP-JVVZVJ7BSEPPRNBS - [0:0]
|
||||
:KUBE-SEP-SNQ3ZNILQDEJNDQO - [0:0]
|
||||
:KUBE-SVC-4SW47YFZTEDKD3PK - [0:0]
|
||||
:KUBE-SVC-X27LE4BHSL4DOUIK - [0:0]
|
||||
:KUBE-SVC-XPGD46QRK7WJZT7O - [0:0]
|
||||
-A KUBE-SERVICES -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 -j KUBE-SVC-XPGD46QRK7WJZT7O
|
||||
-A KUBE-SERVICES -m comment --comment "ns3/svc3:p80 cluster IP" -m tcp -p tcp -d 172.30.0.43 --dport 80 -j KUBE-SVC-X27LE4BHSL4DOUIK
|
||||
-A KUBE-SERVICES -m comment --comment "ns4/svc4:p80 cluster IP" -m tcp -p tcp -d 172.30.0.44 --dport 80 -j KUBE-SVC-4SW47YFZTEDKD3PK
|
||||
-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
|
||||
-A KUBE-MARK-MASQ -j MARK --or-mark 0x4000
|
||||
-A KUBE-POSTROUTING -m mark ! --mark 0x4000/0x4000 -j RETURN
|
||||
-A KUBE-POSTROUTING -j MARK --xor-mark 0x4000
|
||||
-A KUBE-POSTROUTING -m comment --comment "kubernetes service traffic requiring SNAT" -j MASQUERADE
|
||||
-A KUBE-SEP-AYCN5HPXMIRJNJXU -m comment --comment ns4/svc4:p80 -s 10.0.4.1 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SEP-AYCN5HPXMIRJNJXU -m comment --comment ns4/svc4:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.4.1:80
|
||||
-A KUBE-SEP-DKCFIS26GWF2WLWC -m comment --comment ns3/svc3:p80 -s 10.0.3.2 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SEP-DKCFIS26GWF2WLWC -m comment --comment ns3/svc3:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.3.2:80
|
||||
-A KUBE-SEP-JVVZVJ7BSEPPRNBS -m comment --comment ns3/svc3:p80 -s 10.0.3.3 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SEP-JVVZVJ7BSEPPRNBS -m comment --comment ns3/svc3:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.3.3:80
|
||||
-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -s 10.0.1.1 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.1.1:80
|
||||
-A KUBE-SVC-4SW47YFZTEDKD3PK -m comment --comment "ns4/svc4:p80 cluster IP" -m tcp -p tcp -d 172.30.0.44 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SVC-4SW47YFZTEDKD3PK -m comment --comment "ns4/svc4:p80 -> 10.0.4.1:80" -j KUBE-SEP-AYCN5HPXMIRJNJXU
|
||||
-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 cluster IP" -m tcp -p tcp -d 172.30.0.43 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 -> 10.0.3.2:80" -m statistic --mode random --probability 0.5000000000 -j KUBE-SEP-DKCFIS26GWF2WLWC
|
||||
-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 -> 10.0.3.3:80" -j KUBE-SEP-JVVZVJ7BSEPPRNBS
|
||||
-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 -> 10.0.1.1:80" -j KUBE-SEP-SNQ3ZNILQDEJNDQO
|
||||
COMMIT
|
||||
`)
|
||||
assertIPTablesRulesEqual(t, getLine(), expected, fp.iptablesData.String())
|
||||
|
||||
// Sync with no new changes...
|
||||
fp.syncProxyRules()
|
||||
|
||||
expected = dedent.Dedent(`
|
||||
*filter
|
||||
:KUBE-NODEPORTS - [0:0]
|
||||
: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 0x4000/0x4000 -j ACCEPT
|
||||
-A KUBE-FORWARD -m comment --comment "kubernetes forwarding conntrack rule" -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
|
||||
COMMIT
|
||||
*nat
|
||||
:KUBE-NODEPORTS - [0:0]
|
||||
:KUBE-SERVICES - [0:0]
|
||||
:KUBE-MARK-MASQ - [0:0]
|
||||
:KUBE-POSTROUTING - [0:0]
|
||||
:KUBE-SEP-AYCN5HPXMIRJNJXU - [0:0]
|
||||
:KUBE-SEP-DKCFIS26GWF2WLWC - [0:0]
|
||||
:KUBE-SEP-JVVZVJ7BSEPPRNBS - [0:0]
|
||||
:KUBE-SEP-SNQ3ZNILQDEJNDQO - [0:0]
|
||||
:KUBE-SVC-4SW47YFZTEDKD3PK - [0:0]
|
||||
:KUBE-SVC-X27LE4BHSL4DOUIK - [0:0]
|
||||
:KUBE-SVC-XPGD46QRK7WJZT7O - [0:0]
|
||||
-A KUBE-SERVICES -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 -j KUBE-SVC-XPGD46QRK7WJZT7O
|
||||
-A KUBE-SERVICES -m comment --comment "ns3/svc3:p80 cluster IP" -m tcp -p tcp -d 172.30.0.43 --dport 80 -j KUBE-SVC-X27LE4BHSL4DOUIK
|
||||
-A KUBE-SERVICES -m comment --comment "ns4/svc4:p80 cluster IP" -m tcp -p tcp -d 172.30.0.44 --dport 80 -j KUBE-SVC-4SW47YFZTEDKD3PK
|
||||
-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
|
||||
-A KUBE-MARK-MASQ -j MARK --or-mark 0x4000
|
||||
-A KUBE-POSTROUTING -m mark ! --mark 0x4000/0x4000 -j RETURN
|
||||
-A KUBE-POSTROUTING -j MARK --xor-mark 0x4000
|
||||
-A KUBE-POSTROUTING -m comment --comment "kubernetes service traffic requiring SNAT" -j MASQUERADE
|
||||
-A KUBE-SEP-AYCN5HPXMIRJNJXU -m comment --comment ns4/svc4:p80 -s 10.0.4.1 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SEP-AYCN5HPXMIRJNJXU -m comment --comment ns4/svc4:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.4.1:80
|
||||
-A KUBE-SEP-DKCFIS26GWF2WLWC -m comment --comment ns3/svc3:p80 -s 10.0.3.2 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SEP-DKCFIS26GWF2WLWC -m comment --comment ns3/svc3:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.3.2:80
|
||||
-A KUBE-SEP-JVVZVJ7BSEPPRNBS -m comment --comment ns3/svc3:p80 -s 10.0.3.3 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SEP-JVVZVJ7BSEPPRNBS -m comment --comment ns3/svc3:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.3.3:80
|
||||
-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -s 10.0.1.1 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SEP-SNQ3ZNILQDEJNDQO -m comment --comment ns1/svc1:p80 -m tcp -p tcp -j DNAT --to-destination 10.0.1.1:80
|
||||
-A KUBE-SVC-4SW47YFZTEDKD3PK -m comment --comment "ns4/svc4:p80 cluster IP" -m tcp -p tcp -d 172.30.0.44 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SVC-4SW47YFZTEDKD3PK -m comment --comment "ns4/svc4:p80 -> 10.0.4.1:80" -j KUBE-SEP-AYCN5HPXMIRJNJXU
|
||||
-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 cluster IP" -m tcp -p tcp -d 172.30.0.43 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 -> 10.0.3.2:80" -m statistic --mode random --probability 0.5000000000 -j KUBE-SEP-DKCFIS26GWF2WLWC
|
||||
-A KUBE-SVC-X27LE4BHSL4DOUIK -m comment --comment "ns3/svc3:p80 -> 10.0.3.3:80" -j KUBE-SEP-JVVZVJ7BSEPPRNBS
|
||||
-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 cluster IP" -m tcp -p tcp -d 172.30.0.41 --dport 80 ! -s 10.0.0.0/8 -j KUBE-MARK-MASQ
|
||||
-A KUBE-SVC-XPGD46QRK7WJZT7O -m comment --comment "ns1/svc1:p80 -> 10.0.1.1:80" -j KUBE-SEP-SNQ3ZNILQDEJNDQO
|
||||
COMMIT
|
||||
`)
|
||||
assertIPTablesRulesEqual(t, getLine(), expected, fp.iptablesData.String())
|
||||
}
|
||||
|
||||
func TestNoEndpointsMetric(t *testing.T) {
|
||||
type endpoint struct {
|
||||
ip string
|
||||
|
||||
Loading…
Reference in New Issue
Block a user