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egressfirewall_test.go
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egressfirewall_test.go
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package ovn
import (
"context"
"encoding/json"
"fmt"
"net"
"strings"
"time"
"github.com/miekg/dns"
"github.com/onsi/ginkgo"
"github.com/onsi/ginkgo/extensions/table"
"github.com/onsi/gomega"
"github.com/stretchr/testify/mock"
"github.com/urfave/cli/v2"
ocpnetworkapiv1alpha1 "github.com/openshift/api/network/v1alpha1"
"github.com/ovn-org/ovn-kubernetes/go-controller/pkg/config"
egressfirewallapi "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/crd/egressfirewall/v1"
libovsdbops "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/libovsdb/ops"
libovsdbutil "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/libovsdb/util"
"github.com/ovn-org/ovn-kubernetes/go-controller/pkg/nbdb"
addressset "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/ovn/address_set"
dnsnameresolver "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/ovn/dns_name_resolver"
"github.com/ovn-org/ovn-kubernetes/go-controller/pkg/retry"
ovntest "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/testing"
"github.com/ovn-org/ovn-kubernetes/go-controller/pkg/testing/libovsdb"
libovsdbtest "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/testing/libovsdb"
t "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/types"
"github.com/ovn-org/ovn-kubernetes/go-controller/pkg/util"
util_mocks "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/util/mocks"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/sets"
utilnet "k8s.io/utils/net"
)
func newObjectMeta(name, namespace string) metav1.ObjectMeta {
return metav1.ObjectMeta{
UID: types.UID(namespace),
Name: name,
Namespace: namespace,
}
}
func newEgressFirewallObject(name, namespace string, egressRules []egressfirewallapi.EgressFirewallRule) *egressfirewallapi.EgressFirewall {
return &egressfirewallapi.EgressFirewall{
ObjectMeta: newObjectMeta(name, namespace),
Spec: egressfirewallapi.EgressFirewallSpec{
Egress: egressRules,
},
}
}
func newDNSNameResolverObject(name, namespace, dnsName string, ip string) *ocpnetworkapiv1alpha1.DNSNameResolver {
return &ocpnetworkapiv1alpha1.DNSNameResolver{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: namespace,
},
Spec: ocpnetworkapiv1alpha1.DNSNameResolverSpec{
Name: ocpnetworkapiv1alpha1.DNSName(dnsName),
},
Status: ocpnetworkapiv1alpha1.DNSNameResolverStatus{
ResolvedNames: []ocpnetworkapiv1alpha1.DNSNameResolverResolvedName{
{
DNSName: ocpnetworkapiv1alpha1.DNSName(dnsName),
ResolvedAddresses: []ocpnetworkapiv1alpha1.DNSNameResolverResolvedAddress{
{
IP: ip,
},
},
},
},
},
}
}
func getEFExpectedDb(initialData []libovsdbtest.TestData, fakeOVN *FakeOVN, nsName string, dstMatch, portMatch string,
action nbdb.ACLAction) []libovsdbtest.TestData {
pgName := fakeOVN.controller.getNamespacePortGroupName(nsName)
dbIDs := fakeOVN.controller.getEgressFirewallACLDbIDs(nsName, 0)
match := dstMatch + " && inport == @" + pgName
if portMatch != "" {
match += " && " + portMatch
}
acl := libovsdbops.BuildACL(
libovsdbutil.GetACLName(dbIDs),
nbdb.ACLDirectionToLport,
t.EgressFirewallStartPriority,
match,
action,
t.OvnACLLoggingMeter,
"",
false,
dbIDs.GetExternalIDs(),
nil,
t.DefaultACLTier,
)
acl.UUID = "acl-UUID"
// new ACL will be added to the port group
pgIDs := getNamespacePortGroupDbIDs(nsName, DefaultNetworkControllerName)
namespacePortGroup := libovsdbutil.BuildPortGroup(pgIDs, nil, []*nbdb.ACL{acl})
namespacePortGroup.UUID = pgName + "-UUID"
return append(initialData, acl, namespacePortGroup)
}
func getEFExpectedDbAfterDelete(prevExpectedData []libovsdbtest.TestData) []libovsdbtest.TestData {
pg := prevExpectedData[len(prevExpectedData)-1].(*nbdb.PortGroup)
pg.ACLs = nil
return append(prevExpectedData[:len(prevExpectedData)-2], pg)
}
var _ = ginkgo.Describe("OVN EgressFirewall Operations", func() {
var (
app *cli.App
fakeOVN *FakeOVN
clusterPortGroup *nbdb.PortGroup
nodeSwitch, joinSwitch *nbdb.LogicalSwitch
initialData []libovsdbtest.TestData
dbSetup libovsdbtest.TestSetup
mockDnsOps *util_mocks.DNSOps
)
const (
node1Name string = "node1"
node2Name string = "node2"
)
clusterRouter := &nbdb.LogicalRouter{
UUID: t.OVNClusterRouter + "-UUID",
Name: t.OVNClusterRouter,
}
setMockDnsOps := func() {
mockDnsOps = new(util_mocks.DNSOps)
util.SetDNSLibOpsMockInst(mockDnsOps)
}
setDNSMockServer := func() {
mockClientConfigFromFile := ovntest.TestifyMockHelper{
OnCallMethodName: "ClientConfigFromFile",
OnCallMethodArgType: []string{"string"},
OnCallMethodArgs: []interface{}{},
RetArgList: []interface{}{&dns.ClientConfig{
Servers: []string{"1.1.1.1"},
Port: "1234"}, nil},
OnCallMethodsArgsStrTypeAppendCount: 0,
CallTimes: 1,
}
call := mockDnsOps.On(mockClientConfigFromFile.OnCallMethodName)
for _, arg := range mockClientConfigFromFile.OnCallMethodArgType {
call.Arguments = append(call.Arguments, mock.AnythingOfType(arg))
}
for _, ret := range mockClientConfigFromFile.RetArgList {
call.ReturnArguments = append(call.ReturnArguments, ret)
}
call.Once()
}
generateRR := func(dnsName, ip, nextQueryTime string) dns.RR {
var rr dns.RR
if utilnet.IsIPv6(net.ParseIP(ip)) {
rr, _ = dns.NewRR(dnsName + ". " + nextQueryTime + " IN AAAA " + ip)
} else {
rr, _ = dns.NewRR(dnsName + ". " + nextQueryTime + " IN A " + ip)
}
return rr
}
setDNSOpsMock := func(dnsName, retIP string) {
methods := []ovntest.TestifyMockHelper{
{"Fqdn", []string{"string"}, []interface{}{}, []interface{}{dnsName}, 0, 1},
{"SetQuestion", []string{"*dns.Msg", "string", "uint16"}, []interface{}{}, []interface{}{&dns.Msg{}}, 0, 1},
{"Exchange", []string{"*dns.Client", "*dns.Msg", "string"}, []interface{}{}, []interface{}{&dns.Msg{Answer: []dns.RR{generateRR(dnsName, retIP, "300")}}, 500 * time.Second, nil}, 0, 1},
}
for _, item := range methods {
call := mockDnsOps.On(item.OnCallMethodName)
for _, arg := range item.OnCallMethodArgType {
call.Arguments = append(call.Arguments, mock.AnythingOfType(arg))
}
for _, ret := range item.RetArgList {
call.ReturnArguments = append(call.ReturnArguments, ret)
}
call.Once()
}
}
startDNSNameResolver := func(oldDNS bool) {
var err error
if oldDNS {
setMockDnsOps()
setDNSMockServer()
fakeOVN.controller.dnsNameResolver, err = dnsnameresolver.NewEgressDNS(fakeOVN.controller.addressSetFactory,
fakeOVN.controller.controllerName, fakeOVN.controller.stopChan, egressFirewallDNSDefaultDuration)
gomega.Expect(err).NotTo(gomega.HaveOccurred())
} else {
// Initialize the dnsNameResolver.
fakeOVN.controller.dnsNameResolver, err = dnsnameresolver.NewExternalEgressDNS(fakeOVN.controller.addressSetFactory,
fakeOVN.controller.controllerName, true, fakeOVN.watcher.DNSNameResolverInformer().Informer(),
fakeOVN.watcher.EgressFirewallInformer().Lister())
gomega.Expect(err).NotTo(gomega.HaveOccurred())
err = fakeOVN.controller.dnsNameResolver.Run()
gomega.Expect(err).NotTo(gomega.HaveOccurred())
}
}
startOvnWithNodes := func(dbSetup libovsdb.TestSetup, namespaces []v1.Namespace, egressFirewalls []egressfirewallapi.EgressFirewall,
nodes []v1.Node, oldDNS bool) {
fakeOVN.startWithDBSetup(dbSetup,
&egressfirewallapi.EgressFirewallList{
Items: egressFirewalls,
},
&v1.NamespaceList{
Items: namespaces,
},
&v1.NodeList{
Items: nodes,
},
)
err := fakeOVN.controller.WatchNamespaces()
gomega.Expect(err).NotTo(gomega.HaveOccurred())
startDNSNameResolver(oldDNS)
err = fakeOVN.controller.WatchEgressFirewall()
gomega.Expect(err).NotTo(gomega.HaveOccurred())
err = fakeOVN.controller.WatchEgressFwNodes()
gomega.Expect(err).NotTo(gomega.HaveOccurred())
for _, namespace := range namespaces {
namespaceASip4, namespaceASip6 := buildNamespaceAddressSets(namespace.Name, []string{})
if config.IPv4Mode {
initialData = append(initialData, namespaceASip4)
}
if config.IPv6Mode {
initialData = append(initialData, namespaceASip6)
}
}
}
startOvn := func(dbSetup libovsdb.TestSetup, namespaces []v1.Namespace, egressFirewalls []egressfirewallapi.EgressFirewall, oldDNS bool) {
startOvnWithNodes(dbSetup, namespaces, egressFirewalls, nil, oldDNS)
}
ginkgo.BeforeEach(func() {
// Restore global default values before each testcase
config.PrepareTestConfig()
config.OVNKubernetesFeature.EnableEgressFirewall = true
app = cli.NewApp()
app.Name = "test"
app.Flags = config.Flags
fakeOVN = NewFakeOVN(false)
clusterPortGroup = newClusterPortGroup()
nodeSwitch = &nbdb.LogicalSwitch{
UUID: node1Name + "-UUID",
Name: node1Name,
}
joinSwitch = &nbdb.LogicalSwitch{
UUID: "join-UUID",
Name: "join",
}
initialData = []libovsdbtest.TestData{
nodeSwitch,
joinSwitch,
clusterPortGroup,
clusterRouter,
}
dbSetup = libovsdbtest.TestSetup{
NBData: initialData,
}
})
ginkgo.AfterEach(func() {
fakeOVN.shutdown()
})
for _, gwMode := range []config.GatewayMode{config.GatewayModeLocal, config.GatewayModeShared} {
gwMode := gwMode
ginkgo.Context("on startup", func() {
ginkgo.It(fmt.Sprintf("reconciles stale ACLs, gateway mode %s", gwMode), func() {
config.Gateway.Mode = gwMode
app.Action = func(ctx *cli.Context) error {
// owned by non-existing namespace
fakeController := getFakeController(DefaultNetworkControllerName)
purgeIDs := fakeController.getEgressFirewallACLDbIDs("none", 0)
purgeACL := libovsdbops.BuildACL(
"purgeACL1",
nbdb.ACLDirectionFromLport,
t.EgressFirewallStartPriority,
"",
nbdb.ACLActionDrop,
t.OvnACLLoggingMeter,
"",
false,
purgeIDs.GetExternalIDs(),
nil,
t.PlaceHolderACLTier,
)
purgeACL.UUID = "purgeACL-UUID"
// no externalIDs present => dbIDs can't be built
purgeACL2 := libovsdbops.BuildACL(
"purgeACL2",
nbdb.ACLDirectionFromLport,
t.EgressFirewallStartPriority,
"",
nbdb.ACLActionDrop,
t.OvnACLLoggingMeter,
"",
false,
nil,
nil,
// we should not be in a situation where we have ACLs without externalIDs
// but if we do have such lame ACLs then they will interfere with AdminNetPol logic
t.PlaceHolderACLTier,
)
purgeACL2.UUID = "purgeACL2-UUID"
namespace1 := *newNamespace("namespace1")
namespace1ASip4, _ := buildNamespaceAddressSets(namespace1.Name, []string{})
egressFirewall := newEgressFirewallObject("default", namespace1.Name, []egressfirewallapi.EgressFirewallRule{
{
Type: "Allow",
To: egressfirewallapi.EgressFirewallDestination{
CIDRSelector: "1.2.3.4/23",
},
},
})
updateIDs := fakeController.getEgressFirewallACLDbIDs(namespace1.Name, 0)
updateACL := libovsdbops.BuildACL(
"",
nbdb.ACLDirectionFromLport,
t.EgressFirewallStartPriority,
"(ip4.dst == 1.2.3.4/23) && ip4.src == $a10481622940199974102 && ip4.dst != 10.128.0.0/14",
nbdb.ACLActionAllow,
t.OvnACLLoggingMeter,
nbdb.ACLSeverityInfo,
false,
updateIDs.GetExternalIDs(),
nil,
t.PlaceHolderACLTier,
)
updateACL.UUID = "updateACL-UUID"
// this ACL is not in the egress firewall priority range and should be untouched
ignoreACL := libovsdbops.BuildACL(
"ignoreACL",
nbdb.ACLDirectionFromLport,
t.MinimumReservedEgressFirewallPriority-1,
"",
nbdb.ACLActionDrop,
t.OvnACLLoggingMeter,
"",
false,
nil,
nil,
// we should not be in a situation where we have unknown ACL that doesn't belong to any feature
// but if we do have such lame ACLs then they will interfere with AdminNetPol logic
t.PlaceHolderACLTier,
)
ignoreACL.UUID = "ignoreACL-UUID"
nodeSwitch.ACLs = []string{purgeACL.UUID, purgeACL2.UUID, updateACL.UUID, ignoreACL.UUID}
joinSwitch.ACLs = []string{purgeACL.UUID, purgeACL2.UUID, updateACL.UUID, ignoreACL.UUID}
clusterPortGroup.ACLs = []string{purgeACL.UUID, purgeACL2.UUID, updateACL.UUID, ignoreACL.UUID}
dbSetup := libovsdbtest.TestSetup{
NBData: []libovsdbtest.TestData{
purgeACL,
purgeACL2,
ignoreACL,
updateACL,
nodeSwitch,
joinSwitch,
clusterRouter,
clusterPortGroup,
namespace1ASip4,
},
}
startOvn(dbSetup, []v1.Namespace{namespace1}, []egressfirewallapi.EgressFirewall{*egressFirewall}, true)
// All ACLs in the egress firewall priority range will be removed from the switches
joinSwitch.ACLs = []string{ignoreACL.UUID}
nodeSwitch.ACLs = []string{ignoreACL.UUID}
// purgeACL will be deleted as its namespace doesn't exist
clusterPortGroup.ACLs = []string{ignoreACL.UUID, purgeACL2.UUID}
// updateACL will be updated
// Direction of both ACLs will be converted to
updateACL.Direction = nbdb.ACLDirectionToLport
newName := libovsdbutil.GetACLName(updateIDs)
updateACL.Name = &newName
// check severity was reset from default to nil
updateACL.Severity = nil
// match shouldn't have cluster exclusion
pgIDs := getNamespacePortGroupDbIDs(namespace1.Name, DefaultNetworkControllerName)
namespacePG := libovsdbutil.BuildPortGroup(pgIDs, nil, []*nbdb.ACL{updateACL})
namespacePG.UUID = namespacePG.Name + "-UUID"
updateACL.Match = "(ip4.dst == 1.2.3.4/23) && inport == @" + namespacePG.Name
updateACL.Tier = t.DefaultACLTier // ensure the tier of the ACL is updated from 0 to 2
expectedDatabaseState := []libovsdb.TestData{
purgeACL2,
ignoreACL,
updateACL,
nodeSwitch,
joinSwitch,
clusterRouter,
clusterPortGroup,
namespace1ASip4,
namespacePG,
}
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
return nil
}
err := app.Run([]string{app.Name})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
})
ginkgo.It(fmt.Sprintf("reconciles an existing egressFirewall with IPv4 CIDR, gateway mode %s", gwMode), func() {
config.Gateway.Mode = gwMode
app.Action = func(ctx *cli.Context) error {
namespace1 := *newNamespace("namespace1")
egressFirewall := newEgressFirewallObject("default", namespace1.Name, []egressfirewallapi.EgressFirewallRule{
{
Type: "Allow",
To: egressfirewallapi.EgressFirewallDestination{
CIDRSelector: "1.2.3.4/23",
},
},
})
startOvn(dbSetup, []v1.Namespace{namespace1}, []egressfirewallapi.EgressFirewall{*egressFirewall}, true)
_, err := fakeOVN.fakeClient.EgressFirewallClient.K8sV1().EgressFirewalls(egressFirewall.Namespace).
Get(context.TODO(), egressFirewall.Name, metav1.GetOptions{})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
expectedDatabaseState := getEFExpectedDb(initialData, fakeOVN, namespace1.Name,
"(ip4.dst == 1.2.3.4/23)", "", nbdb.ACLActionAllow)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
return nil
}
err := app.Run([]string{app.Name})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
})
ginkgo.It(fmt.Sprintf("reconciles an existing egressFirewall with IPv6 CIDR, gateway mode %s", gwMode), func() {
config.Gateway.Mode = gwMode
app.Action = func(ctx *cli.Context) error {
namespace1 := *newNamespace("namespace1")
egressFirewall := newEgressFirewallObject("default", namespace1.Name, []egressfirewallapi.EgressFirewallRule{
{
Type: "Allow",
To: egressfirewallapi.EgressFirewallDestination{
CIDRSelector: "2002::1234:abcd:ffff:c0a8:101/64",
},
},
})
config.IPv6Mode = true
startOvn(dbSetup, []v1.Namespace{namespace1}, []egressfirewallapi.EgressFirewall{*egressFirewall}, true)
expectedDatabaseState := getEFExpectedDb(initialData, fakeOVN, namespace1.Name,
"(ip6.dst == 2002::1234:abcd:ffff:c0a8:101/64)", "", nbdb.ACLActionAllow)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
return nil
}
err := app.Run([]string{app.Name})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
})
ginkgo.It(fmt.Sprintf("removes stale acl for delete egress firewall, gateway mode %s", gwMode), func() {
config.Gateway.Mode = gwMode
app.Action = func(ctx *cli.Context) error {
fakeController := getFakeController(DefaultNetworkControllerName)
fakeOVN.controller = fakeController
namespace1 := *newNamespace("namespace1")
// no egress firewalls exist
dbSetup := getEFExpectedDb(initialData, fakeOVN, "namespace1", "(ip4.dst == 1.2.3.4/23)",
"", nbdb.ACLActionAllow)
startOvn(libovsdbtest.TestSetup{NBData: dbSetup}, []v1.Namespace{namespace1}, nil, true)
// re-create initial db, since startOvn may add more objects to initialData
initialDatabaseState := getEFExpectedDb(initialData, fakeOVN, "namespace1", "(ip4.dst == 1.2.3.4/23)",
"", nbdb.ACLActionAllow)
expectedDatabaseState := getEFExpectedDbAfterDelete(initialDatabaseState)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
return nil
}
err := app.Run([]string{app.Name})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
})
table.DescribeTable("correctly removes stale acl and DNS address set created", func(gwMode config.GatewayMode, oldDNS bool) {
if !oldDNS {
// enable the dns name resolver flag.
config.OVNKubernetesFeature.EnableDNSNameResolver = true
}
config.Gateway.Mode = gwMode
app.Action = func(ctx *cli.Context) error {
resolvedIP := "1.1.1.1"
namespace1 := *newNamespace("namespace1")
dnsName := util.LowerCaseFQDN("www.example.com")
fakeController := getFakeController(DefaultNetworkControllerName)
fakeOVN.controller = fakeController
// add dns address set along with the acl and pg to the initial db.
addrSet, _ := addressset.GetTestDbAddrSets(
dnsnameresolver.GetEgressFirewallDNSAddrSetDbIDs(dnsName, fakeOVN.controller.controllerName),
[]string{resolvedIP})
addrSetUUID := strings.TrimSuffix(addrSet.UUID, "-UUID")
dbWithACLAndPG := getEFExpectedDb(initialData, fakeOVN, namespace1.Name,
"(ip4.dst == $"+addrSetUUID+")", "", nbdb.ACLActionAllow)
addrSetDbState := append(dbWithACLAndPG, addrSet)
startOvn(libovsdbtest.TestSetup{NBData: addrSetDbState}, []v1.Namespace{namespace1}, nil, oldDNS)
// re-create initial db, since startOvn may add more objects to initialData.
dbWithACLAndPG = getEFExpectedDb(initialData, fakeOVN, namespace1.Name,
"(ip4.dst == $"+addrSetUUID+")", "", nbdb.ACLActionAllow)
expectedDatabaseState := getEFExpectedDbAfterDelete(dbWithACLAndPG)
// check dns address set is cleaned up on initial sync.
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
return nil
}
err := app.Run([]string{app.Name})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
},
table.Entry(fmt.Sprintf("correctly removes stale acl and DNS address set created using old dns resolution, gateway mode %s", gwMode), gwMode, true),
table.Entry(fmt.Sprintf("correctly removes stale acl and DNS address set created using new dns resolution, gateway mode %s", gwMode), gwMode, false),
)
})
ginkgo.Context("during execution", func() {
ginkgo.It(fmt.Sprintf("correctly creates an egressfirewall denying traffic udp traffic on port 100, gateway mode %s", gwMode), func() {
config.Gateway.Mode = gwMode
app.Action = func(ctx *cli.Context) error {
namespace1 := *newNamespace("namespace1")
egressFirewall := newEgressFirewallObject("default", namespace1.Name, []egressfirewallapi.EgressFirewallRule{
{
Type: "Deny",
Ports: []egressfirewallapi.EgressFirewallPort{
{
Protocol: "UDP",
Port: 100,
},
},
To: egressfirewallapi.EgressFirewallDestination{
CIDRSelector: "1.2.3.4/23",
},
},
})
startOvn(dbSetup, []v1.Namespace{namespace1}, []egressfirewallapi.EgressFirewall{*egressFirewall}, true)
_, err := fakeOVN.fakeClient.EgressFirewallClient.K8sV1().EgressFirewalls(egressFirewall.Namespace).Get(context.TODO(), egressFirewall.Name, metav1.GetOptions{})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
expectedDatabaseState := getEFExpectedDb(initialData, fakeOVN, namespace1.Name,
"(ip4.dst == 1.2.3.4/23)", "((udp && ( udp.dst == 100 )))", nbdb.ACLActionDrop)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
return nil
}
err := app.Run([]string{app.Name})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
})
ginkgo.It(fmt.Sprintf("correctly deletes an egressfirewall, gateway mode %s", gwMode), func() {
config.Gateway.Mode = gwMode
app.Action = func(ctx *cli.Context) error {
namespace1 := *newNamespace("namespace1")
egressFirewall := newEgressFirewallObject("default", namespace1.Name, []egressfirewallapi.EgressFirewallRule{
{
Type: "Allow",
Ports: []egressfirewallapi.EgressFirewallPort{
{
Protocol: "TCP",
Port: 100,
},
},
To: egressfirewallapi.EgressFirewallDestination{
CIDRSelector: "1.2.3.5/23",
},
},
})
startOvn(dbSetup, []v1.Namespace{namespace1}, []egressfirewallapi.EgressFirewall{*egressFirewall}, true)
expectedDatabaseState := getEFExpectedDb(initialData, fakeOVN, namespace1.Name,
"(ip4.dst == 1.2.3.5/23)", "((tcp && ( tcp.dst == 100 )))", nbdb.ACLActionAllow)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
err := fakeOVN.fakeClient.EgressFirewallClient.K8sV1().EgressFirewalls(egressFirewall.Namespace).Delete(context.TODO(), egressFirewall.Name, *metav1.NewDeleteOptions(0))
gomega.Expect(err).NotTo(gomega.HaveOccurred())
expectedDatabaseState = getEFExpectedDbAfterDelete(expectedDatabaseState)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
return nil
}
err := app.Run([]string{app.Name})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
})
ginkgo.It(fmt.Sprintf("correctly updates an egressfirewall, gateway mode %s", gwMode), func() {
config.Gateway.Mode = gwMode
app.Action = func(ctx *cli.Context) error {
namespace1 := *newNamespace("namespace1")
egressFirewall := newEgressFirewallObject("default", namespace1.Name, []egressfirewallapi.EgressFirewallRule{
{
Type: "Allow",
To: egressfirewallapi.EgressFirewallDestination{
CIDRSelector: "1.2.3.4/23",
},
},
})
egressFirewall1 := newEgressFirewallObject("default", namespace1.Name, []egressfirewallapi.EgressFirewallRule{
{
Type: "Deny",
To: egressfirewallapi.EgressFirewallDestination{
CIDRSelector: "1.2.3.4/23",
},
},
})
startOvn(dbSetup, []v1.Namespace{namespace1}, []egressfirewallapi.EgressFirewall{*egressFirewall}, true)
expectedDatabaseState := getEFExpectedDb(initialData, fakeOVN, namespace1.Name,
"(ip4.dst == 1.2.3.4/23)", "", nbdb.ACLActionAllow)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
_, err := fakeOVN.fakeClient.EgressFirewallClient.K8sV1().EgressFirewalls(egressFirewall.Namespace).Get(context.TODO(), egressFirewall.Name, metav1.GetOptions{})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
_, err = fakeOVN.fakeClient.EgressFirewallClient.K8sV1().EgressFirewalls(egressFirewall1.Namespace).Update(context.TODO(), egressFirewall1, metav1.UpdateOptions{})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
expectedDatabaseState = getEFExpectedDb(initialData, fakeOVN, namespace1.Name,
"(ip4.dst == 1.2.3.4/23)", "", nbdb.ACLActionDrop)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
return nil
}
err := app.Run([]string{app.Name})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
})
ginkgo.It(fmt.Sprintf("egress firewall with node selector updates during node update, gateway mode %s", gwMode), func() {
config.Gateway.Mode = gwMode
var err error
nodeName := "node1"
nodeIP := "9.9.9.9"
nodeIP2 := "11.11.11.11"
nodeIP3 := "fc00:f853:ccd:e793::2"
config.IPv4Mode = true
config.IPv6Mode = true
app.Action = func(ctx *cli.Context) error {
namespace1 := *newNamespace("namespace1")
labelKey := "name"
labelValue := "test"
selector := metav1.LabelSelector{MatchLabels: map[string]string{labelKey: labelValue}}
egressFirewall := newEgressFirewallObject("default", namespace1.Name, []egressfirewallapi.EgressFirewallRule{
{
Type: "Allow",
To: egressfirewallapi.EgressFirewallDestination{
NodeSelector: &selector,
},
},
})
startOvnWithNodes(dbSetup, []v1.Namespace{namespace1}, []egressfirewallapi.EgressFirewall{*egressFirewall},
[]v1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: nodeName,
Annotations: map[string]string{
util.OVNNodeHostCIDRs: fmt.Sprintf("[\"%s/24\",\"%s/24\",\"%s/64\"]", nodeIP, nodeIP2, nodeIP3),
},
},
},
}, true)
// update the node to match the selector
patch := struct {
Metadata map[string]interface{} `json:"metadata"`
}{
Metadata: map[string]interface{}{
"labels": map[string]string{labelKey: labelValue},
},
}
ginkgo.By("Updating a node to match nodeSelector on Egress Firewall")
patchData, err := json.Marshal(&patch)
gomega.Expect(err).NotTo(gomega.HaveOccurred())
// trigger update event
_, err = fakeOVN.fakeClient.KubeClient.CoreV1().Nodes().Patch(context.TODO(), nodeName,
types.MergePatchType, patchData, metav1.PatchOptions{})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
expectedDatabaseState := getEFExpectedDb(initialData,
fakeOVN, namespace1.Name,
fmt.Sprintf("(ip4.dst == %s || ip4.dst == %s || ip6.dst == %s)", nodeIP2, nodeIP, nodeIP3), "", nbdb.ACLActionAllow)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
ginkgo.By("Updating a node to not match nodeSelector on Egress Firewall")
patch.Metadata = map[string]interface{}{"labels": map[string]string{labelKey: libovsdbutil.UnspecifiedL4Match}}
patchData, err = json.Marshal(&patch)
gomega.Expect(err).NotTo(gomega.HaveOccurred())
// trigger update event
_, err = fakeOVN.fakeClient.KubeClient.CoreV1().Nodes().Patch(context.TODO(), nodeName,
types.MergePatchType, patchData, metav1.PatchOptions{})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
expectedDatabaseState = getEFExpectedDbAfterDelete(expectedDatabaseState)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
return nil
}
err = app.Run([]string{app.Name})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
})
ginkgo.It(fmt.Sprintf("correctly retries deleting an egressfirewall, gateway mode %s", gwMode), func() {
config.Gateway.Mode = gwMode
app.Action = func(ctx *cli.Context) error {
namespace1 := *newNamespace("namespace1")
egressFirewall := newEgressFirewallObject("default", namespace1.Name, []egressfirewallapi.EgressFirewallRule{
{
Type: "Allow",
Ports: []egressfirewallapi.EgressFirewallPort{
{
Protocol: "TCP",
Port: 100,
},
},
To: egressfirewallapi.EgressFirewallDestination{
CIDRSelector: "1.2.3.5/23",
},
},
})
startOvnWithNodes(dbSetup, []v1.Namespace{namespace1}, []egressfirewallapi.EgressFirewall{*egressFirewall},
[]v1.Node{
{
Status: v1.NodeStatus{
Phase: v1.NodeRunning,
},
ObjectMeta: newObjectMeta(node1Name, ""),
},
{
Status: v1.NodeStatus{
Phase: v1.NodeRunning,
},
ObjectMeta: newObjectMeta(node2Name, ""),
},
}, true)
expectedDatabaseState := getEFExpectedDb(initialData, fakeOVN, namespace1.Name,
"(ip4.dst == 1.2.3.5/23)", "((tcp && ( tcp.dst == 100 )))", nbdb.ACLActionAllow)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
ginkgo.By("Bringing down NBDB")
// inject transient problem, nbdb is down
fakeOVN.controller.nbClient.Close()
gomega.Eventually(func() bool {
return fakeOVN.controller.nbClient.Connected()
}).Should(gomega.BeFalse())
err := fakeOVN.fakeClient.EgressFirewallClient.K8sV1().EgressFirewalls(egressFirewall.Namespace).Delete(context.TODO(), egressFirewall.Name, *metav1.NewDeleteOptions(0))
gomega.Expect(err).NotTo(gomega.HaveOccurred())
// sleep long enough for TransactWithRetry to fail, causing egress firewall Add to fail
time.Sleep(t.OVSDBTimeout + time.Second)
// check to see if the retry cache has an entry for this egress firewall
key := getEgressFirewallNamespacedName(egressFirewall)
ginkgo.By("retry entry: old obj should not be nil, new obj should be nil")
retry.CheckRetryObjectMultipleFieldsEventually(
key,
fakeOVN.controller.retryEgressFirewalls,
gomega.Not(gomega.BeNil()), // oldObj should not be nil
gomega.BeNil(), // newObj should be nil
)
connCtx, cancel := context.WithTimeout(context.Background(), t.OVSDBTimeout)
defer cancel()
resetNBClient(connCtx, fakeOVN.controller.nbClient)
retry.SetRetryObjWithNoBackoff(key, fakeOVN.controller.retryEgressFirewalls)
fakeOVN.controller.retryEgressFirewalls.RequestRetryObjs()
expectedDatabaseState = getEFExpectedDbAfterDelete(expectedDatabaseState)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
// check the cache no longer has the entry
retry.CheckRetryObjectEventually(key, false, fakeOVN.controller.retryEgressFirewalls)
return nil
}
err := app.Run([]string{app.Name})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
})
ginkgo.It(fmt.Sprintf("correctly retries adding and updating an egressfirewall, gateway mode %s", gwMode), func() {
config.Gateway.Mode = gwMode
app.Action = func(ctx *cli.Context) error {
namespace1 := *newNamespace("namespace1")
egressFirewall := newEgressFirewallObject("default", namespace1.Name, []egressfirewallapi.EgressFirewallRule{
{
Type: "Allow",
To: egressfirewallapi.EgressFirewallDestination{
CIDRSelector: "1.2.3.4/23",
},
},
})
egressFirewall1 := newEgressFirewallObject("default", namespace1.Name, []egressfirewallapi.EgressFirewallRule{
{
Type: "Deny",
To: egressfirewallapi.EgressFirewallDestination{
CIDRSelector: "1.2.3.4/23",
},
},
})
startOvn(dbSetup, []v1.Namespace{namespace1}, []egressfirewallapi.EgressFirewall{*egressFirewall}, true)
expectedDatabaseState := getEFExpectedDb(initialData, fakeOVN, namespace1.Name,
"(ip4.dst == 1.2.3.4/23)", "", nbdb.ACLActionAllow)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
ginkgo.By("Bringing down NBDB")
// inject transient problem, nbdb is down
fakeOVN.controller.nbClient.Close()
gomega.Eventually(func() bool {
return fakeOVN.controller.nbClient.Connected()
}).Should(gomega.BeFalse())
_, err := fakeOVN.fakeClient.EgressFirewallClient.K8sV1().EgressFirewalls(egressFirewall.Namespace).Get(context.TODO(), egressFirewall.Name, metav1.GetOptions{})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
_, err = fakeOVN.fakeClient.EgressFirewallClient.K8sV1().EgressFirewalls(egressFirewall1.Namespace).Update(context.TODO(), egressFirewall1, metav1.UpdateOptions{})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
// sleep long enough for TransactWithRetry to fail, causing egress firewall Add to fail
time.Sleep(t.OVSDBTimeout + time.Second)
// check to see if the retry cache has an entry for this egress firewall
key, err := retry.GetResourceKey(egressFirewall)
gomega.Expect(err).NotTo(gomega.HaveOccurred())
ginkgo.By("retry entry: old obj should not be nil, new obj should not be nil")
retry.CheckRetryObjectMultipleFieldsEventually(
key,
fakeOVN.controller.retryEgressFirewalls,
gomega.Not(gomega.BeNil()), // oldObj should not be nil
gomega.Not(gomega.BeNil()), // newObj should not be nil
)
connCtx, cancel := context.WithTimeout(context.Background(), t.OVSDBTimeout)
defer cancel()
ginkgo.By("bringing up NBDB and requesting retry of entry")
resetNBClient(connCtx, fakeOVN.controller.nbClient)
retry.SetRetryObjWithNoBackoff(key, fakeOVN.controller.retryEgressFirewalls)
ginkgo.By("request immediate retry object")
fakeOVN.controller.retryEgressFirewalls.RequestRetryObjs()
// check the cache no longer has the entry
retry.CheckRetryObjectEventually(key, false, fakeOVN.controller.retryEgressFirewalls)
expectedDatabaseState = getEFExpectedDb(initialData, fakeOVN, namespace1.Name,
"(ip4.dst == 1.2.3.4/23)", "", nbdb.ACLActionDrop)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
return nil
}
err := app.Run([]string{app.Name})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
})
ginkgo.It(fmt.Sprintf("correctly updates an egressfirewall's ACL logging, gateway mode %s", gwMode), func() {
config.Gateway.Mode = gwMode
app.Action = func(ctx *cli.Context) error {
namespace1 := *newNamespace("namespace1")
egressFirewall := newEgressFirewallObject("default", namespace1.Name, []egressfirewallapi.EgressFirewallRule{
{
Type: "Allow",
To: egressfirewallapi.EgressFirewallDestination{
CIDRSelector: "1.2.3.4/23",
},
},
})
startOvn(dbSetup, []v1.Namespace{namespace1}, []egressfirewallapi.EgressFirewall{*egressFirewall}, true)
expectedDatabaseState := getEFExpectedDb(initialData, fakeOVN, namespace1.Name,
"(ip4.dst == 1.2.3.4/23)", "", nbdb.ACLActionAllow)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
// get the current namespace
namespace, err := fakeOVN.fakeClient.KubeClient.CoreV1().Namespaces().Get(context.TODO(), namespace1.Name, metav1.GetOptions{})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
// enable ACL logging with severity alert, alert
logSeverity := "alert"
updatedLogSeverity := fmt.Sprintf(`{ "deny": "%s", "allow": "%s" }`, logSeverity, logSeverity)
namespace.Annotations[util.AclLoggingAnnotation] = updatedLogSeverity
_, err = fakeOVN.fakeClient.KubeClient.CoreV1().Namespaces().Update(context.TODO(), namespace, metav1.UpdateOptions{})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
// eventually, we should see the changes in the namespace reflected in the database
acl := expectedDatabaseState[len(expectedDatabaseState)-2].(*nbdb.ACL)
acl.Log = true
acl.Severity = &logSeverity
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
return nil
}
err := app.Run([]string{app.Name})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
})
for _, ipMode := range []string{"IPv4", "IPv6"} {
ginkgo.It(fmt.Sprintf("configures egress firewall correctly with node selector, gateway mode: %s, IP mode: %s", gwMode, ipMode), func() {
nodeIP4CIDR := "10.10.10.1/24"
nodeIP, _, _ := net.ParseCIDR(nodeIP4CIDR)
nodeIP6CIDR := "fc00:f853:ccd:e793::2/64"
nodeIP6, _, _ := net.ParseCIDR(nodeIP6CIDR)
config.Gateway.Mode = gwMode
var nodeCIDR string
if ipMode == "IPv4" {
config.IPv4Mode = true
config.IPv6Mode = false
nodeCIDR = nodeIP4CIDR
} else {
config.IPv4Mode = false
config.IPv6Mode = true
nodeCIDR = nodeIP6CIDR
}
app.Action = func(ctx *cli.Context) error {
labelKey := "name"
labelValue := "test"
selector := metav1.LabelSelector{MatchLabels: map[string]string{labelKey: labelValue}}
namespace1 := *newNamespace("namespace1")
egressFirewall := newEgressFirewallObject("default", namespace1.Name, []egressfirewallapi.EgressFirewallRule{
{
Type: "Allow",
To: egressfirewallapi.EgressFirewallDestination{
NodeSelector: &selector,
},
},
})
mdata := newObjectMeta(node1Name, "")
mdata.Labels = map[string]string{labelKey: labelValue}
mdata.Annotations = map[string]string{util.OVNNodeHostCIDRs: fmt.Sprintf("[\"%s\"]", nodeCIDR)}
startOvnWithNodes(dbSetup, []v1.Namespace{namespace1}, []egressfirewallapi.EgressFirewall{*egressFirewall},
[]v1.Node{
{
ObjectMeta: mdata,
},
}, true)
var match string
if config.IPv4Mode {
match = fmt.Sprintf("(ip4.dst == %s)", nodeIP)
} else {
match = fmt.Sprintf("(ip6.dst == %s)", nodeIP6)
}
expectedDatabaseState := getEFExpectedDb(initialData, fakeOVN, namespace1.Name,
match, "", nbdb.ACLActionAllow)
gomega.Eventually(fakeOVN.nbClient).Should(libovsdbtest.HaveData(expectedDatabaseState))
return nil
}
err := app.Run([]string{app.Name})
gomega.Expect(err).NotTo(gomega.HaveOccurred())
})
}
ginkgo.It(fmt.Sprintf("correctly creates an egressfirewall with subnet exclusion, gateway mode %s", gwMode), func() {
config.Gateway.Mode = gwMode
app.Action = func(ctx *cli.Context) error {
clusterSubnetStr := "10.128.0.0/14"
_, clusterSubnet, _ := net.ParseCIDR(clusterSubnetStr)
config.Default.ClusterSubnets = []config.CIDRNetworkEntry{{CIDR: clusterSubnet}}
namespace1 := *newNamespace("namespace1")
egressFirewall := newEgressFirewallObject("default", namespace1.Name, []egressfirewallapi.EgressFirewallRule{