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underlay.go
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underlay.go
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package underlay
import (
"fmt"
"net"
"os/exec"
"strconv"
"strings"
"time"
dockertypes "github.com/docker/docker/api/types"
"github.com/onsi/ginkgo/v2"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
clientset "k8s.io/client-go/kubernetes"
e2enode "k8s.io/kubernetes/test/e2e/framework/node"
apiv1 "github.com/kubeovn/kube-ovn/pkg/apis/kubeovn/v1"
"github.com/kubeovn/kube-ovn/pkg/util"
"github.com/kubeovn/kube-ovn/test/e2e/framework"
"github.com/kubeovn/kube-ovn/test/e2e/framework/docker"
"github.com/kubeovn/kube-ovn/test/e2e/framework/iproute"
"github.com/kubeovn/kube-ovn/test/e2e/framework/kind"
)
const dockerNetworkName = "kube-ovn-vlan"
const curlListenPort = 8081
func makeProviderNetwork(providerNetworkName string, exchangeLinkName bool, linkMap map[string]*iproute.Link) *apiv1.ProviderNetwork {
var defaultInterface string
customInterfaces := make(map[string][]string, 0)
for node, link := range linkMap {
if !strings.ContainsRune(node, '-') {
continue
}
if defaultInterface == "" {
defaultInterface = link.IfName
} else if link.IfName != defaultInterface {
customInterfaces[link.IfName] = append(customInterfaces[link.IfName], node)
}
}
return framework.MakeProviderNetwork(providerNetworkName, exchangeLinkName, defaultInterface, customInterfaces, nil)
}
var _ = framework.SerialDescribe("[group:underlay]", func() {
f := framework.NewDefaultFramework("underlay")
var skip bool
var itFn func(bool)
var cs clientset.Interface
var nodeNames []string
var clusterName, providerNetworkName, vlanName, subnetName, podName, namespaceName, u2oPodNameUnderlay, u2oOverlaySubnetName, u2oPodNameOverlay string
var linkMap map[string]*iproute.Link
var routeMap map[string][]iproute.Route
var eventClient *framework.EventClient
var podClient *framework.PodClient
var subnetClient *framework.SubnetClient
var vlanClient *framework.VlanClient
var providerNetworkClient *framework.ProviderNetworkClient
var dockerNetwork *dockertypes.NetworkResource
var containerID string
var image string
ginkgo.BeforeEach(func() {
cs = f.ClientSet
eventClient = f.EventClient()
podClient = f.PodClient()
subnetClient = f.SubnetClient()
vlanClient = f.VlanClient()
providerNetworkClient = f.ProviderNetworkClient()
namespaceName = f.Namespace.Name
podName = "pod-" + framework.RandomSuffix()
subnetName = "subnet-" + framework.RandomSuffix()
vlanName = "vlan-" + framework.RandomSuffix()
providerNetworkName = "pn-" + framework.RandomSuffix()
containerID = ""
if image == "" {
image = framework.GetKubeOvnImage(cs)
}
u2oPodNameUnderlay = ""
u2oOverlaySubnetName = ""
u2oPodNameOverlay = ""
if skip {
ginkgo.Skip("underlay spec only runs on kind clusters")
}
if clusterName == "" {
ginkgo.By("Getting k8s nodes")
k8sNodes, err := e2enode.GetReadySchedulableNodes(cs)
framework.ExpectNoError(err)
cluster, ok := kind.IsKindProvided(k8sNodes.Items[0].Spec.ProviderID)
if !ok {
skip = true
ginkgo.Skip("underlay spec only runs on kind clusters")
}
clusterName = cluster
}
if dockerNetwork == nil {
ginkgo.By("Ensuring docker network " + dockerNetworkName + " exists")
network, err := docker.NetworkCreate(dockerNetworkName, true, true)
framework.ExpectNoError(err, "creating docker network "+dockerNetworkName)
dockerNetwork = network
}
ginkgo.By("Getting kind nodes")
nodes, err := kind.ListNodes(clusterName, "")
framework.ExpectNoError(err, "getting nodes in kind cluster")
framework.ExpectNotEmpty(nodes)
ginkgo.By("Connecting nodes to the docker network")
err = kind.NetworkConnect(dockerNetwork.ID, nodes)
framework.ExpectNoError(err, "connecting nodes to network "+dockerNetworkName)
ginkgo.By("Getting node links that belong to the docker network")
nodes, err = kind.ListNodes(clusterName, "")
framework.ExpectNoError(err, "getting nodes in kind cluster")
linkMap = make(map[string]*iproute.Link, len(nodes))
routeMap = make(map[string][]iproute.Route, len(nodes))
nodeNames = make([]string, 0, len(nodes))
for _, node := range nodes {
links, err := node.ListLinks()
framework.ExpectNoError(err, "failed to list links on node %s: %v", node.Name(), err)
routes, err := node.ListRoutes(true)
framework.ExpectNoError(err, "failed to list routes on node %s: %v", node.Name(), err)
for _, link := range links {
if link.Address == node.NetworkSettings.Networks[dockerNetworkName].MacAddress {
linkMap[node.ID] = &link
break
}
}
framework.ExpectHaveKey(linkMap, node.ID)
link := linkMap[node.ID]
for _, route := range routes {
if route.Dev == link.IfName {
r := iproute.Route{
Dst: route.Dst,
Gateway: route.Gateway,
Dev: route.Dev,
Flags: route.Flags,
}
routeMap[node.ID] = append(routeMap[node.ID], r)
}
}
framework.ExpectHaveKey(linkMap, node.ID)
linkMap[node.Name()] = linkMap[node.ID]
routeMap[node.Name()] = routeMap[node.ID]
nodeNames = append(nodeNames, node.Name())
}
itFn = func(exchangeLinkName bool) {
ginkgo.By("Creating provider network")
pn := makeProviderNetwork(providerNetworkName, exchangeLinkName, linkMap)
pn = providerNetworkClient.CreateSync(pn)
ginkgo.By("Getting k8s nodes")
k8sNodes, err := e2enode.GetReadySchedulableNodes(cs)
framework.ExpectNoError(err)
ginkgo.By("Validating node labels")
for _, node := range k8sNodes.Items {
link := linkMap[node.Name]
framework.ExpectHaveKeyWithValue(node.Labels, fmt.Sprintf(util.ProviderNetworkInterfaceTemplate, providerNetworkName), link.IfName)
framework.ExpectHaveKeyWithValue(node.Labels, fmt.Sprintf(util.ProviderNetworkReadyTemplate, providerNetworkName), "true")
framework.ExpectHaveKeyWithValue(node.Labels, fmt.Sprintf(util.ProviderNetworkMtuTemplate, providerNetworkName), strconv.Itoa(link.Mtu))
framework.ExpectNotHaveKey(node.Labels, fmt.Sprintf(util.ProviderNetworkExcludeTemplate, providerNetworkName))
}
ginkgo.By("Validating provider network status")
framework.ExpectEqual(pn.Status.Ready, true, "field .status.ready should be true")
framework.ExpectConsistOf(pn.Status.ReadyNodes, nodeNames)
framework.ExpectEmpty(pn.Status.Vlans)
ginkgo.By("Getting kind nodes")
kindNodes, err := kind.ListNodes(clusterName, "")
framework.ExpectNoError(err)
ginkgo.By("Validating node links")
linkNameMap := make(map[string]string, len(kindNodes))
bridgeName := util.ExternalBridgeName(providerNetworkName)
for _, node := range kindNodes {
if exchangeLinkName {
bridgeName = linkMap[node.ID].IfName
}
links, err := node.ListLinks()
framework.ExpectNoError(err, "failed to list links on node %s: %v", node.Name(), err)
var port, bridge *iproute.Link
for i, link := range links {
if link.IfIndex == linkMap[node.ID].IfIndex {
port = &links[i]
} else if link.IfName == bridgeName {
bridge = &links[i]
}
if port != nil && bridge != nil {
break
}
}
framework.ExpectNotNil(port)
framework.ExpectEqual(port.Address, linkMap[node.ID].Address)
framework.ExpectEqual(port.Mtu, linkMap[node.ID].Mtu)
framework.ExpectEqual(port.Master, "ovs-system")
framework.ExpectEqual(port.OperState, "UP")
if exchangeLinkName {
framework.ExpectEqual(port.IfName, util.ExternalBridgeName(providerNetworkName))
}
framework.ExpectNotNil(bridge)
framework.ExpectEqual(bridge.LinkInfo.InfoKind, "openvswitch")
framework.ExpectEqual(bridge.Address, port.Address)
framework.ExpectEqual(bridge.Mtu, port.Mtu)
framework.ExpectEqual(bridge.OperState, "UNKNOWN")
framework.ExpectContainElement(bridge.Flags, "UP")
framework.ExpectEmpty(port.NonLinkLocalAddresses())
framework.ExpectConsistOf(bridge.NonLinkLocalAddresses(), linkMap[node.ID].NonLinkLocalAddresses())
linkNameMap[node.ID] = port.IfName
}
ginkgo.By("Validating node routes")
for _, node := range kindNodes {
if exchangeLinkName {
bridgeName = linkMap[node.ID].IfName
}
routes, err := node.ListRoutes(true)
framework.ExpectNoError(err, "failed to list routes on node %s: %v", node.Name(), err)
var portRoutes, bridgeRoutes []iproute.Route
for _, route := range routes {
r := iproute.Route{
Dst: route.Dst,
Gateway: route.Gateway,
Dev: route.Dev,
Flags: route.Flags,
}
if route.Dev == linkNameMap[node.ID] {
portRoutes = append(portRoutes, r)
} else if route.Dev == bridgeName {
r.Dev = linkMap[node.ID].IfName
bridgeRoutes = append(bridgeRoutes, r)
}
}
framework.ExpectEmpty(portRoutes, "no routes should exists on provider link")
framework.ExpectConsistOf(bridgeRoutes, routeMap[node.ID])
}
}
})
ginkgo.AfterEach(func() {
if containerID != "" {
ginkgo.By("Deleting container " + containerID)
err := docker.ContainerRemove(containerID)
framework.ExpectNoError(err)
}
ginkgo.By("Deleting pod " + podName)
podClient.DeleteSync(podName)
if u2oPodNameUnderlay != "" {
ginkgo.By("Deleting underlay pod " + u2oPodNameUnderlay)
podClient.DeleteSync(u2oPodNameUnderlay)
ginkgo.By("Deleting overlay pod " + u2oPodNameOverlay)
podClient.DeleteSync(u2oPodNameOverlay)
ginkgo.By("Deleting subnet " + u2oOverlaySubnetName)
subnetClient.DeleteSync(u2oOverlaySubnetName)
}
ginkgo.By("Deleting subnet " + subnetName)
subnetClient.DeleteSync(subnetName)
ginkgo.By("Deleting vlan " + vlanName)
vlanClient.Delete(vlanName, metav1.DeleteOptions{})
ginkgo.By("Deleting provider network")
providerNetworkClient.DeleteSync(providerNetworkName)
ginkgo.By("Getting nodes")
nodes, err := kind.ListNodes(clusterName, "")
framework.ExpectNoError(err, "getting nodes in cluster")
ginkgo.By("Waiting for ovs bridge to disappear")
deadline := time.Now().Add(time.Minute)
for _, node := range nodes {
err = node.WaitLinkToDisappear(util.ExternalBridgeName(providerNetworkName), 2*time.Second, deadline)
framework.ExpectNoError(err, "timed out waiting for ovs bridge to disappear in node %s", node.Name())
}
if dockerNetwork != nil {
ginkgo.By("Disconnecting nodes from the docker network")
err = kind.NetworkDisconnect(dockerNetwork.ID, nodes)
framework.ExpectNoError(err, "disconnecting nodes from network "+dockerNetworkName)
}
})
framework.ConformanceIt(`should be able to create provider network`, func() {
itFn(false)
})
framework.ConformanceIt(`should exchange link names`, func() {
f.SkipVersionPriorTo(1, 9, "Support for exchanging link names was introduced in v1.9")
itFn(true)
})
framework.ConformanceIt("should keep pod mtu the same with node interface", func() {
ginkgo.By("Creating provider network")
pn := makeProviderNetwork(providerNetworkName, false, linkMap)
_ = providerNetworkClient.CreateSync(pn)
ginkgo.By("Getting docker network " + dockerNetworkName)
network, err := docker.NetworkInspect(dockerNetworkName)
framework.ExpectNoError(err, "getting docker network "+dockerNetworkName)
ginkgo.By("Creating vlan " + vlanName)
vlan := framework.MakeVlan(vlanName, providerNetworkName, 0)
_ = vlanClient.Create(vlan)
ginkgo.By("Creating subnet " + subnetName)
cidr := make([]string, 0, 2)
gateway := make([]string, 0, 2)
for _, config := range dockerNetwork.IPAM.Config {
switch util.CheckProtocol(config.Subnet) {
case apiv1.ProtocolIPv4:
if f.ClusterIpFamily != "ipv6" {
cidr = append(cidr, config.Subnet)
gateway = append(gateway, config.Gateway)
}
case apiv1.ProtocolIPv6:
if f.ClusterIpFamily != "ipv4" {
cidr = append(cidr, config.Subnet)
gateway = append(gateway, config.Gateway)
}
}
}
excludeIPs := make([]string, 0, len(network.Containers)*2)
for _, container := range network.Containers {
if container.IPv4Address != "" && f.ClusterIpFamily != "ipv6" {
excludeIPs = append(excludeIPs, strings.Split(container.IPv4Address, "/")[0])
}
if container.IPv6Address != "" && f.ClusterIpFamily != "ipv4" {
excludeIPs = append(excludeIPs, strings.Split(container.IPv6Address, "/")[0])
}
}
subnet := framework.MakeSubnet(subnetName, vlanName, strings.Join(cidr, ","), strings.Join(gateway, ","), excludeIPs, nil, []string{namespaceName})
_ = subnetClient.CreateSync(subnet)
ginkgo.By("Creating pod " + podName)
cmd := []string{"sh", "-c", "sleep 600"}
pod := framework.MakePod(namespaceName, podName, nil, nil, image, cmd, nil)
_ = podClient.CreateSync(pod)
ginkgo.By("Validating pod MTU")
links, err := iproute.AddressShow("eth0", func(cmd ...string) ([]byte, []byte, error) {
return framework.KubectlExec(namespaceName, podName, cmd...)
})
framework.ExpectNoError(err)
framework.ExpectHaveLen(links, 1, "should get eth0 information")
framework.ExpectEqual(links[0].Mtu, docker.MTU)
})
framework.ConformanceIt("should be able to detect IPv4 address conflict", func() {
if f.ClusterIpFamily != "ipv4" {
ginkgo.Skip("Address conflict detection only supports IPv4")
}
f.SkipVersionPriorTo(1, 9, "Address conflict detection was introduced in v1.9")
ginkgo.By("Creating provider network")
pn := makeProviderNetwork(providerNetworkName, false, linkMap)
_ = providerNetworkClient.CreateSync(pn)
ginkgo.By("Getting docker network " + dockerNetworkName)
network, err := docker.NetworkInspect(dockerNetworkName)
framework.ExpectNoError(err, "getting docker network "+dockerNetworkName)
containerName := "container-" + framework.RandomSuffix()
ginkgo.By("Creating container " + containerName)
cmd := []string{"sh", "-c", "sleep 600"}
containerInfo, err := docker.ContainerCreate(containerName, image, dockerNetworkName, cmd)
framework.ExpectNoError(err)
ginkgo.By("Creating vlan " + vlanName)
vlan := framework.MakeVlan(vlanName, providerNetworkName, 0)
_ = vlanClient.Create(vlan)
ginkgo.By("Creating subnet " + subnetName)
cidr := make([]string, 0, 2)
gateway := make([]string, 0, 2)
for _, config := range dockerNetwork.IPAM.Config {
if util.CheckProtocol(config.Subnet) == apiv1.ProtocolIPv4 {
cidr = append(cidr, config.Subnet)
gateway = append(gateway, config.Gateway)
break
}
}
excludeIPs := make([]string, 0, len(network.Containers)*2)
for _, container := range network.Containers {
if container.IPv4Address != "" {
excludeIPs = append(excludeIPs, strings.Split(container.IPv4Address, "/")[0])
}
}
subnet := framework.MakeSubnet(subnetName, vlanName, strings.Join(cidr, ","), strings.Join(gateway, ","), excludeIPs, nil, []string{namespaceName})
_ = subnetClient.CreateSync(subnet)
ip := containerInfo.NetworkSettings.Networks[dockerNetworkName].IPAddress
mac := containerInfo.NetworkSettings.Networks[dockerNetworkName].MacAddress
ginkgo.By("Creating pod " + podName + " with IP address " + ip)
annotations := map[string]string{util.IpAddressAnnotation: ip}
pod := framework.MakePod(namespaceName, podName, nil, annotations, image, cmd, nil)
_ = podClient.Create(pod)
ginkgo.By("Waiting for pod events")
events := eventClient.WaitToHaveEvent("Pod", podName, "Warning", "FailedCreatePodSandBox", "kubelet", "")
message := fmt.Sprintf("IP address %s has already been used by host with MAC %s", ip, mac)
var found bool
for _, event := range events {
if strings.Contains(event.Message, message) {
found = true
framework.Logf("Found pod event: %s", event.Message)
break
}
}
framework.ExpectTrue(found, "Address conflict should be reported in pod events")
})
framework.ConformanceIt("should support underlay to overlay subnet interconnection ", func() {
f.SkipVersionPriorTo(1, 9, "This feature was introduce in v1.9")
ginkgo.By("Creating provider network")
pn := makeProviderNetwork(providerNetworkName, false, linkMap)
_ = providerNetworkClient.CreateSync(pn)
ginkgo.By("Getting docker network " + dockerNetworkName)
network, err := docker.NetworkInspect(dockerNetworkName)
framework.ExpectNoError(err, "getting docker network "+dockerNetworkName)
ginkgo.By("Creating vlan " + vlanName)
vlan := framework.MakeVlan(vlanName, providerNetworkName, 0)
_ = vlanClient.Create(vlan)
ginkgo.By("Creating underlay subnet " + subnetName)
underlayCidr := make([]string, 0, 2)
gateway := make([]string, 0, 2)
for _, config := range dockerNetwork.IPAM.Config {
switch util.CheckProtocol(config.Subnet) {
case apiv1.ProtocolIPv4:
if f.ClusterIpFamily != "ipv6" {
underlayCidr = append(underlayCidr, config.Subnet)
gateway = append(gateway, config.Gateway)
}
case apiv1.ProtocolIPv6:
if f.ClusterIpFamily != "ipv4" {
underlayCidr = append(underlayCidr, config.Subnet)
gateway = append(gateway, config.Gateway)
}
}
}
excludeIPs := make([]string, 0, len(network.Containers)*2)
for _, container := range network.Containers {
if container.IPv4Address != "" && f.ClusterIpFamily != "ipv6" {
excludeIPs = append(excludeIPs, strings.Split(container.IPv4Address, "/")[0])
}
if container.IPv6Address != "" && f.ClusterIpFamily != "ipv4" {
excludeIPs = append(excludeIPs, strings.Split(container.IPv6Address, "/")[0])
}
}
subnet := framework.MakeSubnet(subnetName, vlanName, strings.Join(underlayCidr, ","), strings.Join(gateway, ","), excludeIPs, nil, []string{namespaceName})
subnet.Spec.U2OInterconnection = true
_ = subnetClient.CreateSync(subnet)
ginkgo.By("Creating underlay subnet pod")
annotations := map[string]string{
util.LogicalSwitchAnnotation: subnetName,
}
time.Sleep(5 * time.Second)
u2oPodNameUnderlay = "pod-" + framework.RandomSuffix()
args := []string{"netexec", "--http-port", strconv.Itoa(curlListenPort)}
underlayPod := framework.MakePod(namespaceName, u2oPodNameUnderlay, nil, annotations, framework.AgnhostImage, nil, args)
underlayPod.Spec.Containers[0].ImagePullPolicy = corev1.PullIfNotPresent
originUnderlayPod := underlayPod.DeepCopy()
underlayPod = podClient.CreateSync(underlayPod)
// get subnet again because ipam change
subnet = subnetClient.Get(subnetName)
ginkgo.By("Creating overlay subnet")
u2oOverlaySubnetName = "subnet-" + framework.RandomSuffix()
cidr := framework.RandomCIDR(f.ClusterIpFamily)
overlaySubnet := framework.MakeSubnet(u2oOverlaySubnetName, "", cidr, "", nil, nil, nil)
overlaySubnet = subnetClient.CreateSync(overlaySubnet)
ginkgo.By("Creating overlay subnet pod")
u2oPodNameOverlay = "pod-" + framework.RandomSuffix()
overlayAnnotations := map[string]string{
util.LogicalSwitchAnnotation: overlaySubnet.Name,
}
args = []string{"netexec", "--http-port", strconv.Itoa(curlListenPort)}
overlayPod := framework.MakePod(namespaceName, u2oPodNameOverlay, nil, overlayAnnotations, framework.AgnhostImage, nil, args)
overlayPod.Spec.Containers[0].ImagePullPolicy = corev1.PullIfNotPresent
overlayPod = podClient.CreateSync(overlayPod)
ginkgo.By("step1: Enable u2o check")
checkU2OItems(true, subnet, underlayPod, overlayPod)
ginkgo.By("step2: Disable u2o check")
podClient.DeleteSync(u2oPodNameUnderlay)
subnet = subnetClient.Get(subnetName)
modifiedSubnet := subnet.DeepCopy()
modifiedSubnet.Spec.U2OInterconnection = false
subnetClient.PatchSync(subnet, modifiedSubnet)
time.Sleep(5 * time.Second)
underlayPod = podClient.CreateSync(originUnderlayPod)
subnet = subnetClient.Get(subnetName)
checkU2OItems(false, subnet, underlayPod, overlayPod)
ginkgo.By("step3: recover enable u2o check")
podClient.DeleteSync(u2oPodNameUnderlay)
subnet = subnetClient.Get(subnetName)
modifiedSubnet = subnet.DeepCopy()
modifiedSubnet.Spec.U2OInterconnection = true
subnetClient.PatchSync(subnet, modifiedSubnet)
time.Sleep(5 * time.Second)
underlayPod = podClient.CreateSync(originUnderlayPod)
subnet = subnetClient.Get(subnetName)
checkU2OItems(true, subnet, underlayPod, overlayPod)
ginkgo.By("step4: check if kube-ovn-controller restart")
framework.RestartSystemDeployment("kube-ovn-controller", true)
checkU2OItems(true, subnet, underlayPod, overlayPod)
ginkgo.By("step5: Disable u2o check after restart kube-controller")
podClient.DeleteSync(u2oPodNameUnderlay)
subnet = subnetClient.Get(subnetName)
modifiedSubnet = subnet.DeepCopy()
modifiedSubnet.Spec.U2OInterconnection = false
subnetClient.PatchSync(subnet, modifiedSubnet)
time.Sleep(5 * time.Second)
underlayPod = podClient.CreateSync(originUnderlayPod)
subnet = subnetClient.Get(subnetName)
checkU2OItems(false, subnet, underlayPod, overlayPod)
ginkgo.By("step6: recover enable u2o check after restart kube-controller")
podClient.DeleteSync(u2oPodNameUnderlay)
subnet = subnetClient.Get(subnetName)
modifiedSubnet = subnet.DeepCopy()
modifiedSubnet.Spec.U2OInterconnection = true
subnetClient.PatchSync(subnet, modifiedSubnet)
time.Sleep(5 * time.Second)
underlayPod = podClient.CreateSync(originUnderlayPod)
subnet = subnetClient.Get(subnetName)
checkU2OItems(true, subnet, underlayPod, overlayPod)
})
})
func checkU2OItems(isEnableU2O bool, subnet *apiv1.Subnet, underlayPod, overlayPod *corev1.Pod) {
ginkgo.By("checking underlay subnet's u2o interconnect ip")
if isEnableU2O {
framework.ExpectTrue(subnet.Spec.U2OInterconnection)
framework.ExpectIPInCIDR(subnet.Status.U2OInterconnectionIP, subnet.Spec.CIDRBlock)
} else {
framework.ExpectFalse(subnet.Spec.U2OInterconnection)
framework.ExpectEmpty(subnet.Status.U2OInterconnectionIP)
}
v4gw, v6gw := util.SplitStringIP(subnet.Spec.Gateway)
underlayCidr := strings.Split(subnet.Spec.CIDRBlock, ",")
for _, cidr := range underlayCidr {
var protocolStr, gw string
if util.CheckProtocol(cidr) == apiv1.ProtocolIPv4 {
protocolStr = "ip4"
gw = v4gw
ginkgo.By("checking underlay subnet's using ips")
if isEnableU2O {
framework.ExpectEqual(int(subnet.Status.V4UsingIPs), 2)
} else {
framework.ExpectEqual(int(subnet.Status.V4UsingIPs), 1)
}
} else {
protocolStr = "ip6"
gw = v6gw
if isEnableU2O {
framework.ExpectEqual(int(subnet.Status.V6UsingIPs), 2)
} else {
framework.ExpectEqual(int(subnet.Status.V6UsingIPs), 1)
}
}
agName := strings.Replace(fmt.Sprintf("%s.u2o_exclude_ip.%s", subnet.Name, protocolStr), "-", ".", -1)
ginkgo.By(fmt.Sprintf("checking underlay subnet's policy1 route %s", protocolStr))
hitPolicyStr := fmt.Sprintf("%d %s.dst == $%s && %s.src == %s allow", util.SubnetRouterPolicyPriority, protocolStr, agName, protocolStr, cidr)
checkPolicy(hitPolicyStr, isEnableU2O)
ginkgo.By(fmt.Sprintf("checking underlay subnet's policy2 route %s", protocolStr))
hitPolicyStr = fmt.Sprintf("%d %s.dst == %s && %s.dst != $%s allow", util.SubnetRouterPolicyPriority, protocolStr, cidr, protocolStr, agName)
checkPolicy(hitPolicyStr, isEnableU2O)
ginkgo.By(fmt.Sprintf("checking underlay subnet's policy3 route %s", protocolStr))
hitPolicyStr = fmt.Sprintf("%d %s.src == %s reroute %s", util.GatewayRouterPolicyPriority, protocolStr, cidr, gw)
checkPolicy(hitPolicyStr, isEnableU2O)
}
ginkgo.By("checking underlay pod's ip route's nexthop equal the u2o interconnection ip")
routes, err := iproute.RouteShow("", "eth0", func(cmd ...string) ([]byte, []byte, error) {
return framework.KubectlExec(underlayPod.Namespace, underlayPod.Name, cmd...)
})
framework.ExpectNoError(err)
framework.ExpectNotEmpty(routes)
v4InterconnIp, v6InterconnIp := util.SplitStringIP(subnet.Status.U2OInterconnectionIP)
isV4DefaultRouteExist := false
isV6DefaultRouteExist := false
for _, route := range routes {
if route.Dst == "default" {
if util.CheckProtocol(route.Gateway) == apiv1.ProtocolIPv4 {
if isEnableU2O {
framework.ExpectEqual(route.Gateway, v4InterconnIp)
} else {
framework.ExpectEqual(route.Gateway, v4gw)
}
isV4DefaultRouteExist = true
} else {
if isEnableU2O {
framework.ExpectEqual(route.Gateway, v6InterconnIp)
} else {
framework.ExpectEqual(route.Gateway, v6gw)
}
isV6DefaultRouteExist = true
}
}
}
if subnet.Spec.Protocol == apiv1.ProtocolIPv4 {
framework.ExpectTrue(isV4DefaultRouteExist)
} else if subnet.Spec.Protocol == apiv1.ProtocolIPv6 {
framework.ExpectTrue(isV6DefaultRouteExist)
} else if subnet.Spec.Protocol == apiv1.ProtocolDual {
framework.ExpectTrue(isV4DefaultRouteExist)
framework.ExpectTrue(isV6DefaultRouteExist)
}
UPodIPs := underlayPod.Status.PodIPs
OPodIPs := overlayPod.Status.PodIPs
var v4UPodIP, v4OPodIP, v6UPodIP, v6OPodIP string
for _, UPodIP := range UPodIPs {
if util.CheckProtocol(UPodIP.IP) == apiv1.ProtocolIPv4 {
v4UPodIP = UPodIP.IP
} else {
v6UPodIP = UPodIP.IP
}
}
for _, OPodIP := range OPodIPs {
if util.CheckProtocol(OPodIP.IP) == apiv1.ProtocolIPv4 {
v4OPodIP = OPodIP.IP
} else {
v6OPodIP = OPodIP.IP
}
}
if v4UPodIP != "" && v4OPodIP != "" {
ginkgo.By("checking underlay pod access to overlay pod v4")
checkReachable(underlayPod.Name, underlayPod.Namespace, v4UPodIP, v4OPodIP, strconv.Itoa(curlListenPort), isEnableU2O)
ginkgo.By("checking overlay pod access to underlay pod v4")
checkReachable(overlayPod.Name, overlayPod.Namespace, v4OPodIP, v4UPodIP, strconv.Itoa(curlListenPort), isEnableU2O)
}
if v6UPodIP != "" && v6OPodIP != "" {
ginkgo.By("checking underlay pod access to overlay pod v6")
checkReachable(underlayPod.Name, underlayPod.Namespace, v6UPodIP, v6OPodIP, strconv.Itoa(curlListenPort), isEnableU2O)
ginkgo.By("checking overlay pod access to underlay pod v6")
checkReachable(overlayPod.Name, overlayPod.Namespace, v6OPodIP, v6UPodIP, strconv.Itoa(curlListenPort), isEnableU2O)
}
}
func checkReachable(podName, podNamespace, sourceIP, targetIP, targetPort string, expectReachable bool) {
ginkgo.By("checking curl reachable")
cmd := fmt.Sprintf("kubectl exec %s -n %s -- curl -q -s --connect-timeout 5 %s/clientip", podName, podNamespace, net.JoinHostPort(targetIP, targetPort))
output, _ := exec.Command("bash", "-c", cmd).CombinedOutput()
outputStr := string(output)
if expectReachable {
client, _, err := net.SplitHostPort(strings.TrimSpace(outputStr))
framework.ExpectNoError(err)
// check packet has not SNAT
framework.ExpectEqual(sourceIP, client)
} else {
isReachable := !strings.Contains(outputStr, "terminated with exit code")
framework.ExpectEqual(isReachable, expectReachable)
}
}
func checkPolicy(hitPolicyStr string, expectPolicyExist bool) {
policyExist := false
output, _ := exec.Command("bash", "-c", "kubectl ko nbctl lr-policy-list ovn-cluster").CombinedOutput()
outputStr := string(output)
lines := strings.Split(outputStr, "\n")
for _, line := range lines {
if strings.Contains(strings.Join(strings.Fields(line), " "), hitPolicyStr) {
policyExist = true
break
}
}
framework.ExpectEqual(policyExist, expectPolicyExist)
}