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subnet.go
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subnet.go
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package controller
import (
"context"
"fmt"
"math"
"net"
"reflect"
"strconv"
"strings"
"time"
v1 "k8s.io/api/core/v1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/types"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/client-go/tools/cache"
"k8s.io/klog"
kubeovnv1 "github.com/kubeovn/kube-ovn/pkg/apis/kubeovn/v1"
"github.com/kubeovn/kube-ovn/pkg/ipam"
"github.com/kubeovn/kube-ovn/pkg/ovs"
"github.com/kubeovn/kube-ovn/pkg/util"
)
func (c *Controller) enqueueAddSubnet(obj interface{}) {
if !c.isLeader() {
return
}
var key string
var err error
if key, err = cache.MetaNamespaceKeyFunc(obj); err != nil {
utilruntime.HandleError(err)
return
}
klog.V(3).Infof("enqueue add subnet %s", key)
c.addOrUpdateSubnetQueue.Add(key)
}
func (c *Controller) enqueueDeleteSubnet(obj interface{}) {
if !c.isLeader() {
return
}
var key string
var err error
if key, err = cache.MetaNamespaceKeyFunc(obj); err != nil {
utilruntime.HandleError(err)
return
}
klog.V(3).Infof("enqueue delete subnet %s", key)
subnet := obj.(*kubeovnv1.Subnet)
c.deleteSubnetQueue.Add(obj)
if subnet.Spec.GatewayType == kubeovnv1.GWCentralizedType {
c.deleteRouteQueue.Add(obj)
}
}
func (c *Controller) enqueueUpdateSubnet(old, new interface{}) {
if !c.isLeader() {
return
}
oldSubnet := old.(*kubeovnv1.Subnet)
newSubnet := new.(*kubeovnv1.Subnet)
var key string
var err error
if key, err = cache.MetaNamespaceKeyFunc(new); err != nil {
utilruntime.HandleError(err)
return
}
if !newSubnet.DeletionTimestamp.IsZero() && newSubnet.Status.UsingIPs == 0 {
c.addOrUpdateSubnetQueue.Add(key)
return
}
if oldSubnet.Spec.Private != newSubnet.Spec.Private ||
oldSubnet.Spec.CIDRBlock != newSubnet.Spec.CIDRBlock ||
!reflect.DeepEqual(oldSubnet.Spec.AllowSubnets, newSubnet.Spec.AllowSubnets) ||
!reflect.DeepEqual(oldSubnet.Spec.Namespaces, newSubnet.Spec.Namespaces) ||
oldSubnet.Spec.GatewayType != newSubnet.Spec.GatewayType ||
oldSubnet.Spec.GatewayNode != newSubnet.Spec.GatewayNode ||
oldSubnet.Spec.UnderlayGateway != newSubnet.Spec.UnderlayGateway ||
oldSubnet.Spec.Gateway != newSubnet.Spec.Gateway ||
!reflect.DeepEqual(oldSubnet.Spec.ExcludeIps, newSubnet.Spec.ExcludeIps) ||
oldSubnet.Spec.Vlan != newSubnet.Spec.Vlan {
klog.V(3).Infof("enqueue update subnet %s", key)
c.addOrUpdateSubnetQueue.Add(key)
}
}
func (c *Controller) runAddSubnetWorker() {
for c.processNextAddSubnetWorkItem() {
}
}
func (c *Controller) runUpdateSubnetStatusWorker() {
for c.processNextUpdateSubnetStatusWorkItem() {
}
}
func (c *Controller) runDeleteRouteWorker() {
for c.processNextDeleteRoutePodWorkItem() {
}
}
func (c *Controller) runDeleteSubnetWorker() {
for c.processNextDeleteSubnetWorkItem() {
}
}
func (c *Controller) processNextAddSubnetWorkItem() bool {
obj, shutdown := c.addOrUpdateSubnetQueue.Get()
if shutdown {
return false
}
err := func(obj interface{}) error {
defer c.addOrUpdateSubnetQueue.Done(obj)
var key string
var ok bool
if key, ok = obj.(string); !ok {
c.addOrUpdateSubnetQueue.Forget(obj)
utilruntime.HandleError(fmt.Errorf("expected string in workqueue but got %#v", obj))
return nil
}
if err := c.handleAddOrUpdateSubnet(key); err != nil {
c.addOrUpdateSubnetQueue.AddRateLimited(key)
return fmt.Errorf("error syncing '%s': %s, requeuing", key, err.Error())
}
c.addOrUpdateSubnetQueue.Forget(obj)
return nil
}(obj)
if err != nil {
utilruntime.HandleError(err)
return true
}
return true
}
func (c *Controller) processNextDeleteRoutePodWorkItem() bool {
obj, shutdown := c.deleteRouteQueue.Get()
if shutdown {
return false
}
err := func(obj interface{}) error {
defer c.deleteRouteQueue.Done(obj)
var subnet *kubeovnv1.Subnet
var ok bool
if subnet, ok = obj.(*kubeovnv1.Subnet); !ok {
c.deleteRouteQueue.Forget(obj)
utilruntime.HandleError(fmt.Errorf("expected subnet in workqueue but got %#v", obj))
return nil
}
if err := c.handleDeleteRoute(subnet); err != nil {
c.deleteRouteQueue.AddRateLimited(subnet)
return fmt.Errorf("error syncing '%s': %s, requeuing", subnet.Name, err.Error())
}
c.deleteRouteQueue.Forget(obj)
return nil
}(obj)
if err != nil {
utilruntime.HandleError(err)
return true
}
return true
}
func (c *Controller) processNextUpdateSubnetStatusWorkItem() bool {
obj, shutdown := c.updateSubnetStatusQueue.Get()
if shutdown {
return false
}
err := func(obj interface{}) error {
defer c.updateSubnetStatusQueue.Done(obj)
var key string
var ok bool
if key, ok = obj.(string); !ok {
c.updateSubnetStatusQueue.Forget(obj)
utilruntime.HandleError(fmt.Errorf("expected string in workqueue but got %#v", obj))
return nil
}
if err := c.handleUpdateSubnetStatus(key); err != nil {
c.updateSubnetStatusQueue.AddRateLimited(key)
return fmt.Errorf("error syncing '%s': %s, requeuing", key, err.Error())
}
c.updateSubnetStatusQueue.Forget(obj)
return nil
}(obj)
if err != nil {
utilruntime.HandleError(err)
return true
}
return true
}
func (c *Controller) processNextDeleteSubnetWorkItem() bool {
obj, shutdown := c.deleteSubnetQueue.Get()
if shutdown {
return false
}
err := func(obj interface{}) error {
defer c.deleteSubnetQueue.Done(obj)
var subnet *kubeovnv1.Subnet
var ok bool
if subnet, ok = obj.(*kubeovnv1.Subnet); !ok {
c.deleteSubnetQueue.Forget(obj)
utilruntime.HandleError(fmt.Errorf("expected string in workqueue but got %#v", obj))
return nil
}
if err := c.handleDeleteSubnet(subnet); err != nil {
c.deleteSubnetQueue.AddRateLimited(obj)
return fmt.Errorf("error syncing '%s': %s, requeuing", subnet.Name, err.Error())
}
c.deleteSubnetQueue.Forget(obj)
return nil
}(obj)
if err != nil {
utilruntime.HandleError(err)
return true
}
return true
}
func formatSubnet(subnet *kubeovnv1.Subnet, c *Controller) error {
var err error
changed := false
changed, err = checkSubnetChanged(subnet)
if err != nil {
return err
}
if subnet.Spec.Provider == "" {
subnet.Spec.Provider = util.OvnProvider
changed = true
}
if subnet.Spec.Protocol == "" || subnet.Spec.Protocol != util.CheckProtocol(subnet.Spec.CIDRBlock) {
subnet.Spec.Protocol = util.CheckProtocol(subnet.Spec.CIDRBlock)
changed = true
}
if subnet.Spec.GatewayType == "" {
subnet.Spec.GatewayType = kubeovnv1.GWDistributedType
changed = true
}
if subnet.Spec.Vpc == "" {
changed = true
subnet.Spec.Vpc = util.DefaultVpc
// Some features only work in the default VPC
if subnet.Spec.Default && subnet.Name != c.config.DefaultLogicalSwitch {
subnet.Spec.Default = false
}
if subnet.Spec.Vlan != "" {
if _, err := c.vlansLister.Get(subnet.Spec.Vlan); err != nil {
klog.Warningf("subnet %s reference a none exist vlan %s", subnet.Name, subnet.Spec.Vlan)
subnet.Spec.Vlan = ""
}
}
}
klog.Infof("format subnet %v, changed %v", subnet.Name, changed)
if changed {
_, err = c.config.KubeOvnClient.KubeovnV1().Subnets().Update(context.Background(), subnet, metav1.UpdateOptions{})
if err != nil {
klog.Errorf("failed to update subnet %s, %v", subnet.Name, err)
return err
}
}
return nil
}
func checkSubnetChanged(subnet *kubeovnv1.Subnet) (bool, error) {
var err error
changed := false
ret := false
// changed value may be overlapped, so use ret to record value
changed, err = checkAndUpdateCIDR(subnet)
if err != nil {
return changed, err
}
if changed {
ret = true
}
changed, err = checkAndUpdateGateway(subnet)
if err != nil {
return changed, err
}
if changed {
ret = true
}
changed = checkAndUpdateExcludeIps(subnet)
if changed {
ret = true
}
return ret, nil
}
func checkAndUpdateCIDR(subnet *kubeovnv1.Subnet) (bool, error) {
changed := false
var cidrBlocks []string
for _, cidr := range strings.Split(subnet.Spec.CIDRBlock, ",") {
_, ipNet, err := net.ParseCIDR(cidr)
if err != nil {
return false, fmt.Errorf("subnet %s cidr %s is not a valid cidrblock", subnet.Name, cidr)
}
if ipNet.String() != cidr {
changed = true
}
cidrBlocks = append(cidrBlocks, ipNet.String())
}
subnet.Spec.CIDRBlock = strings.Join(cidrBlocks, ",")
return changed, nil
}
func checkAndUpdateGateway(subnet *kubeovnv1.Subnet) (bool, error) {
changed := false
var gw string
var err error
if subnet.Spec.Gateway == "" {
gw, err = util.GetGwByCidr(subnet.Spec.CIDRBlock)
} else if util.CheckProtocol(subnet.Spec.Gateway) != util.CheckProtocol(subnet.Spec.CIDRBlock) {
gw, err = util.AppendGwByCidr(subnet.Spec.Gateway, subnet.Spec.CIDRBlock)
} else {
gw = subnet.Spec.Gateway
}
if err != nil {
klog.Error(err)
return false, err
}
if subnet.Spec.Gateway != gw {
subnet.Spec.Gateway = gw
changed = true
}
return changed, nil
}
// this func must be called after subnet.Spec.Gateway is valued
func checkAndUpdateExcludeIps(subnet *kubeovnv1.Subnet) bool {
changed := false
var excludeIps []string
excludeIps = append(excludeIps, strings.Split(subnet.Spec.Gateway, ",")...)
if len(subnet.Spec.ExcludeIps) == 0 {
subnet.Spec.ExcludeIps = excludeIps
changed = true
} else {
checkAndFormatsExcludeIps(subnet)
for _, gw := range excludeIps {
gwExists := false
for _, excludeIP := range subnet.Spec.ExcludeIps {
if util.ContainsIPs(excludeIP, gw) {
gwExists = true
break
}
}
if !gwExists {
subnet.Spec.ExcludeIps = append(subnet.Spec.ExcludeIps, gw)
changed = true
}
}
}
return changed
}
func (c *Controller) handleSubnetFinalizer(subnet *kubeovnv1.Subnet) (bool, error) {
if subnet.DeletionTimestamp.IsZero() && !util.ContainsString(subnet.Finalizers, util.ControllerName) {
subnet.Finalizers = append(subnet.Finalizers, util.ControllerName)
if _, err := c.config.KubeOvnClient.KubeovnV1().Subnets().Update(context.Background(), subnet, metav1.UpdateOptions{}); err != nil {
klog.Errorf("failed to add finalizer to subnet %s, %v", subnet.Name, err)
return false, err
}
// wait local cache ready
time.Sleep(1 * time.Second)
return false, nil
}
usingIps := subnet.Status.V4UsingIPs
if util.CheckProtocol(subnet.Spec.CIDRBlock) == kubeovnv1.ProtocolIPv6 {
usingIps = subnet.Status.V6UsingIPs
}
if !subnet.DeletionTimestamp.IsZero() && usingIps == 0 {
subnet.Finalizers = util.RemoveString(subnet.Finalizers, util.ControllerName)
if _, err := c.config.KubeOvnClient.KubeovnV1().Subnets().Update(context.Background(), subnet, metav1.UpdateOptions{}); err != nil {
klog.Errorf("failed to remove finalizer from subnet %s, %v", subnet.Name, err)
return false, err
}
return true, nil
}
return false, nil
}
func (c Controller) patchSubnetStatus(subnet *kubeovnv1.Subnet, reason string, errStr string) {
if errStr != "" {
subnet.Status.SetError(reason, errStr)
subnet.Status.NotValidated(reason, errStr)
subnet.Status.NotReady(reason, errStr)
c.recorder.Eventf(subnet, v1.EventTypeWarning, reason, errStr)
} else {
subnet.Status.Validated(reason, "")
if reason == "SetPrivateLogicalSwitchSuccess" || reason == "ResetLogicalSwitchAclSuccess" {
subnet.Status.Ready(reason, "")
}
}
bytes, err := subnet.Status.Bytes()
if err != nil {
klog.Error(err)
} else {
if _, err := c.config.KubeOvnClient.KubeovnV1().Subnets().Patch(context.Background(), subnet.Name, types.MergePatchType, bytes, metav1.PatchOptions{}, "status"); err != nil {
klog.Error("patch subnet status failed", err)
}
}
}
func (c *Controller) handleAddOrUpdateSubnet(key string) error {
var err error
subnet, err := c.subnetsLister.Get(key)
if err != nil {
if k8serrors.IsNotFound(err) {
return nil
}
return err
}
deleted, err := c.handleSubnetFinalizer(subnet)
if err != nil {
klog.Errorf("handle subnet finalizer failed %v", err)
return err
}
if deleted {
return nil
}
subnet, err = c.subnetsLister.Get(key)
if err != nil {
if k8serrors.IsNotFound(err) {
return nil
}
return err
}
if err := formatSubnet(subnet, c); err != nil {
return err
}
vpc, err := c.vpcsLister.Get(subnet.Spec.Vpc)
if err != nil {
klog.Errorf("failed to get subnet's vpc '%s', %v", subnet.Spec.Vpc, err)
return err
}
if !vpc.Status.Standby {
err = fmt.Errorf("the vpc '%s' not standby yet", vpc.Name)
klog.Error(err)
return err
}
if !vpc.Status.Default {
for _, ns := range subnet.Spec.Namespaces {
if !util.ContainsString(vpc.Spec.Namespaces, ns) {
err = fmt.Errorf("namespace '%s' is out of range to custom vpc '%s'", ns, vpc.Name)
klog.Error(err)
return err
}
}
} else {
vpcs, err := c.vpcsLister.List(labels.Everything())
if err != nil {
klog.Errorf("failed to list vpc, %v", err)
return err
}
for _, vpc := range vpcs {
if subnet.Spec.Vpc != vpc.Name && !vpc.Status.Default && util.IsStringsOverlap(vpc.Spec.Namespaces, subnet.Spec.Namespaces) {
err = fmt.Errorf("namespaces %v are overlap with vpc '%s'", subnet.Spec.Namespaces, vpc.Name)
klog.Error(err)
return err
}
}
}
if util.CheckProtocol(subnet.Spec.CIDRBlock) == kubeovnv1.ProtocolDual {
err = calcDualSubnetStatusIP(subnet, c)
} else {
err = calcSubnetStatusIP(subnet, c)
}
if err != nil {
klog.Errorf("calculate subnet %s used ip failed, %v", subnet.Name, err)
return err
}
if err := c.ipam.AddOrUpdateSubnet(subnet.Name, subnet.Spec.CIDRBlock, subnet.Spec.ExcludeIps); err != nil {
return err
}
if !isOvnSubnet(subnet) {
return nil
}
if err = util.ValidateSubnet(*subnet); err != nil {
klog.Errorf("failed to validate subnet %s, %v", subnet.Name, err)
c.patchSubnetStatus(subnet, "ValidateLogicalSwitchFailed", err.Error())
return err
} else {
c.patchSubnetStatus(subnet, "ValidateLogicalSwitchSuccess", "")
}
subnetList, err := c.subnetsLister.List(labels.Everything())
if err != nil {
klog.Errorf("failed to list subnets %v", err)
return err
}
for _, sub := range subnetList {
if sub.Spec.Vpc != subnet.Spec.Vpc || sub.Name == subnet.Name {
continue
}
if util.CIDRConflict(sub.Spec.CIDRBlock, subnet.Spec.CIDRBlock) {
err = fmt.Errorf("subnet %s cidr %s is conflict with subnet %s cidr %s", subnet.Name, subnet.Spec.CIDRBlock, sub.Name, sub.Spec.CIDRBlock)
klog.Error(err)
c.patchSubnetStatus(subnet, "ValidateLogicalSwitchFailed", err.Error())
return err
}
if subnet.Spec.ExternalEgressGateway != "" && sub.Spec.ExternalEgressGateway != "" &&
subnet.Spec.PolicyRoutingTableID == sub.Spec.PolicyRoutingTableID {
err = fmt.Errorf("subnet %s policy routing table ID %d is conflict with subnet %s policy routing table ID %d", subnet.Name, subnet.Spec.PolicyRoutingTableID, sub.Name, sub.Spec.PolicyRoutingTableID)
klog.Error(err)
c.patchSubnetStatus(subnet, "ValidateLogicalSwitchFailed", err.Error())
return err
}
}
nodes, err := c.nodesLister.List(labels.Everything())
if err != nil {
klog.Errorf("failed to list nodes %v", err)
return err
}
if subnet.Spec.Vpc != util.DefaultVpc && subnet.Spec.Vlan != "" && !subnet.Spec.UnderlayGateway {
for _, node := range nodes {
for _, addr := range node.Status.Addresses {
if addr.Type == v1.NodeInternalIP && util.CIDRContainIP(subnet.Spec.CIDRBlock, addr.Address) {
err = fmt.Errorf("subnet %s cidr %s conflict with node %s address %s", subnet.Name, subnet.Spec.CIDRBlock, node.Name, addr.Address)
klog.Error(err)
c.patchSubnetStatus(subnet, "ValidateLogicalSwitchFailed", err.Error())
return err
}
}
}
}
exist, err := c.ovnClient.LogicalSwitchExists(subnet.Name)
if err != nil {
klog.Errorf("failed to list logical switch, %v", err)
c.patchSubnetStatus(subnet, "ListLogicalSwitchFailed", err.Error())
return err
}
if !exist {
subnet.Status.EnsureStandardConditions()
// If multiple namespace use same ls name, only first one will success
if err := c.ovnClient.CreateLogicalSwitch(subnet.Name, vpc.Status.Router, subnet.Spec.Protocol, subnet.Spec.CIDRBlock, subnet.Spec.Gateway, subnet.Spec.ExcludeIps, subnet.Spec.UnderlayGateway, vpc.Status.Default); err != nil {
c.patchSubnetStatus(subnet, "CreateLogicalSwitchFailed", err.Error())
return err
}
} else {
// logical switch exists, only update other_config
if err := c.ovnClient.SetLogicalSwitchConfig(subnet.Name, subnet.Spec.UnderlayGateway, vpc.Status.Router, subnet.Spec.Protocol, subnet.Spec.CIDRBlock, subnet.Spec.Gateway, subnet.Spec.ExcludeIps); err != nil {
c.patchSubnetStatus(subnet, "SetLogicalSwitchConfigFailed", err.Error())
return err
}
if subnet.Spec.UnderlayGateway {
if err := c.ovnClient.RemoveRouterPort(subnet.Name, vpc.Status.Router); err != nil {
klog.Errorf("failed to remove router port from %s, %v", subnet.Name, err)
return err
}
}
}
if err := c.reconcileSubnet(subnet); err != nil {
klog.Errorf("reconcile subnet for %s failed, %v", subnet.Name, err)
return err
}
if subnet.Spec.Private {
for _, cidrBlock := range strings.Split(subnet.Spec.CIDRBlock, ",") {
protocol := util.CheckProtocol(cidrBlock)
if err := c.ovnClient.SetPrivateLogicalSwitch(subnet.Name, protocol, cidrBlock, subnet.Spec.AllowSubnets); err != nil {
c.patchSubnetStatus(subnet, "SetPrivateLogicalSwitchFailed", err.Error())
return err
}
c.patchSubnetStatus(subnet, "SetPrivateLogicalSwitchSuccess", "")
}
} else {
if err := c.ovnClient.ResetLogicalSwitchAcl(subnet.Name); err != nil {
c.patchSubnetStatus(subnet, "ResetLogicalSwitchAclFailed", err.Error())
return err
}
c.patchSubnetStatus(subnet, "ResetLogicalSwitchAclSuccess", "")
}
c.updateVpcStatusQueue.Add(subnet.Spec.Vpc)
if subnet.Spec.Vlan != "" {
vlan, err := c.vlansLister.Get(subnet.Spec.Vlan)
if err != nil {
klog.Errorf("failed to get vlan %s: %v", vlan.Spec.Provider, err)
return err
}
if !util.ContainsString(vlan.Status.Subnets, subnet.Name) {
vlan.Status.Subnets = append(vlan.Status.Subnets, subnet.Name)
bytes, err := vlan.Status.Bytes()
if err != nil {
klog.Error(err)
return err
}
_, err = c.config.KubeOvnClient.KubeovnV1().Vlans().Patch(context.Background(), vlan.Name, types.MergePatchType, bytes, metav1.PatchOptions{})
if err != nil {
klog.Errorf("failed to patch vlan %s: %v", vlan.Name, err)
return err
}
}
}
return nil
}
func (c *Controller) handleUpdateSubnetStatus(key string) error {
subnet, err := c.subnetsLister.Get(key)
if err != nil {
if k8serrors.IsNotFound(err) {
return nil
}
return err
}
if util.CheckProtocol(subnet.Spec.CIDRBlock) == kubeovnv1.ProtocolDual {
return calcDualSubnetStatusIP(subnet, c)
} else {
return calcSubnetStatusIP(subnet, c)
}
}
func (c *Controller) handleDeleteRoute(subnet *kubeovnv1.Subnet) error {
vpc, err := c.vpcsLister.Get(subnet.Spec.Vpc)
if err != nil {
if k8serrors.IsNotFound(err) {
return nil
}
return err
}
return c.deleteStaticRoute(subnet.Spec.CIDRBlock, vpc.Status.Router, subnet)
}
func (c *Controller) handleDeleteLogicalSwitch(key string) error {
c.ipam.DeleteSubnet(key)
exist, err := c.ovnClient.LogicalSwitchExists(key)
if err != nil {
klog.Errorf("failed to list logical switch, %v", err)
return err
}
if !exist {
return nil
}
if err = c.ovnClient.CleanLogicalSwitchAcl(key); err != nil {
klog.Errorf("failed to delete acl of logical switch %s %v", key, err)
return err
}
if err = c.ovnClient.DeleteLogicalSwitch(key); err != nil {
klog.Errorf("failed to delete logical switch %s %v", key, err)
return err
}
nss, err := c.namespacesLister.List(labels.Everything())
if err != nil {
klog.Errorf("failed to list namespaces, %v", err)
return err
}
// re-annotate namespace
for _, ns := range nss {
annotations := ns.GetAnnotations()
if annotations == nil {
continue
}
if annotations[util.LogicalSwitchAnnotation] == key {
c.enqueueAddNamespace(ns)
}
}
return c.delLocalnet(key)
}
func (c *Controller) handleDeleteSubnet(subnet *kubeovnv1.Subnet) error {
c.updateVpcStatusQueue.Add(subnet.Spec.Vpc)
err := c.handleDeleteLogicalSwitch(subnet.Name)
if err != nil {
klog.Errorf("failed to delete logical switch %s %v", subnet.Name, err)
return err
}
vpc, err := c.vpcsLister.Get(subnet.Spec.Vpc)
if err == nil && vpc.Status.Router != "" {
if err = c.ovnClient.RemoveRouterPort(subnet.Name, vpc.Status.Router); err != nil {
klog.Errorf("failed to delete router port %s %v", subnet.Name, err)
return err
}
} else {
if k8serrors.IsNotFound(err) {
if err = c.ovnClient.RemoveRouterPort(subnet.Name, util.DefaultVpc); err != nil {
klog.Errorf("failed to delete router port %s %v", subnet.Name, err)
return err
}
} else {
klog.Errorf("failed to get vpc, %v", err)
return err
}
}
vlans, err := c.vlansLister.List(labels.Everything())
if err != nil && !k8serrors.IsNotFound(err) {
klog.Errorf("failed to list vlans: %v", err)
return err
}
for _, vlan := range vlans {
if err = c.updateVlanStatusForSubnetDeletion(vlan, subnet.Name); err != nil {
return err
}
}
return nil
}
func (c *Controller) updateVlanStatusForSubnetDeletion(vlan *kubeovnv1.Vlan, subnet string) error {
if util.ContainsString(vlan.Status.Subnets, subnet) {
vlan.Status.Subnets = util.RemoveString(vlan.Status.Subnets, subnet)
if len(vlan.Status.Subnets) == 0 {
bytes := []byte(`[{ "op": "remove", "path": "/status/subnets"}]`)
_, err := c.config.KubeOvnClient.KubeovnV1().Vlans().Patch(context.Background(), vlan.Name, types.JSONPatchType, bytes, metav1.PatchOptions{})
if err != nil {
klog.Errorf("failed to patch vlan %s: %v", vlan.Name, err)
return err
}
} else {
bytes, err := vlan.Status.Bytes()
if err != nil {
klog.Error(err)
return err
}
_, err = c.config.KubeOvnClient.KubeovnV1().Vlans().Patch(context.Background(), vlan.Name, types.MergePatchType, bytes, metav1.PatchOptions{})
if err != nil {
klog.Errorf("failed to patch vlan %s: %v", vlan.Name, err)
return err
}
}
}
return nil
}
func (c *Controller) reconcileSubnet(subnet *kubeovnv1.Subnet) error {
if err := c.reconcileNamespaces(subnet); err != nil {
klog.Errorf("reconcile namespaces for subnet %s failed, %v", subnet.Name, err)
return err
}
if subnet.Name != c.config.NodeSwitch {
if err := c.reconcileGateway(subnet); err != nil {
klog.Errorf("reconcile centralized gateway for subnet %s failed, %v", subnet.Name, err)
return err
}
}
if err := c.reconcileVlan(subnet); err != nil {
klog.Errorf("reconcile vlan for subnet %s failed, %v", subnet.Name, err)
return err
}
return nil
}
func (c *Controller) reconcileNamespaces(subnet *kubeovnv1.Subnet) error {
var err error
// 1. unbind from previous subnet
subnets, err := c.subnetsLister.List(labels.Everything())
if err != nil {
return err
}
namespaceMap := map[string]bool{}
for _, ns := range subnet.Spec.Namespaces {
namespaceMap[ns] = true
}
for _, sub := range subnets {
if sub.Name == subnet.Name || len(sub.Spec.Namespaces) == 0 {
continue
}
changed := false
reservedNamespaces := []string{}
for _, ns := range sub.Spec.Namespaces {
if namespaceMap[ns] {
changed = true
} else {
reservedNamespaces = append(reservedNamespaces, ns)
}
}
if changed {
sub.Spec.Namespaces = reservedNamespaces
subnet, err = c.config.KubeOvnClient.KubeovnV1().Subnets().Update(context.Background(), sub, metav1.UpdateOptions{})
if err != nil {
klog.Errorf("failed to unbind namespace from subnet %s, %v", sub.Name, err)
return err
}
}
}
// 2. add annotations to bind namespace
for _, ns := range subnet.Spec.Namespaces {
c.addNamespaceQueue.Add(ns)
}
// 3. update unbind namespace annotation
namespaces, err := c.namespacesLister.List(labels.Everything())
if err != nil {
klog.Errorf("failed to list namespaces, %v", err)
return err
}
for _, ns := range namespaces {
if ns.Annotations != nil && ns.Annotations[util.LogicalSwitchAnnotation] == subnet.Name && !namespaceMap[ns.Name] {
c.addNamespaceQueue.Add(ns.Name)
}
}
return nil
}
func (c *Controller) reconcileGateway(subnet *kubeovnv1.Subnet) error {
pods, err := c.podsLister.Pods(metav1.NamespaceAll).List(labels.Everything())
if err != nil {
klog.Errorf("failed to list pods %v", err)
return err
}
if subnet.Spec.UnderlayGateway {
for _, pod := range pods {
if pod.Annotations[util.LogicalSwitchAnnotation] == subnet.Name && pod.Annotations[util.IpAddressAnnotation] != "" {
if err := c.deleteStaticRoute(pod.Annotations[util.IpAddressAnnotation], c.config.ClusterRouter, subnet); err != nil {
return err
}
}
}
if err := c.deleteStaticRoute(subnet.Spec.CIDRBlock, c.config.ClusterRouter, subnet); err != nil {
return err
}
if err := c.ovnClient.DeleteLogicalSwitchPort(fmt.Sprintf("%s-%s", subnet.Name, c.config.ClusterRouter)); err != nil {
klog.Errorf("failed to delete lsp %s-%s, %v", subnet.Name, c.config.ClusterRouter, err)
return err
}
if err := c.ovnClient.DeleteLogicalRouterPort(fmt.Sprintf("%s-%s", c.config.ClusterRouter, subnet.Name)); err != nil {
klog.Errorf("failed to delete lrp %s-%s, %v", c.config.ClusterRouter, subnet.Name, err)
return err
}
} else {
// if gw is distributed remove activateGateway field
if subnet.Spec.GatewayType == kubeovnv1.GWDistributedType {
if subnet.Spec.GatewayNode == "" {
return nil
}
subnet.Spec.GatewayNode = ""
bytes, err := subnet.Status.Bytes()
if err != nil {
return err
}
_, err = c.config.KubeOvnClient.KubeovnV1().Subnets().Patch(context.Background(), subnet.Name, types.MergePatchType, bytes, metav1.PatchOptions{}, "")
if err != nil {
return err
}
for _, pod := range pods {
if !isPodAlive(pod) || pod.Annotations[util.IpAddressAnnotation] == "" || pod.Annotations[util.LogicalSwitchAnnotation] != subnet.Name {
continue
}
node, err := c.nodesLister.Get(pod.Spec.NodeName)
if err != nil {
if k8serrors.IsNotFound(err) {
continue
} else {
klog.Errorf("failed to get node %s, %v", pod.Spec.NodeName, err)
return err
}
}
nodeIP, err := getNodeTunlIP(node)
if err != nil {
klog.Errorf("failed to get node %s tunl ip, %v", node.Name, err)
return err
}
nextHop := getNextHopByTunnelIP(nodeIP)
if pod.Annotations[util.NorthGatewayAnnotation] != "" {
nextHop = pod.Annotations[util.NorthGatewayAnnotation]
}
if err := c.ovnClient.AddStaticRoute(ovs.PolicySrcIP, pod.Annotations[util.IpAddressAnnotation], nextHop, c.config.ClusterRouter, util.NormalRouteType); err != nil {
klog.Errorf("add static route failed, %v", err)
return err
}
}
return c.deleteStaticRoute(subnet.Spec.CIDRBlock, c.config.ClusterRouter, subnet)
} else {
klog.Infof("start to init centralized gateway for subnet %s", subnet.Name)
if subnet.Spec.GatewayNode == "" {
klog.Errorf("subnet %s Spec.GatewayNode field must be specified for centralized gateway type", subnet.Name)
subnet.Status.NotReady("NoReadyGateway", "")
bytes, err := subnet.Status.Bytes()
if err != nil {
return err
}
_, err = c.config.KubeOvnClient.KubeovnV1().Subnets().Patch(context.Background(), subnet.Name, types.MergePatchType, bytes, metav1.PatchOptions{}, "status")
return err
}
gwNodeExists := c.checkGwNodeExists(subnet.Spec.GatewayNode)
if !gwNodeExists {
klog.Errorf("failed to init centralized gateway for subnet %s, no gateway node exists", subnet.Name)
return fmt.Errorf("failed to add ecmp static route, no gateway node exists")
}
nodeIPs := make([]string, len(strings.Split(subnet.Spec.GatewayNode, ",")))
for _, gw := range strings.Split(subnet.Spec.GatewayNode, ",") {
gw = strings.TrimSpace(gw)
node, err := c.nodesLister.Get(gw)
if err == nil && nodeReady(node) {
nodeTunlIP := strings.TrimSpace(node.Annotations[util.IpAddressAnnotation])
if nodeTunlIP == "" {
klog.Errorf("gateway node %v has no ip annotation", node.Name)
continue
}
nodeIPs = append(nodeIPs, nodeTunlIP)
}
}
nodeIPs, err = c.filterRepeatEcmpRoutes(nodeIPs, subnet.Spec.CIDRBlock)
if err != nil {
klog.Errorf("filter ecmp static route for subnet %v, error %v", subnet.Name, err)
}
klog.Infof("subnet %s uses centralized gw %v", subnet.Name, nodeIPs)
for _, nextHop := range nodeIPs {
if err := c.ovnClient.AddStaticRoute(ovs.PolicySrcIP, subnet.Spec.CIDRBlock, nextHop, c.config.ClusterRouter, util.EcmpRouteType); err != nil {
klog.Errorf("failed to add static route, %v", err)
return err
}
}
for _, pod := range pods {
if isPodAlive(pod) && pod.Annotations[util.IpAddressAnnotation] != "" && pod.Annotations[util.LogicalSwitchAnnotation] == subnet.Name && pod.Annotations[util.NorthGatewayAnnotation] == "" {
if err := c.deleteStaticRoute(pod.Annotations[util.IpAddressAnnotation], c.config.ClusterRouter, subnet); err != nil {
return err
}
}
}
bytes, err := subnet.Status.Bytes()
subnet.Status.Ready("ReconcileCentralizedGatewaySuccess", "")
if err != nil {
return err
}
_, err = c.config.KubeOvnClient.KubeovnV1().Subnets().Patch(context.Background(), subnet.Name, types.MergePatchType, bytes, metav1.PatchOptions{}, "status")
return err
}
}
return nil
}
func (c *Controller) deleteStaticRoute(ip, router string, subnet *kubeovnv1.Subnet) error {
for _, ipStr := range strings.Split(ip, ",") {
if err := c.ovnClient.DeleteStaticRoute(ipStr, router); err != nil {
klog.Errorf("failed to delete static route %s, %v", ipStr, err)
return err
}
}