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ovn.go
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ovn.go
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package ovn
import (
"bytes"
"encoding/json"
"fmt"
"net"
"reflect"
"strconv"
"sync"
"time"
goovn "github.com/ebay/go-ovn"
nettypes "github.com/k8snetworkplumbingwg/network-attachment-definition-client/pkg/apis/k8s.cni.cncf.io/v1"
hocontroller "github.com/ovn-org/ovn-kubernetes/go-controller/hybrid-overlay/pkg/controller"
"github.com/ovn-org/ovn-kubernetes/go-controller/pkg/config"
egressipv1 "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/crd/egressip/v1"
"github.com/ovn-org/ovn-kubernetes/go-controller/pkg/factory"
"github.com/ovn-org/ovn-kubernetes/go-controller/pkg/kube"
addressset "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/ovn/address_set"
svccontroller "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/ovn/controller/services"
"github.com/ovn-org/ovn-kubernetes/go-controller/pkg/ovn/controller/unidling"
"github.com/ovn-org/ovn-kubernetes/go-controller/pkg/ovn/ipallocator"
"github.com/ovn-org/ovn-kubernetes/go-controller/pkg/ovn/subnetallocator"
ovntypes "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/types"
"github.com/ovn-org/ovn-kubernetes/go-controller/pkg/util"
egressfirewall "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/crd/egressfirewall/v1"
utilnet "k8s.io/utils/net"
kapi "k8s.io/api/core/v1"
kapisnetworking "k8s.io/api/networking/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/selection"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/sets"
utilwait "k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/informers"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/client-go/kubernetes/scheme"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/tools/record"
ref "k8s.io/client-go/tools/reference"
"k8s.io/klog/v2"
)
const (
clusterPortGroupName string = "clusterPortGroup"
clusterRtrPortGroupName string = "clusterRtrPortGroup"
egressFirewallDNSDefaultDuration time.Duration = 30 * time.Minute
)
// ACL logging severity levels
type ACLLoggingLevels struct {
Allow string `json:"allow,omitempty"`
Deny string `json:"deny,omitempty"`
}
// namespaceInfo contains information related to a Namespace. Use oc.getNamespaceLocked()
// or oc.waitForNamespaceLocked() to get a locked namespaceInfo for a Namespace, and call
// nsInfo.Unlock() on it when you are done with it. (No code outside of the code that
// manages the oc.namespaces map is ever allowed to hold an unlocked namespaceInfo.)
type namespaceInfo struct {
sync.Mutex
// addressSet is an address set object that holds the IP addresses
// of all pods in the namespace.
addressSet addressset.AddressSet
// map from NetworkPolicy name to networkPolicy. You must hold the
// namespaceInfo's mutex to add/delete/lookup policies, but must hold the
// networkPolicy's mutex (and not necessarily the namespaceInfo's) to work with
// the policy itself.
networkPolicies map[string]*networkPolicy
// defines the namespaces egressFirewall
egressFirewall *egressFirewall
// routingExternalGWs is a slice of net.IP containing the values parsed from
// annotation k8s.ovn.org/routing-external-gws
routingExternalGWs gatewayInfo
// podExternalRoutes is a cache keeping the LR routes added to the GRs when
// the k8s.ovn.org/routing-external-gws annotation is used. The first map key
// is the podIP, the second the GW and the third the GR
podExternalRoutes map[string]map[string]string
// routingExternalPodGWs contains a map of all pods serving as exgws as well as their
// exgw IPs
routingExternalPodGWs map[string]gatewayInfo
// The UUID of the namespace-wide port group that contains all the pods in the namespace.
portGroupUUID string
multicastEnabled bool
// If not empty, then it has to be set to a logging a severity level, e.g. "notice", "alert", etc
aclLogging ACLLoggingLevels
// Per-namespace port group default deny UUIDs
portGroupIngressDenyUUID string // Port group UUID for ingress deny rule
portGroupIngressDenyName string // Port group Name for ingress deny rule
portGroupEgressDenyUUID string // Port group UUID for egress deny rule
portGroupEgressDenyName string // Port group Name for egress deny rule
}
// Controller structure is the object which holds the controls for starting
// and reacting upon the watched resources (e.g. pods, endpoints)
type Controller struct {
client clientset.Interface
kube kube.Interface
watchFactory *factory.WatchFactory
egressFirewallHandler *factory.Handler
stopChan <-chan struct{}
// FIXME DUAL-STACK - Make IP Allocators more dual-stack friendly
masterSubnetAllocator *subnetallocator.SubnetAllocator
nodeLocalNatIPv4Allocator *ipallocator.Range
nodeLocalNatIPv6Allocator *ipallocator.Range
hoMaster *hocontroller.MasterController
// All the uuid related to global load balancers
clusterLBsUUIDs []string
SCTPSupport bool
// For TCP, UDP, and SCTP type traffic, cache OVN load-balancers used for the
// cluster's east-west traffic.
loadbalancerClusterCache map[kapi.Protocol]string
// A cache of all logical switches seen by the watcher and their subnets
lsManager *logicalSwitchManager
// A cache of all logical ports known to the controller
logicalPortCache *portCache
// Info about known namespaces. You must use oc.getNamespaceLocked() or
// oc.waitForNamespaceLocked() to read this map, and oc.createNamespaceLocked()
// or oc.deleteNamespaceLocked() to modify it. namespacesMutex is only held
// from inside those functions.
namespaces map[string]*namespaceInfo
namespacesMutex sync.Mutex
// An address set factory that creates address sets
addressSetFactory addressset.AddressSetFactory
// Port group for all cluster logical switch ports
clusterPortGroupUUID string
// Port group for all node logical switch ports connected to the cluster
// logical router
clusterRtrPortGroupUUID string
// For each logical port, the number of network policies that want
// to add a ingress deny rule.
lspIngressDenyCache map[string]int
// For each logical port, the number of network policies that want
// to add a egress deny rule.
lspEgressDenyCache map[string]int
// A mutex for lspIngressDenyCache and lspEgressDenyCache
lspMutex *sync.Mutex
// Supports multicast?
multicastSupport bool
// Controller used for programming OVN for egress IP
eIPC egressIPController
// Controller used to handle services
svcController *svccontroller.Controller
egressFirewallDNS *EgressDNS
// Is ACL logging enabled while configuring meters?
aclLoggingEnabled bool
joinSwIPManager *joinSwitchIPManager
// event recorder used to post events to k8s
recorder record.EventRecorder
// go-ovn northbound client interface
ovnNBClient goovn.Client
// go-ovn southbound client interface
ovnSBClient goovn.Client
// v4HostSubnetsUsed keeps track of number of v4 subnets currently assigned to nodes
v4HostSubnetsUsed float64
// v6HostSubnetsUsed keeps track of number of v6 subnets currently assigned to nodes
v6HostSubnetsUsed float64
// Map of pods that need to be retried, and the timestamp of when they last failed
retryPods map[types.UID]retryEntry
retryPodsLock sync.Mutex
}
type retryEntry struct {
pod *kapi.Pod
timeStamp time.Time
}
const (
// TCP is the constant string for the string "TCP"
TCP = "TCP"
// UDP is the constant string for the string "UDP"
UDP = "UDP"
// SCTP is the constant string for the string "SCTP"
SCTP = "SCTP"
)
func GetIPFullMask(ip string) string {
const (
// IPv4FullMask is the maximum prefix mask for an IPv4 address
IPv4FullMask = "/32"
// IPv6FullMask is the maxiumum prefix mask for an IPv6 address
IPv6FullMask = "/128"
)
if utilnet.IsIPv6(net.ParseIP(ip)) {
return IPv6FullMask
}
return IPv4FullMask
}
// NewOvnController creates a new OVN controller for creating logical network
// infrastructure and policy
func NewOvnController(ovnClient *util.OVNClientset, wf *factory.WatchFactory,
stopChan <-chan struct{}, addressSetFactory addressset.AddressSetFactory, ovnNBClient goovn.Client, ovnSBClient goovn.Client, recorder record.EventRecorder) *Controller {
if addressSetFactory == nil {
addressSetFactory = addressset.NewOvnAddressSetFactory()
}
return &Controller{
client: ovnClient.KubeClient,
kube: &kube.Kube{
KClient: ovnClient.KubeClient,
EIPClient: ovnClient.EgressIPClient,
EgressFirewallClient: ovnClient.EgressFirewallClient,
},
watchFactory: wf,
stopChan: stopChan,
masterSubnetAllocator: subnetallocator.NewSubnetAllocator(),
nodeLocalNatIPv4Allocator: &ipallocator.Range{},
nodeLocalNatIPv6Allocator: &ipallocator.Range{},
lsManager: newLogicalSwitchManager(),
logicalPortCache: newPortCache(stopChan),
namespaces: make(map[string]*namespaceInfo),
namespacesMutex: sync.Mutex{},
addressSetFactory: addressSetFactory,
lspIngressDenyCache: make(map[string]int),
lspEgressDenyCache: make(map[string]int),
lspMutex: &sync.Mutex{},
eIPC: egressIPController{
assignmentRetryMutex: &sync.Mutex{},
assignmentRetry: make(map[string]bool),
namespaceHandlerMutex: &sync.Mutex{},
namespaceHandlerCache: make(map[string]factory.Handler),
podHandlerMutex: &sync.Mutex{},
podHandlerCache: make(map[string]factory.Handler),
allocatorMutex: &sync.Mutex{},
allocator: make(map[string]*egressNode),
},
loadbalancerClusterCache: make(map[kapi.Protocol]string),
multicastSupport: config.EnableMulticast,
aclLoggingEnabled: true,
joinSwIPManager: nil,
retryPods: make(map[types.UID]retryEntry),
recorder: recorder,
ovnNBClient: ovnNBClient,
ovnSBClient: ovnSBClient,
clusterLBsUUIDs: make([]string, 0),
}
}
// Run starts the actual watching.
func (oc *Controller) Run(wg *sync.WaitGroup, nodeName string) error {
oc.syncPeriodic()
klog.Infof("Starting all the Watchers...")
start := time.Now()
// WatchNamespaces() should be started first because it has no other
// dependencies, and WatchNodes() depends on it
oc.WatchNamespaces()
// Services must be started before nodes for handling new node's service sync
if err := oc.StartServiceController(wg, true); err != nil {
return err
}
// WatchNodes must be started next because it creates the node switch
// which most other watches depend on.
// https://github.com/ovn-org/ovn-kubernetes/pull/859
oc.WatchNodes()
oc.WatchPods()
// WatchNetworkPolicy depends on WatchPods and WatchNamespaces
oc.WatchNetworkPolicy()
if config.OVNKubernetesFeature.EnableEgressIP {
oc.WatchEgressNodes()
oc.WatchEgressIP()
}
if config.OVNKubernetesFeature.EnableEgressFirewall {
var err error
oc.egressFirewallDNS, err = NewEgressDNS(oc.addressSetFactory, oc.stopChan)
if err != nil {
return err
}
oc.egressFirewallDNS.Run(egressFirewallDNSDefaultDuration)
oc.egressFirewallHandler = oc.WatchEgressFirewall()
}
klog.Infof("Completing all the Watchers took %v", time.Since(start))
if config.Kubernetes.OVNEmptyLbEvents {
klog.Infof("Starting unidling controller")
unidlingController := unidling.NewController(
oc.recorder,
oc.watchFactory.ServiceInformer(),
)
wg.Add(1)
go func() {
defer wg.Done()
unidlingController.Run(oc.stopChan)
}()
}
if oc.hoMaster != nil {
wg.Add(1)
go func() {
defer wg.Done()
oc.hoMaster.Run(oc.stopChan)
}()
}
// Master is fully running and resource handlers have synced, update Topology version in OVN
stdout, stderr, err := util.RunOVNNbctl("set", "logical_router", ovntypes.OVNClusterRouter,
fmt.Sprintf("external_ids:k8s-ovn-topo-version=%d", ovntypes.OvnCurrentTopologyVersion))
if err != nil {
klog.Errorf("Failed to set topology version in OVN, "+
"stdout: %q, stderr: %q, error: %v", stdout, stderr, err)
return err
}
// Update topology version on node
node, err := oc.kube.GetNode(nodeName)
if err != nil {
return fmt.Errorf("unable to get node: %s", nodeName)
}
err = oc.kube.SetAnnotationsOnNode(node, map[string]interface{}{ovntypes.OvnK8sTopoAnno: strconv.Itoa(ovntypes.OvnCurrentTopologyVersion)})
if err != nil {
return fmt.Errorf("failed to set topology annotation for node %s", node.Name)
}
return nil
}
// syncPeriodic adds a goroutine that periodically does some work
// right now there is only one ticker registered
// for syncNodesPeriodic which deletes chassis records from the sbdb
// every 5 minutes
func (oc *Controller) syncPeriodic() {
go func() {
nodeSyncTicker := time.NewTicker(5 * time.Minute)
for {
select {
case <-nodeSyncTicker.C:
oc.syncNodesPeriodic()
case <-oc.stopChan:
return
}
}
}()
}
func (oc *Controller) recordPodEvent(addErr error, pod *kapi.Pod) {
podRef, err := ref.GetReference(scheme.Scheme, pod)
if err != nil {
klog.Errorf("Couldn't get a reference to pod %s/%s to post an event: '%v'",
pod.Namespace, pod.Name, err)
} else {
klog.V(5).Infof("Posting a %s event for Pod %s/%s", kapi.EventTypeWarning, pod.Namespace, pod.Name)
oc.recorder.Eventf(podRef, kapi.EventTypeWarning, "ErrorAddingLogicalPort", addErr.Error())
}
}
// iterateRetryPods checks if any outstanding pods have been waiting for 60 seconds of last known failure
// then tries to re-add them if so
func (oc *Controller) iterateRetryPods() {
oc.retryPodsLock.Lock()
defer oc.retryPodsLock.Unlock()
now := time.Now()
for uid, podEntry := range oc.retryPods {
pod := podEntry.pod
podTimer := podEntry.timeStamp.Add(time.Minute)
if now.After(podTimer) {
podDesc := fmt.Sprintf("[%s/%s/%s]", pod.UID, pod.Namespace, pod.Name)
klog.Infof("%s retry pod setup", podDesc)
if oc.ensurePod(nil, pod, true) {
klog.Infof("%s pod setup successful", podDesc)
delete(oc.retryPods, uid)
} else {
klog.Infof("%s setup retry failed; will try again later", podDesc)
oc.retryPods[uid] = retryEntry{pod, time.Now()}
}
}
}
}
// checkAndDeleteRetryPod deletes a specific entry from the map, if it existed, returns true
func (oc *Controller) checkAndDeleteRetryPod(uid types.UID) bool {
oc.retryPodsLock.Lock()
defer oc.retryPodsLock.Unlock()
if _, ok := oc.retryPods[uid]; ok {
delete(oc.retryPods, uid)
return true
}
return false
}
// addRetryPod tracks a failed pod to retry later
func (oc *Controller) addRetryPod(pod *kapi.Pod) {
oc.retryPodsLock.Lock()
defer oc.retryPodsLock.Unlock()
oc.retryPods[pod.UID] = retryEntry{pod, time.Now()}
}
func exGatewayAnnotationsChanged(oldPod, newPod *kapi.Pod) bool {
return oldPod.Annotations[routingNamespaceAnnotation] != newPod.Annotations[routingNamespaceAnnotation] ||
oldPod.Annotations[routingNetworkAnnotation] != newPod.Annotations[routingNetworkAnnotation] ||
oldPod.Annotations[bfdAnnotation] != newPod.Annotations[bfdAnnotation]
}
func networkStatusAnnotationsChanged(oldPod, newPod *kapi.Pod) bool {
return oldPod.Annotations[nettypes.NetworkStatusAnnot] != newPod.Annotations[nettypes.NetworkStatusAnnot]
}
// ensurePod tries to set up a pod. It returns success or failure; failure
// indicates the pod should be retried later.
func (oc *Controller) ensurePod(oldPod, pod *kapi.Pod, addPort bool) bool {
// Try unscheduled pods later
if !util.PodScheduled(pod) {
return false
}
if util.PodWantsNetwork(pod) && addPort {
if err := oc.addLogicalPort(pod); err != nil {
klog.Errorf(err.Error())
oc.recordPodEvent(err, pod)
return false
}
} else {
if oldPod != nil && (exGatewayAnnotationsChanged(oldPod, pod) || networkStatusAnnotationsChanged(oldPod, pod)) {
// No matter if a pod is ovn networked, or host networked, we still need to check for exgw
// annotations. If the pod is ovn networked and is in update reschedule, addLogicalPort will take
// care of updating the exgw updates
oc.deletePodExternalGW(oldPod)
}
if err := oc.addPodExternalGW(pod); err != nil {
klog.Errorf(err.Error())
oc.recordPodEvent(err, pod)
return false
}
}
return true
}
// WatchPods starts the watching of Pod resource and calls back the appropriate handler logic
func (oc *Controller) WatchPods() {
go func() {
// track the retryPods map and every 30 seconds check if any pods need to be retried
utilwait.Until(oc.iterateRetryPods, 30*time.Second, oc.stopChan)
}()
start := time.Now()
oc.watchFactory.AddPodHandler(cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
pod := obj.(*kapi.Pod)
if !oc.ensurePod(nil, pod, true) {
oc.addRetryPod(pod)
}
},
UpdateFunc: func(old, newer interface{}) {
oldPod := old.(*kapi.Pod)
pod := newer.(*kapi.Pod)
if !oc.ensurePod(oldPod, pod, oc.checkAndDeleteRetryPod(pod.UID)) {
// add back the failed pod
oc.addRetryPod(pod)
return
}
},
DeleteFunc: func(obj interface{}) {
pod := obj.(*kapi.Pod)
oc.checkAndDeleteRetryPod(pod.UID)
if !util.PodWantsNetwork(pod) {
oc.deletePodExternalGW(pod)
return
}
// deleteLogicalPort will take care of removing exgw for ovn networked pods
oc.deleteLogicalPort(pod)
},
}, oc.syncPods)
klog.Infof("Bootstrapping existing pods and cleaning stale pods took %v", time.Since(start))
}
// WatchNetworkPolicy starts the watching of network policy resource and calls
// back the appropriate handler logic
func (oc *Controller) WatchNetworkPolicy() {
start := time.Now()
oc.watchFactory.AddPolicyHandler(cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
policy := obj.(*kapisnetworking.NetworkPolicy)
oc.addNetworkPolicy(policy)
},
UpdateFunc: func(old, newer interface{}) {
oldPolicy := old.(*kapisnetworking.NetworkPolicy)
newPolicy := newer.(*kapisnetworking.NetworkPolicy)
if !reflect.DeepEqual(oldPolicy, newPolicy) {
oc.deleteNetworkPolicy(oldPolicy)
oc.addNetworkPolicy(newPolicy)
}
},
DeleteFunc: func(obj interface{}) {
policy := obj.(*kapisnetworking.NetworkPolicy)
oc.deleteNetworkPolicy(policy)
},
}, oc.syncNetworkPolicies)
klog.Infof("Bootstrapping existing policies and cleaning stale policies took %v", time.Since(start))
}
// WatchEgressFirewall starts the watching of egressfirewall resource and calls
// back the appropriate handler logic
func (oc *Controller) WatchEgressFirewall() *factory.Handler {
return oc.watchFactory.AddEgressFirewallHandler(cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
egressFirewall := obj.(*egressfirewall.EgressFirewall).DeepCopy()
txn := util.NewNBTxn()
addErrors := oc.addEgressFirewall(egressFirewall, txn)
if addErrors != nil {
klog.Error(addErrors)
egressFirewall.Status.Status = egressFirewallAddError
} else {
_, stderr, err := txn.Commit()
if err != nil {
klog.Errorf("failed to commit db changes for egressFirewall in namespace %s stderr: %q, err: %+v", egressFirewall.Namespace, stderr, err)
egressFirewall.Status.Status = egressFirewallAddError
} else {
egressFirewall.Status.Status = egressFirewallAppliedCorrectly
}
}
err := oc.updateEgressFirewallWithRetry(egressFirewall)
if err != nil {
klog.Error(err)
}
},
UpdateFunc: func(old, newer interface{}) {
newEgressFirewall := newer.(*egressfirewall.EgressFirewall).DeepCopy()
oldEgressFirewall := old.(*egressfirewall.EgressFirewall)
if !reflect.DeepEqual(oldEgressFirewall.Spec, newEgressFirewall.Spec) {
txn := util.NewNBTxn()
errList := oc.updateEgressFirewall(oldEgressFirewall, newEgressFirewall, txn)
if errList != nil {
newEgressFirewall.Status.Status = egressFirewallUpdateError
klog.Error(errList)
} else {
_, stderr, err := txn.Commit()
if err != nil {
klog.Errorf("failed to commit db changes for egressFirewall in namespace %s stderr: %q, err: %+v", newEgressFirewall.Namespace, stderr, err)
newEgressFirewall.Status.Status = egressFirewallUpdateError
} else {
newEgressFirewall.Status.Status = egressFirewallAppliedCorrectly
}
}
err := oc.updateEgressFirewallWithRetry(newEgressFirewall)
if err != nil {
klog.Error(err)
}
}
},
DeleteFunc: func(obj interface{}) {
egressFirewall := obj.(*egressfirewall.EgressFirewall)
txn := util.NewNBTxn()
deleteErrors := oc.deleteEgressFirewall(egressFirewall, txn)
if deleteErrors != nil {
klog.Error(deleteErrors)
return
}
stdout, stderr, err := txn.Commit()
if err != nil {
klog.Errorf("failed to commit db changes for egressFirewall in namespace %s stdout: %q, stderr: %q, err: %+v", egressFirewall.Namespace, stdout, stderr, err)
}
},
}, oc.syncEgressFirewall)
}
// WatchEgressNodes starts the watching of egress assignable nodes and calls
// back the appropriate handler logic.
func (oc *Controller) WatchEgressNodes() {
nodeEgressLabel := util.GetNodeEgressLabel()
oc.watchFactory.AddNodeHandler(cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
node := obj.(*kapi.Node)
if err := oc.addNodeForEgress(node); err != nil {
klog.Error(err)
}
nodeLabels := node.GetLabels()
if _, hasEgressLabel := nodeLabels[nodeEgressLabel]; hasEgressLabel {
oc.setNodeEgressAssignable(node.Name, true)
if oc.isEgressNodeReady(node) {
oc.setNodeEgressReady(node.Name, true)
if oc.isEgressNodeReachable(node) {
oc.setNodeEgressReachable(node.Name, true)
if err := oc.addEgressNode(node); err != nil {
klog.Error(err)
}
}
}
}
},
UpdateFunc: func(old, new interface{}) {
oldNode := old.(*kapi.Node)
newNode := new.(*kapi.Node)
if err := oc.initEgressIPAllocator(newNode); err != nil {
klog.Error(err)
}
oldLabels := oldNode.GetLabels()
newLabels := newNode.GetLabels()
_, oldHadEgressLabel := oldLabels[nodeEgressLabel]
_, newHasEgressLabel := newLabels[nodeEgressLabel]
if !oldHadEgressLabel && !newHasEgressLabel {
return
}
if oldHadEgressLabel && !newHasEgressLabel {
klog.Infof("Node: %s has been un-labelled, deleting it from egress assignment", newNode.Name)
oc.setNodeEgressAssignable(oldNode.Name, false)
if err := oc.deleteEgressNode(oldNode); err != nil {
klog.Error(err)
}
return
}
isOldReady := oc.isEgressNodeReady(oldNode)
isNewReady := oc.isEgressNodeReady(newNode)
isNewReachable := oc.isEgressNodeReachable(newNode)
oc.setNodeEgressReady(newNode.Name, isNewReady)
oc.setNodeEgressReachable(newNode.Name, isNewReachable)
if !oldHadEgressLabel && newHasEgressLabel {
klog.Infof("Node: %s has been labelled, adding it for egress assignment", newNode.Name)
oc.setNodeEgressAssignable(newNode.Name, true)
if isNewReady && isNewReachable {
if err := oc.addEgressNode(newNode); err != nil {
klog.Error(err)
}
} else {
klog.Warningf("Node: %s has been labelled, but node is not ready and reachable, cannot use it for egress assignment", newNode.Name)
}
return
}
if isOldReady == isNewReady {
return
}
if !isNewReady {
klog.Warningf("Node: %s is not ready, deleting it from egress assignment", newNode.Name)
if err := oc.deleteEgressNode(newNode); err != nil {
klog.Error(err)
}
} else if isNewReady && isNewReachable {
klog.Infof("Node: %s is ready and reachable, adding it for egress assignment", newNode.Name)
if err := oc.addEgressNode(newNode); err != nil {
klog.Error(err)
}
}
},
DeleteFunc: func(obj interface{}) {
node := obj.(*kapi.Node)
if err := oc.deleteNodeForEgress(node); err != nil {
klog.Error(err)
}
nodeLabels := node.GetLabels()
if _, hasEgressLabel := nodeLabels[nodeEgressLabel]; hasEgressLabel {
if err := oc.deleteEgressNode(node); err != nil {
klog.Error(err)
}
}
},
}, oc.initClusterEgressPolicies)
}
// WatchEgressIP starts the watching of egressip resource and calls
// back the appropriate handler logic.
func (oc *Controller) WatchEgressIP() {
oc.watchFactory.AddEgressIPHandler(cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
eIP := obj.(*egressipv1.EgressIP).DeepCopy()
oc.eIPC.assignmentRetryMutex.Lock()
defer oc.eIPC.assignmentRetryMutex.Unlock()
if err := oc.addEgressIP(eIP); err != nil {
klog.Error(err)
}
if err := oc.updateEgressIPWithRetry(eIP); err != nil {
klog.Error(err)
}
},
UpdateFunc: func(old, new interface{}) {
oldEIP := old.(*egressipv1.EgressIP)
newEIP := new.(*egressipv1.EgressIP).DeepCopy()
if !reflect.DeepEqual(oldEIP.Spec, newEIP.Spec) {
if err := oc.deleteEgressIP(oldEIP); err != nil {
klog.Error(err)
}
newEIP.Status = egressipv1.EgressIPStatus{
Items: []egressipv1.EgressIPStatusItem{},
}
oc.eIPC.assignmentRetryMutex.Lock()
defer oc.eIPC.assignmentRetryMutex.Unlock()
if err := oc.addEgressIP(newEIP); err != nil {
klog.Error(err)
}
if err := oc.updateEgressIPWithRetry(newEIP); err != nil {
klog.Error(err)
}
}
},
DeleteFunc: func(obj interface{}) {
eIP := obj.(*egressipv1.EgressIP)
if err := oc.deleteEgressIP(eIP); err != nil {
klog.Error(err)
}
},
}, oc.syncEgressIPs)
}
// WatchNamespaces starts the watching of namespace resource and calls
// back the appropriate handler logic
func (oc *Controller) WatchNamespaces() {
start := time.Now()
oc.watchFactory.AddNamespaceHandler(cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
ns := obj.(*kapi.Namespace)
oc.AddNamespace(ns)
},
UpdateFunc: func(old, newer interface{}) {
oldNs, newNs := old.(*kapi.Namespace), newer.(*kapi.Namespace)
oc.updateNamespace(oldNs, newNs)
},
DeleteFunc: func(obj interface{}) {
ns := obj.(*kapi.Namespace)
oc.deleteNamespace(ns)
},
}, oc.syncNamespaces)
klog.Infof("Bootstrapping existing namespaces and cleaning stale namespaces took %v", time.Since(start))
}
func (oc *Controller) syncNodeGateway(node *kapi.Node, hostSubnets []*net.IPNet) error {
l3GatewayConfig, err := util.ParseNodeL3GatewayAnnotation(node)
if err != nil {
return err
}
if hostSubnets == nil {
hostSubnets, _ = util.ParseNodeHostSubnetAnnotation(node)
}
if l3GatewayConfig.Mode == config.GatewayModeDisabled {
if err := gatewayCleanup(node.Name); err != nil {
return fmt.Errorf("error cleaning up gateway for node %s: %v", node.Name, err)
}
if err := oc.joinSwIPManager.releaseJoinLRPIPs(node.Name); err != nil {
return err
}
} else if hostSubnets != nil {
var hostAddrs sets.String
if config.Gateway.Mode == config.GatewayModeShared {
hostAddrs, err = util.ParseNodeHostAddresses(node)
if err != nil {
return fmt.Errorf("failed to get host addresses for node: %s: %v", node.Name, err)
}
}
if err := oc.syncGatewayLogicalNetwork(node, l3GatewayConfig, hostSubnets, hostAddrs); err != nil {
return fmt.Errorf("error creating gateway for node %s: %v", node.Name, err)
}
}
return nil
}
// WatchNodes starts the watching of node resource and calls
// back the appropriate handler logic
func (oc *Controller) WatchNodes() {
var gatewaysFailed sync.Map
var mgmtPortFailed sync.Map
var addNodeFailed sync.Map
start := time.Now()
oc.watchFactory.AddNodeHandler(cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
node := obj.(*kapi.Node)
if noHostSubnet := noHostSubnet(node); noHostSubnet {
err := oc.lsManager.AddNoHostSubnetNode(node.Name)
if err != nil {
klog.Errorf("Error creating logical switch cache for node %s: %v", node.Name, err)
}
return
}
klog.V(5).Infof("Added event for Node %q", node.Name)
hostSubnets, err := oc.addNode(node)
if err != nil {
klog.Errorf("NodeAdd: error creating subnet for node %s: %v", node.Name, err)
addNodeFailed.Store(node.Name, true)
mgmtPortFailed.Store(node.Name, true)
gatewaysFailed.Store(node.Name, true)
return
}
err = oc.syncNodeManagementPort(node, hostSubnets)
if err != nil {
if !util.IsAnnotationNotSetError(err) {
klog.Warningf("Error creating management port for node %s: %v", node.Name, err)
}
mgmtPortFailed.Store(node.Name, true)
}
if err := oc.syncNodeGateway(node, hostSubnets); err != nil {
if !util.IsAnnotationNotSetError(err) {
klog.Warningf(err.Error())
}
gatewaysFailed.Store(node.Name, true)
}
},
UpdateFunc: func(old, new interface{}) {
oldNode := old.(*kapi.Node)
node := new.(*kapi.Node)
shouldUpdate, err := shouldUpdate(node, oldNode)
if err != nil {
klog.Errorf(err.Error())
}
if !shouldUpdate {
// the hostsubnet is not assigned by ovn-kubernetes
return
}
var hostSubnets []*net.IPNet
_, failed := addNodeFailed.Load(node.Name)
if failed {
hostSubnets, err = oc.addNode(node)
if err != nil {
klog.Errorf("NodeUpdate: error creating subnet for node %s: %v", node.Name, err)
return
}
addNodeFailed.Delete(node.Name)
}
_, failed = mgmtPortFailed.Load(node.Name)
if failed || macAddressChanged(oldNode, node) || nodeSubnetChanged(oldNode, node) {
err := oc.syncNodeManagementPort(node, hostSubnets)
if err != nil {
if !util.IsAnnotationNotSetError(err) {
klog.Errorf("Error updating management port for node %s: %v", node.Name, err)
}
mgmtPortFailed.Store(node.Name, true)
} else {
mgmtPortFailed.Delete(node.Name)
}
}
if nodeChassisChanged(oldNode, node) {
// delete stale chassis in SBDB if any
oc.deleteStaleNodeChassis(node)
}
oc.clearInitialNodeNetworkUnavailableCondition(oldNode, node)
_, failed = gatewaysFailed.Load(node.Name)
if failed || gatewayChanged(oldNode, node) || nodeSubnetChanged(oldNode, node) || hostAddressesChanged(oldNode, node) {
err := oc.syncNodeGateway(node, nil)
if err != nil {
if !util.IsAnnotationNotSetError(err) {
klog.Errorf(err.Error())
}
gatewaysFailed.Store(node.Name, true)
} else {
gatewaysFailed.Delete(node.Name)
}
}
},
DeleteFunc: func(obj interface{}) {
node := obj.(*kapi.Node)
klog.V(5).Infof("Delete event for Node %q. Removing the node from "+
"various caches", node.Name)
nodeSubnets, _ := util.ParseNodeHostSubnetAnnotation(node)
dnatSnatIPs, _ := util.ParseNodeLocalNatIPAnnotation(node)
oc.deleteNode(node.Name, nodeSubnets, dnatSnatIPs)
oc.lsManager.DeleteNode(node.Name)
addNodeFailed.Delete(node.Name)
mgmtPortFailed.Delete(node.Name)
gatewaysFailed.Delete(node.Name)
},
}, oc.syncNodes)
klog.Infof("Bootstrapping existing nodes and cleaning stale nodes took %v", time.Since(start))
}
// GetNetworkPolicyACLLogging retrieves ACL deny policy logging setting for the Namespace
func (oc *Controller) GetNetworkPolicyACLLogging(ns string) *ACLLoggingLevels {
nsInfo := oc.getNamespaceLocked(ns)
if nsInfo == nil {
return &ACLLoggingLevels{
Allow: "",
Deny: "",
}
}
defer nsInfo.Unlock()
return &nsInfo.aclLogging
}
// Verify if controller can support ACL logging and validate annotation
func (oc *Controller) aclLoggingCanEnable(annotation string, nsInfo *namespaceInfo) bool {
if !oc.aclLoggingEnabled || annotation == "" {
nsInfo.aclLogging.Deny = ""
nsInfo.aclLogging.Allow = ""
return false
}
var aclLevels ACLLoggingLevels
err := json.Unmarshal([]byte(annotation), &aclLevels)
if err != nil {
return false
}
okCnt := 0
for _, s := range []string{"alert", "warning", "notice", "info", "debug"} {
if aclLevels.Deny != "" && s == aclLevels.Deny {
nsInfo.aclLogging.Deny = aclLevels.Deny
okCnt++
}
if aclLevels.Allow != "" && s == aclLevels.Allow {
nsInfo.aclLogging.Allow = aclLevels.Allow
okCnt++
}
}
return okCnt > 0
}
// gatewayChanged() compares old annotations to new and returns true if something has changed.
func gatewayChanged(oldNode, newNode *kapi.Node) bool {
oldL3GatewayConfig, _ := util.ParseNodeL3GatewayAnnotation(oldNode)
l3GatewayConfig, _ := util.ParseNodeL3GatewayAnnotation(newNode)
return !reflect.DeepEqual(oldL3GatewayConfig, l3GatewayConfig)
}
// hostAddressesChanged compares old annotations to new and returns true if the something has changed.
func hostAddressesChanged(oldNode, newNode *kapi.Node) bool {
oldAddrs, _ := util.ParseNodeHostAddresses(oldNode)
Addrs, _ := util.ParseNodeHostAddresses(newNode)
return !oldAddrs.Equal(Addrs)
}
// macAddressChanged() compares old annotations to new and returns true if something has changed.
func macAddressChanged(oldNode, node *kapi.Node) bool {
oldMacAddress, _ := util.ParseNodeManagementPortMACAddress(oldNode)
macAddress, _ := util.ParseNodeManagementPortMACAddress(node)
return !bytes.Equal(oldMacAddress, macAddress)
}
func nodeSubnetChanged(oldNode, node *kapi.Node) bool {
oldSubnets, _ := util.ParseNodeHostSubnetAnnotation(oldNode)
newSubnets, _ := util.ParseNodeHostSubnetAnnotation(node)
return !reflect.DeepEqual(oldSubnets, newSubnets)
}
func nodeChassisChanged(oldNode, node *kapi.Node) bool {
oldChassis, _ := util.ParseNodeChassisIDAnnotation(oldNode)
newChassis, _ := util.ParseNodeChassisIDAnnotation(node)
return oldChassis != newChassis
}
// noHostSubnet() compares the no-hostsubenet-nodes flag with node labels to see if the node is manageing its
// own network.
func noHostSubnet(node *kapi.Node) bool {
if config.Kubernetes.NoHostSubnetNodes == nil {
return false
}
nodeSelector, _ := metav1.LabelSelectorAsSelector(config.Kubernetes.NoHostSubnetNodes)
return nodeSelector.Matches(labels.Set(node.Labels))
}
// shouldUpdate() determines if the ovn-kubernetes plugin should update the state of the node.
// ovn-kube should not perform an update if it does not assign a hostsubnet, or if you want to change