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gc.go
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gc.go
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package bcc
import (
"context"
"fmt"
"net"
appv1 "k8s.io/api/apps/v1"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/selection"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/util/wait"
"github.com/baidubce/baiducloud-cce-cni-driver/pkg/apimachinery/networking"
networkingv1alpha1 "github.com/baidubce/baiducloud-cce-cni-driver/pkg/apis/networking/v1alpha1"
"github.com/baidubce/baiducloud-cce-cni-driver/pkg/bce/cloud"
ipamgeneric "github.com/baidubce/baiducloud-cce-cni-driver/pkg/eniipam/ipam"
"github.com/baidubce/baiducloud-cce-cni-driver/pkg/eniipam/util"
"github.com/baidubce/baiducloud-cce-cni-driver/pkg/generated/clientset/versioned"
"github.com/baidubce/baiducloud-cce-cni-driver/pkg/metric"
utilippool "github.com/baidubce/baiducloud-cce-cni-driver/pkg/nodeagent/util/ippool"
k8sutil "github.com/baidubce/baiducloud-cce-cni-driver/pkg/util/k8s"
"github.com/baidubce/baiducloud-cce-cni-driver/pkg/util/logger"
log "github.com/baidubce/baiducloud-cce-cni-driver/pkg/util/logger"
enisdk "github.com/baidubce/bce-sdk-go/services/eni"
)
func (ipam *IPAM) gc(stopCh <-chan struct{}) error {
err := wait.PollImmediateUntil(wait.Jitter(ipam.gcPeriod, 0.5), func() (bool, error) {
ctx := log.NewContext()
stsList, err := ipam.kubeInformer.Apps().V1().StatefulSets().Lister().List(labels.Everything())
if err != nil {
log.Errorf(ctx, "gc: error list sts in cluster: %v", err)
return false, nil
}
wepSelector, err := wepListerSelector()
if err != nil {
log.Errorf(ctx, "gc: error parsing requirement: %v", err)
return false, nil
}
wepList, err := ipam.crdInformer.Cce().V1alpha1().WorkloadEndpoints().Lister().List(wepSelector)
if err != nil {
log.Errorf(ctx, "gc: error list wep in cluster: %v", err)
return false, nil
}
// release wep if sts is deleted
ipam.gcDeletedSts(ctx, wepList)
// release wep if sts scale down
ipam.gcScaledDownSts(ctx, stsList)
// release non-sts wep if pod not found
ipam.gcLeakedPod(ctx, wepList)
ipam.gcLeakedIPPool(ctx)
ipam.gcLeakedIP(ctx)
ipam.gcDeletedNode(ctx)
return false, nil
}, stopCh)
if err != nil {
return err
}
return nil
}
func (ipam *IPAM) deletePrivateIP(ctx context.Context, privateIP string, eniID string) error {
ipam.bucket.Wait(1)
return ipam.cloud.DeletePrivateIP(ctx, privateIP, eniID)
}
func (ipam *IPAM) gcLeakedIP(ctx context.Context) error {
// list all pods
pods, err := ipam.kubeInformer.Core().V1().Pods().Lister().List(labels.Everything())
if err != nil {
log.Errorf(ctx, "gc: error list pods in cluster: %v", err)
return err
}
// list all weps
weps, err := ipam.crdInformer.Cce().V1alpha1().WorkloadEndpoints().Lister().WorkloadEndpoints(v1.NamespaceAll).List(labels.Everything())
if err != nil {
log.Errorf(ctx, "gc: failed to list wep: %v", err)
return err
}
var (
podIPSet = sets.NewString()
reservedIPSet = sets.NewString()
)
// store pod ip temporarily
for _, pod := range pods {
if !pod.Spec.HostNetwork && !k8sutil.IsPodFinished(pod) {
if pod.Status.PodIP != "" {
podIPSet.Insert(pod.Status.PodIP)
} else {
wep, err := ipam.crdInformer.Cce().V1alpha1().WorkloadEndpoints().Lister().WorkloadEndpoints(pod.Namespace).Get(pod.Name)
if err != nil {
podPhase := string(pod.Status.Phase)
if pod.DeletionTimestamp != nil && pod.Status.Reason == "NodeLost" {
podPhase = string(v1.PodUnknown)
} else if pod.DeletionTimestamp != nil {
podPhase = "Terminating"
}
log.Warningf(ctx, "gc: failed to get wep (%v/%v) with pod phase \"%v\": %v", pod.Namespace, pod.Name, podPhase, err)
continue
}
podIPSet.Insert(wep.Spec.IP)
log.Warningf(ctx, "gc: pod %v may be pending in the pod phase of pulling image, and the IP %v is not leaked", pod.Name, wep.Spec.IP)
}
}
}
// store ip which needs to be reused temporarily
for _, wep := range weps {
if networking.IsFixIPStatefulSetPodWep(wep) || networking.ISCustomReuseModeWEP(wep) {
reservedIPSet.Insert(wep.Spec.IP)
}
}
// build leaked ip cache
ipam.buildPossibleLeakedIPCache(ctx, podIPSet, reservedIPSet)
// prune leaked ip
ipam.pruneExpiredLeakedIP(ctx)
return nil
}
func (ipam *IPAM) buildPossibleLeakedIPCache(ctx context.Context, podIPSet, reservedIPSet sets.String) {
ipam.lock.Lock()
defer ipam.lock.Unlock()
var (
nodeName string
idleIPSet sets.String
)
ipam.eniCache.ForEachSubItem(func(key string, index int, eni *enisdk.Eni) bool {
if key != nodeName {
nodeName = key
idleIPs, err := ipam.datastore.GetUnassignedPrivateIPByNode(nodeName)
if err != nil {
log.Errorf(ctx, "gc: failed to get idle ips in datastore of node %v: %v", nodeName, err)
}
idleIPSet = sets.NewString(idleIPs...)
}
for _, ip := range eni.PrivateIpSet {
if !ip.Primary {
key := eniAndIPAddrKey{nodeName, eni.EniId, ip.PrivateIpAddress}
// ip not in pod and neither in sts wep, nor in idle pool
if !podIPSet.Has(ip.PrivateIpAddress) && !reservedIPSet.Has(ip.PrivateIpAddress) && !idleIPSet.Has(ip.PrivateIpAddress) {
if _, ok := ipam.possibleLeakedIPCache[key]; !ok {
ipam.possibleLeakedIPCache[key] = ipam.clock.Now()
log.Warningf(ctx, "gc: eni %v on node %v may has IP %v leaked", eni.EniId, nodeName, ip.PrivateIpAddress)
}
} else {
// if ip in pod, maybe a false positive
if _, ok := ipam.possibleLeakedIPCache[key]; ok {
delete(ipam.possibleLeakedIPCache, key)
log.Warningf(ctx, "gc: remove IP %v on eni %v from possibleLeakedIPCache", ip.PrivateIpAddress, eni.EniId)
} else {
// If the eni network card bound to the IP address changes,
// but the private IP of eni has not been synchronized yet,
// and the IP has been allocated to the new Pod, the garbage
// collection process for the IP should be cancelled
for tmpKey := range ipam.possibleLeakedIPCache {
if tmpKey.ipAddr == ip.PrivateIpAddress {
log.Warningf(ctx, "gc: cancel garbage collection of inuse IP %s which bound to eni %s ", ip.PrivateIpAddress, eni.EniId)
delete(ipam.possibleLeakedIPCache, tmpKey)
}
}
}
}
}
}
return true
})
}
func (ipam *IPAM) pruneExpiredLeakedIP(ctx context.Context) {
var (
leakedIPs []eniAndIPAddrKey
)
// prepare leaked ips for cleanup
ipam.lock.Lock()
for key, activeTime := range ipam.possibleLeakedIPCache {
if ipam.clock.Since(activeTime) > ipamgeneric.LeakedPrivateIPExpiredTimeout {
log.Infof(ctx, "gc: found leaked ip on eni %v: %v", key.eniID, key.ipAddr)
leakedIPs = append(leakedIPs, eniAndIPAddrKey{key.nodeName, key.eniID, key.ipAddr})
delete(ipam.possibleLeakedIPCache, key)
}
}
ipam.lock.Unlock()
// let's cleanup leaked ips
for _, tuple := range leakedIPs {
err := ipam.__tryDeleteIPByIPAndENI(ctx, tuple.nodeName, tuple.ipAddr, tuple.eniID, true)
if err != nil && !(cloud.IsErrorENIPrivateIPNotFound(err) || cloud.IsErrorENINotFound(err)) {
log.Errorf(ctx, "gc: stop delete leaked private IP %v on %v, try next round", tuple.ipAddr, tuple.eniID)
}
}
}
// https://cloud.baidu.com/doc/BCC/s/Vkaz2btvi
// When the BCC is released, the elastic network card will not be released.
func (ipam *IPAM) gcDeletedNode(ctx context.Context) error {
for _, node := range ipam.datastore.ListNodes() {
_, err := ipam.kubeInformer.Core().V1().Nodes().Lister().Get(node)
if err != nil {
if errors.IsNotFound(err) {
log.Infof(ctx, "gc: detect node %v has been deleted, clean up datastore", node)
// clean up datastore
delErr := ipam.datastore.DeleteNodeFromStore(node)
if delErr != nil {
log.Errorf(ctx, "gc: error delete node %v from datastore: %v", node, delErr)
}
ipam.lock.Lock()
if ch, ok := ipam.increasePoolEventChan[node]; ok {
delete(ipam.increasePoolEventChan, node)
close(ch)
log.Infof(ctx, "gc: clean up increase pool goroutine for node %v", node)
}
ipam.lock.Unlock()
continue
}
return err
}
}
return nil
}
// Delete privite ip at ipam and cloud vpc
// This method is usually used for the release of fixed IP
func (ipam *IPAM) tryDeleteIPByWep(ctx context.Context, wep *networkingv1alpha1.WorkloadEndpoint) error {
return ipam.__tryDeleteIPByIPAndENI(ctx, wep.Spec.Node, wep.Spec.IP, wep.Spec.ENIID, true)
}
func (ipam *IPAM) __tryDeleteIPByIPAndENI(ctx context.Context, nodeName, ip, eniID string, deleteAllocateCache bool) error {
err := ipam.__deleteIPFromCloud(ctx, ip, eniID)
if err != nil {
return err
}
ipam.__deleteIPFromCache(ctx, nodeName, ip, eniID, deleteAllocateCache)
return nil
}
func (ipam *IPAM) __deleteIPFromCloud(ctx context.Context, ip, eniID string) error {
err := ipam.deletePrivateIP(context.Background(), ip, eniID)
if err != nil {
log.Errorf(ctx, "__deleteIPFromCloud failed to delete private IP %v on %v: %v", ip, eniID, err)
} else {
log.Infof(ctx, "__deleteIPFromCloud delete private IP %v on %v successfully", ip, eniID)
}
if err != nil && !(cloud.IsErrorENIPrivateIPNotFound(err) || cloud.IsErrorENINotFound(err)) {
log.Errorf(ctx, "__deleteIPFromCloud stop delete ip, try next round")
return err
}
return nil
}
func (ipam *IPAM) __deleteIPFromCache(ctx context.Context, nodeName, ip, eniID string, deleteAllocateCache bool) {
ipam.datastore.Synchronized(func() error {
// delete ip from datastore
ipam.datastore.ReleasePodPrivateIPUnsafe(nodeName, eniID, ip)
ipam.datastore.DeletePrivateIPFromStoreUnsafe(nodeName, eniID, ip)
return nil
})
ipam.lock.Lock()
defer ipam.lock.Unlock()
if deleteAllocateCache {
ipam.allocated.Delete(ip)
}
ipam.decPrivateIPNumCache(eniID, true)
}
// tryDeleteWep Attempt to delete workload endpoint object
// This operation will release the cache of IPAM to related IP
// and the binding information of cloud to IP and Eni network cards
func (ipam *IPAM) tryDeleteIPAndWep(ctx context.Context, wep *networkingv1alpha1.WorkloadEndpoint) (err error) {
if wep.Spec.SubnetTopologyReference != "" {
err = ipam.tryDeleteCrossSubnetIPByWep(ctx, wep)
} else {
err = ipam.tryDeleteIPByWep(ctx, wep)
}
if err != nil {
log.Errorf(ctx, "gc: error delete private IP %v cross subnet for pod (%v %v): %v", wep.Spec.IP, wep.Namespace, wep.Name, err)
return err
}
ipam.removeIPFromLeakedCache(wep.Spec.Node, wep.Spec.ENIID, wep.Spec.IP)
return ipam.tryDeleteWep(ctx, wep)
}
// Delete workload objects from the k8s cluster
func (ipam *IPAM) tryDeleteWep(ctx context.Context, wep *networkingv1alpha1.WorkloadEndpoint) (err error) {
// remove finalizers
wep.Finalizers = nil
_, err = ipam.crdClient.CceV1alpha1().WorkloadEndpoints(wep.Namespace).Update(ctx, wep, metav1.UpdateOptions{})
if err != nil {
log.Errorf(ctx, "tryDeleteWep failed to update wep for pod (%v %v): %v", wep.Namespace, wep.Name, err)
return err
}
// delete wep
if err := ipam.crdClient.CceV1alpha1().WorkloadEndpoints(wep.Namespace).Delete(ctx, wep.Name, *metav1.NewDeleteOptions(0)); err != nil {
log.Errorf(ctx, "tryDeleteWep failed to delete wep for orphaned pod (%v %v): %v", wep.Namespace, wep.Name, err)
} else {
log.Infof(ctx, "tryDeleteWep delete wep for orphaned pod (%v %v) successfully", wep.Namespace, wep.Name)
}
return err
}
// Delete privite ip at ipam and cloud vpc
// This method is usually used for the release IP when cross subnet
func (ipam *IPAM) tryDeleteCrossSubnetIPByWep(ctx context.Context, wep *networkingv1alpha1.WorkloadEndpoint) error {
return ipam.__tryDeleteIPByIPAndENI(ctx, wep.Spec.Node, wep.Spec.IP, wep.Spec.ENIID, true)
}
// tryDeleteCrossSubnetIPRetainAllocateCache Unbind the IP from the Eni,
// but it should be released from the local cache,
// so as to prevent multiple stateful pods from being allocated
// to the same IP when fixed IP is allocated concurrently
func (ipam *IPAM) tryDeleteSubnetIPRetainAllocateCache(ctx context.Context, wep *networkingv1alpha1.WorkloadEndpoint) error {
return ipam.__tryDeleteIPByIPAndENI(ctx, wep.Spec.Node, wep.Spec.IP, wep.Spec.ENIID, false)
}
func (ipam *IPAM) tryReleaseIdleIP(ctx context.Context, nodeName, eniID string) error {
tempIP, err := ipam.datastore.AllocatePodPrivateIPByENI(nodeName, eniID)
if err != nil {
log.Errorf(ctx, "tryReleaseIdleIP allocate temp ip at node(%s) eni(%s) error: %v", nodeName, eniID, err)
return err
}
return ipam.__tryDeleteIPByIPAndENI(ctx, nodeName, tempIP, eniID, true)
}
func (ipam *IPAM) removeIPFromLeakedCache(node, eniID, ipAddr string) {
ipam.lock.Lock()
defer ipam.lock.Unlock()
delete(ipam.possibleLeakedIPCache, eniAndIPAddrKey{node, eniID, ipAddr})
}
func (ipam *IPAM) gcDeletedSts(ctx context.Context, wepList []*networkingv1alpha1.WorkloadEndpoint) error {
for _, wep := range wepList {
// only delete ip if sts requires fix ip
if !networking.IsFixIPStatefulSetPodWep(wep) {
continue
}
// don't delete ip if policy is Never
if wep.Spec.FixIPDeletePolicy == FixIPDeletePolicyNever {
continue
}
stsName := util.GetStsName(wep)
_, err := ipam.kubeInformer.Apps().V1().StatefulSets().Lister().StatefulSets(wep.Namespace).Get(stsName)
if err != nil {
if errors.IsNotFound(err) {
log.Infof(ctx, "gc: sts (%v %v) has been deleted, will release private IP and clean up orphaned wep ", wep.Namespace, stsName)
err = ipam.tryDeleteIPAndWep(ctx, wep)
if err != nil {
log.Errorf(ctx, "gc sts (%v %v) error %v", wep.Namespace, stsName, err)
}
} else {
log.Errorf(ctx, "gc: failed to get sts (%v %v): %v", wep.Namespace, stsName, err)
}
}
}
return nil
}
func (ipam *IPAM) gcScaledDownSts(ctx context.Context, stsList []*appv1.StatefulSet) error {
for _, sts := range stsList {
replicas := int(*sts.Spec.Replicas)
requirement, err := labels.NewRequirement(ipamgeneric.WepLabelStsOwnerKey, selection.Equals, []string{sts.Name})
if err != nil {
log.Errorf(ctx, "gc: error parsing requirement: %v", err)
return err
}
selector := labels.NewSelector().Add(*requirement)
// find wep whose owner is sts
weps, err := ipam.crdInformer.Cce().V1alpha1().WorkloadEndpoints().Lister().WorkloadEndpoints(sts.Namespace).List(selector)
if err != nil {
log.Errorf(ctx, "gc: failed to list wep with selector: %v: %v", selector.String(), err)
continue
}
if replicas < len(weps) {
podTemplateAnnotations := sts.Spec.Template.ObjectMeta.Annotations
if podTemplateAnnotations == nil || podTemplateAnnotations[StsPodAnnotationFixIPDeletePolicy] != FixIPDeletePolicyNever {
log.Infof(ctx, "gc: sts (%v %v) has scaled down from %v to %v, will release private IP and clean up orphaned wep", sts.Namespace, sts.Name, len(weps), replicas)
}
for _, wep := range weps {
// only delete ip if sts requires fix ip
if !networking.IsFixIPStatefulSetPodWep(wep) {
continue
}
// don't delete ip if policy is Never
if wep.Spec.FixIPDeletePolicy == FixIPDeletePolicyNever {
continue
}
index := util.GetStsPodIndex(wep)
if index < 0 || index < replicas {
continue
}
stsPodName := fmt.Sprintf("%s-%d", sts.Name, index)
log.Infof(ctx, "gc: try to release orphaned wep (%v %v)", sts.Namespace, stsPodName)
err = ipam.tryDeleteIPAndWep(ctx, wep)
if err != nil {
log.Errorf(ctx, "gc: try to release orphaned wep (%v %v) error %v", sts.Namespace, stsPodName, err)
}
}
}
}
return nil
}
func (ipam *IPAM) gcLeakedPod(ctx context.Context, wepList []*networkingv1alpha1.WorkloadEndpoint) error {
for _, wep := range wepList {
// only gc non-fix ip pod
if networking.IsFixIPStatefulSetPodWep(wep) {
continue
}
_, err := ipam.kubeInformer.Core().V1().Pods().Lister().Pods(wep.Namespace).Get(wep.Name)
if err != nil {
if errors.IsNotFound(err) {
msg := fmt.Sprintf("gc: try to release leaked wep (%v %v)", wep.Namespace, wep.Name)
log.Info(ctx, msg)
ipam.eventRecorder.Event(&v1.ObjectReference{
Kind: "wep",
Name: fmt.Sprintf("%v %v", wep.Namespace, wep.Name),
}, v1.EventTypeWarning, "PodLeaked", msg)
// mark wep phase to deleted
if markWEPPodDeletedPhase(ctx, ipam.crdClient, wep) {
continue
}
ipam.gcIPAndDeleteWep(ctx, wep)
} else {
log.Errorf(ctx, "gc: failed to get pod (%v %v): %v", wep.Namespace, wep.Name, err)
}
}
}
return nil
}
// markWEPPodDeletedPhase in custom IP reuse mode, if the pod is deleted,
// the IP will be deleted only when the maximum TTL period is exceeded.
func markWEPPodDeletedPhase(ctx context.Context, crdClient versioned.Interface, wep *networkingv1alpha1.WorkloadEndpoint) bool {
if networking.ISCustomReuseModeWEP(wep) {
// marking wep phase to pod deleted
if wep.Spec.Phase != networkingv1alpha1.WorkloadEndpointPhasePodDeleted {
newWep := wep.DeepCopy()
newWep.Spec.Phase = networkingv1alpha1.WorkloadEndpointPhasePodDeleted
newWep.Spec.UpdateAt = metav1.Now()
if newWep.Spec.Release == nil {
newWep.Spec.Release = &networkingv1alpha1.EndpointRelease{}
}
newWep.Spec.Release.PodDeletedTime = &newWep.Spec.UpdateAt
_, err := crdClient.CceV1alpha1().WorkloadEndpoints(newWep.Namespace).Update(ctx, newWep, metav1.UpdateOptions{})
if err != nil {
logger.Errorf(ctx, "mark WEP to PodDeleted phase failed %v", err)
}
logger.Infof(ctx, "mark WEP to PodDeleted phasesuccess")
}
}
return false
}
// gcWepAndIP and delete wep
// If the IP pool mode is used, when the idle IP is less than
// the maximum IP size, the IP address will be recycled for reuse.
// In other cases, the IP address will be deleted directly
//
// case 1. delete ip from cloud when cross subnet
// case 2. release privite ip to idle pool
// mark ip as unassigned in datastore, then delete wep
// case 3. delete ip from cloud
func (ipam *IPAM) gcIPAndDeleteWep(ctx context.Context, wep *networkingv1alpha1.WorkloadEndpoint) (err error) {
// delete ip of cross subnet
if wep.Spec.SubnetTopologyReference != "" {
_, err = ipam.crdInformer.Cce().V1alpha1().PodSubnetTopologySpreads().Lister().PodSubnetTopologySpreads(wep.Namespace).Get(wep.Spec.SubnetTopologyReference)
if err != nil && !errors.IsNotFound(err) {
return err
} else if err == nil && networking.ISCustomReuseModeWEP(wep) {
// should not delete wep with custom reuse mode
if !networking.NeedReleaseReuseModeWEP(wep) {
return nil
}
}
err = ipam.tryDeleteCrossSubnetIPByWep(ctx, wep)
if err != nil {
err = fmt.Errorf("delete private IP %v cross subnet for pod (%v %v) failed: %v", wep.Spec.IP, wep.Namespace, wep.Name, err)
logger.Errorf(ctx, "%v", err)
return
} else {
return ipam.deleteWepAndRemoveCahce(ctx, wep)
}
}
// release ip to pool
idle := ipam.idleIPNum(wep.Spec.Node)
if idle < ipam.idleIPPoolMaxSize {
log.Infof(ctx, "gc: try to only release wep for pod (%v %v) due to idle ip (%v) less than max idle pool", wep.Namespace, wep.Name, idle)
err = ipam.datastore.ReleasePodPrivateIP(wep.Spec.Node, wep.Spec.ENIID, wep.Spec.IP)
if err != nil {
log.Errorf(ctx, "gc: error releasing private IP %v from datastore for pod (%v %v): %v", wep.Spec.IP, wep.Namespace, wep.Name, err)
} else {
return ipam.deleteWepAndRemoveCahce(ctx, wep)
}
}
err = ipam.tryDeleteIPByWep(ctx, wep)
if err != nil {
err = fmt.Errorf("gc: error deleting private IP %v by wep (%v %v): %v", wep.Spec.IP, wep.Namespace, wep.Name, err)
log.Errorf(ctx, err.Error())
return
}
return ipam.deleteWepAndRemoveCahce(ctx, wep)
}
func (ipam *IPAM) deleteWepAndRemoveCahce(ctx context.Context, wep *networkingv1alpha1.WorkloadEndpoint) error {
metric.MultiEniMultiIPEniIPCount.WithLabelValues(metric.MetaInfo.ClusterID, metric.MetaInfo.VPCID, wep.Spec.SubnetID).Dec()
log.Infof(ctx, "release private IP %v for pod (%v %v) successfully", wep.Spec.IP, wep.Name, wep.Name)
ipam.allocated.Delete(wep.Spec.IP)
ipam.removeIPFromLeakedCache(wep.Spec.Node, wep.Spec.ENIID, wep.Spec.IP)
err := ipam.tryDeleteWep(ctx, wep)
if err != nil {
log.Errorf(ctx, "gc: try delete wep (%v %v) error: %v", wep.Namespace, wep.Name, err)
}
return err
}
func (ipam *IPAM) gcLeakedIPPool(ctx context.Context) error {
pools, err := ipam.crdInformer.Cce().V1alpha1().IPPools().Lister().List(labels.Everything())
if err != nil {
log.Errorf(ctx, "gc: failed to list ippools: %v", err)
return nil
}
for _, p := range pools {
nodeName := utilippool.GetNodeNameFromIPPoolName(p.Name)
_, err := ipam.kubeInformer.Core().V1().Nodes().Lister().Get(nodeName)
if err != nil && errors.IsNotFound(err) {
// We only delete ippool created by cni.
// To be compatible with prior version, nodeName in ip format is also considered as leaked one.
if p.Spec.CreationSource == ipamgeneric.IPPoolCreationSourceCNI || net.ParseIP(nodeName) != nil {
e := ipam.crdClient.CceV1alpha1().IPPools(p.Namespace).Delete(ctx, p.Name, *metav1.NewDeleteOptions(0))
if e != nil && !errors.IsNotFound(e) {
log.Errorf(ctx, "gc: failed to delete ippool %v: %v", p.Name, e)
} else {
log.Infof(ctx, "gc: delete leaked ippool %v successfully", p.Name)
}
}
}
}
return nil
}