17069871161

Committed 19 Aug 2025 12:40PM UTC coverage: 42.059% (-3.4%) from 45.498%

Build # 17069871161

Build Type

push

github

Committed by

web-flow

Commit Message

upgrade Go from 1.23.4 to 1.25.0 (#2945)

* upgrade go to 1.25
* add minor version to be Go 1.25.0
* revert the Go version on README to keep the history of the release

Run Details

5 of 9 new or added lines in 7 files covered. (55.56%)

531 existing lines in 13 files now uncovered.

6493 of 15438 relevant lines covered (42.06%)

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Source File
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3.02

/pkg/controller/postgresql.go

package controller

import (
        "context"
        "encoding/json"
        "fmt"
        "reflect"
        "strings"
        "sync"
        "sync/atomic"
        "time"

        "github.com/sirupsen/logrus"

        v1 "k8s.io/api/core/v1"
        metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
        "k8s.io/apimachinery/pkg/types"
        "k8s.io/client-go/tools/cache"

        acidv1 "github.com/zalando/postgres-operator/pkg/apis/acid.zalan.do/v1"
        "github.com/zalando/postgres-operator/pkg/cluster"
        "github.com/zalando/postgres-operator/pkg/spec"
        "github.com/zalando/postgres-operator/pkg/util"
        "github.com/zalando/postgres-operator/pkg/util/k8sutil"
        "github.com/zalando/postgres-operator/pkg/util/ringlog"
)

func (c *Controller) clusterResync(stopCh <-chan struct{}, wg *sync.WaitGroup) {
        defer wg.Done()
        ticker := time.NewTicker(c.opConfig.ResyncPeriod)

        for {
                select {
                case <-ticker.C:
                        if err := c.clusterListAndSync(); err != nil {
                                c.logger.Errorf("could not list clusters: %v", err)
                        }
                case <-stopCh:
                        return
                }
        }
}

// clusterListFunc obtains a list of all PostgreSQL clusters
func (c *Controller) listClusters(options metav1.ListOptions) (*acidv1.PostgresqlList, error) {
        var pgList acidv1.PostgresqlList

        // TODO: use the SharedInformer cache instead of quering Kubernetes API directly.
        list, err := c.KubeClient.PostgresqlsGetter.Postgresqls(c.opConfig.WatchedNamespace).List(context.TODO(), options)
        if err != nil {
                c.logger.Errorf("could not list postgresql objects: %v", err)
        }
        if c.controllerID != "" {
                c.logger.Debugf("watch only clusters with controllerID %q", c.controllerID)
        }
        for _, pg := range list.Items {
                if pg.Error == "" && c.hasOwnership(&pg) {
                        pgList.Items = append(pgList.Items, pg)
                }
        }

        return &pgList, err
}

// clusterListAndSync lists all manifests and decides whether to run the sync or repair.
func (c *Controller) clusterListAndSync() error {
        var (
                err   error
                event EventType
        )

        currentTime := time.Now().Unix()
        timeFromPreviousSync := currentTime - atomic.LoadInt64(&c.lastClusterSyncTime)
        timeFromPreviousRepair := currentTime - atomic.LoadInt64(&c.lastClusterRepairTime)

        if timeFromPreviousSync >= int64(c.opConfig.ResyncPeriod.Seconds()) {
                event = EventSync
        } else if timeFromPreviousRepair >= int64(c.opConfig.RepairPeriod.Seconds()) {
                event = EventRepair
        }
        if event != "" {
                var list *acidv1.PostgresqlList
                if list, err = c.listClusters(metav1.ListOptions{ResourceVersion: "0"}); err != nil {
                        return err
                }
                c.queueEvents(list, event)
        } else {
                c.logger.Infof("not enough time passed since the last sync (%v seconds) or repair (%v seconds)",
                        timeFromPreviousSync, timeFromPreviousRepair)
        }
        return nil
}

// queueEvents queues a sync or repair event for every cluster with a valid manifest
func (c *Controller) queueEvents(list *acidv1.PostgresqlList, event EventType) {
        var activeClustersCnt, failedClustersCnt, clustersToRepair int
        for i, pg := range list.Items {
                // XXX: check the cluster status field instead
                if pg.Error != "" {
                        failedClustersCnt++
                        continue
                }
                activeClustersCnt++
                // check if that cluster needs repair
                if event == EventRepair {
                        if pg.Status.Success() {
                                continue
                        } else {
                                clustersToRepair++
                        }
                }
                c.queueClusterEvent(nil, &list.Items[i], event)
        }
        if len(list.Items) > 0 {
                if failedClustersCnt > 0 && activeClustersCnt == 0 {
                        c.logger.Infof("there are no clusters running. %d are in the failed state", failedClustersCnt)
                } else if failedClustersCnt == 0 && activeClustersCnt > 0 {
                        c.logger.Infof("there are %d clusters running", activeClustersCnt)
                } else {
                        c.logger.Infof("there are %d clusters running and %d are in the failed state", activeClustersCnt, failedClustersCnt)
                }
                if clustersToRepair > 0 {
                        c.logger.Infof("%d clusters are scheduled for a repair scan", clustersToRepair)
                }
        } else {
                c.logger.Infof("no clusters running")
        }
        if event == EventRepair || event == EventSync {
                atomic.StoreInt64(&c.lastClusterRepairTime, time.Now().Unix())
                if event == EventSync {
                        atomic.StoreInt64(&c.lastClusterSyncTime, time.Now().Unix())
                }
        }
}

func (c *Controller) acquireInitialListOfClusters() error {
        var (
                list        *acidv1.PostgresqlList
                err         error
                clusterName spec.NamespacedName
        )

        if list, err = c.listClusters(metav1.ListOptions{ResourceVersion: "0"}); err != nil {
                return err
        }
        c.logger.Debug("acquiring initial list of clusters")
        for _, pg := range list.Items {
                // XXX: check the cluster status field instead
                if pg.Error != "" {
                        continue
                }
                clusterName = util.NameFromMeta(pg.ObjectMeta)
                c.addCluster(c.logger, clusterName, &pg)
                c.logger.Debugf("added new cluster: %q", clusterName)
        }
        // initiate initial sync of all clusters.
        c.queueEvents(list, EventSync)
        return nil
}

func (c *Controller) addCluster(lg *logrus.Entry, clusterName spec.NamespacedName, pgSpec *acidv1.Postgresql) (*cluster.Cluster, error) {
        if c.opConfig.EnableTeamIdClusternamePrefix {
                if _, err := acidv1.ExtractClusterName(clusterName.Name, pgSpec.Spec.TeamID); err != nil {
                        c.KubeClient.SetPostgresCRDStatus(clusterName, acidv1.ClusterStatusInvalid)
                        return nil, err
                }
        }

        cl := cluster.New(c.makeClusterConfig(), c.KubeClient, *pgSpec, lg, c.eventRecorder)
        cl.Run(c.stopCh)
        teamName := strings.ToLower(cl.Spec.TeamID)

        defer c.clustersMu.Unlock()
        c.clustersMu.Lock()

        c.teamClusters[teamName] = append(c.teamClusters[teamName], clusterName)
        c.clusters[clusterName] = cl
        c.clusterLogs[clusterName] = ringlog.New(c.opConfig.RingLogLines)
        c.clusterHistory[clusterName] = ringlog.New(c.opConfig.ClusterHistoryEntries)

        return cl, nil
}

func (c *Controller) processEvent(event ClusterEvent) {
        var clusterName spec.NamespacedName
        var clHistory ringlog.RingLogger
        var err error

        lg := c.logger.WithField("worker", event.WorkerID)

        if event.EventType == EventAdd || event.EventType == EventSync || event.EventType == EventRepair {
                clusterName = util.NameFromMeta(event.NewSpec.ObjectMeta)
        } else {
                clusterName = util.NameFromMeta(event.OldSpec.ObjectMeta)
        }
        lg = lg.WithField("cluster-name", clusterName)

        c.clustersMu.RLock()
        cl, clusterFound := c.clusters[clusterName]
        if clusterFound {
                clHistory = c.clusterHistory[clusterName]
        }
        c.clustersMu.RUnlock()

        defer c.curWorkerCluster.Store(event.WorkerID, nil)

        if event.EventType == EventRepair {
                runRepair, lastOperationStatus := cl.NeedsRepair()
                if !runRepair {
                        lg.Debugf("observed cluster status %s, repair is not required", lastOperationStatus)
                        return
                }
                lg.Debugf("observed cluster status %s, running sync scan to repair the cluster", lastOperationStatus)
                event.EventType = EventSync
        }

        if event.EventType == EventAdd || event.EventType == EventUpdate || event.EventType == EventSync {
                // handle deprecated parameters by possibly assigning their values to the new ones.
                if event.OldSpec != nil {
                        c.mergeDeprecatedPostgreSQLSpecParameters(&event.OldSpec.Spec)
                }
                if event.NewSpec != nil {
                        c.warnOnDeprecatedPostgreSQLSpecParameters(&event.NewSpec.Spec)
                        c.mergeDeprecatedPostgreSQLSpecParameters(&event.NewSpec.Spec)
                }

                if err = c.submitRBACCredentials(event); err != nil {
                        c.logger.Warnf("pods and/or Patroni may misfunction due to the lack of permissions: %v", err)
                }

        }

        switch event.EventType {
        case EventAdd:
                if clusterFound {
                        lg.Infof("received add event for already existing Postgres cluster")
                        return
                }

                lg.Infof("creating a new Postgres cluster")

                cl, err = c.addCluster(lg, clusterName, event.NewSpec)
                if err != nil {
                        lg.Errorf("creation of cluster is blocked: %v", err)
                        return
                }

                c.curWorkerCluster.Store(event.WorkerID, cl)

                err = cl.Create()
                if err != nil {
                        cl.Status = acidv1.PostgresStatus{PostgresClusterStatus: acidv1.ClusterStatusInvalid}
                        cl.Error = fmt.Sprintf("could not create cluster: %v", err)
                        lg.Error(cl.Error)
                        c.eventRecorder.Eventf(cl.GetReference(), v1.EventTypeWarning, "Create", "%v", cl.Error)
                        return
                }

                lg.Infoln("cluster has been created")
        case EventUpdate:
                lg.Infoln("update of the cluster started")

                if !clusterFound {
                        lg.Warningln("cluster does not exist")
                        return
                }
                c.curWorkerCluster.Store(event.WorkerID, cl)
                err = cl.Update(event.OldSpec, event.NewSpec)
                if err != nil {
                        cl.Error = fmt.Sprintf("could not update cluster: %v", err)
                        lg.Error(cl.Error)

                        return
                }
                cl.Error = ""
                lg.Infoln("cluster has been updated")

                clHistory.Insert(&spec.Diff{
                        EventTime:   event.EventTime,
                        ProcessTime: time.Now(),
                        Diff:        util.Diff(event.OldSpec, event.NewSpec),
                })
        case EventDelete:
                if !clusterFound {
                        lg.Errorf("unknown cluster: %q", clusterName)
                        return
                }

                teamName := strings.ToLower(cl.Spec.TeamID)
                c.curWorkerCluster.Store(event.WorkerID, cl)

                // when using finalizers the deletion already happened
                if c.opConfig.EnableFinalizers == nil || !*c.opConfig.EnableFinalizers {
                        lg.Infoln("deletion of the cluster started")
                        if err := cl.Delete(); err != nil {
                                cl.Error = fmt.Sprintf("could not delete cluster: %v", err)
                                c.eventRecorder.Eventf(cl.GetReference(), v1.EventTypeWarning, "Delete", "%v", cl.Error)
                        }
                }

                func() {
                        defer c.clustersMu.Unlock()
                        c.clustersMu.Lock()

                        delete(c.clusters, clusterName)
                        delete(c.clusterLogs, clusterName)
                        delete(c.clusterHistory, clusterName)
                        for i, val := range c.teamClusters[teamName] {
                                if val == clusterName {
                                        copy(c.teamClusters[teamName][i:], c.teamClusters[teamName][i+1:])
                                        c.teamClusters[teamName][len(c.teamClusters[teamName])-1] = spec.NamespacedName{}
                                        c.teamClusters[teamName] = c.teamClusters[teamName][:len(c.teamClusters[teamName])-1]
                                        break
                                }
                        }
                }()

                lg.Infof("cluster has been deleted")
        case EventSync:
                lg.Infof("syncing of the cluster started")

                // no race condition because a cluster is always processed by single worker
                if !clusterFound {
                        cl, err = c.addCluster(lg, clusterName, event.NewSpec)
                        if err != nil {
                                lg.Errorf("syncing of cluster is blocked: %v", err)
                                return
                        }
                }

                c.curWorkerCluster.Store(event.WorkerID, cl)

                // has this cluster been marked as deleted already, then we shall start cleaning up
                if !cl.ObjectMeta.DeletionTimestamp.IsZero() {
                        lg.Infof("cluster has a DeletionTimestamp of %s, starting deletion now.", cl.ObjectMeta.DeletionTimestamp.Format(time.RFC3339))
                        if err = cl.Delete(); err != nil {
                                cl.Error = fmt.Sprintf("error deleting cluster and its resources: %v", err)
                                c.eventRecorder.Eventf(cl.GetReference(), v1.EventTypeWarning, "Delete", "%v", cl.Error)
                                lg.Error(cl.Error)
                                return
                        }
                } else {
                        if err = cl.Sync(event.NewSpec); err != nil {
                                cl.Error = fmt.Sprintf("could not sync cluster: %v", err)
                                c.eventRecorder.Eventf(cl.GetReference(), v1.EventTypeWarning, "Sync", "%v", cl.Error)
                                lg.Error(cl.Error)
                                return
                        }
                        lg.Infof("cluster has been synced")
                }
                cl.Error = ""
        }
}

func (c *Controller) processClusterEventsQueue(idx int, stopCh <-chan struct{}, wg *sync.WaitGroup) {
        defer wg.Done()

        go func() {
                <-stopCh
                c.clusterEventQueues[idx].Close()
        }()

        for {
                obj, err := c.clusterEventQueues[idx].Pop(cache.PopProcessFunc(func(interface{}, bool) error { return nil }))
                if err != nil {
                        if err == cache.ErrFIFOClosed {
                                return
                        }
                        c.logger.Errorf("error when processing cluster events queue: %v", err)
                        continue
                }
                event, ok := obj.(ClusterEvent)
                if !ok {
                        c.logger.Errorf("could not cast to ClusterEvent")
                }

                c.processEvent(event)
        }
}

func (c *Controller) warnOnDeprecatedPostgreSQLSpecParameters(spec *acidv1.PostgresSpec) {

        deprecate := func(deprecated, replacement string) {
                c.logger.Warningf("parameter %q is deprecated. Consider setting %q instead", deprecated, replacement)
        }

        if spec.UseLoadBalancer != nil {
                deprecate("useLoadBalancer", "enableMasterLoadBalancer")
        }
        if spec.ReplicaLoadBalancer != nil {
                deprecate("replicaLoadBalancer", "enableReplicaLoadBalancer")
        }

        if (spec.UseLoadBalancer != nil || spec.ReplicaLoadBalancer != nil) &&
                (spec.EnableReplicaLoadBalancer != nil || spec.EnableMasterLoadBalancer != nil) {
                c.logger.Warnf("both old and new load balancer parameters are present in the manifest, ignoring old ones")
        }
}

// mergeDeprecatedPostgreSQLSpecParameters modifies the spec passed to the cluster by setting current parameter
// values from the obsolete ones. Note: while the spec that is modified is a copy made in queueClusterEvent, it is
// still a shallow copy, so be extra careful not to modify values pointer fields point to, but copy them instead.
func (c *Controller) mergeDeprecatedPostgreSQLSpecParameters(spec *acidv1.PostgresSpec) *acidv1.PostgresSpec {
        if (spec.UseLoadBalancer != nil || spec.ReplicaLoadBalancer != nil) &&
                (spec.EnableReplicaLoadBalancer == nil && spec.EnableMasterLoadBalancer == nil) {
                if spec.UseLoadBalancer != nil {
                        spec.EnableMasterLoadBalancer = new(bool)
                        *spec.EnableMasterLoadBalancer = *spec.UseLoadBalancer
                }
                if spec.ReplicaLoadBalancer != nil {
                        spec.EnableReplicaLoadBalancer = new(bool)
                        *spec.EnableReplicaLoadBalancer = *spec.ReplicaLoadBalancer
                }
        }
        spec.ReplicaLoadBalancer = nil
        spec.UseLoadBalancer = nil

        return spec
}

func (c *Controller) queueClusterEvent(informerOldSpec, informerNewSpec *acidv1.Postgresql, eventType EventType) {
        var (
                uid          types.UID
                clusterName  spec.NamespacedName
                clusterError string
        )

        if informerOldSpec != nil { //update, delete
                uid = informerOldSpec.GetUID()
                clusterName = util.NameFromMeta(informerOldSpec.ObjectMeta)

                // user is fixing previously incorrect spec
                if eventType == EventUpdate && informerNewSpec.Error == "" && informerOldSpec.Error != "" {
                        eventType = EventSync
                }

                // set current error to be one of the new spec if present
                if informerNewSpec != nil {
                        clusterError = informerNewSpec.Error
                } else {
                        clusterError = informerOldSpec.Error
                }
        } else { //add, sync
                uid = informerNewSpec.GetUID()
                clusterName = util.NameFromMeta(informerNewSpec.ObjectMeta)
                clusterError = informerNewSpec.Error
        }

        if eventType == EventDelete {
                // when owner references are used operator cannot block deletion
                if c.opConfig.EnableOwnerReferences == nil || !*c.opConfig.EnableOwnerReferences {
                        // only allow deletion if delete annotations are set and conditions are met
                        if err := c.meetsClusterDeleteAnnotations(informerOldSpec); err != nil {
                                c.logger.WithField("cluster-name", clusterName).Warnf(
                                        "ignoring %q event for cluster %q - manifest does not fulfill delete requirements: %s", eventType, clusterName, err)
                                c.logger.WithField("cluster-name", clusterName).Warnf(
                                        "please, recreate Postgresql resource %q and set annotations to delete properly", clusterName)
                                if currentManifest, marshalErr := json.Marshal(informerOldSpec); marshalErr != nil {
                                        c.logger.WithField("cluster-name", clusterName).Warnf("could not marshal current manifest:\n%+v", informerOldSpec)
                                } else {
                                        c.logger.WithField("cluster-name", clusterName).Warnf("%s\n", string(currentManifest))
                                }
                                return
                        }
                }
        }

        if clusterError != "" && eventType != EventDelete {
                c.logger.WithField("cluster-name", clusterName).Debugf("skipping %q event for the invalid cluster: %s", eventType, clusterError)

                switch eventType {
                case EventAdd:
                        c.KubeClient.SetPostgresCRDStatus(clusterName, acidv1.ClusterStatusAddFailed)
                        c.eventRecorder.Eventf(c.GetReference(informerNewSpec), v1.EventTypeWarning, "Create", "%v", clusterError)
                case EventUpdate:
                        c.KubeClient.SetPostgresCRDStatus(clusterName, acidv1.ClusterStatusUpdateFailed)
                        c.eventRecorder.Eventf(c.GetReference(informerNewSpec), v1.EventTypeWarning, "Update", "%v", clusterError)
                default:
                        c.KubeClient.SetPostgresCRDStatus(clusterName, acidv1.ClusterStatusSyncFailed)
                        c.eventRecorder.Eventf(c.GetReference(informerNewSpec), v1.EventTypeWarning, "Sync", "%v", clusterError)
                }

                return
        }

        // Don't pass the spec directly from the informer, since subsequent modifications of it would be reflected
        // in the informer internal state, making it incoherent with the actual Kubernetes object (and, as a side
        // effect, the modified state will be returned together with subsequent events).

        workerID := c.clusterWorkerID(clusterName)
        clusterEvent := ClusterEvent{
                EventTime: time.Now(),
                EventType: eventType,
                UID:       uid,
                OldSpec:   informerOldSpec.Clone(),
                NewSpec:   informerNewSpec.Clone(),
                WorkerID:  workerID,
        }

        lg := c.logger.WithField("worker", workerID).WithField("cluster-name", clusterName)
        if err := c.clusterEventQueues[workerID].Add(clusterEvent); err != nil {
                lg.Errorf("error while queueing cluster event: %v", clusterEvent)
        }
        lg.Infof("%s event has been queued", eventType)

        if eventType != EventDelete {
                return
        }
        // A delete event discards all prior requests for that cluster.
        for _, evType := range []EventType{EventAdd, EventSync, EventUpdate, EventRepair} {
                obj, exists, err := c.clusterEventQueues[workerID].GetByKey(queueClusterKey(evType, uid))
                if err != nil {
                        lg.Warningf("could not get event from the queue: %v", err)
                        continue
                }

                if !exists {
                        continue
                }

                err = c.clusterEventQueues[workerID].Delete(obj)
                if err != nil {
                        lg.Warningf("could not delete event from the queue: %v", err)
                } else {
                        lg.Debugf("event %s has been discarded for the cluster", evType)
                }
        }
}

func (c *Controller) postgresqlAdd(obj interface{}) {
        pg := c.postgresqlCheck(obj)
        if pg != nil {
                // We will not get multiple Add events for the same cluster
                c.queueClusterEvent(nil, pg, EventAdd)
        }
}

func (c *Controller) postgresqlUpdate(prev, cur interface{}) {
        pgOld := c.postgresqlCheck(prev)
        pgNew := c.postgresqlCheck(cur)
        if pgOld != nil && pgNew != nil {
                // Avoid the inifinite recursion for status updates
                if reflect.DeepEqual(pgOld.Spec, pgNew.Spec) {
                        if reflect.DeepEqual(pgNew.Annotations, pgOld.Annotations) {
                                return
                        }
                }
                c.queueClusterEvent(pgOld, pgNew, EventUpdate)
        }
}

func (c *Controller) postgresqlDelete(obj interface{}) {
        pg := c.postgresqlCheck(obj)
        if pg != nil {
                c.queueClusterEvent(pg, nil, EventDelete)
        }
}

func (c *Controller) postgresqlCheck(obj interface{}) *acidv1.Postgresql {
        pg, ok := obj.(*acidv1.Postgresql)
        if !ok {
                c.logger.Errorf("could not cast to postgresql spec")
                return nil
        }
        if !c.hasOwnership(pg) {
                return nil
        }
        return pg
}

/*
Ensures the pod service account and role bindings exists in a namespace
before a PG cluster is created there so that a user does not have to deploy
these credentials manually.  StatefulSets require the service account to
create pods; Patroni requires relevant RBAC bindings to access endpoints
or config maps.

The operator does not sync accounts/role bindings after creation.
*/
func (c *Controller) submitRBACCredentials(event ClusterEvent) error {

        namespace := event.NewSpec.GetNamespace()

        if err := c.createPodServiceAccount(namespace); err != nil {
                return fmt.Errorf("could not create pod service account %q : %v", c.opConfig.PodServiceAccountName, err)
        }

        if err := c.createRoleBindings(namespace); err != nil {
                return fmt.Errorf("could not create role binding %q : %v", c.PodServiceAccountRoleBinding.Name, err)
        }
        return nil
}

func (c *Controller) createPodServiceAccount(namespace string) error {

        podServiceAccountName := c.opConfig.PodServiceAccountName
        _, err := c.KubeClient.ServiceAccounts(namespace).Get(context.TODO(), podServiceAccountName, metav1.GetOptions{})
        if k8sutil.ResourceNotFound(err) {

                c.logger.Infof("creating pod service account %q in the %q namespace", podServiceAccountName, namespace)

                // get a separate copy of service account
                // to prevent a race condition when setting a namespace for many clusters
                sa := *c.PodServiceAccount
                if _, err = c.KubeClient.ServiceAccounts(namespace).Create(context.TODO(), &sa, metav1.CreateOptions{}); err != nil {
                        return fmt.Errorf("cannot deploy the pod service account %q defined in the configuration to the %q namespace: %v", podServiceAccountName, namespace, err)
                }

                c.logger.Infof("successfully deployed the pod service account %q to the %q namespace", podServiceAccountName, namespace)
        } else if k8sutil.ResourceAlreadyExists(err) {
                return nil
        }

        return err
}

func (c *Controller) createRoleBindings(namespace string) error {

        podServiceAccountName := c.opConfig.PodServiceAccountName
        podServiceAccountRoleBindingName := c.PodServiceAccountRoleBinding.Name

        _, err := c.KubeClient.RoleBindings(namespace).Get(context.TODO(), podServiceAccountRoleBindingName, metav1.GetOptions{})
        if k8sutil.ResourceNotFound(err) {

                c.logger.Infof("Creating the role binding %q in the %q namespace", podServiceAccountRoleBindingName, namespace)

                // get a separate copy of role binding
                // to prevent a race condition when setting a namespace for many clusters
                rb := *c.PodServiceAccountRoleBinding
                _, err = c.KubeClient.RoleBindings(namespace).Create(context.TODO(), &rb, metav1.CreateOptions{})
                if err != nil {
                        return fmt.Errorf("cannot bind the pod service account %q defined in the configuration to the cluster role in the %q namespace: %v", podServiceAccountName, namespace, err)
                }

                c.logger.Infof("successfully deployed the role binding for the pod service account %q to the %q namespace", podServiceAccountName, namespace)

        } else if k8sutil.ResourceAlreadyExists(err) {
                return nil
        }

        return err
}

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