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package perconaservermongodb
import (
"context"
"crypto/md5"
stderrors "errors"
"fmt"
"io"
"os"
"sort"
"strings"
"sync"
"sync/atomic"
"time"
v "github.com/hashicorp/go-version"
"github.com/pkg/errors"
"github.com/robfig/cron/v3"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
eventsv1 "k8s.io/api/events/v1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/rest"
"k8s.io/client-go/util/retry"
"sigs.k8s.io/controller-runtime/pkg/builder"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
"sigs.k8s.io/controller-runtime/pkg/client/config"
logf "sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"github.com/percona/percona-server-mongodb-operator/clientcmd"
api "github.com/percona/percona-server-mongodb-operator/pkg/apis/psmdb/v1"
k8sutils "github.com/percona/percona-server-mongodb-operator/pkg/k8s"
"github.com/percona/percona-server-mongodb-operator/pkg/naming"
"github.com/percona/percona-server-mongodb-operator/pkg/psmdb"
"github.com/percona/percona-server-mongodb-operator/pkg/psmdb/backup"
psmdbconfig "github.com/percona/percona-server-mongodb-operator/pkg/psmdb/config"
"github.com/percona/percona-server-mongodb-operator/pkg/psmdb/logcollector"
"github.com/percona/percona-server-mongodb-operator/pkg/psmdb/logcollector/logrotate"
"github.com/percona/percona-server-mongodb-operator/pkg/psmdb/pmm"
"github.com/percona/percona-server-mongodb-operator/pkg/psmdb/secret"
"github.com/percona/percona-server-mongodb-operator/pkg/psmdb/tls"
pkgSecret "github.com/percona/percona-server-mongodb-operator/pkg/secret"
"github.com/percona/percona-server-mongodb-operator/pkg/secret/vault"
"github.com/percona/percona-server-mongodb-operator/pkg/util"
"github.com/percona/percona-server-mongodb-operator/pkg/version"
)
const eventRegardingNameIndex = "regarding.name"
func eventRegardingNameIndexer(o client.Object) []string {
evt, ok := o.(*eventsv1.Event)
if !ok {
return nil
}
if evt.Regarding.Name == "" {
return nil
}
return []string{evt.Regarding.Name}
}
// Add creates a new PerconaServerMongoDB Controller and adds it to the Manager. The Manager will set fields on the Controller
// and Start it when the Manager is Started.
func Add(mgr manager.Manager) error {
r, err := newReconciler(mgr)
if err != nil {
return err
}
// the volume resize logic lists PVC events through the cached client,
// which requires the field to be indexed
err = mgr.GetFieldIndexer().IndexField(context.TODO(), &eventsv1.Event{}, eventRegardingNameIndex, eventRegardingNameIndexer)
if err != nil {
return errors.Wrapf(err, "index events by %s", eventRegardingNameIndex)
}
return add(mgr, r)
}
// newReconciler returns a new reconcile.Reconciler
func newReconciler(mgr manager.Manager) (reconcile.Reconciler, error) {
cli, err := clientcmd.NewClient(mgr.GetConfig())
if err != nil {
return nil, errors.Wrap(err, "create clientcmd")
}
sv, err := version.Server(cli)
if err != nil {
return nil, errors.Wrap(err, "get server version")
}
mgr.GetLogger().Info("server version", "platform", sv.Platform, "version", sv.Info)
initImage, err := getOperatorPodImage(context.TODO())
if err != nil {
return nil, errors.Wrap(err, "failed to get operator pod image")
}
secretProviders := []pkgSecret.Provider{
new(vault.Provider),
}
return &ReconcilePerconaServerMongoDB{
client: mgr.GetClient(),
scheme: mgr.GetScheme(),
serverVersion: sv,
reconcileIn: getReconcileInterval(),
crons: NewCronRegistry(),
lockers: newLockStore(),
newPBM: backup.NewPBM,
restConfig: mgr.GetConfig(),
newCertManagerCtrlFunc: tls.NewCertManagerController,
secretProviderHandler: pkgSecret.NewProviderHandler(secretProviders...),
initImage: initImage,
clientcmd: cli,
}, nil
}
func getOperatorPodImage(ctx context.Context) (string, error) {
cfg, err := config.GetConfig()
if err != nil {
return "", err
}
c, err := client.New(cfg, client.Options{})
if err != nil {
return "", err
}
nsBytes, err := os.ReadFile("/var/run/secrets/kubernetes.io/serviceaccount/namespace")
if err != nil {
return "", err
}
ns := strings.TrimSpace(string(nsBytes))
pod := &corev1.Pod{}
err = c.Get(ctx, types.NamespacedName{Namespace: ns, Name: os.Getenv("HOSTNAME")}, pod)
if err != nil {
return "", err
}
return pod.Spec.Containers[0].Image, nil
}
// getReconcileInterval returns the reconciliation interval from the RECONCILE_INTERVAL
// environment variable, or the default of 5 seconds if not set or invalid.
func getReconcileInterval() time.Duration {
defaultInterval := 5 * time.Second
interval := os.Getenv("RECONCILE_INTERVAL")
if interval == "" {
return defaultInterval
}
d, err := time.ParseDuration(interval)
if err != nil {
log := logf.Log.WithName("psmdb-controller")
log.Info("Invalid RECONCILE_INTERVAL value, using default (5s)", "value", interval, "error", err, "default", defaultInterval)
return defaultInterval
}
if d < defaultInterval {
log := logf.Log.WithName("psmdb-controller")
log.Info("RECONCILE_INTERVAL must be at least 5s, using 5s", "value", interval, "default", defaultInterval)
return defaultInterval
}
return d
}
// add adds a new Controller to mgr with r as the reconcile.Reconciler
func add(mgr manager.Manager, r reconcile.Reconciler) error {
return builder.ControllerManagedBy(mgr).
For(&api.PerconaServerMongoDB{}).
Named("psmdb-controller").
Complete(r)
}
var _ reconcile.Reconciler = &ReconcilePerconaServerMongoDB{}
type CronRegistry struct {
crons *cron.Cron
ensureVersionJobs *sync.Map
backupJobs *sync.Map
}
// AddFuncWithSeconds does the same as cron.AddFunc but changes the schedule so that the function will run the exact second that this method is called.
func (r *CronRegistry) AddFuncWithSeconds(spec string, cmd func()) (cron.EntryID, error) {
schedule, err := cron.ParseStandard(spec)
if err != nil {
return 0, errors.Wrap(err, "failed to parse cron schedule")
}
schedule.(*cron.SpecSchedule).Second = uint64(1 << time.Now().Second())
id := r.crons.Schedule(schedule, cron.FuncJob(cmd))
return id, nil
}
func NewCronRegistry() CronRegistry {
c := CronRegistry{
crons: cron.New(),
ensureVersionJobs: new(sync.Map),
backupJobs: new(sync.Map),
}
c.crons.Start()
return c
}
// ClientCmd is an interface for executing commands in pods
type ClientCmd interface {
Exec(ctx context.Context, pod *corev1.Pod, containerName string, command []string, stdin io.Reader, stdout, stderr io.Writer, tty bool) error
}
// ReconcilePerconaServerMongoDB reconciles a PerconaServerMongoDB object
type ReconcilePerconaServerMongoDB struct {
// This client, initialized using mgr.Client() above, is a split client
// that reads objects from the cache and writes to the apiserver
client client.Client
scheme *runtime.Scheme
restConfig *rest.Config
crons CronRegistry
clientcmd ClientCmd
serverVersion *version.ServerVersion
reconcileIn time.Duration
mongoClientProvider MongoClientProvider
secretProviderHandler *pkgSecret.ProviderHandler
newCertManagerCtrlFunc tls.NewCertManagerControllerFunc
newPBM backup.NewPBMFunc
initImage string
lockers lockStore
}
type lockStore struct {
store *sync.Map
}
func newLockStore() lockStore {
return lockStore{
store: new(sync.Map),
}
}
func (l lockStore) LoadOrCreate(key string) lock {
val, _ := l.store.LoadOrStore(key, lock{
statusMutex: new(sync.Mutex),
resyncMutex: new(sync.Mutex),
updateSync: new(int32),
})
return val.(lock)
}
type lock struct {
statusMutex *sync.Mutex
resyncMutex *sync.Mutex
updateSync *int32
}
const (
updateDone = 0
updateWait = 1
)
// Reconcile reads that state of the cluster for a PerconaServerMongoDB object and makes changes based on the state read
// and what is in the PerconaServerMongoDB.Spec
// Note:
// The Controller will requeue the Request to be processed again if the returned error is non-nil or
// Result.Requeue is true, otherwise upon completion it will remove the work from the queue.
func (r *ReconcilePerconaServerMongoDB) Reconcile(ctx context.Context, request reconcile.Request) (reconcile.Result, error) {
log := logf.FromContext(ctx)
rr := reconcile.Result{
RequeueAfter: r.reconcileIn,
}
// As operator can handle a few clusters
// lock should be created per cluster to not lock cron jobs of other clusters
l := r.lockers.LoadOrCreate(request.NamespacedName.String())
// PerconaServerMongoDB object is also accessed and changed by a version service's cron job (that runs concurrently)
l.statusMutex.Lock()
defer l.statusMutex.Unlock()
// we have to be sure the reconcile loop will be run at least once
// in-between any version service jobs (hence any two vs jobs shouldn't be run sequentially).
// the version service job sets the state to `updateWait` and the next job can be run only
// after the state was dropped to`updateDone` again
defer atomic.StoreInt32(l.updateSync, updateDone)
// Fetch the PerconaServerMongoDB instance
cr := &api.PerconaServerMongoDB{}
err := r.client.Get(ctx, request.NamespacedName, cr)
if err != nil {
if k8serrors.IsNotFound(err) {
// Request object not found, could have been deleted after reconcile request.
// Owned objects are automatically garbage collected. For additional cleanup logic use finalizers.
// Return and don't requeue
return reconcile.Result{}, nil
}
// Error reading the object - requeue the request.
return rr, err
}
clusterStatus := api.AppStateInit
defer func() {
err = r.updateStatus(ctx, cr, err, clusterStatus)
if err != nil {
log.Error(err, "failed to update cluster status", "replset", cr.Spec.Replsets[0].Name)
}
}()
if err := r.setCRVersion(ctx, cr); err != nil {
return reconcile.Result{}, errors.Wrap(err, "set CR version")
}
err = cr.CheckNSetDefaults(ctx, r.serverVersion.Platform)
if err != nil {
// If the user created a cluster with finalizers and wrong options, it would be impossible to delete a cluster.
// We need to delete finalizers.
//
// TODO: Separate CheckNSetDefaults into two different methods "Check" and "SetDefaults".
// Use "SetDefaults" and try to run "checkFinalizers" instead of just deleting finalizers.
// Currently we can't run the "checkFinalizers" method because we will get nil pointer reference panics,
// due to defaults not being set.
if cr.DeletionTimestamp != nil {
if err := retry.RetryOnConflict(retry.DefaultRetry, func() error {
c := &api.PerconaServerMongoDB{}
if err := r.client.Get(ctx, client.ObjectKeyFromObject(cr), c); err != nil {
return err
}
c.SetFinalizers([]string{})
return r.client.Update(ctx, c)
}); err != nil {
log.Error(err, "failed to remove finalizers")
}
}
err = errors.Wrap(err, "wrong psmdb options")
return reconcile.Result{}, err
}
if err := r.secretProviderHandler.Update(ctx, r.client, cr); err != nil {
if pkgSecret.IsCriticalErr(err) {
return reconcile.Result{}, errors.Wrap(err, "update secret providers")
}
log.Error(err, "failed update secret providers")
}
if cr.ObjectMeta.DeletionTimestamp != nil {
rec, err := r.checkFinalizers(ctx, cr)
if rec || err != nil {
return rr, err
}
}
err = r.reconcilePause(ctx, cr)
if err != nil {
return reconcile.Result{}, err
}
err = r.checkConfiguration(ctx, cr)
if err != nil {
return reconcile.Result{}, err
}
isDownscale, err := r.safeDownscale(ctx, cr)
if err != nil {
return reconcile.Result{}, errors.Wrap(err, "safe downscale")
}
err = r.reconcileUsersSecret(ctx, cr)
if err != nil {
return reconcile.Result{}, errors.Wrap(err, "reconcile users secret")
}
repls := cr.Spec.Replsets
if cr.Spec.Sharding.Enabled && cr.Spec.Sharding.ConfigsvrReplSet != nil {
repls = append([]*api.ReplsetSpec{cr.Spec.Sharding.ConfigsvrReplSet}, repls...)
}
err = r.reconcileMongodConfigMaps(ctx, cr, repls)
if err != nil {
return reconcile.Result{}, errors.Wrap(err, "reconcile mongod configmaps")
}
if err := r.reconcileMongosConfigMaps(ctx, cr); err != nil {
return reconcile.Result{}, errors.Wrap(err, "reconcile mongos config map")
}
if cr.CompareVersion("1.21.0") >= 0 {
if err := r.reconcileLogCollectorConfigMaps(ctx, cr); err != nil {
return reconcile.Result{}, errors.Wrap(err, "reconcile log collector config map")
}
}
if cr.CompareVersion("1.22.0") >= 0 {
if err := r.reconcileLogRotateConfigMaps(ctx, cr); err != nil {
return reconcile.Result{}, errors.Wrap(err, "reconcile log rotate config map")
}
}
err = r.reconcileUsers(ctx, cr, repls)
if err != nil {
return reconcile.Result{}, errors.Wrap(err, "failed to reconcile users")
}
stsForDeletion, err := r.getSTSForDeletionWithTheirRSDetails(ctx, cr)
if err != nil {
return reconcile.Result{}, err
}
for _, rr := range stsForDeletion {
log.Info("Deleting STS component from replst", "sts", rr.sts.Name, "rs", rr.rsName, "port", rr.rsPort)
err = r.checkIfUserDataExistInRS(ctx, cr, rr.rsName, rr.rsPort)
if err != nil {
return reconcile.Result{}, errors.Wrapf(err, "check remove posibility for rs %s", rr.rsName)
}
if rr.sts.Labels[naming.LabelKubernetesComponent] == "mongod" {
err = r.removeRSFromShard(ctx, cr, rr.rsName)
if err != nil {
return reconcile.Result{}, errors.Wrapf(err, "failed to remove rs %s", rr.rsName)
}
}
err = r.client.Delete(ctx, &rr.sts)
if err != nil {
return reconcile.Result{}, errors.Wrapf(err, "failed to remove rs %s", rr.rsName)
}
}
if cr.Status.MongoVersion == "" || strings.HasSuffix(cr.Status.MongoVersion, "intermediate") {
err := r.ensureVersion(ctx, cr, VersionServiceClient{})
if err != nil {
log.Info("failed to ensure version, running with default", "error", err)
}
}
err = r.reconcileSSL(ctx, cr)
if err != nil {
if errors.Is(err, errTLSNotReady) {
// certManagementPolicy is userProvidedOnly and the TLS secret isn't there yet.
// Stay in init state and wait for the user to create it instead of erroring out.
log.Info("waiting for user-provided TLS secret before continuing reconciliation", "secret", api.SSLSecretName(cr))
err = nil
return rr, nil
}
err = errors.Errorf(`TLS secrets handler: "%v". Please create your TLS secret `+api.SSLSecretName(cr)+` manually or setup cert-manager correctly`, err)
return reconcile.Result{}, err
}
err = r.ensureSecurityKeys(ctx, cr)
if err != nil {
return reconcile.Result{}, err
}
err = r.reconcileBackups(ctx, cr)
if err != nil {
return reconcile.Result{}, errors.Wrap(err, "reconcile backup tasks")
}
clusterStatus, err = r.reconcileReplsets(ctx, cr, repls)
if err != nil {
return reconcile.Result{}, errors.Wrap(err, "reconcile statefulsets")
}
err = r.reconcileMongos(ctx, cr)
if err != nil {
return reconcile.Result{}, errors.Wrap(err, "reconcile mongos")
}
if err := r.upgradeFCVIfNeeded(ctx, cr, cr.Status.MongoVersion); err != nil {
return reconcile.Result{}, errors.Wrap(err, "failed to set FCV")
}
// clean orphan PVCs if downscale
if isDownscale {
err = r.deleteOrphanPVCs(ctx, cr)
if err != nil {
return reconcile.Result{}, fmt.Errorf("failed to delete orphan PVCs: %v", err)
}
}
err = r.reconcileCustomUsers(ctx, cr)
if err != nil {
return reconcile.Result{}, errors.Wrap(err, "reconcile custom users")
}
err = r.exportServices(ctx, cr)
if err != nil {
return reconcile.Result{}, errors.Wrap(err, "export services")
}
err = r.scheduleEnsureVersion(ctx, cr, VersionServiceClient{})
if err != nil {
return reconcile.Result{}, errors.Wrap(err, "schedule ensure version job")
}
err = r.scheduleTelemetryRequests(ctx, cr, VersionServiceClient{})
if err != nil {
return reconcile.Result{}, errors.Wrap(err, "schedule telemetry job")
}
err = r.reconcilePBM(ctx, cr)
if err != nil {
return reconcile.Result{}, errors.Wrap(err, "reconcile PBM")
}
return rr, nil
}
func (r *ReconcilePerconaServerMongoDB) reconcileReplset(ctx context.Context, cr *api.PerconaServerMongoDB, replset *api.ReplsetSpec) error {
matchLabels := naming.MongodLabels(cr, replset)
_, err := r.reconcileStatefulSet(ctx, cr, replset, matchLabels)
if err != nil {
err = errors.Errorf("reconcile StatefulSet for %s: %v", replset.Name, err)
return err
}
if replset.Arbiter.Enabled {
matchLabels = naming.ArbiterLabels(cr, replset)
_, err := r.reconcileStatefulSet(ctx, cr, replset, matchLabels)
if err != nil {
err = errors.Errorf("reconcile Arbiter StatefulSet for %s: %v", replset.Name, err)
return err
}
} else {
if err := k8sutils.DeleteIfExists(ctx, r.client, psmdb.NewStatefulSet(naming.ArbiterStatefulSetName(cr, replset), cr.Namespace)); err != nil {
return errors.Wrapf(err, "failed to delete arbiter statefulset: %s", naming.ArbiterStatefulSetName(cr, replset))
}
}
if replset.NonVoting.Enabled {
matchLabels = naming.NonVotingLabels(cr, replset)
_, err := r.reconcileStatefulSet(ctx, cr, replset, matchLabels)
if err != nil {
err = errors.Errorf("reconcile nonVoting StatefulSet for %s: %v", replset.Name, err)
return err
}
} else {
if err := k8sutils.DeleteIfExists(ctx, r.client, psmdb.NewStatefulSet(naming.NonVotingStatefulSetName(cr, replset), cr.Namespace)); err != nil {
return errors.Wrapf(err, "failed to delete non voting statefulset: %s", naming.NonVotingStatefulSetName(cr, replset))
}
}
if replset.Hidden.Enabled {
matchLabels = naming.HiddenLabels(cr, replset)
_, err := r.reconcileStatefulSet(ctx, cr, replset, matchLabels)
if err != nil {
err = errors.Errorf("reconcile hidden StatefulSet for %s: %v", replset.Name, err)
return err
}
} else {
if err := k8sutils.DeleteIfExists(ctx, r.client, psmdb.NewStatefulSet(naming.HiddenStatefulSetName(cr, replset), cr.Namespace)); err != nil {
return errors.Wrapf(err, "failed to delete hidden statefulset: %s", naming.HiddenStatefulSetName(cr, replset))
}
}
_, ok := cr.Status.Replsets[replset.Name]
if !ok {
cr.Status.Replsets[replset.Name] = api.ReplsetStatus{}
}
return nil
}
func (r *ReconcilePerconaServerMongoDB) reconcileReplsets(ctx context.Context, cr *api.PerconaServerMongoDB, repls []*api.ReplsetSpec) (api.AppState, error) {
log := logf.FromContext(ctx)
if err := r.reconcileServices(ctx, cr, repls); err != nil {
return "", errors.Wrap(err, "reconcile services")
}
for _, replset := range repls {
if cr.Spec.Sharding.Enabled && replset.ClusterRole != api.ClusterRoleConfigSvr && replset.Name == api.ConfigReplSetName {
return "", errors.Errorf("%s is reserved name for config server replset", api.ConfigReplSetName)
}
if err := r.reconcileReplset(ctx, cr, replset); err != nil {
return "", errors.Wrapf(err, "reconcile replset %s", replset.Name)
}
// TODO: why do we do it for each replset??
if err := r.fetchVersionFromMongo(ctx, cr, replset); err != nil {
return "", errors.Wrap(err, "update mongo version")
}
}
mongosPods, err := r.getMongosPods(ctx, cr)
if err != nil && !k8serrors.IsNotFound(err) {
return "", errors.Wrap(err, "get pods list for mongos")
}
var errs []error
clusterStatus := api.AppStateNone
for _, replset := range repls {
replsetStatus, members, err := r.reconcileCluster(ctx, cr, replset, mongosPods.Items)
if err != nil {
log.Error(err, "failed to reconcile cluster", "replset", replset.Name)
errs = append(errs, err)
}
switch replsetStatus {
case api.AppStateInit, api.AppStateError:
log.V(1).Info("Replset status is not healthy", "replset", replset.Name, "status", replsetStatus)
}
statusPriority := []api.AppState{
api.AppStateError,
api.AppStateStopping,
api.AppStatePaused,
api.AppStateInit,
api.AppStateReady,
}
for _, s := range statusPriority {
if replsetStatus == s || clusterStatus == s {
clusterStatus = s
break
}
}
if rs, ok := cr.Status.Replsets[replset.Name]; ok {
rs.Members = make(map[string]api.ReplsetMemberStatus)
for pod, member := range members {
rs.Members[pod] = member
}
cr.Status.Replsets[replset.Name] = rs
}
}
return clusterStatus, stderrors.Join(errs...)
}
func (r *ReconcilePerconaServerMongoDB) handleShardingToggle(ctx context.Context, cr *api.PerconaServerMongoDB) error {
if cr.Spec.Pause || !cr.Spec.Backup.Enabled {
return nil
}
getShardingStatus := func(cr *api.PerconaServerMongoDB) api.ConditionStatus {
if cr.Spec.Sharding.Enabled {
return api.ConditionTrue
}
return api.ConditionFalse
}
toggleShardingStatus := func(s api.ConditionStatus) bool {
return s != api.ConditionTrue
}
condition := cr.Status.FindCondition(api.AppStateSharding)
if condition == nil {
cr.Status.AddCondition(api.ClusterCondition{
Status: getShardingStatus(cr),
Type: api.AppStateSharding,
LastTransitionTime: metav1.NewTime(time.Now()),
})
return nil
}
if condition.Status == getShardingStatus(cr) {
return nil
}
log := logf.FromContext(ctx)
if toggleShardingStatus(condition.Status) {
log.Info("Sharding is enabled, pausing the cluster")
} else {
log.Info("Sharding is disabled, pausing the cluster")
}
cr.Spec.Sharding.Enabled = toggleShardingStatus(condition.Status)
cr.Spec.Pause = true
if err := cr.CheckNSetDefaults(ctx, r.serverVersion.Platform); err != nil {
return errors.Wrap(err, "check and set defaults")
}
mongodPods, err := r.getMongodPods(ctx, cr)
if err != nil {
return errors.Wrap(err, "get mongod pods")
}
mongosPods, err := r.getMongosPods(ctx, cr)
if err != nil {
return errors.Wrap(err, "get mongos pods")
}
if len(mongodPods.Items) != 0 || len(mongosPods.Items) != 0 {
return nil
}
cr.Spec.Sharding.Enabled = toggleShardingStatus(condition.Status)
cr.Spec.Pause = false
// toggling sharding status removes all PBM collections, so we need to reconfigure
cr.Status.BackupConfigHash = ""
if err := cr.CheckNSetDefaults(ctx, r.serverVersion.Platform); err != nil {
return errors.Wrap(err, "check and set defaults")
}
condition.Status = getShardingStatus(cr)
condition.LastTransitionTime = metav1.NewTime(time.Now())
return nil
}
func (r *ReconcilePerconaServerMongoDB) reconcilePause(ctx context.Context, cr *api.PerconaServerMongoDB) error {
if err := r.handleShardingToggle(ctx, cr); err != nil {
return errors.Wrap(err, "handle sharding toggle")
}
if !cr.Spec.Pause || cr.DeletionTimestamp != nil {
return nil
}
log := logf.FromContext(ctx)
backupRunning, err := r.isBackupRunning(ctx, cr)
if err != nil {
return errors.Wrap(err, "check if backup is running")
}
if backupRunning {
cr.Spec.Pause = false
if err := cr.CheckNSetDefaults(ctx, r.serverVersion.Platform); err != nil {
return errors.Wrap(err, "failed to set defaults")
}
log.Info("cluster will pause after all backups finished")
return nil
}
for _, rs := range cr.Spec.Replsets {
if cr.Status.State == api.AppStateStopping {
log.Info("pausing cluster", "replset", rs.Name)
}
rs.Arbiter.Enabled = false
rs.NonVoting.Enabled = false
}
if err := r.deletePSMDBPods(ctx, cr); err != nil {
if err == errWaitingTermination {
return nil
}
return errors.Wrap(err, "delete psmdb pods")
}
return nil
}
func (r *ReconcilePerconaServerMongoDB) setCRVersion(ctx context.Context, cr *api.PerconaServerMongoDB) error {
if len(cr.Spec.CRVersion) > 0 {
return nil
}
orig := cr.DeepCopy()
cr.Spec.CRVersion = version.Version()
if err := r.client.Patch(ctx, cr, client.MergeFrom(orig)); err != nil {
return errors.Wrap(err, "patch CR")
}
logf.FromContext(ctx).Info("Set CR version", "version", cr.Spec.CRVersion)
return nil
}
func (r *ReconcilePerconaServerMongoDB) checkConfiguration(ctx context.Context, cr *api.PerconaServerMongoDB) error {
// check if sharding has already been enabled
_, cfgErr := r.getCfgStatefulset(ctx, cr)
if cfgErr != nil && !k8serrors.IsNotFound(cfgErr) {
return errors.Wrap(cfgErr, "failed to get cfg replset")
}
rs, rsErr := r.getMongodStatefulsets(ctx, cr)
if rsErr != nil && !k8serrors.IsNotFound(rsErr) {
return errors.Wrap(rsErr, "failed to get all replsets")
}
if !cr.Spec.Sharding.Enabled {
// means we have already had sharded cluster and try to disable sharding
if cfgErr == nil && len(rs.Items) > 1 {
return errors.Errorf("failed to disable sharding with %d active replsets", len(rs.Items))
}
// means we want to run multiple replsets without sharding
if len(cr.Spec.Replsets) > 1 {
return errors.New("running multiple replsets without sharding is prohibited")
}
}
return nil
}
// safeDownscale ensures replica set pods downscaled one by one and returns true if a downscale is in progress
func (r *ReconcilePerconaServerMongoDB) safeDownscale(ctx context.Context, cr *api.PerconaServerMongoDB) (bool, error) {
isDownscale := false
for _, rs := range cr.Spec.Replsets {
sf, err := r.getRsStatefulset(ctx, cr, rs.Name)
if err != nil && !k8serrors.IsNotFound(err) {
return false, errors.Wrap(err, "get rs statefulset")
}
if k8serrors.IsNotFound(err) {
continue
}
// downscale 1 pod on each reconciliation
if *sf.Spec.Replicas-rs.Size > 1 {
rs.Size = *sf.Spec.Replicas - 1
isDownscale = true
}
}
return isDownscale, nil
}
type statefulSetWithReplicaNameAndPort struct {
sts appsv1.StatefulSet
rsName string
rsPort int32
}
// getSTSForDeletionWithTheirRSDetails identifies StatefulSets that should be deleted and returns them
// along with their associated replica set name and port. This information is used to create a MongoDB
// client and perform necessary operations before the sts deletion.
func (r *ReconcilePerconaServerMongoDB) getSTSForDeletionWithTheirRSDetails(ctx context.Context, cr *api.PerconaServerMongoDB) ([]statefulSetWithReplicaNameAndPort, error) {
existingSTSList := appsv1.StatefulSetList{}
if err := r.client.List(
ctx, &existingSTSList,
&client.ListOptions{
Namespace: cr.Namespace,
LabelSelector: labels.SelectorFromSet(map[string]string{
naming.LabelKubernetesInstance: cr.Name,
}),
},
); err != nil {
return nil, errors.Wrap(err, "failed to get statefulset list")
}
newlyAppliedRSNames := make(map[string]struct{}, len(cr.Spec.Replsets))
for _, rs := range cr.Spec.Replsets {
newlyAppliedRSNames[rs.Name] = struct{}{}
}
var removed []statefulSetWithReplicaNameAndPort
for _, sts := range existingSTSList.Items {
component := sts.Labels[naming.LabelKubernetesComponent]
if component == "mongos" || sts.Name == cr.Name+"-"+api.ConfigReplSetName {
continue
}
rsName := sts.Labels[naming.LabelKubernetesReplset]
if _, ok := newlyAppliedRSNames[rsName]; ok {
continue
}
port, err := getComponentPortFromSTS(sts, component)
if err != nil {
return nil, errors.Wrap(err, "get component port from sts")
}
removed = append(removed, statefulSetWithReplicaNameAndPort{rsName: rsName, rsPort: port, sts: sts})
}
// Sorting in reverse order to ensure that we first delete non-voting/arbiter before the main RS sts.
sort.Slice(removed, func(i, j int) bool {
return removed[i].sts.Name > removed[j].sts.Name
})
return removed, nil
}
func getComponentPortFromSTS(sts appsv1.StatefulSet, componentName string) (int32, error) {
for _, container := range sts.Spec.Template.Spec.Containers {
if container.Name == componentName {
if len(container.Ports) > 0 {
return container.Ports[0].ContainerPort, nil
}
return 0, fmt.Errorf("no ports found for container %s", componentName)
}
}
// With this check we are catching cases like arbiter and non-voting
// where the container name is different from the component name. For now,
// we don't modify the ports of these components.
if componentName != "mongod" {
return api.DefaultMongoPort, nil
}
return 0, fmt.Errorf("container not found: %s", componentName)
}
// checkIfUserDataExistInRS verifies if a MongoDB replica set with particular name can be safely removed. It checks
// whether any user (non-system) databases exist, if they do, that would indicate that the replica set cannot be safely deleted.
func (r *ReconcilePerconaServerMongoDB) checkIfUserDataExistInRS(ctx context.Context, cr *api.PerconaServerMongoDB, rsName string, port int32) error {
log := logf.FromContext(ctx)
systemDBs := map[string]struct{}{
"local": {},
"admin": {},
"config": {},
}
rs := &api.ReplsetSpec{Name: rsName}
// Setting the port using the mongo configuration because currently we are not
// exposing the port on the rs spec as an option.
err := rs.Configuration.SetPort(port)
if err != nil {
return errors.Wrap(err, "failed to set port")
}
mc, err := r.mongoClientWithRole(ctx, cr, rs, api.RoleClusterAdmin)
if err != nil {
return errors.Wrap(err, "dial:")
}
defer func() {
err := mc.Disconnect(ctx)
if err != nil {
log.Error(err, "failed to close connection")
}
}()
list, err := mc.ListDBs(ctx)
if err != nil {
log.Error(err, "failed to list databases", "rs", rsName)
return errors.Wrapf(err, "failed to list databases for rs %s", rsName)
}
for _, db := range list.DBs {
if _, ok := systemDBs[db.Name]; !ok {
return errors.Errorf("non system db found: %s", db.Name)
}
}
return nil
}
func (r *ReconcilePerconaServerMongoDB) ensureSecurityKeys(ctx context.Context, cr *api.PerconaServerMongoDB) error {
log := logf.FromContext(ctx)
ikCreated, err := r.ensureSecurityKey(ctx, cr, cr.Spec.Secrets.GetInternalKey(cr), api.InternalKeyName, 768, true)
if err != nil {
return errors.Wrapf(err, "ensure mongo Key %s", cr.Spec.Secrets.GetInternalKey(cr))
}
if ikCreated {
log.Info("Created a new mongo key", "KeyName", cr.Spec.Secrets.GetInternalKey(cr))
}
if cr.Spec.Secrets.Vault == "" || cr.CompareVersion("1.23.0") < 0 {
created, err := r.ensureSecurityKey(ctx, cr, cr.Spec.Secrets.EncryptionKey, api.EncryptionKeyName, 32, false)
if err != nil {
return errors.Wrapf(err, "ensure mongo Key %s", cr.Spec.Secrets.EncryptionKey)
}
if created {
log.Info("Created a new mongo key", "KeyName", cr.Spec.Secrets.EncryptionKey)
}
}
return nil
}
func (r *ReconcilePerconaServerMongoDB) ensureSecurityKey(ctx context.Context, cr *api.PerconaServerMongoDB, secretName, keyName string, keyLen int, setOwner bool) (created bool, err error) {
key := &corev1.Secret{
TypeMeta: metav1.TypeMeta{
APIVersion: "v1",
Kind: "Secret",
},
ObjectMeta: metav1.ObjectMeta{
Name: secretName,
Namespace: cr.Namespace,
},
}
err = r.client.Get(ctx, types.NamespacedName{Name: key.Name, Namespace: key.Namespace}, key)
if err != nil && k8serrors.IsNotFound(err) {
created = true
if setOwner {
err = setControllerReference(cr, key, r.scheme)
if err != nil {
return false, errors.Wrap(err, "set owner ref")
}
}
key.Data = make(map[string][]byte)
key.Data[keyName], err = secret.GenerateKey1024(keyLen)
if err != nil {