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minio.go
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minio.go
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package kotsadm
import (
"bytes"
"context"
"regexp"
"time"
"github.com/pkg/errors"
"github.com/replicatedhq/kots/pkg/k8sutil"
kotsadmobjects "github.com/replicatedhq/kots/pkg/kotsadm/objects"
"github.com/replicatedhq/kots/pkg/kotsadm/types"
kotsadmtypes "github.com/replicatedhq/kots/pkg/kotsadm/types"
"github.com/replicatedhq/kots/pkg/logger"
"github.com/replicatedhq/kots/pkg/snapshot"
velerov1api "github.com/vmware-tanzu/velero/pkg/apis/velero/v1"
veleroclientv1 "github.com/vmware-tanzu/velero/pkg/generated/clientset/versioned/typed/velero/v1"
corev1 "k8s.io/api/core/v1"
kuberneteserrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/serializer/json"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/kubernetes/scheme"
)
var (
MinioChainguardImageTagRegexp = regexp.MustCompile(`:0\.\d+`)
MinioImageTagDateRegexp = regexp.MustCompile(`RELEASE\.(\d{4}-\d{2}-\d{2}T\d{2}-\d{2}-\d{2}Z)`)
// MigrateToMinioXlBeforeTime is the time that the minio version was released that removed the legacy backend
// that we need to migrate from: https://github.com/minio/minio/releases/tag/RELEASE.2022-10-29T06-21-33Z
MigrateToMinioXlBeforeTime = time.Date(2022, 10, 29, 6, 21, 33, 0, time.UTC)
)
func getMinioYAML(deployOptions types.DeployOptions) (map[string][]byte, error) {
docs := map[string][]byte{}
s := json.NewYAMLSerializer(json.DefaultMetaFactory, scheme.Scheme, scheme.Scheme)
if deployOptions.MigrateToMinioXl {
var configMap bytes.Buffer
if err := s.Encode(kotsadmobjects.MinioXlMigrationScriptsConfigMap(deployOptions.Namespace), &configMap); err != nil {
return nil, errors.Wrap(err, "failed to marshal minio migration configmap")
}
docs["minio-xl-migration-configmap.yaml"] = configMap.Bytes()
}
size, err := getSize(deployOptions, "minio", resource.MustParse("4Gi"))
if err != nil {
return nil, errors.Wrap(err, "failed to get size")
}
minioSts, err := kotsadmobjects.MinioStatefulset(deployOptions, size)
if err != nil {
return nil, errors.Wrap(err, "failed to get minio statefulset definition")
}
var statefulset bytes.Buffer
if err := s.Encode(minioSts, &statefulset); err != nil {
return nil, errors.Wrap(err, "failed to marshal minio statefulset")
}
docs["minio-statefulset.yaml"] = statefulset.Bytes()
var service bytes.Buffer
if err := s.Encode(kotsadmobjects.MinioService(deployOptions.Namespace), &service); err != nil {
return nil, errors.Wrap(err, "failed to marshal minio service")
}
docs["minio-service.yaml"] = service.Bytes()
return docs, nil
}
func ensureMinio(deployOptions types.DeployOptions, clientset kubernetes.Interface) error {
size, err := getSize(deployOptions, "minio", resource.MustParse("4Gi"))
if err != nil {
return errors.Wrap(err, "failed to get size")
}
if err := ensureS3Secret(deployOptions.Namespace, clientset); err != nil {
return errors.Wrap(err, "failed to ensure minio secret")
}
if deployOptions.MigrateToMinioXl {
if err := ensureMinioXlMigrationScriptsConfigmap(deployOptions.Namespace, clientset); err != nil {
return errors.Wrap(err, "failed to ensure minio xl migration scripts configmap")
}
}
if err := ensureMinioStatefulset(deployOptions, clientset, size); err != nil {
return errors.Wrap(err, "failed to ensure minio statefulset")
}
if deployOptions.MigrateToMinioXl {
if err := ensureMinioXlMigrationStatusConfigmap(deployOptions.Namespace, clientset); err != nil {
return errors.Wrap(err, "failed to ensure minio xl migration status configmap")
}
}
if err := ensureMinioService(deployOptions.Namespace, clientset); err != nil {
return errors.Wrap(err, "failed to ensure minio service")
}
return nil
}
func ensureMinioStatefulset(deployOptions types.DeployOptions, clientset kubernetes.Interface, size resource.Quantity) error {
desiredMinio, err := kotsadmobjects.MinioStatefulset(deployOptions, size)
if err != nil {
return errors.Wrap(err, "failed to get desired minio statefulset definition")
}
ctx := context.TODO()
existingMinio, err := clientset.AppsV1().StatefulSets(deployOptions.Namespace).Get(ctx, "kotsadm-minio", metav1.GetOptions{})
if err != nil {
if !kuberneteserrors.IsNotFound(err) {
return errors.Wrap(err, "failed to get existing statefulset")
}
_, err := clientset.AppsV1().StatefulSets(deployOptions.Namespace).Create(ctx, desiredMinio, metav1.CreateOptions{})
if err != nil {
return errors.Wrap(err, "failed to create minio statefulset")
}
return nil
}
if len(existingMinio.Spec.Template.Spec.Containers) != 1 || len(desiredMinio.Spec.Template.Spec.Containers) != 1 {
return errors.New("minio stateful set cannot be upgraded")
}
existingMinio.Spec.Template.Spec.Volumes = desiredMinio.Spec.Template.Spec.DeepCopy().Volumes
existingMinio.Spec.Template.Spec.Containers[0].Image = desiredMinio.Spec.Template.Spec.Containers[0].Image
existingMinio.Spec.Template.Spec.Containers[0].VolumeMounts = desiredMinio.Spec.Template.Spec.Containers[0].DeepCopy().VolumeMounts
existingMinio.Spec.Template.Spec.Containers[0].Command = desiredMinio.Spec.Template.Spec.Containers[0].Command
existingMinio.Spec.Template.Spec.InitContainers = desiredMinio.Spec.Template.Spec.DeepCopy().InitContainers
_, err = clientset.AppsV1().StatefulSets(deployOptions.Namespace).Update(ctx, existingMinio, metav1.UpdateOptions{})
if err != nil {
return errors.Wrap(err, "failed to update minio statefulset")
}
return nil
}
func ensureMinioService(namespace string, clientset kubernetes.Interface) error {
_, err := clientset.CoreV1().Services(namespace).Get(context.TODO(), "kotsadm-minio", metav1.GetOptions{})
if err != nil {
if !kuberneteserrors.IsNotFound(err) {
return errors.Wrap(err, "failed to get existing service")
}
_, err := clientset.CoreV1().Services(namespace).Create(context.TODO(), kotsadmobjects.MinioService(namespace), metav1.CreateOptions{})
if err != nil {
return errors.Wrap(err, "failed to create service")
}
}
return nil
}
// MigrateExistingMinioFilesystemDeployments excutes a migration of minio snapshots deployment to the local-volume-provider
// plugin and validates the backups are still accessible. The plugin must already be installed on the cluster with velero
// accessible. This function will configure the plugin and update the default backup storage location. If the backup storage location
// cannot be updated or the plugin fails, the
func MigrateExistingMinioFilesystemDeployments(log *logger.CLILogger, deployOptions *types.DeployOptions) error {
prevFsConfig, err := snapshot.GetCurrentMinioFileSystemConfig(context.TODO(), deployOptions.Namespace)
if err != nil {
errors.Wrap(err, "failed to get check for filesystem snapshot")
}
if prevFsConfig == nil {
return nil
}
if prevFsConfig.NFS == nil && prevFsConfig.HostPath == nil {
return nil
}
log.Info("Detected existing Minio Snapshot installation. Attempting to migrate.")
veleroStatus, err := snapshot.DetectVelero(context.TODO(), deployOptions.Namespace)
if err != nil {
return errors.Wrap(err, "failed to detect velero for filesystem migration")
}
if veleroStatus == nil {
log.Info("velero is not installed - skipping snapshot migration")
return nil
}
veleroNamespace := veleroStatus.Namespace
cfg, err := k8sutil.GetClusterConfig()
if err != nil {
return errors.Wrap(err, "failed to get cluster config")
}
clientset, err := kubernetes.NewForConfig(cfg)
if err != nil {
return errors.Wrap(err, "failed to create clientset")
}
veleroClient, err := veleroclientv1.NewForConfig(cfg)
if err != nil {
return errors.Wrap(err, "failed to create velero clientset")
}
bsl, err := snapshot.FindBackupStoreLocation(context.TODO(), clientset, veleroClient, deployOptions.Namespace)
if err != nil {
return errors.Wrap(err, "failed to find backupstoragelocations")
}
if bsl == nil {
log.Info("Did not detect active Minio snapshot install. Cleaning up.")
// Minio FS is not longer enabled; clean up and exit
// Not catching the error here, as this is not required to proceed
snapshot.DeleteFileSystemMinio(context.TODO(), deployOptions.Namespace)
return nil
}
store, err := snapshot.GetGlobalStore(context.TODO(), deployOptions.Namespace, bsl)
if err != nil {
return errors.Wrap(err, "failed to get snapshot store")
}
if store == nil || store.FileSystem == nil {
log.Info("Did not detect active Minio snapshot install. Cleaning up.")
// Minio FS is not longer enabled; clean up and exit
// Not catching the error here, as this is not required to proceed
snapshot.DeleteFileSystemMinio(context.TODO(), deployOptions.Namespace)
return nil
}
if !veleroStatus.ContainsPlugin("local-volume-provider") {
log.Info("velero local-volume-provider plugin is not installed - migration cannot be performed")
log.Info("")
log.Info("---TO INSTALL the local-volume-provider plugin---")
log.Info("For existing cluster installations, complete the installation instructions here:")
log.Info("https://github.com/replicatedhq/local-volume-provider")
log.Info("")
log.Info("If you're seeing this message on an embedded cluster installation, please contact your vendor for support.")
log.Info("")
log.Info("After the plugin has been installed, re-run your upgrade command.")
return errors.New("velero local-volume-provider plugin is not installed - cannot perform migration")
}
previousBsl := bsl.DeepCopy()
previousBackups, err := snapshot.ListAllBackups(context.TODO(), snapshot.ListInstanceBackupsOptions{Namespace: deployOptions.Namespace})
if err != nil {
return errors.Wrap(err, "failed to list existing backups")
}
// Add the config map to configure the new plugin
fsDeployOptions := &snapshot.FileSystemDeployOptions{
Namespace: deployOptions.Namespace,
IsOpenShift: k8sutil.IsOpenShift(clientset),
ForceReset: false,
FileSystemConfig: *prevFsConfig,
}
err = snapshot.EnsureLocalVolumeProviderConfigMaps(*fsDeployOptions, veleroNamespace)
if err != nil {
return errors.Wrap(err, "failed to ensure velero local-volume-provider config map")
}
registryConfig, err := GetRegistryConfigFromCluster(deployOptions.Namespace, clientset)
if err != nil {
return errors.Wrap(err, "failed to get registry options from cluster")
}
start := metav1.Now()
success := false
defer func() {
if !success {
err := snapshot.RevertToMinioFS(context.TODO(), clientset, veleroClient, deployOptions.Namespace, veleroNamespace, previousBsl)
if err != nil {
log.Error(errors.Wrap(err, "Could not restore minio backup storage location"))
return
}
log.Info("Minio backup storage location restored")
err = cleanUpMigrationArtifact(clientset, deployOptions.Namespace)
if err != nil {
log.Error(errors.Wrap(err, "Failed to clean up migration artifact"))
}
}
}()
// New bucket name will be assigned during configuration
storeOptions := snapshot.ConfigureStoreOptions{
Path: "/velero", // Data is not moved from the legacy bucket
FileSystem: prevFsConfig,
KotsadmNamespace: deployOptions.Namespace,
RegistryConfig: ®istryConfig,
IsMinioDisabled: true,
}
if _, err = snapshot.ConfigureStore(context.TODO(), storeOptions); err != nil {
return errors.Wrap(err, "failed to update backup storage location")
}
log.ChildActionWithSpinner("Waiting for the snapshot volume to become available.")
// Wait for the volume to be provisioned (Velero pod will be READY). (Check that the volume is accesible by the Velero pod)
if err = snapshot.WaitForDefaultBslAvailableAndSynced(context.TODO(), veleroNamespace, start); err != nil {
log.FinishChildSpinner()
return errors.Wrap(err, "failed to wait for default backup storage location to be available")
}
log.FinishChildSpinner()
// validate backups
log.Info("Validating backups have migrated")
currentBackups, err := snapshot.ListAllBackups(context.TODO(), snapshot.ListInstanceBackupsOptions{Namespace: deployOptions.Namespace})
if err != nil {
return errors.Wrap(err, "failed to list revised backups")
}
for _, prevBackup := range previousBackups {
if !sliceHasBackup(currentBackups, prevBackup.ObjectMeta.Name) {
return errors.Errorf("failed to find backup %s in the new Velero deployment", prevBackup.Name)
}
}
err = createMigrationArtifact(clientset, deployOptions.Namespace)
if err != nil {
return errors.Wrap(err, "failed to create migration artifact")
}
// Cleanup on success
success = true
log.Info("Migrations successful. Cleaning up Minio resources.")
if err = snapshot.DeleteFileSystemMinio(context.TODO(), deployOptions.Namespace); err != nil {
return errors.Wrap(err, "failed to cleanup fs minio")
}
return nil
}
// sliceHasBackup returns true if a backup with the same name exists in a slice of Velero Backup objects.
func sliceHasBackup(backups []velerov1api.Backup, backupName string) bool {
for _, backup := range backups {
if backup.ObjectMeta.Name == backupName {
return true
}
}
return false
}
func createMigrationArtifact(clientset kubernetes.Interface, namespace string) error {
configMap := &corev1.ConfigMap{
TypeMeta: metav1.TypeMeta{
APIVersion: "v1",
Kind: "ConfigMap",
},
ObjectMeta: metav1.ObjectMeta{
Name: snapshot.SnapshotMigrationArtifactName,
Labels: kotsadmtypes.GetKotsadmLabels(),
},
}
_, err := clientset.CoreV1().ConfigMaps(namespace).Create(context.TODO(), configMap, metav1.CreateOptions{})
if err != nil {
return errors.Wrap(err, "failed to create config map")
}
return nil
}
func cleanUpMigrationArtifact(clientset kubernetes.Interface, namespace string) error {
configMap, err := clientset.CoreV1().ConfigMaps(namespace).Get(context.TODO(), snapshot.SnapshotMigrationArtifactName, metav1.GetOptions{})
if err != nil {
if !kuberneteserrors.IsNotFound(err) {
return errors.Wrap(err, "failed to lookup config map")
}
} else {
err = clientset.CoreV1().ConfigMaps(namespace).Delete(context.TODO(), configMap.Name, metav1.DeleteOptions{})
if err != nil {
return errors.Wrap(err, "failed to delete config map")
}
}
return nil
}
// IsMinioXlMigrationNeeded checks if the minio statefulset needs to be migrated from FS to XL.
// If the minio statefulset exists, it returns a bool indicating whether a migration is needed and the image of the minio container.
// If the minio statefulset does not exist, it returns false and an empty string.
func IsMinioXlMigrationNeeded(clientset kubernetes.Interface, namespace string) (needsMigration bool, minioImage string, err error) {
existingMinio, err := clientset.AppsV1().StatefulSets(namespace).Get(context.TODO(), "kotsadm-minio", metav1.GetOptions{})
if err != nil {
if !kuberneteserrors.IsNotFound(err) {
return false, "", errors.Wrap(err, "failed to get minio statefulset")
}
return false, "", nil
}
minioImage = existingMinio.Spec.Template.Spec.Containers[0].Image
needsMigration, err = imageNeedsMinioXlMigration(minioImage)
if err != nil {
return false, "", errors.Wrap(err, "failed to check if minio needs migration")
}
return needsMigration, minioImage, nil
}
// imageNeedsMinioXlMigration returns true if the minio image is older than the migrate before time (2022-10-29T06-21-33Z).
func imageNeedsMinioXlMigration(minioImage string) (bool, error) {
isCGImage := len(MinioChainguardImageTagRegexp.FindStringSubmatch(minioImage)) > 0
if isCGImage {
// minio images built with chainguard are all new and don't need to be migrated
return false, nil
}
existingImageTagDateMatch := MinioImageTagDateRegexp.FindStringSubmatch(minioImage)
if len(existingImageTagDateMatch) != 2 {
return false, errors.New("failed to parse existing image tag date")
}
existingImageTagDate, err := time.Parse("2006-01-02T15-04-05Z", existingImageTagDateMatch[1])
if err != nil {
return false, errors.Wrap(err, "failed to parse existing image tag date")
}
return existingImageTagDate.Before(MigrateToMinioXlBeforeTime), nil
}
func ensureAndWaitForMinio(ctx context.Context, deployOptions types.DeployOptions, clientset kubernetes.Interface) (finalErr error) {
isMinioXlMigrationRunning, err := IsMinioXlMigrationRunning(ctx, clientset, deployOptions.Namespace)
if err != nil {
return errors.Wrap(err, "failed to check if minio xl migration is running")
}
// if minio xl migration is running, don't update the minio statefulset
if !isMinioXlMigrationRunning {
if err := ensureMinio(deployOptions, clientset); err != nil {
return errors.Wrap(err, "failed to ensure minio")
}
}
defer func() {
if finalErr == nil {
isMinioXlMigrationRunning, err := IsMinioXlMigrationRunning(ctx, clientset, deployOptions.Namespace)
if err != nil {
logger.Error(errors.Wrap(err, "failed to check if minio xl migration is running"))
}
if isMinioXlMigrationRunning {
if err := MarkMinioXlMigrationComplete(ctx, clientset, deployOptions.Namespace); err != nil {
logger.Error(errors.Wrap(err, "failed to mark minio xl migration complete"))
}
}
}
}()
if err := k8sutil.WaitForStatefulSetReady(ctx, clientset, deployOptions.Namespace, "kotsadm-minio", deployOptions.Timeout); err != nil {
return errors.Wrap(err, "failed to wait for minio")
}
return nil
}
func IsMinioXlMigrationRunning(ctx context.Context, clientset kubernetes.Interface, namespace string) (bool, error) {
cm, err := clientset.CoreV1().ConfigMaps(namespace).Get(ctx, MinioXlMigrationStatusConfigmapName, metav1.GetOptions{})
if err != nil {
if !kuberneteserrors.IsNotFound(err) {
return false, errors.Wrapf(err, "failed to get %s configmap", MinioXlMigrationStatusConfigmapName)
}
return false, nil
}
if cm.Data == nil {
return false, nil
}
return cm.Data["status"] == "running", nil
}
func MarkMinioXlMigrationComplete(ctx context.Context, clientset kubernetes.Interface, namespace string) error {
cm, err := clientset.CoreV1().ConfigMaps(namespace).Get(ctx, MinioXlMigrationStatusConfigmapName, metav1.GetOptions{})
if err != nil {
if !kuberneteserrors.IsNotFound(err) {
return errors.Wrapf(err, "failed to get %s configmap", MinioXlMigrationStatusConfigmapName)
}
return nil // no-op
}
if cm.Data == nil {
cm.Data = map[string]string{}
}
cm.Data["status"] = "complete"
_, err = clientset.CoreV1().ConfigMaps(namespace).Update(ctx, cm, metav1.UpdateOptions{})
if err != nil {
return errors.Wrapf(err, "failed to update %s configmap", MinioXlMigrationStatusConfigmapName)
}
return nil
}