/
sanity_check.go
174 lines (143 loc) · 5.42 KB
/
sanity_check.go
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// SPDX-License-Identifier: AGPL-3.0-only
package mimir
import (
"context"
"fmt"
"path/filepath"
"time"
"github.com/go-kit/log"
"github.com/go-kit/log/level"
"github.com/grafana/dskit/backoff"
"github.com/grafana/dskit/multierror"
"github.com/grafana/dskit/runutil"
"github.com/pkg/errors"
alertstorelocal "github.com/grafana/mimir/pkg/alertmanager/alertstore/local"
"github.com/grafana/mimir/pkg/ruler/rulestore"
"github.com/grafana/mimir/pkg/storage/bucket"
"github.com/grafana/mimir/pkg/util/fs"
)
var (
errObjectStorage = "unable to successfully send a request to object storage"
)
type dirExistsFunc func(string) (bool, error)
type isDirReadWritableFunc func(dir string) error
func runSanityCheck(ctx context.Context, cfg Config, logger log.Logger) error {
level.Info(logger).Log("msg", "Checking directories read/write access")
if err := checkDirectoriesReadWriteAccess(cfg, fs.DirExists, fs.IsDirReadWritable); err != nil {
level.Error(logger).Log("msg", "Unable to access directory", "err", err)
return err
}
level.Info(logger).Log("msg", "Directories read/write access successfully checked")
level.Info(logger).Log("msg", "Checking object storage config")
if err := checkObjectStoresConfigWithRetries(ctx, cfg, logger); err != nil {
level.Error(logger).Log("msg", "Unable to successfully connect to configured object storage", "err", err)
return err
}
level.Info(logger).Log("msg", "Object storage config successfully checked")
return nil
}
func checkDirectoriesReadWriteAccess(
cfg Config,
dirExistFn dirExistsFunc,
isDirReadWritableFn isDirReadWritableFunc,
) error {
errs := multierror.New()
if cfg.isAnyModuleEnabled(All, Ingester, Write) {
errs.Add(errors.Wrap(checkDirReadWriteAccess(cfg.Ingester.BlocksStorageConfig.TSDB.Dir, dirExistFn, isDirReadWritableFn), "ingester"))
}
if cfg.isAnyModuleEnabled(All, StoreGateway, Backend) {
errs.Add(errors.Wrap(checkDirReadWriteAccess(cfg.BlocksStorage.BucketStore.SyncDir, dirExistFn, isDirReadWritableFn), "store-gateway"))
}
if cfg.isAnyModuleEnabled(All, Compactor, Backend) {
errs.Add(errors.Wrap(checkDirReadWriteAccess(cfg.Compactor.DataDir, dirExistFn, isDirReadWritableFn), "compactor"))
}
if cfg.isAnyModuleEnabled(All, Ruler, Backend) {
errs.Add(errors.Wrap(checkDirReadWriteAccess(cfg.Ruler.RulePath, dirExistFn, isDirReadWritableFn), "ruler"))
}
if cfg.isAnyModuleEnabled(AlertManager, Backend) {
errs.Add(errors.Wrap(checkDirReadWriteAccess(cfg.Alertmanager.DataDir, dirExistFn, isDirReadWritableFn), "alertmanager"))
}
return errs.Err()
}
func checkDirReadWriteAccess(dir string, dirExistFn dirExistsFunc, isDirReadWritableFn isDirReadWritableFunc) error {
d := dir
for {
exists, err := dirExistFn(d)
if err != nil {
return err
}
if exists {
break
}
dNext := filepath.Dir(d)
if d == dNext {
break // Root path reached.
}
d = dNext
}
if err := isDirReadWritableFn(d); err != nil {
return fmt.Errorf("failed to access directory %s: %w", dir, err)
}
return nil
}
func checkObjectStoresConfigWithRetries(ctx context.Context, cfg Config, logger log.Logger) (err error) {
const maxRetries = 20
backoff := backoff.New(ctx, backoff.Config{
MinBackoff: time.Second,
MaxBackoff: 5 * time.Second,
MaxRetries: maxRetries,
})
for backoff.Ongoing() {
err = checkObjectStoresConfig(ctx, cfg, logger)
if err == nil {
return nil
}
if backoff.NumRetries() < maxRetries-1 {
level.Warn(logger).Log("msg", "Unable to successfully connect to configured object storage (will retry)", "err", err)
} else {
level.Warn(logger).Log("msg", "Unable to successfully connect to configured object storage", "err", err)
}
backoff.Wait()
}
return err
}
func checkObjectStoresConfig(ctx context.Context, cfg Config, logger log.Logger) error {
errs := multierror.New()
// Check blocks storage config only if running at least one component using it.
if cfg.isAnyModuleEnabled(All, Ingester, Querier, Ruler, StoreGateway, Compactor, Write, Read, Backend) {
errs.Add(errors.Wrap(checkObjectStoreConfig(ctx, cfg.BlocksStorage.Bucket, logger), "blocks storage"))
}
// Check alertmanager storage config.
if cfg.isAnyModuleEnabled(AlertManager, Backend) && cfg.AlertmanagerStorage.Backend != alertstorelocal.Name {
errs.Add(errors.Wrap(checkObjectStoreConfig(ctx, cfg.AlertmanagerStorage.Config, logger), "alertmanager storage"))
}
// Check ruler storage config.
if cfg.isAnyModuleEnabled(All, Ruler, Backend) && cfg.RulerStorage.Backend != rulestore.BackendLocal {
errs.Add(errors.Wrap(checkObjectStoreConfig(ctx, cfg.RulerStorage.Config, logger), "ruler storage"))
}
return errs.Err()
}
func checkObjectStoreConfig(ctx context.Context, cfg bucket.Config, logger log.Logger) error {
// Hardcoded but relatively high timeout.
ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
defer cancel()
client, err := bucket.NewClient(ctx, cfg, "sanity-check", logger, nil)
if err != nil {
return errors.Wrap(err, errObjectStorage)
}
defer func() {
// Ensure the client gets closed. Ignore the returned error here.
_ = client.Close()
}()
// Read an object we don't expect to exist, just to check if the object storage
// replies with the expected error.
reader, err := client.Get(ctx, "sanity-check-at-startup")
if err != nil {
if client.IsObjNotFoundErr(err) {
return nil
}
return errors.Wrap(err, errObjectStorage)
}
runutil.ExhaustCloseWithErrCapture(&err, reader, "error while reading from object store")
return err
}