pingcap · 3pointer · Apr 2, 2020 · Jan 22, 2020 · Feb 1, 2020 · Feb 5, 2020
diff --git a/README.md b/README.md
@@ -56,7 +56,7 @@ go-ycsb load mysql -p workload=core \
 mysql -uroot -htidb -P4000 -E -e "SELECT COUNT(*) FROM test.usertable"
 
 # Build BR and backup!
-make release && \
+make build && \
 bin/br backup full --pd pd0:2379 --storage "local:///data/backup/full" \
     --log-file "/logs/br_backup.log"
 
@@ -69,6 +69,20 @@ bin/br restore full --pd pd0:2379 --storage "local:///data/backup/full" \
 
 # How many rows do we get again? Expected to be 100000 rows.
 mysql -uroot -htidb -P4000 -E -e "SELECT COUNT(*) FROM test.usertable"
+
+# Test S3 compatible storage (MinIO).
+# Create a bucket to save backup by mc (a MinIO Client).
+mc config host add minio $S3_ENDPOINT $MINIO_ACCESS_KEY $MINIO_SECRET_KEY && \
+mc mb minio/mybucket
+
+# Backup to S3 compatible storage.
+bin/br backup full --pd pd0:2379 --storage "s3://mybucket/full" \
+    --s3.endpoint="$S3_ENDPOINT"
+
+# Drop database and restore!
+mysql -uroot -htidb -P4000 -E -e "DROP DATABASE test; SHOW DATABASES;" && \
+bin/br restore full --pd pd0:2379 --storage "s3://mybucket/full" \
+    --s3.endpoint="$S3_ENDPOINT"
 ```
 
 ## Contributing

diff --git a/cmd/backup.go b/cmd/backup.go
@@ -16,6 +16,7 @@ import (
 func runBackupCommand(command *cobra.Command, cmdName string) error {
 	cfg := task.BackupConfig{Config: task.Config{LogProgress: HasLogFile()}}
 	if err := cfg.ParseFromFlags(command.Flags()); err != nil {
+		command.SilenceUsage = false
 		return err
 	}
 	return task.RunBackup(GetDefaultContext(), tidbGlue, cmdName, &cfg)
@@ -24,6 +25,7 @@ func runBackupCommand(command *cobra.Command, cmdName string) error {
 func runBackupRawCommand(command *cobra.Command, cmdName string) error {
 	cfg := task.RawKvConfig{Config: task.Config{LogProgress: HasLogFile()}}
 	if err := cfg.ParseFromFlags(command.Flags()); err != nil {
+		command.SilenceUsage = false
 		return err
 	}
 	return task.RunBackupRaw(GetDefaultContext(), gluetikv.Glue{}, cmdName, &cfg)
@@ -34,7 +36,7 @@ func NewBackupCommand() *cobra.Command {
 	command := &cobra.Command{
 		Use:          "backup",
 		Short:        "backup a TiDB/TiKV cluster",
-		SilenceUsage: false,
+		SilenceUsage: true,
 		PersistentPreRunE: func(c *cobra.Command, args []string) error {
 			if err := Init(c); err != nil {
 				return err

diff --git a/cmd/cmd.go b/cmd/cmd.go
@@ -6,8 +6,11 @@ import (
 	"context"
 	"net/http"
 	"net/http/pprof"
+	"os"
+	"path/filepath"
 	"sync"
 	"sync/atomic"
+	"time"
 
 	"github.com/pingcap/log"
 	"github.com/pingcap/tidb/util/logutil"
@@ -16,15 +19,17 @@ import (
 	"go.uber.org/zap"
 
 	"github.com/pingcap/br/pkg/gluetidb"
+	"github.com/pingcap/br/pkg/summary"
 	"github.com/pingcap/br/pkg/task"
 	"github.com/pingcap/br/pkg/utils"
 )
 
 var (
-	initOnce       = sync.Once{}
-	defaultContext context.Context
-	hasLogFile     uint64
-	tidbGlue       = gluetidb.Glue{}
+	initOnce        = sync.Once{}
+	defaultContext  context.Context
+	hasLogFile      uint64
+	tidbGlue        = gluetidb.Glue{}
+	envLogToTermKey = "BR_LOG_TO_TERM"
 )
 
 const (
@@ -41,6 +46,10 @@ const (
 	flagVersionShort = "V"
 )
 
+func timestampLogFileName() string {
+	return filepath.Join(os.TempDir(), "br.log."+time.Now().Format(time.RFC3339))
+}
+
 // AddFlags adds flags to the given cmd.
 func AddFlags(cmd *cobra.Command) {
 	cmd.Version = utils.BRInfo()
@@ -49,8 +58,8 @@ func AddFlags(cmd *cobra.Command) {
 
 	cmd.PersistentFlags().StringP(FlagLogLevel, "L", "info",
 		"Set the log level")
-	cmd.PersistentFlags().String(FlagLogFile, "",
-		"Set the log file path. If not set, logs will output to stdout")
+	cmd.PersistentFlags().String(FlagLogFile, timestampLogFileName(),
+		"Set the log file path. If not set, logs will output to temp file")
 	cmd.PersistentFlags().String(FlagStatusAddr, "",
 		"Set the HTTP listening address for the status report service. Set to empty string to disable")
 	task.DefineCommonFlags(cmd.PersistentFlags())
@@ -73,8 +82,15 @@ func Init(cmd *cobra.Command) (err error) {
 		if err != nil {
 			return
 		}
+		_, outputLogToTerm := os.LookupEnv(envLogToTermKey)
+		if outputLogToTerm {
+			// Log to term if env `BR_LOG_TO_TERM` is set.
+			conf.File.Filename = ""
+		}
 		if len(conf.File.Filename) != 0 {
 			atomic.StoreUint64(&hasLogFile, 1)
+			summary.InitCollector(true)
+			cmd.Printf("Detial BR log in %s\n", conf.File.Filename)
 		}
 		lg, p, e := log.InitLogger(conf)
 		if e != nil {

diff --git a/cmd/restore.go b/cmd/restore.go
@@ -15,6 +15,7 @@ import (
 func runRestoreCommand(command *cobra.Command, cmdName string) error {
 	cfg := task.RestoreConfig{Config: task.Config{LogProgress: HasLogFile()}}
 	if err := cfg.ParseFromFlags(command.Flags()); err != nil {
+		command.SilenceUsage = false
 		return err
 	}
 	return task.RunRestore(GetDefaultContext(), tidbGlue, cmdName, &cfg)
@@ -25,6 +26,7 @@ func runRestoreRawCommand(command *cobra.Command, cmdName string) error {
 		RawKvConfig: task.RawKvConfig{Config: task.Config{LogProgress: HasLogFile()}},
 	}
 	if err := cfg.ParseFromFlags(command.Flags()); err != nil {
+		command.SilenceUsage = false
 		return err
 	}
 	return task.RunRestoreRaw(GetDefaultContext(), gluetikv.Glue{}, cmdName, &cfg)
@@ -33,6 +35,7 @@ func runRestoreRawCommand(command *cobra.Command, cmdName string) error {
 func runRestoreTiflashReplicaCommand(command *cobra.Command, cmdName string) error {
 	cfg := task.RestoreConfig{Config: task.Config{LogProgress: HasLogFile()}}
 	if err := cfg.ParseFromFlags(command.Flags()); err != nil {
+		command.SilenceUsage = false
 		return err
 	}
 
@@ -44,7 +47,7 @@ func NewRestoreCommand() *cobra.Command {
 	command := &cobra.Command{
 		Use:          "restore",
 		Short:        "restore a TiDB/TiKV cluster",
-		SilenceUsage: false,
+		SilenceUsage: true,
 		PersistentPreRunE: func(c *cobra.Command, args []string) error {
 			if err := Init(c); err != nil {
 				return err

diff --git a/docker-compose.yaml b/docker-compose.yaml
@@ -1,6 +1,6 @@
 ---
 # Source: tidb-docker-compose/templates/docker-compose.yml
-version: '2.1'
+version: '3.2'
 
 services:
   control:
@@ -10,11 +10,13 @@ services:
       dockerfile: ./docker/Dockerfile
     volumes:
       - ./docker/data:/data
-      - ./docker/logs:/logs
+      - ./docker/logs:/tmp
     command: -c "/usr/bin/tail -f /dev/null"
     depends_on:
       - "tidb"
     restart: on-failure
+    env_file:
+      - ./docker/minio.env
 
   pd0:
     image: pingcap/pd:latest
@@ -64,6 +66,8 @@ services:
     #     soft: 1000000
     #     hard: 1000000
     restart: on-failure
+    env_file:
+      - ./docker/minio.env
 
   tikv1:
     image: pingcap/tikv:latest
@@ -87,6 +91,8 @@ services:
     #     soft: 1000000
     #     hard: 1000000
     restart: on-failure
+    env_file:
+      - ./docker/minio.env
 
   tikv2:
     image: pingcap/tikv:latest
@@ -110,6 +116,8 @@ services:
     #     soft: 1000000
     #     hard: 1000000
     restart: on-failure
+    env_file:
+      - ./docker/minio.env
 
   tikv3:
     image: pingcap/tikv:latest
@@ -133,6 +141,8 @@ services:
     #     soft: 1000000
     #     hard: 1000000
     restart: on-failure
+    env_file:
+      - ./docker/minio.env
 
   tikv4:
     image: pingcap/tikv:latest
@@ -156,6 +166,8 @@ services:
     #     soft: 1000000
     #     hard: 1000000
     restart: on-failure
+    env_file:
+      - ./docker/minio.env
 
   tidb:
     image: pingcap/tidb:latest
@@ -185,6 +197,16 @@ services:
     #     hard: 1000000
     restart: on-failure
 
+  minio:
+    image: minio/minio
+    ports:
+      - 24927:24927
+    volumes:
+      - ./docker/data/s3:/data/s3
+    command: server --address=:24927 /data/s3
+    env_file:
+      - ./docker/minio.env
+
   tidb-vision:
     image: pingcap/tidb-vision:latest
     environment:

diff --git a/docker/Dockerfile b/docker/Dockerfile
@@ -1,11 +1,13 @@
-FROM golang:1.13.8-buster as builder
-
 # For loading data to TiDB
+FROM golang:1.13.8-buster as go-ycsb-builder
 WORKDIR /go/src/github.com/pingcap/
 RUN git clone https://github.com/pingcap/go-ycsb.git && \
     cd go-ycsb && \
     make
 
+# For operating minio S3 compatible storage
+FROM minio/mc as mc-builder
+
 FROM golang:1.13.8-buster
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
@@ -19,6 +21,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 WORKDIR /go/src/github.com/pingcap/br
 COPY . .
 
-COPY --from=builder /go/src/github.com/pingcap/go-ycsb/bin/go-ycsb /go/bin/go-ycsb
+COPY --from=go-ycsb-builder /go/src/github.com/pingcap/go-ycsb/bin/go-ycsb /go/bin/go-ycsb
+COPY --from=mc-builder /usr/bin/mc /usr/bin/mc
 
 ENTRYPOINT ["/bin/bash"]
diff --git a/docker/minio.env b/docker/minio.env
@@ -0,0 +1,6 @@
+MINIO_ACCESS_KEY=brs3accesskey
+MINIO_SECRET_KEY=brs3secretkey
+MINIO_BROWSER=off
+AWS_ACCESS_KEY_ID=brs3accesskey
+AWS_SECRET_ACCESS_KEY=brs3secretkey
+S3_ENDPOINT=http://minio:24927
diff --git a/go.mod b/go.mod
@@ -21,11 +21,11 @@ require (
 	github.com/onsi/gomega v1.8.1 // indirect
 	github.com/pingcap/check v0.0.0-20200212061837-5e12011dc712
 	github.com/pingcap/errors v0.11.5-0.20190809092503-95897b64e011
-	github.com/pingcap/kvproto v0.0.0-20200317112120-78042b285b75
+	github.com/pingcap/kvproto v0.0.0-20200330093347-98f910b71904
 	github.com/pingcap/log v0.0.0-20200117041106-d28c14d3b1cd
-	github.com/pingcap/parser v0.0.0-20200305120128-bde9faa0df84
+	github.com/pingcap/parser v0.0.0-20200326020624-68d423641be5
 	github.com/pingcap/pd/v4 v4.0.0-beta.1.0.20200305072537-61d9f9cc35d3
-	github.com/pingcap/tidb v1.1.0-beta.0.20200310133602-7c39e5e5e0bc
+	github.com/pingcap/tidb v0.0.0-20200401141416-959eca8f3a39
 	github.com/pingcap/tidb-tools v4.0.0-beta.1.0.20200306084441-875bd09aa3d5+incompatible
 	github.com/pingcap/tipb v0.0.0-20200212061130-c4d518eb1d60
 	github.com/prometheus/client_golang v1.0.0
@@ -37,7 +37,7 @@ require (
 	github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5 // indirect
 	go.etcd.io/etcd v0.5.0-alpha.5.0.20191023171146-3cf2f69b5738
 	go.opencensus.io v0.22.2 // indirect
-	go.uber.org/zap v1.14.0
+	go.uber.org/zap v1.14.1
 	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
 	google.golang.org/api v0.14.0
 	google.golang.org/grpc v1.25.1

diff --git a/go.sum b/go.sum
@@ -363,25 +363,23 @@ github.com/pingcap/goleveldb v0.0.0-20191226122134-f82aafb29989/go.mod h1:O17Xtb
 github.com/pingcap/kvproto v0.0.0-20191211054548-3c6b38ea5107/go.mod h1:WWLmULLO7l8IOcQG+t+ItJ3fEcrL5FxF0Wu+HrMy26w=
 github.com/pingcap/kvproto v0.0.0-20200214064158-62d31900d88e/go.mod h1:IOdRDPLyda8GX2hE/jO7gqaCV/PNFh8BZQCQZXfIOqI=
 github.com/pingcap/kvproto v0.0.0-20200221034943-a2aa1d1e20a8/go.mod h1:IOdRDPLyda8GX2hE/jO7gqaCV/PNFh8BZQCQZXfIOqI=
-github.com/pingcap/kvproto v0.0.0-20200228095611-2cf9a243b8d5 h1:knEvP4R5v5b2T107/Q6VzB0C8/6T7NXB/V7Vl1FtQsg=
-github.com/pingcap/kvproto v0.0.0-20200228095611-2cf9a243b8d5/go.mod h1:IOdRDPLyda8GX2hE/jO7gqaCV/PNFh8BZQCQZXfIOqI=
-github.com/pingcap/kvproto v0.0.0-20200317112120-78042b285b75 h1:DB3NTM0ilba/6sW+vccdEnP10bVvrVunDwWvRa0hSKc=
-github.com/pingcap/kvproto v0.0.0-20200317112120-78042b285b75/go.mod h1:IOdRDPLyda8GX2hE/jO7gqaCV/PNFh8BZQCQZXfIOqI=
+github.com/pingcap/kvproto v0.0.0-20200330093347-98f910b71904 h1:pMFUXvhJ62hX8m0Q4RsL7L+hSW1mAMG26So5eFMoAtI=
+github.com/pingcap/kvproto v0.0.0-20200330093347-98f910b71904/go.mod h1:IOdRDPLyda8GX2hE/jO7gqaCV/PNFh8BZQCQZXfIOqI=
 github.com/pingcap/log v0.0.0-20191012051959-b742a5d432e9 h1:AJD9pZYm72vMgPcQDww9rkZ1DnWfl0pXV3BOWlkYIjA=
 github.com/pingcap/log v0.0.0-20191012051959-b742a5d432e9/go.mod h1:4rbK1p9ILyIfb6hU7OG2CiWSqMXnp3JMbiaVJ6mvoY8=
 github.com/pingcap/log v0.0.0-20200117041106-d28c14d3b1cd h1:CV3VsP3Z02MVtdpTMfEgRJ4T9NGgGTxdHpJerent7rM=
 github.com/pingcap/log v0.0.0-20200117041106-d28c14d3b1cd/go.mod h1:4rbK1p9ILyIfb6hU7OG2CiWSqMXnp3JMbiaVJ6mvoY8=
-github.com/pingcap/parser v0.0.0-20200305120128-bde9faa0df84 h1:u5FOwUw9muF8mBTZVV1dQhoAKiEo2Ci54CxN9XchEEY=
-github.com/pingcap/parser v0.0.0-20200305120128-bde9faa0df84/go.mod h1:9v0Edh8IbgjGYW2ArJr19E+bvL8zKahsFp+ixWeId+4=
+github.com/pingcap/parser v0.0.0-20200326020624-68d423641be5 h1:fXVqoeYfV+xI8K2he5NNv00c6YksrjeM6+vkNo1ZK2Q=
+github.com/pingcap/parser v0.0.0-20200326020624-68d423641be5/go.mod h1:9v0Edh8IbgjGYW2ArJr19E+bvL8zKahsFp+ixWeId+4=
 github.com/pingcap/pd/v4 v4.0.0-beta.1.0.20200305072537-61d9f9cc35d3 h1:Yrp99FnjHAEuDrSBql2l0IqCtJX7KwJbTsD5hIArkvk=
 github.com/pingcap/pd/v4 v4.0.0-beta.1.0.20200305072537-61d9f9cc35d3/go.mod h1:25GfNw6+Jcr9kca5rtmTb4gKCJ4jOpow2zV2S9Dgafs=
 github.com/pingcap/sysutil v0.0.0-20200206130906-2bfa6dc40bcd/go.mod h1:EB/852NMQ+aRKioCpToQ94Wl7fktV+FNnxf3CX/TTXI=
 github.com/pingcap/sysutil v0.0.0-20200302022240-21c8c70d0ab1 h1:YUnUZ914SHFMsOSe/xgH5DKK/thtRma8X8hcszRo3CA=
 github.com/pingcap/sysutil v0.0.0-20200302022240-21c8c70d0ab1/go.mod h1:EB/852NMQ+aRKioCpToQ94Wl7fktV+FNnxf3CX/TTXI=
 github.com/pingcap/sysutil v0.0.0-20200309085538-962fd285f3bb h1:bDbgLaNTRNK6Qw7KjvEqqfCQstY8WMEcXyXTU7yzYKg=
 github.com/pingcap/sysutil v0.0.0-20200309085538-962fd285f3bb/go.mod h1:EB/852NMQ+aRKioCpToQ94Wl7fktV+FNnxf3CX/TTXI=
-github.com/pingcap/tidb v1.1.0-beta.0.20200310133602-7c39e5e5e0bc h1:1aW3qTRJZjnosvXt1b75KL73b28XRJWBx6jtTtHsybg=
-github.com/pingcap/tidb v1.1.0-beta.0.20200310133602-7c39e5e5e0bc/go.mod h1:WTmfs5zrUGMPw3Enn5FI3buzkU8BDuJ6BhsO/JC239U=
+github.com/pingcap/tidb v0.0.0-20200401141416-959eca8f3a39 h1:nYRL69Qc4kuvp+tlDNB5wXjvDetX0J7g0DsW4RQxfXM=
+github.com/pingcap/tidb v0.0.0-20200401141416-959eca8f3a39/go.mod h1:btnHsqUQvJnY18+OP2Z6MCRq1tX4B8JUCrmqctSKxOg=
 github.com/pingcap/tidb-tools v4.0.0-beta.1.0.20200306084441-875bd09aa3d5+incompatible h1:84F7MFMfdAYObrznvRslmVu43aoihrlL+7mMyMlOi0o=
 github.com/pingcap/tidb-tools v4.0.0-beta.1.0.20200306084441-875bd09aa3d5+incompatible/go.mod h1:XGdcy9+yqlDSEMTpOXnwf3hiTeqrV6MN/u1se9N8yIM=
 github.com/pingcap/tipb v0.0.0-20190428032612-535e1abaa330/go.mod h1:RtkHW8WbcNxj8lsbzjaILci01CtYnYbIkQhjyZWrWVI=
@@ -501,6 +499,7 @@ github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
 github.com/yookoala/realpath v1.0.0 h1:7OA9pj4FZd+oZDsyvXWQvjn5oBdcHRTV44PpdMSuImQ=
 github.com/yookoala/realpath v1.0.0/go.mod h1:gJJMA9wuX7AcqLy1+ffPatSCySA1FQ2S8Ya9AIoYBpE=
+github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 go.etcd.io/bbolt v1.3.3 h1:MUGmc65QhB3pIlaQ5bB4LwqSj6GIonVJXpZiaKNyaKk=
 go.etcd.io/bbolt v1.3.3/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.etcd.io/etcd v0.0.0-20191023171146-3cf2f69b5738/go.mod h1:dnLIgRNXwCJa5e+c6mIZCrds/GIG4ncV9HhK5PX7jPg=
@@ -535,8 +534,8 @@ go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 go.uber.org/zap v1.12.0 h1:dySoUQPFBGj6xwjmBzageVL8jGi8uxc6bEmJQjA06bw=
 go.uber.org/zap v1.12.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM=
 go.uber.org/zap v1.13.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM=
-go.uber.org/zap v1.14.0 h1:/pduUoebOeeJzTDFuoMgC6nRkiasr1sBCIEorly7m4o=
-go.uber.org/zap v1.14.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM=
+go.uber.org/zap v1.14.1 h1:nYDKopTbvAPq/NrUVZwT15y2lpROBiLLyoRTbXOYWOo=
+go.uber.org/zap v1.14.1/go.mod h1:Mb2vm2krFEG5DV0W9qcHBYFtp/Wku1cvYaqPsS/WYfc=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
@@ -676,8 +675,8 @@ golang.org/x/tools v0.0.0-20191130070609-6e064ea0cf2d/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200301222351-066e0c02454c h1:FD7jysxM+EJqg5UYYy3XYDsAiUickFsn4UiaanJkf8c=
 golang.org/x/tools v0.0.0-20200301222351-066e0c02454c/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
-golang.org/x/tools v0.0.0-20200304193943-95d2e580d8eb h1:iKlO7ROJc6SttHKlxzwGytRtBUqX4VARrNTgP2YLX5M=
-golang.org/x/tools v0.0.0-20200304193943-95d2e580d8eb/go.mod h1:o4KQGtdN14AW+yjsvvwRTJJuXz8XRtIHtEnmAXLyFUw=
+golang.org/x/tools v0.0.0-20200325203130-f53864d0dba1 h1:odiryKYJy7CjdrZxhrcE1Z8L9+kGyGZOnfpuauvdCeU=
+golang.org/x/tools v0.0.0-20200325203130-f53864d0dba1/go.mod h1:Sl4aGygMT6LrqrWclx+PTx3U+LnKx/seiNR+3G19Ar8=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898 h1:/atklqdjdhuosWIl6AIbOeHJjicWYPqR9bpxqxYG2pA=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

diff --git a/main.go b/main.go
@@ -41,7 +41,7 @@ func main() {
 		Use:              "br",
 		Short:            "br is a TiDB/TiKV cluster backup restore tool.",
 		TraverseChildren: true,
-		SilenceUsage:     false,
+		SilenceUsage:     true,
 	}
 	cmd.AddFlags(rootCmd)
 	cmd.SetDefaultContext(ctx)