diff --git a/cmd/benchdb/main.go b/cmd/benchdb/main.go
index 54dacd9bcfbc5..d5d4a98d45c7c 100644
--- a/cmd/benchdb/main.go
+++ b/cmd/benchdb/main.go
@@ -54,9 +54,7 @@ var (
 func main() {
 	flag.Parse()
 	flag.PrintDefaults()
-	err := logutil.InitLogger(&logutil.LogConfig{
-		Level: *logLevel,
-	})
+	err := logutil.InitLogger(logutil.NewLogConfig(*logLevel, logutil.DefaultLogFormat, "", logutil.EmptyFileLogConfig, false))
 	terror.MustNil(err)
 	err = session.RegisterStore("tikv", tikv.Driver{})
 	terror.MustNil(err)
diff --git a/cmd/benchfilesort/main.go b/cmd/benchfilesort/main.go
index 08c16353a58fd..3c6f30827861d 100644
--- a/cmd/benchfilesort/main.go
+++ b/cmd/benchfilesort/main.go
@@ -382,9 +382,7 @@ func driveRunCmd() {
 }
 
 func init() {
-	err := logutil.InitLogger(&logutil.LogConfig{
-		Level: logLevel,
-	})
+	err := logutil.InitLogger(logutil.NewLogConfig(logLevel, logutil.DefaultLogFormat, "", logutil.EmptyFileLogConfig, false))
 	terror.MustNil(err)
 	cwd, err1 := os.Getwd()
 	terror.MustNil(err1)
diff --git a/cmd/explaintest/main.go b/cmd/explaintest/main.go
index e896da887546d..b1e37b27e1620 100644
--- a/cmd/explaintest/main.go
+++ b/cmd/explaintest/main.go
@@ -624,9 +624,7 @@ func openDBWithRetry(driverName, dataSourceName string) (mdb *sql.DB, err error)
 func main() {
 	flag.Parse()
 
-	err := logutil.InitLogger(&logutil.LogConfig{
-		Level: logLevel,
-	})
+	err := logutil.InitLogger(logutil.NewLogConfig(logLevel, logutil.DefaultLogFormat, "", logutil.EmptyFileLogConfig, false))
 	if err != nil {
 		panic("init logger fail, " + err.Error())
 	}
diff --git a/config/config.go b/config/config.go
index 00ed533d0591c..14d14efe7306d 100644
--- a/config/config.go
+++ b/config/config.go
@@ -290,12 +290,9 @@ var defaultConf = Config{
 	},
 	LowerCaseTableNames: 2,
 	Log: Log{
-		Level:  "info",
-		Format: "text",
-		File: logutil.FileLogConfig{
-			LogRotate: true,
-			MaxSize:   logutil.DefaultLogMaxSize,
-		},
+		Level:              "info",
+		Format:             "text",
+		File:               logutil.NewFileLogConfig(true, logutil.DefaultLogMaxSize),
 		SlowThreshold:      logutil.DefaultSlowThreshold,
 		ExpensiveThreshold: 10000,
 		QueryLogMaxLen:     logutil.DefaultQueryLogMaxLen,
@@ -375,13 +372,7 @@ func (c *Config) Load(confFile string) error {
 
 // ToLogConfig converts *Log to *logutil.LogConfig.
 func (l *Log) ToLogConfig() *logutil.LogConfig {
-	return &logutil.LogConfig{
-		Level:            l.Level,
-		Format:           l.Format,
-		DisableTimestamp: l.DisableTimestamp,
-		File:             l.File,
-		SlowQueryFile:    l.SlowQueryFile,
-	}
+	return logutil.NewLogConfig(l.Level, l.Format, l.SlowQueryFile, l.File, l.DisableTimestamp)
 }
 
 // ToTracingConfig converts *OpenTracing to *tracing.Configuration.
diff --git a/ddl/ddl_test.go b/ddl/ddl_test.go
index 80a1a57432267..7c43e3a6d4191 100644
--- a/ddl/ddl_test.go
+++ b/ddl/ddl_test.go
@@ -101,10 +101,7 @@ func (d *ddl) restartWorkers(ctx context.Context) {
 func TestT(t *testing.T) {
 	CustomVerboseFlag = true
 	logLevel := os.Getenv("log_level")
-	logutil.InitLogger(&logutil.LogConfig{
-		Level:  logLevel,
-		Format: "highlight",
-	})
+	logutil.InitLogger(logutil.NewLogConfig(logLevel, "highlight", "", logutil.EmptyFileLogConfig, false))
 	TestingT(t)
 }
 
diff --git a/distsql/request_builder_test.go b/distsql/request_builder_test.go
index 640127f163594..b64dd63218892 100644
--- a/distsql/request_builder_test.go
+++ b/distsql/request_builder_test.go
@@ -37,9 +37,7 @@ var _ = Suite(&testSuite{})
 func TestT(t *testing.T) {
 	CustomVerboseFlag = true
 	logLevel := os.Getenv("log_level")
-	logutil.InitLogger(&logutil.LogConfig{
-		Level: logLevel,
-	})
+	logutil.InitLogger(logutil.NewLogConfig(logLevel, logutil.DefaultLogFormat, "", logutil.EmptyFileLogConfig, false))
 	TestingT(t)
 }
 
diff --git a/executor/executor_test.go b/executor/executor_test.go
index 4789fd6393a0f..bc2163d8ee821 100644
--- a/executor/executor_test.go
+++ b/executor/executor_test.go
@@ -69,9 +69,7 @@ import (
 func TestT(t *testing.T) {
 	CustomVerboseFlag = true
 	logLevel := os.Getenv("log_level")
-	logutil.InitLogger(&logutil.LogConfig{
-		Level: logLevel,
-	})
+	logutil.InitLogger(logutil.NewLogConfig(logLevel, logutil.DefaultLogFormat, "", logutil.EmptyFileLogConfig, false))
 	TestingT(t)
 }
 
diff --git a/go.mod b/go.mod
index ff7092d5fe2ea..cb31d8f00fd52 100644
--- a/go.mod
+++ b/go.mod
@@ -45,30 +45,29 @@ require (
 	github.com/onsi/gomega v1.4.1 // indirect
 	github.com/opentracing/basictracer-go v1.0.0
 	github.com/opentracing/opentracing-go v1.0.2
-	github.com/pingcap/check v0.0.0-20171206051426-1c287c953996
+	github.com/pingcap/check v0.0.0-20190102082844-67f458068fc8
 	github.com/pingcap/errors v0.11.1
 	github.com/pingcap/gofail v0.0.0-20181217135706-6a951c1e42c3
 	github.com/pingcap/goleveldb v0.0.0-20171020084629-8d44bfdf1030
 	github.com/pingcap/kvproto v0.0.0-20190226063853-f6c0b7ffff11
+	github.com/pingcap/log v0.0.0-20190214045112-b37da76f67a7
 	github.com/pingcap/parser v0.0.0-20190328044348-9945885931bb
 	github.com/pingcap/pd v2.1.0-rc.4+incompatible
 	github.com/pingcap/tidb-tools v2.1.3-0.20190116051332-34c808eef588+incompatible
 	github.com/pingcap/tipb v0.0.0-20180910045846-371b48b15d93
-	github.com/pkg/errors v0.8.0 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_golang v0.8.0
 	github.com/prometheus/client_model v0.0.0-20171117100541-99fa1f4be8e5
 	github.com/prometheus/common v0.0.0-20180426121432-d811d2e9bf89
 	github.com/prometheus/procfs v0.0.0-20180408092902-8b1c2da0d56d // indirect
 	github.com/sirupsen/logrus v0.0.0-20170323161349-3bcb09397d6d
 	github.com/spaolacci/murmur3 v0.0.0-20150829172844-0d12bf811670
-	github.com/stretchr/testify v1.2.2 // indirect
 	github.com/twinj/uuid v0.0.0-20150629100731-70cac2bcd273
 	github.com/uber/jaeger-client-go v2.8.0+incompatible
 	github.com/uber/jaeger-lib v1.1.0 // indirect
 	github.com/ugorji/go v1.1.1 // indirect
 	github.com/unrolled/render v0.0.0-20171102162132-65450fb6b2d3 // indirect
 	github.com/xiang90/probing v0.0.0-20160813154853-07dd2e8dfe18 // indirect
+	go.uber.org/zap v1.9.1
 	golang.org/x/crypto v0.0.0-20180503215945-1f94bef427e3 // indirect
 	golang.org/x/net v0.0.0-20180906233101-161cd47e91fd
 	golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f // indirect
@@ -80,7 +79,6 @@ require (
 	google.golang.org/grpc v1.12.0
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6 // indirect
 	gopkg.in/fsnotify.v1 v1.4.7 // indirect
-	gopkg.in/natefinch/lumberjack.v2 v2.0.0-20161104145732-dd45e6a67c53
+	gopkg.in/natefinch/lumberjack.v2 v2.0.0
 	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
-	gopkg.in/yaml.v2 v2.2.1 // indirect
 )
diff --git a/go.sum b/go.sum
index 2d92fb6374619..4338585ddd936 100644
--- a/go.sum
+++ b/go.sum
@@ -28,6 +28,7 @@ github.com/cznic/mathutil v0.0.0-20160613104831-78ad7f262603 h1:hhR9hTi0ligs11Jj
 github.com/cznic/mathutil v0.0.0-20160613104831-78ad7f262603/go.mod h1:e6NPNENfs9mPDVNRekM7lKScauxd5kXTr1Mfyig6TDM=
 github.com/cznic/sortutil v0.0.0-20150617083342-4c7342852e65 h1:hxuZop6tSoOi0sxFzoGGYdRqNrPubyaIf9KoBG9tPiE=
 github.com/cznic/sortutil v0.0.0-20150617083342-4c7342852e65/go.mod h1:q2w6Bg5jeox1B+QkJ6Wp/+Vn0G/bo3f1uY7Fn3vivIQ=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
@@ -88,6 +89,7 @@ github.com/opentracing/opentracing-go v1.0.2 h1:3jA2P6O1F9UOrWVpwrIo17pu01KWvNWg
 github.com/opentracing/opentracing-go v1.0.2/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=
 github.com/pingcap/check v0.0.0-20171206051426-1c287c953996 h1:ZBdiJCMan6GSo/aPAM7gywcUKa0z58gczVrnG6TQnAQ=
 github.com/pingcap/check v0.0.0-20171206051426-1c287c953996/go.mod h1:B1+S9LNcuMyLH/4HMTViQOJevkGiik3wW2AN9zb2fNQ=
+github.com/pingcap/check v0.0.0-20190102082844-67f458068fc8/go.mod h1:B1+S9LNcuMyLH/4HMTViQOJevkGiik3wW2AN9zb2fNQ=
 github.com/pingcap/errors v0.11.1 h1:BXFZ6MdDd2U1uJUa2sRAWTmm+nieEzuyYM0R4aUTcC8=
 github.com/pingcap/errors v0.11.1/go.mod h1:Oi8TUi2kEtXXLMJk9l1cGmz20kV3TaQ0usTwv5KuLY8=
 github.com/pingcap/gofail v0.0.0-20181217135706-6a951c1e42c3 h1:04yuCf5NMvLU8rB2m4Qs3rynH7EYpMno3lHkewIOdMo=
@@ -96,6 +98,8 @@ github.com/pingcap/goleveldb v0.0.0-20171020084629-8d44bfdf1030 h1:XJLuW0lsP7vAt
 github.com/pingcap/goleveldb v0.0.0-20171020084629-8d44bfdf1030/go.mod h1:O17XtbryoCJhkKGbT62+L2OlrniwqiGLSqrmdHCMzZw=
 github.com/pingcap/kvproto v0.0.0-20190226063853-f6c0b7ffff11 h1:iGNfAHgK0VHJobW4bPTlFmdnt3YWsEHdSTIcjut6ffk=
 github.com/pingcap/kvproto v0.0.0-20190226063853-f6c0b7ffff11/go.mod h1:0gwbe1F2iBIjuQ9AH0DbQhL+Dpr5GofU8fgYyXk+ykk=
+github.com/pingcap/log v0.0.0-20190214045112-b37da76f67a7 h1:kOHAMalwF69bJrtWrOdVaCSvZjLucrJhP4NQKIu6uM4=
+github.com/pingcap/log v0.0.0-20190214045112-b37da76f67a7/go.mod h1:xsfkWVaFVV5B8e1K9seWfyJWFrIhbtUTAD8NV1Pq3+w=
 github.com/pingcap/parser v0.0.0-20190328044348-9945885931bb h1:JCc0MMW4fqfhbaI8LS1dXRmql1PbpoKLxoYq6GUlSaQ=
 github.com/pingcap/parser v0.0.0-20190328044348-9945885931bb/go.mod h1:1FNvfp9+J0wvc4kl8eGNh7Rqrxveg15jJoWo/a0uHwA=
 github.com/pingcap/pd v2.1.0-rc.4+incompatible h1:/buwGk04aHO5odk/+O8ZOXGs4qkUjYTJ2UpCJXna8NE=
@@ -104,9 +108,11 @@ github.com/pingcap/tidb-tools v2.1.3-0.20190116051332-34c808eef588+incompatible
 github.com/pingcap/tidb-tools v2.1.3-0.20190116051332-34c808eef588+incompatible/go.mod h1:XGdcy9+yqlDSEMTpOXnwf3hiTeqrV6MN/u1se9N8yIM=
 github.com/pingcap/tipb v0.0.0-20180910045846-371b48b15d93 h1:gI5bOzLMxjUq6ui+md/JnT4pYpkzrABJ/PeYORWiYYs=
 github.com/pingcap/tipb v0.0.0-20180910045846-371b48b15d93/go.mod h1:RtkHW8WbcNxj8lsbzjaILci01CtYnYbIkQhjyZWrWVI=
-github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
-github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
+github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_golang v0.8.0 h1:1921Yw9Gc3iSc4VQh3PIoOqgPCZS7G/4xQNVUp8Mda8=
 github.com/prometheus/client_golang v0.8.0/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
@@ -120,8 +126,9 @@ github.com/sirupsen/logrus v0.0.0-20170323161349-3bcb09397d6d h1:Am08dd2WIZhCQXE
 github.com/sirupsen/logrus v0.0.0-20170323161349-3bcb09397d6d/go.mod h1:pMByvHTf9Beacp5x1UXfOR9xyW/9antXMhjMPG0dEzc=
 github.com/spaolacci/murmur3 v0.0.0-20150829172844-0d12bf811670 h1:hKP4ACPoBBCnBbhoiuJXiYlSDhAvC9s4lgzAPmtVdU0=
 github.com/spaolacci/murmur3 v0.0.0-20150829172844-0d12bf811670/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
-github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
-github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/twinj/uuid v0.0.0-20150629100731-70cac2bcd273 h1:YqFyfcgqxQqjpRr0SEG0Z555J/3kPqDL/xmRyeAaX/0=
 github.com/twinj/uuid v0.0.0-20150629100731-70cac2bcd273/go.mod h1:mMgcE1RHFUFqe5AfiwlINXisXfDGro23fWdPUfOMjRY=
 github.com/uber/jaeger-client-go v2.8.0+incompatible h1:7DGH8Hqk6PirD+GE+bvCf0cLnspLuae7N1NcwMeQcyg=
@@ -134,6 +141,12 @@ github.com/unrolled/render v0.0.0-20171102162132-65450fb6b2d3 h1:ZsIlNwu/G0zbChI
 github.com/unrolled/render v0.0.0-20171102162132-65450fb6b2d3/go.mod h1:tu82oB5W2ykJRVioYsB+IQKcft7ryBr7w12qMBUPyXg=
 github.com/xiang90/probing v0.0.0-20160813154853-07dd2e8dfe18 h1:MPPkRncZLN9Kh4MEFmbnK4h3BD7AUmskWv2+EeZJCCs=
 github.com/xiang90/probing v0.0.0-20160813154853-07dd2e8dfe18/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
+go.uber.org/atomic v1.3.2 h1:2Oa65PReHzfn29GpvgsYwloV9AVFHPDk8tYxt2c2tr4=
+go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
+go.uber.org/multierr v1.1.0 h1:HoEmRHQPVSqub6w2z2d2EOVs2fjyFRGyofhKuyDq0QI=
+go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
+go.uber.org/zap v1.9.1 h1:XCJQEf3W6eZaVwhRBof6ImoYGJSITeKWsyeh3HFu/5o=
+go.uber.org/zap v1.9.1/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 golang.org/x/crypto v0.0.0-20180503215945-1f94bef427e3 h1:+U/hI4i24Enhs+2BEMCN7wg16uT6entqa2mTg/PUKB8=
 golang.org/x/crypto v0.0.0-20180503215945-1f94bef427e3/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd h1:nTDtHvHSdCn1m6ITfMRqtOd/9+7a3s8RBNOZ3eYZzJA=
@@ -158,9 +171,9 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
-gopkg.in/natefinch/lumberjack.v2 v2.0.0-20161104145732-dd45e6a67c53 h1:Kjoe/521+yYTO0xv6VymPwLPVq3RES8170ZpJkrFE9Q=
-gopkg.in/natefinch/lumberjack.v2 v2.0.0-20161104145732-dd45e6a67c53/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
+gopkg.in/natefinch/lumberjack.v2 v2.0.0 h1:1Lc07Kr7qY4U2YPouBjpCLxpiyxIVoxqXgkXLknAOE8=
+gopkg.in/natefinch/lumberjack.v2 v2.0.0/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
-gopkg.in/yaml.v2 v2.2.1 h1:mUhvW9EsL+naU5Q3cakzfE91YhliOondGd6ZrsDBHQE=
-gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/owner/fail_test.go b/owner/fail_test.go
index db1bdb6eace2b..a536e6fca7f80 100644
--- a/owner/fail_test.go
+++ b/owner/fail_test.go
@@ -33,10 +33,7 @@ import (
 func TestT(t *testing.T) {
 	CustomVerboseFlag = true
 	logLevel := os.Getenv("log_level")
-	logutil.InitLogger(&logutil.LogConfig{
-		Level:  logLevel,
-		Format: "highlight",
-	})
+	logutil.InitLogger(logutil.NewLogConfig(logLevel, "highlight", "", logutil.EmptyFileLogConfig, false))
 	TestingT(t)
 }
 
diff --git a/server/http_handler.go b/server/http_handler.go
index b19cb7d0181c1..55fd7cccbf85e 100644
--- a/server/http_handler.go
+++ b/server/http_handler.go
@@ -49,6 +49,7 @@ import (
 	"github.com/pingcap/tidb/tablecodec"
 	"github.com/pingcap/tidb/types"
 	"github.com/pingcap/tidb/util/codec"
+	logutil "github.com/pingcap/tidb/util/logutil"
 	log "github.com/sirupsen/logrus"
 	"golang.org/x/net/context"
 )
@@ -549,12 +550,19 @@ func (h settingsHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 			return
 		}
 		if levelStr := req.Form.Get("log_level"); levelStr != "" {
+			err1 := logutil.SetLevel(levelStr)
+			if err1 != nil {
+				writeError(w, err1)
+				return
+			}
+
 			l, err1 := log.ParseLevel(levelStr)
 			if err1 != nil {
 				writeError(w, err1)
 				return
 			}
 			log.SetLevel(l)
+
 			config.GetGlobalConfig().Log.Level = levelStr
 		}
 		if generalLog := req.Form.Get("tidb_general_log"); generalLog != "" {
diff --git a/server/http_handler_test.go b/server/http_handler_test.go
index 602e989665714..5074899f47492 100644
--- a/server/http_handler_test.go
+++ b/server/http_handler_test.go
@@ -30,6 +30,7 @@ import (
 
 	. "github.com/pingcap/check"
 	"github.com/pingcap/kvproto/pkg/kvrpcpb"
+	zaplog "github.com/pingcap/log"
 	"github.com/pingcap/parser/model"
 	"github.com/pingcap/parser/mysql"
 	"github.com/pingcap/tidb/config"
@@ -48,6 +49,7 @@ import (
 	"github.com/pingcap/tidb/util/codec"
 	"github.com/pingcap/tidb/util/printer"
 	log "github.com/sirupsen/logrus"
+	"go.uber.org/zap"
 )
 
 type HTTPHandlerTestSuite struct {
@@ -622,6 +624,7 @@ func (ts *HTTPHandlerTestSuite) TestPostSettings(c *C) {
 	c.Assert(err, IsNil)
 	c.Assert(resp.StatusCode, Equals, http.StatusOK)
 	c.Assert(log.GetLevel(), Equals, log.ErrorLevel)
+	c.Assert(zaplog.GetLevel(), Equals, zap.ErrorLevel)
 	c.Assert(config.GetGlobalConfig().Log.Level, Equals, "error")
 	c.Assert(atomic.LoadUint32(&variable.ProcessGeneralLog), Equals, uint32(1))
 	form = make(url.Values)
@@ -632,6 +635,7 @@ func (ts *HTTPHandlerTestSuite) TestPostSettings(c *C) {
 	c.Assert(resp.StatusCode, Equals, http.StatusOK)
 	c.Assert(atomic.LoadUint32(&variable.ProcessGeneralLog), Equals, uint32(0))
 	c.Assert(log.GetLevel(), Equals, log.InfoLevel)
+	c.Assert(zaplog.GetLevel(), Equals, zap.InfoLevel)
 	c.Assert(config.GetGlobalConfig().Log.Level, Equals, "info")
 
 	// test ddl_slow_threshold
diff --git a/server/server_test.go b/server/server_test.go
index be202a06a1006..001f19ad34daa 100644
--- a/server/server_test.go
+++ b/server/server_test.go
@@ -37,9 +37,7 @@ import (
 func TestT(t *testing.T) {
 	CustomVerboseFlag = true
 	logLevel := os.Getenv("log_level")
-	logutil.InitLogger(&logutil.LogConfig{
-		Level: logLevel,
-	})
+	logutil.InitLogger(logutil.NewLogConfig(logLevel, logutil.DefaultLogFormat, "", logutil.EmptyFileLogConfig, false))
 	TestingT(t)
 }
 
diff --git a/session/tidb_test.go b/session/tidb_test.go
index c539b77044c62..4f78c91ac9305 100644
--- a/session/tidb_test.go
+++ b/session/tidb_test.go
@@ -36,9 +36,7 @@ import (
 
 func TestT(t *testing.T) {
 	logLevel := os.Getenv("log_level")
-	logutil.InitLogger(&logutil.LogConfig{
-		Level: logLevel,
-	})
+	logutil.InitLogger(logutil.NewLogConfig(logLevel, logutil.DefaultLogFormat, "", logutil.EmptyFileLogConfig, false))
 	CustomVerboseFlag = true
 	TestingT(t)
 }
diff --git a/sessionctx/binloginfo/binloginfo_test.go b/sessionctx/binloginfo/binloginfo_test.go
index 57ba7a9c8abb4..a9e8cbe85fbcf 100644
--- a/sessionctx/binloginfo/binloginfo_test.go
+++ b/sessionctx/binloginfo/binloginfo_test.go
@@ -44,9 +44,7 @@ import (
 func TestT(t *testing.T) {
 	CustomVerboseFlag = true
 	logLevel := os.Getenv("log_level")
-	logutil.InitLogger(&logutil.LogConfig{
-		Level: logLevel,
-	})
+	logutil.InitLogger(logutil.NewLogConfig(logLevel, logutil.DefaultLogFormat, "", logutil.EmptyFileLogConfig, false))
 	TestingT(t)
 }
 
diff --git a/store/store_test.go b/store/store_test.go
index 95ef4c131b4e9..b795b75ea131e 100644
--- a/store/store_test.go
+++ b/store/store_test.go
@@ -38,9 +38,7 @@ const (
 func TestT(t *testing.T) {
 	CustomVerboseFlag = true
 	logLevel := os.Getenv("log_level")
-	logutil.InitLogger(&logutil.LogConfig{
-		Level: logLevel,
-	})
+	logutil.InitLogger(logutil.NewLogConfig(logLevel, logutil.DefaultLogFormat, "", logutil.EmptyFileLogConfig, false))
 	TestingT(t)
 }
 
diff --git a/tidb-server/main.go b/tidb-server/main.go
index 0eb0ea63100ca..724d6153c87ce 100644
--- a/tidb-server/main.go
+++ b/tidb-server/main.go
@@ -25,6 +25,7 @@ import (
 
 	"github.com/opentracing/opentracing-go"
 	"github.com/pingcap/errors"
+	"github.com/pingcap/log"
 	"github.com/pingcap/parser/mysql"
 	"github.com/pingcap/parser/terror"
 	"github.com/pingcap/pd/client"
@@ -52,7 +53,7 @@ import (
 	"github.com/pingcap/tidb/x-server"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/push"
-	log "github.com/sirupsen/logrus"
+	"go.uber.org/zap"
 )
 
 // Flag Names
@@ -148,6 +149,14 @@ func main() {
 	signal.SetupSignalHandler(serverShutdown)
 	runServer()
 	cleanup()
+	exit()
+}
+
+func exit() {
+	if err := log.Sync(); err != nil {
+		fmt.Fprintln(os.Stderr, "sync log err:", err)
+		os.Exit(1)
+	}
 	os.Exit(0)
 }
 
@@ -205,7 +214,7 @@ func setupBinlogClient() {
 	terror.MustNil(err)
 
 	binloginfo.SetPumpsClient(client)
-	log.Infof("create pumps client success, ignore binlog error %v", cfg.Binlog.IgnoreError)
+	log.Info("tidb-server", zap.Bool("create pumps client success, ignore binlog error", cfg.Binlog.IgnoreError))
 }
 
 // Prometheus push.
@@ -217,7 +226,7 @@ func pushMetric(addr string, interval time.Duration) {
 		log.Info("disable Prometheus push client")
 		return
 	}
-	log.Infof("start Prometheus push client with server addr %s and interval %s", addr, interval)
+	log.Info("start prometheus push client", zap.String("server addr", addr), zap.String("interval", interval.String()))
 	go prometheusPushClient(addr, interval)
 }
 
@@ -233,7 +242,7 @@ func prometheusPushClient(addr string, interval time.Duration) {
 			prometheus.DefaultGatherer,
 		)
 		if err != nil {
-			log.Errorf("could not push metrics to Prometheus Pushgateway: %v", err)
+			log.Error("could not push metrics to prometheus pushgateway", zap.String("err", err.Error()))
 		}
 		time.Sleep(interval)
 	}
@@ -254,7 +263,7 @@ func parseDuration(lease string) time.Duration {
 		dur, err = time.ParseDuration(lease + "s")
 	}
 	if err != nil || dur < 0 {
-		log.Fatalf("invalid lease duration %s", lease)
+		log.Fatal("invalid lease duration", zap.String("lease", lease))
 	}
 	return dur
 }
@@ -377,15 +386,15 @@ func validateConfig() {
 				nameList = append(nameList, k)
 			}
 		}
-		log.Errorf("\"store\" should be in [%s] only", strings.Join(nameList, ", "))
+		log.Error("validate config", zap.Strings("valid storages", nameList))
 		os.Exit(-1)
 	}
 	if cfg.Store == "mocktikv" && cfg.RunDDL == false {
-		log.Errorf("can't disable DDL on mocktikv")
+		log.Error("can't disable DDL on mocktikv")
 		os.Exit(-1)
 	}
 	if cfg.Log.File.MaxSize > config.MaxLogFileSize {
-		log.Errorf("log max-size should not be larger than %d MB", config.MaxLogFileSize)
+		log.Error("validate config", zap.Int("log max-size should not be larger than", config.MaxLogFileSize))
 		os.Exit(-1)
 	}
 	if cfg.XProtocol.XServer {
@@ -396,7 +405,7 @@ func validateConfig() {
 
 	// lower_case_table_names is allowed to be 0, 1, 2
 	if cfg.LowerCaseTableNames < 0 || cfg.LowerCaseTableNames > 2 {
-		log.Errorf("lower-case-table-names should be 0 or 1 or 2.")
+		log.Error("lower-case-table-names should be 0 or 1 or 2.")
 		os.Exit(-1)
 	}
 }
@@ -442,14 +451,17 @@ func setGlobalVars() {
 }
 
 func setupLog() {
-	err := logutil.InitLogger(cfg.Log.ToLogConfig())
+	err := logutil.InitZapLogger(cfg.Log.ToLogConfig())
+	terror.MustNil(err)
+
+	err = logutil.InitLogger(cfg.Log.ToLogConfig())
 	terror.MustNil(err)
 }
 
 func printInfo() {
 	// Make sure the TiDB info is always printed.
 	level := log.GetLevel()
-	log.SetLevel(log.InfoLevel)
+	log.SetLevel(zap.InfoLevel)
 	printer.PrintTiDBInfo()
 	log.SetLevel(level)
 }
@@ -506,7 +518,7 @@ func setupTracing() {
 	tracingCfg := cfg.OpenTracing.ToTracingConfig()
 	tracer, _, err := tracingCfg.New("TiDB")
 	if err != nil {
-		log.Fatal("cannot initialize Jaeger Tracer", err)
+		log.Fatal("setup jaeger tracer failed", zap.String("error message", err.Error()))
 	}
 	opentracing.SetGlobalTracer(tracer)
 }
diff --git a/util/logutil/log.go b/util/logutil/log.go
index 24b306e25887f..553f0c36bff9d 100644
--- a/util/logutil/log.go
+++ b/util/logutil/log.go
@@ -23,7 +23,9 @@ import (
 	"strings"
 
 	"github.com/pingcap/errors"
+	zaplog "github.com/pingcap/log"
 	log "github.com/sirupsen/logrus"
+	"go.uber.org/zap"
 	"gopkg.in/natefinch/lumberjack.v2"
 )
 
@@ -31,42 +33,53 @@ const (
 	defaultLogTimeFormat = "2006/01/02 15:04:05.000"
 	// DefaultLogMaxSize is the default size of log files.
 	DefaultLogMaxSize = 300 // MB
-	defaultLogFormat  = "text"
-	defaultLogLevel   = log.InfoLevel
+	// DefaultLogFormat is the default format of the log.
+	DefaultLogFormat = "text"
+	defaultLogLevel  = log.InfoLevel
 	// DefaultSlowThreshold is the default slow log threshold in millisecond.
 	DefaultSlowThreshold = 300
 	// DefaultQueryLogMaxLen is the default max length of the query in the log.
 	DefaultQueryLogMaxLen = 2048
 )
 
+// EmptyFileLogConfig is an empty FileLogConfig.
+var EmptyFileLogConfig = FileLogConfig{}
+
 // FileLogConfig serializes file log related config in toml/json.
 type FileLogConfig struct {
-	// Log filename, leave empty to disable file log.
-	Filename string `toml:"filename" json:"filename"`
-	// Is log rotate enabled. TODO.
-	LogRotate bool `toml:"log-rotate" json:"log-rotate"`
-	// Max size for a single file, in MB.
-	MaxSize uint `toml:"max-size" json:"max-size"`
-	// Max log keep days, default is never deleting.
-	MaxDays uint `toml:"max-days" json:"max-days"`
-	// Maximum number of old log files to retain.
-	MaxBackups uint `toml:"max-backups" json:"max-backups"`
+	zaplog.FileLogConfig
+}
+
+// NewFileLogConfig creates a FileLogConfig.
+func NewFileLogConfig(rotate bool, maxSize uint) FileLogConfig {
+	return FileLogConfig{FileLogConfig: zaplog.FileLogConfig{
+		LogRotate: rotate,
+		MaxSize:   int(maxSize),
+	},
+	}
 }
 
 // LogConfig serializes log related config in toml/json.
 type LogConfig struct {
-	// Log level.
-	Level string `toml:"level" json:"level"`
-	// Log format. one of json, text, or console.
-	Format string `toml:"format" json:"format"`
-	// Disable automatic timestamps in output.
-	DisableTimestamp bool `toml:"disable-timestamp" json:"disable-timestamp"`
-	// File log config.
-	File FileLogConfig `toml:"file" json:"file"`
+	zaplog.Config
+
 	// SlowQueryFile filename, default to File log config on empty.
 	SlowQueryFile string
 }
 
+// NewLogConfig creates a LogConfig.
+func NewLogConfig(level, format, slowQueryFile string, fileCfg FileLogConfig, disableTimestamp bool) *LogConfig {
+	return &LogConfig{
+		Config: zaplog.Config{
+			Level:            level,
+			Format:           format,
+			DisableTimestamp: disableTimestamp,
+			File:             fileCfg.FileLogConfig,
+		},
+		SlowQueryFile: slowQueryFile,
+	}
+}
+
 // isSKippedPackageName tests wether path name is on log library calling stack.
 func isSkippedPackageName(name string) bool {
 	return strings.Contains(name, "github.com/sirupsen/logrus") ||
@@ -220,7 +233,7 @@ func stringToLogFormatter(format string, disableTimestamp bool) log.Formatter {
 }
 
 // initFileLog initializes file based logging options.
-func initFileLog(cfg *FileLogConfig, logger *log.Logger) error {
+func initFileLog(cfg *zaplog.FileLogConfig, logger *log.Logger) error {
 	if st, err := os.Stat(cfg.Filename); err == nil {
 		if st.IsDir() {
 			return errors.New("can't use directory as log file name")
@@ -250,13 +263,16 @@ func initFileLog(cfg *FileLogConfig, logger *log.Logger) error {
 // SlowQueryLogger is used to log slow query, InitLogger will modify it according to config file.
 var SlowQueryLogger = log.StandardLogger()
 
+// SlowQueryZapLogger is used to log slow query, InitZapLogger will set it according to config file.
+var SlowQueryZapLogger *zap.Logger
+
 // InitLogger initializes PD's logger.
 func InitLogger(cfg *LogConfig) error {
 	log.SetLevel(stringToLogLevel(cfg.Level))
 	log.AddHook(&contextHook{})
 
 	if cfg.Format == "" {
-		cfg.Format = defaultLogFormat
+		cfg.Format = DefaultLogFormat
 	}
 	formatter := stringToLogFormatter(cfg.Format, cfg.DisableTimestamp)
 	log.SetFormatter(formatter)
@@ -287,3 +303,45 @@ func InitLogger(cfg *LogConfig) error {
 
 	return nil
 }
+
+// InitZapLogger initializes a zap logger with cfg.
+func InitZapLogger(cfg *LogConfig) error {
+	gl, props, err := zaplog.InitLogger(&cfg.Config)
+	if err != nil {
+		return errors.Trace(err)
+	}
+	zaplog.ReplaceGlobals(gl, props)
+
+	if len(cfg.SlowQueryFile) != 0 {
+		sqfCfg := zaplog.FileLogConfig{
+			LogRotate: cfg.File.LogRotate,
+			MaxSize:   cfg.File.MaxSize,
+			Filename:  cfg.SlowQueryFile,
+		}
+		sqCfg := &zaplog.Config{
+			Level:            cfg.Level,
+			Format:           cfg.Format,
+			DisableTimestamp: cfg.DisableTimestamp,
+			File:             sqfCfg,
+		}
+		sqLogger, _, err := zaplog.InitLogger(sqCfg)
+		if err != nil {
+			return errors.Trace(err)
+		}
+		SlowQueryZapLogger = sqLogger
+	} else {
+		SlowQueryZapLogger = gl
+	}
+
+	return nil
+}
+
+// SetLevel sets the zap logger's level.
+func SetLevel(level string) error {
+	l := zap.NewAtomicLevel()
+	if err := l.UnmarshalText([]byte(level)); err != nil {
+		return errors.Trace(err)
+	}
+	zaplog.SetLevel(l.Level())
+	return nil
+}
diff --git a/util/logutil/log_test.go b/util/logutil/log_test.go
index 5327bc5b8643b..a02d675a7d6a5 100644
--- a/util/logutil/log_test.go
+++ b/util/logutil/log_test.go
@@ -24,11 +24,16 @@ import (
 	"testing"
 
 	. "github.com/pingcap/check"
+	zaplog "github.com/pingcap/log"
 	log "github.com/sirupsen/logrus"
+	"go.uber.org/zap"
 )
 
 const (
 	logPattern = `\d\d\d\d/\d\d/\d\d \d\d:\d\d:\d\d\.\d\d\d ([\w_%!$@.,+~-]+|\\.)+:\d+: \[(fatal|error|warning|info|debug)\] .*?\n`
+	// zapLogPatern is used to match the zap log format, such as the following log:
+	// [2019/02/13 15:56:05.385 +08:00] [INFO] [log_test.go:167] ["info message"] ["str key"=val] ["int key"=123]
+	zapLogPattern = `\[\d\d\d\d/\d\d/\d\d \d\d:\d\d:\d\d.\d\d\d\ \+\d\d:\d\d\] \[(FATAL|ERROR|WARN|INFO|DEBUG)\] \[([\w_%!$@.,+~-]+|\\.)+:\d+\] \[.*\] (\[.*=.*\]).*\n`
 )
 
 func Test(t *testing.T) {
@@ -61,7 +66,7 @@ func (s *testLogSuite) TestStringToLogLevel(c *C) {
 
 // TestLogging assure log format and log redirection works.
 func (s *testLogSuite) TestLogging(c *C) {
-	conf := &LogConfig{Level: "warn", File: FileLogConfig{}}
+	conf := NewLogConfig("warn", DefaultLogFormat, "", EmptyFileLogConfig, false)
 	c.Assert(InitLogger(conf), IsNil)
 
 	log.SetOutput(s.buf)
@@ -84,7 +89,7 @@ func (s *testLogSuite) TestLogging(c *C) {
 
 func (s *testLogSuite) TestSlowQueryLogger(c *C) {
 	fileName := "slow_query"
-	conf := &LogConfig{Level: "info", File: FileLogConfig{}, SlowQueryFile: fileName}
+	conf := NewLogConfig("info", DefaultLogFormat, fileName, EmptyFileLogConfig, false)
 	err := InitLogger(conf)
 	c.Assert(err, IsNil)
 	defer os.Remove(fileName)
@@ -113,7 +118,7 @@ func (s *testLogSuite) TestSlowQueryLogger(c *C) {
 
 func (s *testLogSuite) TestSlowQueryLoggerKeepOrder(c *C) {
 	fileName := "slow_query"
-	conf := &LogConfig{Level: "warn", File: FileLogConfig{}, Format: "text", DisableTimestamp: true, SlowQueryFile: fileName}
+	conf := NewLogConfig("warn", DefaultLogFormat, fileName, EmptyFileLogConfig, true)
 	c.Assert(InitLogger(conf), IsNil)
 	defer os.Remove(fileName)
 	ft, ok := SlowQueryLogger.Formatter.(*textFormatter)
@@ -149,3 +154,48 @@ func (s *testLogSuite) TestSlowQueryLoggerKeepOrder(c *C) {
 	expectMsg = fmt.Sprintf("log_test.go:%v: [warning] slow-query a=a b=b c=c d=d e=e f=f\n", line+1)
 	c.Assert(s.buf.String(), Equals, expectMsg)
 }
+
+func (s *testLogSuite) TestSlowQueryZapLogger(c *C) {
+	fileName := "slow_query"
+	conf := NewLogConfig("info", DefaultLogFormat, fileName, EmptyFileLogConfig, false)
+	err := InitZapLogger(conf)
+	c.Assert(err, IsNil)
+	defer os.Remove(fileName)
+
+	SlowQueryZapLogger.Debug("debug message", zap.String("str key", "val"))
+	SlowQueryZapLogger.Info("info message", zap.String("str key", "val"))
+	SlowQueryZapLogger.Warn("warn", zap.Int("int key", 123))
+	SlowQueryZapLogger.Error("error message", zap.Bool("bool key", true))
+
+	f, err := os.Open(fileName)
+	c.Assert(err, IsNil)
+	defer f.Close()
+
+	r := bufio.NewReader(f)
+	for {
+		var str string
+		str, err = r.ReadString('\n')
+		if err != nil {
+			break
+		}
+		c.Assert(str, Matches, zapLogPattern)
+	}
+	c.Assert(err, Equals, io.EOF)
+}
+
+func (s *testLogSuite) TestSetLevel(c *C) {
+	conf := NewLogConfig("info", DefaultLogFormat, "", EmptyFileLogConfig, false)
+	err := InitZapLogger(conf)
+	c.Assert(err, IsNil)
+
+	c.Assert(zaplog.GetLevel(), Equals, zap.InfoLevel)
+	err = SetLevel("warn")
+	c.Assert(err, IsNil)
+	c.Assert(zaplog.GetLevel(), Equals, zap.WarnLevel)
+	err = SetLevel("Error")
+	c.Assert(err, IsNil)
+	c.Assert(zaplog.GetLevel(), Equals, zap.ErrorLevel)
+	err = SetLevel("DEBUG")
+	c.Assert(err, IsNil)
+	c.Assert(zaplog.GetLevel(), Equals, zap.DebugLevel)
+}
diff --git a/util/memory/tracker_test.go b/util/memory/tracker_test.go
index 65788551890be..2982fff0374d5 100644
--- a/util/memory/tracker_test.go
+++ b/util/memory/tracker_test.go
@@ -26,9 +26,7 @@ import (
 func TestT(t *testing.T) {
 	CustomVerboseFlag = true
 	logLevel := os.Getenv("log_level")
-	logutil.InitLogger(&logutil.LogConfig{
-		Level: logLevel,
-	})
+	logutil.InitLogger(logutil.NewLogConfig(logLevel, logutil.DefaultLogFormat, "", logutil.EmptyFileLogConfig, false))
 	TestingT(t)
 }