config: Remove level in console/file loggers (#3938)

Also rename fileName field in file logger to filename

cmd/config-migrate.go

@@ -82,6 +82,10 @@ func migrateConfig() error {
 	if err := migrateV14ToV15(); err != nil {
 		return err
 	}
+	// Migration version '15' to '16'.
+	if err := migrateV15ToV16(); err != nil {
+		return err
+	}
 
 	return nil
 }
@@ -136,11 +140,11 @@ func migrateV2ToV3() error {
 		// Region needs to be set for AWS Signature V4.
 		srvConfig.Region = globalMinioDefaultRegion
 	}
-	srvConfig.Logger.Console = consoleLogger{
+	srvConfig.Logger.Console = consoleLoggerV1{
 		Enable: true,
 		Level:  "fatal",
 	}
-	flogger := fileLogger{}
+	flogger := fileLoggerV1{}
 	flogger.Level = "error"
 	if cv2.FileLogger.Filename != "" {
 		flogger.Enable = true
@@ -745,7 +749,7 @@ func migrateV12ToV13() error {
 
 	// Copy over fields from V12 into V13 config struct
 	srvConfig := &serverConfigV13{
-		Logger: &logger{},
+		Logger: &loggerV7{},
 		Notify: &notifier{},
 	}
 	srvConfig.Version = "13"
@@ -825,7 +829,7 @@ func migrateV13ToV14() error {
 
 	// Copy over fields from V13 into V14 config struct
 	srvConfig := &serverConfigV14{
-		Logger: &logger{},
+		Logger: &loggerV7{},
 		Notify: &notifier{},
 	}
 	srvConfig.Version = "14"
@@ -910,7 +914,7 @@ func migrateV14ToV15() error {
 
 	// Copy over fields from V14 into V15 config struct
 	srvConfig := &serverConfigV15{
-		Logger: &logger{},
+		Logger: &loggerV7{},
 		Notify: &notifier{},
 	}
 	srvConfig.Version = "15"
@@ -981,3 +985,98 @@ func migrateV14ToV15() error {
 	console.Printf("Migration from version ‘%s’ to ‘%s’ completed successfully.\n", cv14.Version, srvConfig.Version)
 	return nil
 }
+
+// Version '15' to '16' migration. Remove log level in loggers
+// and rename 'fileName' filed in File logger to 'filename'
+func migrateV15ToV16() error {
+	configFile := getConfigFile()
+
+	cv15 := &serverConfigV15{}
+	_, err := quick.Load(configFile, cv15)
+	if os.IsNotExist(err) {
+		return nil
+	} else if err != nil {
+		return fmt.Errorf("Unable to load config version ‘15’. %v", err)
+	}
+	if cv15.Version != "15" {
+		return nil
+	}
+
+	// Copy over fields from V15 into V16 config struct
+	srvConfig := &serverConfigV16{
+		Logger: &logger{},
+		Notify: &notifier{},
+	}
+	srvConfig.Version = "16"
+	srvConfig.Credential = cv15.Credential
+	srvConfig.Region = cv15.Region
+	if srvConfig.Region == "" {
+		// Region needs to be set for AWS Signature Version 4.
+		srvConfig.Region = globalMinioDefaultRegion
+	}
+
+	// check and set notifiers config
+	if len(cv15.Notify.AMQP) == 0 {
+		srvConfig.Notify.AMQP = make(map[string]amqpNotify)
+		srvConfig.Notify.AMQP["1"] = amqpNotify{}
+	} else {
+		srvConfig.Notify.AMQP = cv15.Notify.AMQP
+	}
+	if len(cv15.Notify.ElasticSearch) == 0 {
+		srvConfig.Notify.ElasticSearch = make(map[string]elasticSearchNotify)
+		srvConfig.Notify.ElasticSearch["1"] = elasticSearchNotify{}
+	} else {
+		srvConfig.Notify.ElasticSearch = cv15.Notify.ElasticSearch
+	}
+	if len(cv15.Notify.Redis) == 0 {
+		srvConfig.Notify.Redis = make(map[string]redisNotify)
+		srvConfig.Notify.Redis["1"] = redisNotify{}
+	} else {
+		srvConfig.Notify.Redis = cv15.Notify.Redis
+	}
+	if len(cv15.Notify.PostgreSQL) == 0 {
+		srvConfig.Notify.PostgreSQL = make(map[string]postgreSQLNotify)
+		srvConfig.Notify.PostgreSQL["1"] = postgreSQLNotify{}
+	} else {
+		srvConfig.Notify.PostgreSQL = cv15.Notify.PostgreSQL
+	}
+	if len(cv15.Notify.Kafka) == 0 {
+		srvConfig.Notify.Kafka = make(map[string]kafkaNotify)
+		srvConfig.Notify.Kafka["1"] = kafkaNotify{}
+	} else {
+		srvConfig.Notify.Kafka = cv15.Notify.Kafka
+	}
+	if len(cv15.Notify.NATS) == 0 {
+		srvConfig.Notify.NATS = make(map[string]natsNotify)
+		srvConfig.Notify.NATS["1"] = natsNotify{}
+	} else {
+		srvConfig.Notify.NATS = cv15.Notify.NATS
+	}
+	if len(cv15.Notify.Webhook) == 0 {
+		srvConfig.Notify.Webhook = make(map[string]webhookNotify)
+		srvConfig.Notify.Webhook["1"] = webhookNotify{}
+	} else {
+		srvConfig.Notify.Webhook = cv15.Notify.Webhook
+	}
+	if len(cv15.Notify.MySQL) == 0 {
+		srvConfig.Notify.MySQL = make(map[string]mySQLNotify)
+		srvConfig.Notify.MySQL["1"] = mySQLNotify{}
+	} else {
+		srvConfig.Notify.MySQL = cv15.Notify.MySQL
+	}
+
+	// Load browser config from existing config in the file.
+	srvConfig.Browser = cv15.Browser
+
+	// Migrate console and file fields
+	srvConfig.Logger.Console = consoleLogger{Enable: cv15.Logger.Console.Enable}
+	srvConfig.Logger.File = fileLogger{Enable: cv15.Logger.File.Enable, Filename: cv15.Logger.File.Filename}
+
+	if err = quick.Save(configFile, srvConfig); err != nil {
+		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv15.Version, srvConfig.Version, err)
+	}
+
+	console.Printf("Migration from version ‘%s’ to ‘%s’ completed successfully.\n", cv15.Version, srvConfig.Version)
+
+	return nil
+}

cmd/config-migrate_test.go

@@ -112,10 +112,13 @@ func TestServerConfigMigrateInexistentConfig(t *testing.T) {
 	if err := migrateV14ToV15(); err != nil {
 		t.Fatal("migrate v14 to v15 should succeed when no config file is found")
 	}
+	if err := migrateV15ToV16(); err != nil {
+		t.Fatal("migrate v15 to v16 should succeed when no config file is found")
+	}
 }
 
-// Test if a config migration from v2 to v15 is successfully done
+// Test if a config migration from v2 to v16 is successfully done
-func TestServerConfigMigrateV2toV15(t *testing.T) {
+func TestServerConfigMigrateV2toV16(t *testing.T) {
 	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
@@ -154,7 +157,7 @@ func TestServerConfigMigrateV2toV15(t *testing.T) {
 	}
 
 	// Check the version number in the upgraded config file
-	expectedVersion := v15
+	expectedVersion := v16
 	if serverConfig.Version != expectedVersion {
 		t.Fatalf("Expect version "+expectedVersion+", found: %v", serverConfig.Version)
 	}
@@ -225,4 +228,7 @@ func TestServerConfigMigrateFaultyConfig(t *testing.T) {
 	if err := migrateV14ToV15(); err == nil {
 		t.Fatal("migrateConfigV14ToV15() should fail with a corrupted json")
 	}
+	if err := migrateV15ToV16(); err == nil {
+		t.Fatal("migrateConfigV15ToV16() should fail with a corrupted json")
+	}
 }

cmd/config-old.go

@@ -186,9 +186,21 @@ type configV5 struct {
 	Logger loggerV5 `json:"logger"`
 }
 
+// consoleLogger - default logger if not other logging is enabled.
+type consoleLoggerV1 struct {
+	Enable bool   `json:"enable"`
+	Level  string `json:"level"`
+}
+
+type fileLoggerV1 struct {
+	Enable   bool   `json:"enable"`
+	Filename string `json:"fileName"`
+	Level    string `json:"level"`
+}
+
 type loggerV6 struct {
-	Console consoleLogger  `json:"console"`
+	Console consoleLoggerV1 `json:"console"`
-	File    fileLogger     `json:"file"`
+	File    fileLoggerV1    `json:"file"`
 	Syslog  syslogLoggerV3  `json:"syslog"`
 }
 
@@ -285,6 +297,12 @@ type serverConfigV9 struct {
 	rwMutex *sync.RWMutex
 }
 
+type loggerV7 struct {
+	sync.RWMutex
+	Console consoleLoggerV1 `json:"console"`
+	File    fileLoggerV1    `json:"file"`
+}
+
 // serverConfigV10 server configuration version '10' which is like
 // version '9' except it drops support of syslog config, and makes the
 // RWMutex global (so it does not exist in this struct).
@@ -296,7 +314,7 @@ type serverConfigV10 struct {
 	Region     string     `json:"region"`
 
 	// Additional error logging configuration.
-	Logger logger `json:"logger"`
+	Logger loggerV7 `json:"logger"`
 
 	// Notification queue configuration.
 	Notify notifierV1 `json:"notify"`
@@ -324,7 +342,7 @@ type serverConfigV11 struct {
 	Region     string     `json:"region"`
 
 	// Additional error logging configuration.
-	Logger logger `json:"logger"`
+	Logger loggerV7 `json:"logger"`
 
 	// Notification queue configuration.
 	Notify notifierV1 `json:"notify"`
@@ -340,7 +358,7 @@ type serverConfigV12 struct {
 	Region     string     `json:"region"`
 
 	// Additional error logging configuration.
-	Logger logger `json:"logger"`
+	Logger loggerV7 `json:"logger"`
 
 	// Notification queue configuration.
 	Notify notifierV2 `json:"notify"`
@@ -356,7 +374,7 @@ type serverConfigV13 struct {
 	Region     string     `json:"region"`
 
 	// Additional error logging configuration.
-	Logger *logger `json:"logger"`
+	Logger *loggerV7 `json:"logger"`
 
 	// Notification queue configuration.
 	Notify *notifier `json:"notify"`
@@ -373,7 +391,24 @@ type serverConfigV14 struct {
 	Browser    string     `json:"browser"`
 
 	// Additional error logging configuration.
-	Logger *logger `json:"logger"`
+	Logger *loggerV7 `json:"logger"`
+
+	// Notification queue configuration.
+	Notify *notifier `json:"notify"`
+}
+
+// serverConfigV15 server configuration version '15' which is like
+// version '14' except it adds mysql support
+type serverConfigV15 struct {
+	Version string `json:"version"`
+
+	// S3 API configuration.
+	Credential credential `json:"credential"`
+	Region     string     `json:"region"`
+	Browser    string     `json:"browser"`
+
+	// Additional error logging configuration.
+	Logger *loggerV7 `json:"logger"`
 
 	// Notification queue configuration.
 	Notify *notifier `json:"notify"`

cmd/config-v16.go

@@ -30,12 +30,12 @@ import (
 // Read Write mutex for safe access to ServerConfig.
 var serverConfigMu sync.RWMutex
 
-// Config version
+var v16 = "16"
-const v15 = "15"
 
-// serverConfigV15 server configuration version '15' which is like
+// serverConfigV16 server configuration version '16' which is like
-// version '14' except it adds support of MySQL notifications.
+// version '15' except it removes log level field and renames `fileName`
-type serverConfigV15 struct {
+// field of File logger to `filename`
+type serverConfigV16 struct {
 	Version string `json:"version"`
 
 	// S3 API configuration.
@@ -50,9 +50,9 @@ type serverConfigV15 struct {
 	Notify *notifier `json:"notify"`
 }
 
-func newServerConfigV15() *serverConfigV15 {
+func newServerConfigV16() *serverConfigV16 {
-	srvCfg := &serverConfigV15{
+	srvCfg := &serverConfigV16{
-		Version: v15,
+		Version: v16,
 		Region:  globalMinioDefaultRegion,
 		Logger:  &logger{},
 		Notify:  &notifier{},
@@ -62,7 +62,6 @@ func newServerConfigV15() *serverConfigV15 {
 	// Enable console logger by default on a fresh run.
 	srvCfg.Logger.Console = consoleLogger{
 		Enable: true,
-		Level:  "error",
 	}
 
 	// Make sure to initialize notification configs.
@@ -90,7 +89,7 @@ func newServerConfigV15() *serverConfigV15 {
 // found, otherwise use default parameters
 func newConfig(envParams envParams) error {
 	// Initialize server config.
-	srvCfg := newServerConfigV15()
+	srvCfg := newServerConfigV16()
 
 	// If env is set for a fresh start, save them to config file.
 	if globalIsEnvCreds {
@@ -122,12 +121,12 @@ func newConfig(envParams envParams) error {
 func loadConfig(envParams envParams) error {
 	configFile := getConfigFile()
 
-	srvCfg := &serverConfigV15{}
+	srvCfg := &serverConfigV16{}
 	if _, err := quick.Load(configFile, srvCfg); err != nil {
 		return err
 	}
-	if srvCfg.Version != v15 {
+	if srvCfg.Version != v16 {
-		return fmt.Errorf("configuration version mismatch.  Expected: ‘%s’, Got: ‘%s’", srvCfg.Version, v15)
+		return fmt.Errorf("configuration version mismatch.  Expected: ‘%s’, Got: ‘%s’", srvCfg.Version, v16)
 	}
 
 	// If env is set override the credentials from config file.
@@ -206,14 +205,14 @@ func checkDupJSONKeys(json string) error {
 func validateConfig() error {
 	configFile := getConfigFile()
 
-	srvCfg := &serverConfigV15{}
+	srvCfg := &serverConfigV16{}
 	if _, err := quick.Load(configFile, srvCfg); err != nil {
 		return err
 	}
 
 	// Check if config version is valid
-	if srvCfg.Version != v15 {
+	if srvCfg.Version != v16 {
-		return errors.New("bad config version, expected: " + v15)
+		return errors.New("bad config version, expected: " + v16)
 	}
 
 	// Load config file json and check for duplication json keys
@@ -257,10 +256,10 @@ func validateConfig() error {
 }
 
 // serverConfig server config.
-var serverConfig *serverConfigV15
+var serverConfig *serverConfigV16
 
 // GetVersion get current config version.
-func (s serverConfigV15) GetVersion() string {
+func (s serverConfigV16) GetVersion() string {
 	serverConfigMu.RLock()
 	defer serverConfigMu.RUnlock()
 
@@ -268,7 +267,7 @@ func (s serverConfigV15) GetVersion() string {
 }
 
 // SetRegion set new region.
-func (s *serverConfigV15) SetRegion(region string) {
+func (s *serverConfigV16) SetRegion(region string) {
 	serverConfigMu.Lock()
 	defer serverConfigMu.Unlock()
 
@@ -280,7 +279,7 @@ func (s *serverConfigV15) SetRegion(region string) {
 }
 
 // GetRegion get current region.
-func (s serverConfigV15) GetRegion() string {
+func (s serverConfigV16) GetRegion() string {
 	serverConfigMu.RLock()
 	defer serverConfigMu.RUnlock()
 
@@ -293,7 +292,7 @@ func (s serverConfigV15) GetRegion() string {
 }
 
 // SetCredentials set new credentials.
-func (s *serverConfigV15) SetCredential(creds credential) {
+func (s *serverConfigV16) SetCredential(creds credential) {
 	serverConfigMu.Lock()
 	defer serverConfigMu.Unlock()
 
@@ -302,7 +301,7 @@ func (s *serverConfigV15) SetCredential(creds credential) {
 }
 
 // GetCredentials get current credentials.
-func (s serverConfigV15) GetCredential() credential {
+func (s serverConfigV16) GetCredential() credential {
 	serverConfigMu.RLock()
 	defer serverConfigMu.RUnlock()
 
@@ -310,7 +309,7 @@ func (s serverConfigV15) GetCredential() credential {
 }
 
 // SetBrowser set if browser is enabled.
-func (s *serverConfigV15) SetBrowser(v string) {
+func (s *serverConfigV16) SetBrowser(v string) {
 	serverConfigMu.Lock()
 	defer serverConfigMu.Unlock()
 
@@ -324,7 +323,7 @@ func (s *serverConfigV15) SetBrowser(v string) {
 }
 
 // GetCredentials get current credentials.
-func (s serverConfigV15) GetBrowser() string {
+func (s serverConfigV16) GetBrowser() string {
 	serverConfigMu.RLock()
 	defer serverConfigMu.RUnlock()
 
@@ -337,7 +336,7 @@ func (s serverConfigV15) GetBrowser() string {
 }
 
 // Save config.
-func (s serverConfigV15) Save() error {
+func (s serverConfigV16) Save() error {
 	serverConfigMu.RLock()
 	defer serverConfigMu.RUnlock()
 

cmd/config-v16_test.go

@@ -113,8 +113,8 @@ func TestServerConfig(t *testing.T) {
 	})
 
 	// Match version.
-	if serverConfig.GetVersion() != v15 {
+	if serverConfig.GetVersion() != v16 {
-		t.Errorf("Expecting version %s found %s", serverConfig.GetVersion(), v15)
+		t.Errorf("Expecting version %s found %s", serverConfig.GetVersion(), v16)
 	}
 
 	// Attempt to save.
@@ -219,7 +219,7 @@ func TestValidateConfig(t *testing.T) {
 
 	configPath := filepath.Join(rootPath, minioConfigFile)
 
-	v := v15
+	v := v16
 
 	testCases := []struct {
 		configData string
@@ -255,31 +255,28 @@ func TestValidateConfig(t *testing.T) {
 		// Test 10 - duplicated json keys
 		{`{"version": "` + v + `", "browser": "on", "browser": "on", "region":"us-east-1", "credential" : {"accessKey":"minio", "secretKey":"minio123"}}`, false},
 
-		// Test 11 - Wrong Console logger level
+		// Test 11 - empty filename field in File
-		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "logger": { "console": { "enable": true, "level": "foo" } }}`, false},
+		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "logger": { "file": { "enable": true, "filename": "" } }}`, false},
 
-		// Test 12 - Wrong File logger level
+		// Test 12 - Test AMQP
-		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "logger": { "file": { "enable": true, "level": "foo" } }}`, false},
-
-		// Test 13 - Test AMQP
 		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "amqp": { "1": { "enable": true, "url": "", "exchange": "", "routingKey": "", "exchangeType": "", "mandatory": false, "immediate": false, "durable": false, "internal": false, "noWait": false, "autoDeleted": false }}}}`, false},
 
-		// Test 14 - Test NATS
+		// Test 13 - Test NATS
 		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "nats": { "1": { "enable": true, "address": "", "subject": "", "username": "", "password": "", "token": "", "secure": false, "pingInterval": 0, "streaming": { "enable": false, "clusterID": "", "clientID": "", "async": false, "maxPubAcksInflight": 0 } } }}}`, false},
 
-		// Test 15 - Test ElasticSearch
+		// Test 14 - Test ElasticSearch
 		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "elasticsearch": { "1": { "enable": true, "url": "", "index": "" } }}}`, false},
 
-		// Test 16 - Test Redis
+		// Test 15 - Test Redis
 		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "redis": { "1": { "enable": true, "address": "", "password": "", "key": "" } }}}`, false},
 
-		// Test 17 - Test PostgreSQL
+		// Test 16 - Test PostgreSQL
 		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "postgresql": { "1": { "enable": true, "connectionString": "", "table": "", "host": "", "port": "", "user": "", "password": "", "database": "" }}}}`, false},
 
-		// Test 18 - Test Kafka
+		// Test 17 - Test Kafka
 		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "kafka": { "1": { "enable": true, "brokers": null, "topic": "" } }}}`, false},
 
-		// Test 19 - Test Webhook
+		// Test 18 - Test Webhook
 		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "webhook": { "1": { "enable": true, "endpoint": "" } }}}`, false},
 
 		// Test 19 - Test MySQL

cmd/gateway-main.go

@@ -96,7 +96,7 @@ func newGatewayLayer(backendType, accessKey, secretKey string) (GatewayLayer, er
 // only used in memory.
 func newGatewayConfig(accessKey, secretKey, region string) error {
 	// Initialize server config.
-	srvCfg := newServerConfigV15()
+	srvCfg := newServerConfigV16()
 
 	// If env is set for a fresh start, save them to config file.
 	srvCfg.SetCredential(credential{
@@ -105,7 +105,7 @@ func newGatewayConfig(accessKey, secretKey, region string) error {
 	})
 
 	// Set default printing to console.
-	srvCfg.Logger.SetConsole(consoleLogger{true, "error"})
+	srvCfg.Logger.SetConsole(consoleLogger{true})
 
 	// Set custom region.
 	srvCfg.SetRegion(region)

cmd/logger-console-hook.go

@@ -16,24 +16,14 @@
 
 package cmd
 
-import (
+import "github.com/Sirupsen/logrus"
-	"fmt"
-	"strings"
-
-	"github.com/Sirupsen/logrus"
-)
 
 // consoleLogger - default logger if not other logging is enabled.
 type consoleLogger struct {
 	Enable bool `json:"enable"`
-	Level  string `json:"level"`
 }
 
 func (c *consoleLogger) Validate() error {
-	level := strings.ToLower(c.Level)
-	if level != "error" && level != "fatal" && level != "" {
-		return fmt.Errorf("`%s` level value not recognized", c.Level)
-	}
 	return nil
 }
 
@@ -46,12 +36,7 @@ func enableConsoleLogger() {
 
 	consoleLogger := logrus.New()
 
-	// log.Out and log.Formatter use the default versions.
+	consoleLogger.Level = logrus.DebugLevel
-	// Only set specific log level.
-	lvl, err := logrus.ParseLevel(clogger.Level)
-	fatalIf(err, "Unknown log level found in the config file.")
-
-	consoleLogger.Level = lvl
 	consoleLogger.Formatter = new(logrus.TextFormatter)
 	log.mu.Lock()
 	log.loggers = append(log.loggers, consoleLogger)

cmd/logger-file-hook.go

@@ -17,24 +17,25 @@
 package cmd
 
 import (
+	"errors"
 	"fmt"
 	"io/ioutil"
 	"os"
-	"strings"
 
 	"github.com/Sirupsen/logrus"
 )
 
 type fileLogger struct {
 	Enable   bool   `json:"enable"`
-	Filename string `json:"fileName"`
+	Filename string `json:"filename"`
-	Level    string `json:"level"`
 }
 
 func (f *fileLogger) Validate() error {
-	level := strings.ToLower(f.Level)
+	if !f.Enable {
-	if level != "error" && level != "fatal" && level != "" {
+		return nil
-		return fmt.Errorf("`%s` level value not recognized", f.Level)
+	}
+	if f.Filename == "" {
+		return errors.New("Filename field empty")
 	}
 	return nil
 }
@@ -58,13 +59,10 @@ func enableFileLogger() {
 	// Add a local file hook.
 	fileLogger.Hooks.Add(&localFile{file})
 
-	lvl, err := logrus.ParseLevel(flogger.Level)
-	fatalIf(err, "Unknown log level found in the config file.")
-
 	// Set default JSON formatter.
 	fileLogger.Out = ioutil.Discard
 	fileLogger.Formatter = new(logrus.JSONFormatter)
-	fileLogger.Level = lvl // Minimum log level.
+	fileLogger.Level = logrus.DebugLevel // Minimum log level.
 
 	log.mu.Lock()
 	log.loggers = append(log.loggers, fileLogger)