Make Etcd log level configurable. (#15737)

Signed-off-by: Yuchen Gao <yuchen.gao@zilliz.com>

configs/milvus.yaml

@@ -21,6 +21,10 @@ etcd:
   rootPath: by-dev # The root path where data is stored in etcd
   metaSubPath: meta # metaRootPath = rootPath + '/' + metaSubPath
   kvSubPath: kv # kvRootPath = rootPath + '/' + kvSubPath
+  log:
+    level: info # Only supports debug, info, warn, error, panic, or fatal. Default 'info'.
+  use:
+    embed: false # Whether to enable embedded Etcd (an in-process EtcdServer).
 
 # Related configuration of minio, which is responsible for data persistence for Milvus.
 minio:
@@ -203,7 +207,7 @@ localStorage:
 
 # Configures the system log output.
 log:
-  level: debug # info, warn, error, panic, fatal
+  level: info # Only supports debug, info, warn, error, panic, or fatal. Default 'info'.
   file:
     rootPath: "" # default to stdout, stderr
     maxSize: 300 # MB

internal/util/etcd/etcd_util.go

@@ -46,6 +46,7 @@ func InitEtcdServer(etcdCfg *paramtable.EtcdConfig) error {
 			cfg = embed.NewConfig()
 		}
 		cfg.Dir = etcdCfg.DataDir
+		cfg.LogLevel = etcdCfg.EtcdLogLevel
 		e, err := embed.StartEtcd(cfg)
 		if err != nil {
 			return err

internal/util/paramtable/service_param.go

@@ -28,6 +28,7 @@ import (
 const (
 	// SuggestPulsarMaxMessageSize defines the maximum size of Pulsar message.
 	SuggestPulsarMaxMessageSize = 5 * 1024 * 1024
+	defaultEtcdLogLevel         = "info"
 )
 
 // ServiceParam is used to quickly and easily access all basic service configurations.
@@ -58,6 +59,7 @@ type EtcdConfig struct {
 	Endpoints    []string
 	MetaRootPath string
 	KvRootPath   string
+	EtcdLogLevel string
 
 	// --- Embed ETCD ---
 	UseEmbedEtcd bool
@@ -80,6 +82,7 @@ func (p *EtcdConfig) LoadCfgToMemory() {
 	}
 	p.initMetaRootPath()
 	p.initKvRootPath()
+	p.initEtcdLogLevel()
 }
 
 func (p *EtcdConfig) initUseEmbedEtcd() {
@@ -131,6 +134,10 @@ func (p *EtcdConfig) initKvRootPath() {
 	p.KvRootPath = path.Join(rootPath, subPath)
 }
 
+func (p *EtcdConfig) initEtcdLogLevel() {
+	p.EtcdLogLevel = p.Base.LoadWithDefault("etcd.log.level", defaultEtcdLogLevel)
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // --- pulsar ---
 type PulsarConfig struct {