diff --git a/cmd/components/data_coord.go b/cmd/components/data_coord.go
index f9c0a56239eea0fc50a438c3ae35d6a21c6e7e21..2e556242c3a111153ef2192030e8003df5ebac1c 100644
--- a/cmd/components/data_coord.go
+++ b/cmd/components/data_coord.go
@@ -25,6 +25,7 @@ import (
 	"github.com/milvus-io/milvus/internal/util/dependency"
 	"github.com/milvus-io/milvus/pkg/log"
 	"github.com/milvus-io/milvus/pkg/util/typeutil"
+	"go.uber.org/zap"
 )
 
 // DataCoord implements grpc server of DataCoord server
@@ -46,6 +47,7 @@ func NewDataCoord(ctx context.Context, factory dependency.Factory) (*DataCoord,
 // Run starts service
 func (s *DataCoord) Run() error {
 	if err := s.svr.Run(); err != nil {
+		log.Error("DataCoord starts error", zap.Error(err))
 		return err
 	}
 	log.Debug("DataCoord successfully started")
diff --git a/cmd/components/data_node.go b/cmd/components/data_node.go
index 2802d4a0150200d90df0e1ba742b83e2e0ea5bdd..734d1e1686a54e1cc51266028195aac89d54f849 100644
--- a/cmd/components/data_node.go
+++ b/cmd/components/data_node.go
@@ -25,6 +25,7 @@ import (
 	"github.com/milvus-io/milvus/internal/util/dependency"
 	"github.com/milvus-io/milvus/pkg/log"
 	"github.com/milvus-io/milvus/pkg/util/typeutil"
+	"go.uber.org/zap"
 )
 
 // DataNode implements DataNode grpc server
@@ -49,7 +50,8 @@ func NewDataNode(ctx context.Context, factory dependency.Factory) (*DataNode, er
 // Run starts service
 func (d *DataNode) Run() error {
 	if err := d.svr.Run(); err != nil {
-		panic(err)
+		log.Error("DataNode starts error", zap.Error(err))
+		return err
 	}
 	log.Debug("Datanode successfully started")
 	return nil
diff --git a/cmd/components/index_node.go b/cmd/components/index_node.go
index 6b0ba5deff58cdf46a2c02c7fcca6fd60b4e30c3..9c874a8801bacedf4ac1ffae1b94924071c64ed5 100644
--- a/cmd/components/index_node.go
+++ b/cmd/components/index_node.go
@@ -25,6 +25,7 @@ import (
 	"github.com/milvus-io/milvus/internal/util/dependency"
 	"github.com/milvus-io/milvus/pkg/log"
 	"github.com/milvus-io/milvus/pkg/util/typeutil"
+	"go.uber.org/zap"
 )
 
 // IndexNode implements IndexNode grpc server
@@ -48,6 +49,7 @@ func NewIndexNode(ctx context.Context, factory dependency.Factory) (*IndexNode,
 // Run starts service
 func (n *IndexNode) Run() error {
 	if err := n.svr.Run(); err != nil {
+		log.Error("IndexNode starts error", zap.Error(err))
 		return err
 	}
 	log.Debug("IndexNode successfully started")
diff --git a/cmd/components/proxy.go b/cmd/components/proxy.go
index 8eb944c254aba8f0e1fce51e334c5e6919e30438..37bb9ef13873b5ac95236a92881faade395d75d6 100644
--- a/cmd/components/proxy.go
+++ b/cmd/components/proxy.go
@@ -19,14 +19,13 @@ package components
 import (
 	"context"
 
-	"go.uber.org/zap"
-
 	"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
 	"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
 	grpcproxy "github.com/milvus-io/milvus/internal/distributed/proxy"
 	"github.com/milvus-io/milvus/internal/util/dependency"
 	"github.com/milvus-io/milvus/pkg/log"
 	"github.com/milvus-io/milvus/pkg/util/typeutil"
+	"go.uber.org/zap"
 )
 
 // Proxy implements Proxy grpc server
@@ -50,7 +49,7 @@ func NewProxy(ctx context.Context, factory dependency.Factory) (*Proxy, error) {
 // Run starts service
 func (n *Proxy) Run() error {
 	if err := n.svr.Run(); err != nil {
-		log.Warn("failed to start Proxy", zap.Error(err))
+		log.Error("Proxy starts error", zap.Error(err))
 		return err
 	}
 	log.Info("Proxy successfully started")
diff --git a/cmd/components/query_coord.go b/cmd/components/query_coord.go
index 4e81ce6bfbd618ee4f5f5c03b7c477906b45d07a..3c893ad6976314f155aa1ee356c97ae9af73fa59 100644
--- a/cmd/components/query_coord.go
+++ b/cmd/components/query_coord.go
@@ -19,14 +19,14 @@ package components
 import (
 	"context"
 
+	"go.uber.org/zap"
+
 	"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
 	"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
+	grpcquerycoord "github.com/milvus-io/milvus/internal/distributed/querycoord"
 	"github.com/milvus-io/milvus/internal/util/dependency"
-
 	"github.com/milvus-io/milvus/pkg/log"
 	"github.com/milvus-io/milvus/pkg/util/typeutil"
-
-	grpcquerycoord "github.com/milvus-io/milvus/internal/distributed/querycoord"
 )
 
 // QueryCoord implements QueryCoord grpc server
@@ -39,7 +39,7 @@ type QueryCoord struct {
 func NewQueryCoord(ctx context.Context, factory dependency.Factory) (*QueryCoord, error) {
 	svr, err := grpcquerycoord.NewServer(ctx, factory)
 	if err != nil {
-		panic(err)
+		return nil, err
 	}
 
 	return &QueryCoord{
@@ -51,7 +51,8 @@ func NewQueryCoord(ctx context.Context, factory dependency.Factory) (*QueryCoord
 // Run starts service
 func (qs *QueryCoord) Run() error {
 	if err := qs.svr.Run(); err != nil {
-		panic(err)
+		log.Error("QueryCoord starts error", zap.Error(err))
+		return err
 	}
 	log.Debug("QueryCoord successfully started")
 	return nil
diff --git a/cmd/components/query_node.go b/cmd/components/query_node.go
index d686eaa7d61da45953f45324a6a4f0af9c37803b..f44cffa8ce1e0b919c19b7ac078e6c9704e35224 100644
--- a/cmd/components/query_node.go
+++ b/cmd/components/query_node.go
@@ -19,14 +19,14 @@ package components
 import (
 	"context"
 
+	"go.uber.org/zap"
+
 	"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
 	"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
+	grpcquerynode "github.com/milvus-io/milvus/internal/distributed/querynode"
 	"github.com/milvus-io/milvus/internal/util/dependency"
-
 	"github.com/milvus-io/milvus/pkg/log"
 	"github.com/milvus-io/milvus/pkg/util/typeutil"
-
-	grpcquerynode "github.com/milvus-io/milvus/internal/distributed/querynode"
 )
 
 // QueryNode implements QueryNode grpc server
@@ -52,7 +52,8 @@ func NewQueryNode(ctx context.Context, factory dependency.Factory) (*QueryNode,
 // Run starts service
 func (q *QueryNode) Run() error {
 	if err := q.svr.Run(); err != nil {
-		panic(err)
+		log.Error("QueryNode starts error", zap.Error(err))
+		return err
 	}
 	log.Debug("QueryNode successfully started")
 	return nil
diff --git a/cmd/components/root_coord.go b/cmd/components/root_coord.go
index c65bdf10be4c4d2492fceaab2c0d7ac978ab51a0..0201558d097a3a4f4181d5a29aea4b6bf649cce0 100644
--- a/cmd/components/root_coord.go
+++ b/cmd/components/root_coord.go
@@ -25,7 +25,6 @@ import (
 	"github.com/milvus-io/milvus/internal/util/dependency"
 	"github.com/milvus-io/milvus/pkg/log"
 	"github.com/milvus-io/milvus/pkg/util/typeutil"
-
 	"go.uber.org/zap"
 )