diff --git a/cmd/varlogadm/cli.go b/cmd/varlogadm/cli.go
index accadfdc5..c9cfe7b95 100644
--- a/cmd/varlogadm/cli.go
+++ b/cmd/varlogadm/cli.go
@@ -88,7 +88,7 @@ func start(c *cli.Context) error {
 	if err != nil {
 		return err
 	}
-	logger = logger.Named("adm").With(zap.Uint32("cid", uint32(clusterID)))
+	logger = logger.Named("adm").With(zap.Int32("cid", int32(clusterID)))
 	defer func() {
 		_ = logger.Sync()
 	}()
diff --git a/cmd/varlogsn/varlogsn.go b/cmd/varlogsn/varlogsn.go
index f6ef5e92a..ad0e2e24b 100644
--- a/cmd/varlogsn/varlogsn.go
+++ b/cmd/varlogsn/varlogsn.go
@@ -92,7 +92,7 @@ func start(c *cli.Context) error {
 		return fmt.Errorf("flagReplicationClientWriteBufferSize: %w", err)
 	}
 
-	logger = logger.Named("sn").With(zap.Uint32("cid", uint32(clusterID)), zap.Int32("snid", int32(storageNodeID)))
+	logger = logger.Named("sn").With(zap.Int32("cid", int32(clusterID)), zap.Int32("snid", int32(storageNodeID)))
 
 	meterProviderOpts, err := flags.ParseTelemetryFlags(context.Background(), c, "sn", storageNodeID.String(), clusterID)
 	if err != nil {
diff --git a/internal/metarepos/config.go b/internal/metarepos/config.go
index cb82f04a4..3c73b58af 100644
--- a/internal/metarepos/config.go
+++ b/internal/metarepos/config.go
@@ -127,7 +127,7 @@ func newConfig(opts []Option) (config, error) {
 	}
 
 	cfg.logger = cfg.logger.Named("mr").With(
-		zap.Uint32("cid", uint32(cfg.clusterID)),
+		zap.Int32("cid", int32(cfg.clusterID)),
 		zap.Uint64("nodeid", uint64(cfg.nodeID)),
 	)
 
diff --git a/internal/storagenode/volume/volume.go b/internal/storagenode/volume/volume.go
index fa0f70ef5..1b973e9b3 100644
--- a/internal/storagenode/volume/volume.go
+++ b/internal/storagenode/volume/volume.go
@@ -45,7 +45,7 @@ func (dd *DataDir) String() string {
 // Valid if the cluster ID and storage node ID are correct and the data directory is writable.
 func (dd *DataDir) Valid(cid types.ClusterID, snid types.StorageNodeID) error {
 	if dd.ClusterID != cid {
-		return fmt.Errorf("unexpected cluster id %d", uint32(dd.ClusterID))
+		return fmt.Errorf("unexpected cluster id %d", dd.ClusterID)
 	}
 	if dd.StorageNodeID != snid {
 		return fmt.Errorf("unexpected storage node id %d", int32(dd.StorageNodeID))
diff --git a/pkg/types/types.go b/pkg/types/types.go
index 2f703c186..35c18f467 100644
--- a/pkg/types/types.go
+++ b/pkg/types/types.go
@@ -10,17 +10,17 @@ import (
 	"sync/atomic"
 )
 
-type ClusterID uint32
+type ClusterID int32
 
 var _ fmt.Stringer = (*ClusterID)(nil)
 
 func ParseClusterID(s string) (ClusterID, error) {
-	id, err := strconv.ParseUint(s, 10, 32)
+	id, err := strconv.ParseInt(s, 10, 32)
 	return ClusterID(id), err
 }
 
 func (cid ClusterID) String() string {
-	return strconv.FormatUint(uint64(cid), 10)
+	return strconv.FormatInt(int64(cid), 10)
 }
 
 type StorageNodeID int32
diff --git a/proto/mrpb/management.pb.go b/proto/mrpb/management.pb.go
index 9d2a42d19..92a6542d8 100644
--- a/proto/mrpb/management.pb.go
+++ b/proto/mrpb/management.pb.go
@@ -391,49 +391,49 @@ func init() {
 func init() { proto.RegisterFile("proto/mrpb/management.proto", fileDescriptor_8658321b298c6927) }
 
 var fileDescriptor_8658321b298c6927 = []byte{
-	// 662 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xd4, 0x55, 0xcb, 0x6e, 0xd3, 0x4c,
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-	0x1b, 0x6b, 0x12, 0xc2, 0xb4, 0x4c, 0x7d, 0xf7, 0xeb, 0x40, 0x91, 0xce, 0x07, 0x8a, 0xf4, 0x71,
-	0xa8, 0x64, 0x3e, 0x0d, 0x15, 0xe9, 0x7c, 0xa8, 0x64, 0xbe, 0x0d, 0x95, 0xcc, 0x5b, 0xed, 0xda,
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-	0x79, 0x16, 0xce, 0x06, 0x00, 0x00,
+	// 658 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xd4, 0x55, 0xcb, 0x6e, 0xd3, 0x40,
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+	0xcd, 0xbc, 0xb0, 0x1f, 0xfe, 0x0e, 0x00, 0x00, 0xff, 0xff, 0x08, 0x80, 0xa8, 0x1b, 0xce, 0x06,
+	0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
diff --git a/proto/mrpb/management.proto b/proto/mrpb/management.proto
index cad46c01f..c0358f862 100644
--- a/proto/mrpb/management.proto
+++ b/proto/mrpb/management.proto
@@ -15,7 +15,7 @@ option (gogoproto.goproto_unrecognized_all) = false;
 option (gogoproto.goproto_sizecache_all) = false;
 
 message AddPeerRequest {
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID"
   ];
@@ -29,7 +29,7 @@ message AddPeerRequest {
 }
 
 message RemovePeerRequest {
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID"
   ];
@@ -41,7 +41,7 @@ message RemovePeerRequest {
 }
 
 message GetClusterInfoRequest {
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID"
   ];
@@ -54,7 +54,7 @@ message ClusterInfo {
     bool learner = 3;
   }
 
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID",
     (gogoproto.jsontag) = "clusterId"
diff --git a/proto/mrpb/metadata_repository.pb.go b/proto/mrpb/metadata_repository.pb.go
index c796a1903..92afc1d43 100644
--- a/proto/mrpb/metadata_repository.pb.go
+++ b/proto/mrpb/metadata_repository.pb.go
@@ -461,52 +461,52 @@ func init() {
 }
 
 var fileDescriptor_0ffe516e0fdff161 = []byte{
-	// 719 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xdc, 0x96, 0xcd, 0x4e, 0xdb, 0x40,
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 }
 
 // Reference imports to suppress errors if they are not otherwise used.
diff --git a/proto/mrpb/metadata_repository.proto b/proto/mrpb/metadata_repository.proto
index 924fbad94..899931b7d 100644
--- a/proto/mrpb/metadata_repository.proto
+++ b/proto/mrpb/metadata_repository.proto
@@ -30,7 +30,7 @@ message LogStreamRequest {
 }
 
 message SealRequest {
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID"
   ];
@@ -49,7 +49,7 @@ message SealResponse {
 }
 
 message UnsealRequest {
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID"
   ];
diff --git a/proto/snpb/management.pb.go b/proto/snpb/management.pb.go
index 55b0d8e07..7f6202024 100644
--- a/proto/snpb/management.pb.go
+++ b/proto/snpb/management.pb.go
@@ -803,68 +803,68 @@ func init() { proto.RegisterFile("proto/snpb/management.proto", fileDescriptor_b
 var fileDescriptor_b2a108895042472a = []byte{
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 }
 
 // Reference imports to suppress errors if they are not otherwise used.
diff --git a/proto/snpb/management.proto b/proto/snpb/management.proto
index 156dd231d..8d5cd0ce4 100644
--- a/proto/snpb/management.proto
+++ b/proto/snpb/management.proto
@@ -19,7 +19,7 @@ option (gogoproto.goproto_unrecognized_all) = false;
 option (gogoproto.goproto_sizecache_all) = false;
 
 message GetMetadataRequest {
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID"
   ];
@@ -30,7 +30,7 @@ message GetMetadataResponse {
 }
 
 message AddLogStreamReplicaRequest {
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID"
   ];
@@ -54,7 +54,7 @@ message AddLogStreamReplicaResponse {
 }
 
 message RemoveLogStreamRequest {
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID"
   ];
@@ -73,7 +73,7 @@ message RemoveLogStreamRequest {
 }
 
 message SealRequest {
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID"
   ];
@@ -104,7 +104,7 @@ message SealResponse {
 }
 
 message UnsealRequest {
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID"
   ];
@@ -133,7 +133,7 @@ message SyncRequest {
     ];
     string address = 2;
   }
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID"
   ];
diff --git a/proto/snpb/metadata.pb.go b/proto/snpb/metadata.pb.go
index 945d7a49b..f0ae277ec 100644
--- a/proto/snpb/metadata.pb.go
+++ b/proto/snpb/metadata.pb.go
@@ -255,53 +255,53 @@ func init() {
 func init() { proto.RegisterFile("proto/snpb/metadata.proto", fileDescriptor_b0d7c3885ca513ae) }
 
 var fileDescriptor_b0d7c3885ca513ae = []byte{
-	// 727 bytes of a gzipped FileDescriptorProto
+	// 726 bytes of a gzipped FileDescriptorProto
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+	0x02, 0xf2, 0x77, 0x06, 0x00, 0x00,
 }
 
 func (this *StorageNodeMetadataDescriptor) Equal(that interface{}) bool {
diff --git a/proto/snpb/metadata.proto b/proto/snpb/metadata.proto
index 062059f75..4cf524730 100644
--- a/proto/snpb/metadata.proto
+++ b/proto/snpb/metadata.proto
@@ -24,7 +24,7 @@ message StorageNodeMetadataDescriptor {
   option (gogoproto.equal) = true;
 
   // ClusterID is the identifier of the cluster.
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID",
     (gogoproto.jsontag) = "clusterId"
diff --git a/proto/snpb/replicator.pb.go b/proto/snpb/replicator.pb.go
index c62a317bd..07d825eda 100644
--- a/proto/snpb/replicator.pb.go
+++ b/proto/snpb/replicator.pb.go
@@ -663,70 +663,70 @@ func init() {
 func init() { proto.RegisterFile("proto/snpb/replicator.proto", fileDescriptor_85705cb817486b63) }
 
 var fileDescriptor_85705cb817486b63 = []byte{
-	// 1002 bytes of a gzipped FileDescriptorProto
+	// 1000 bytes of a gzipped FileDescriptorProto
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+	0xdb, 0xd5, 0x7c, 0xfd, 0xd6, 0xd1, 0x71, 0x63, 0x31, 0x83, 0xad, 0xd3, 0x7e, 0xe8, 0x93, 0x64,
+	0x37, 0x6b, 0xf7, 0x03, 0xbc, 0x5b, 0x2d, 0x4c, 0xed, 0x66, 0x31, 0x3b, 0x62, 0xf5, 0xb9, 0x6f,
+	0x7f, 0xd4, 0x72, 0x3f, 0x9f, 0x68, 0xb9, 0x5f, 0x4f, 0x34, 0x65, 0xf5, 0x2c, 0x0f, 0x80, 0xb3,
+	0xff, 0x17, 0xb4, 0x05, 0xe5, 0xec, 0xf4, 0x68, 0xe5, 0xdc, 0x29, 0xa7, 0x0d, 0x55, 0xd7, 0x2e,
+	0x0b, 0xcb, 0xcf, 0x69, 0xae, 0xa9, 0xa0, 0x0e, 0x94, 0xd2, 0xeb, 0x04, 0xbd, 0x7a, 0xa1, 0x69,
+	0x13, 0x9f, 0x81, 0xfa, 0xca, 0x25, 0xd1, 0x94, 0x0c, 0x7d, 0x0a, 0xf3, 0xe7, 0xc4, 0x41, 0xb7,
+	0x2f, 0xde, 0x43, 0xd3, 0x25, 0x1a, 0xff, 0x04, 0xc9, 0x98, 0xbf, 0x80, 0xa5, 0x73, 0xa1, 0xc4,
+	0x61, 0xff, 0x19, 0x7f, 0x53, 0x59, 0x7b, 0x78, 0x3a, 0xd2, 0x94, 0xa7, 0x23, 0x4d, 0xf9, 0xee,
+	0x4c, 0xcb, 0x3d, 0x39, 0xd3, 0x94, 0xa7, 0x67, 0x5a, 0xee, 0x8f, 0x33, 0x2d, 0xf7, 0x99, 0x71,
+	0xe9, 0xc0, 0x65, 0xff, 0x97, 0xfb, 0x33, 0xe2, 0xf9, 0xee, 0xdf, 0x01, 0x00, 0x00, 0xff, 0xff,
+	0xc7, 0x56, 0x67, 0x23, 0x74, 0x0a, 0x00, 0x00,
 }
 
 func (x SyncState) String() string {
diff --git a/proto/snpb/replicator.proto b/proto/snpb/replicator.proto
index 4da51e371..2bfe1ee32 100644
--- a/proto/snpb/replicator.proto
+++ b/proto/snpb/replicator.proto
@@ -85,7 +85,7 @@ message SyncRange {
 // indicates the last commit sent from the metadata repository to the source.
 message SyncInitRequest {
   // ClusterID is the identifier of the cluster.
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID"
   ];
@@ -126,7 +126,7 @@ message SyncPayload {
 }
 
 message SyncReplicateRequest {
-  uint32 cluster_id = 1 [
+  int32 cluster_id = 1 [
     (gogoproto.casttype) = "github.com/kakao/varlog/pkg/types.ClusterID",
     (gogoproto.customname) = "ClusterID"
   ];