diff --git a/cmd/uncloud/machine/init.go b/cmd/uncloud/machine/init.go
index 2c37fea1..b72d0746 100644
--- a/cmd/uncloud/machine/init.go
+++ b/cmd/uncloud/machine/init.go
@@ -10,10 +10,8 @@ import (
 )
 
 type initOptions struct {
-	name          string
-	network       string
-	userPublicKey string
-
+	name    string
+	network string
 	sshKey  string
 	cluster string
 }
@@ -54,9 +52,6 @@ func NewInitCommand() *cobra.Command {
 		&opts.network, "network", network.DefaultNetwork.String(),
 		"IPv4 network CIDR to use for machines and services",
 	)
-	//cmd.Flags().StringVar(&opts.userPublicKey, "user-pubkey", "",
-	//	"User's public key which will be able to access the cluster (hex-encoded)")
-
 	cmd.Flags().StringVarP(
 		&opts.sshKey, "ssh-key", "i", "",
 		"path to SSH private key for SSH remote login (default ~/.ssh/id_*)",
diff --git a/internal/cli/cli.go b/internal/cli/cli.go
index b4008eb1..8f93ec2d 100644
--- a/internal/cli/cli.go
+++ b/internal/cli/cli.go
@@ -39,32 +39,16 @@ func New(configPath string) (*CLI, error) {
 	}, nil
 }
 
-func (cli *CLI) CreateCluster(name string, userPrivateKey secret.Secret) error {
+func (cli *CLI) CreateCluster(name string) error {
 	if _, ok := cli.config.Clusters[name]; ok {
 		return fmt.Errorf("cluster %q already exists", name)
 	}
-	if userPrivateKey == nil {
-		user, err := client.NewUser(nil)
-		if err != nil {
-			return fmt.Errorf("generate user: %w", err)
-		}
-		userPrivateKey = user.PrivateKey()
-	}
-
 	cli.config.Clusters[name] = &config.Cluster{
-		Name:           name,
-		UserPrivateKey: userPrivateKey,
+		Name: name,
 	}
 	return cli.config.Save()
 }
 
-func (cli *CLI) CreateDefaultCluster() error {
-	if err := cli.CreateCluster(defaultClusterName, nil); err != nil {
-		return err
-	}
-	return cli.SetCurrentCluster(defaultClusterName)
-}
-
 func (cli *CLI) SetCurrentCluster(name string) error {
 	if _, ok := cli.config.Clusters[name]; !ok {
 		return ErrNotFound
@@ -139,10 +123,6 @@ func (cli *CLI) initRemoteMachine(
 	if _, ok := cli.config.Clusters[clusterName]; ok {
 		return fmt.Errorf("cluster %q already exists", clusterName)
 	}
-	user, err := client.NewUser(nil)
-	if err != nil {
-		return fmt.Errorf("generate cluster user: %w", err)
-	}
 
 	// Provision the remote machine by installing the Uncloud daemon and dependencies over SSH.
 	sshClient, err := sshexec.Connect(remoteMachine.User, remoteMachine.Host, remoteMachine.Port, remoteMachine.KeyPath)
@@ -179,12 +159,6 @@ func (cli *CLI) initRemoteMachine(
 	req := &pb.InitClusterRequest{
 		MachineName: machineName,
 		Network:     pb.NewIPPrefix(netPrefix),
-		User: &pb.User{
-			Network: &pb.NetworkConfig{
-				ManagementIp: pb.NewIP(user.ManagementIP()),
-				PublicKey:    user.PublicKey(),
-			},
-		},
 	}
 	resp, err := machineClient.InitCluster(ctx, req)
 	if err != nil {
@@ -192,7 +166,7 @@ func (cli *CLI) initRemoteMachine(
 	}
 	fmt.Printf("Cluster %q initialised with machine %q\n", clusterName, resp.Machine.Name)
 
-	if err = cli.CreateCluster(clusterName, user.PrivateKey()); err != nil {
+	if err = cli.CreateCluster(clusterName); err != nil {
 		return fmt.Errorf("save cluster to config: %w", err)
 	}
 	// Set the current cluster to the just created one if it is the only cluster in the config.
diff --git a/internal/cli/config/cluster.go b/internal/cli/config/cluster.go
index cdcfe990..72febcb4 100644
--- a/internal/cli/config/cluster.go
+++ b/internal/cli/config/cluster.go
@@ -1,10 +1,6 @@
 package config
 
-import "uncloud/internal/secret"
-
 type Cluster struct {
 	Name        string              `toml:"-"`
 	Connections []MachineConnection `toml:"connections"`
-	// UserPrivateKey is the user's WireGuard private key used to connect to cluster machines.
-	UserPrivateKey secret.Secret `toml:"user_private_key"`
 }
diff --git a/internal/machine/api/pb/machine.pb.go b/internal/machine/api/pb/machine.pb.go
index b498ee8a..ff48c4ed 100644
--- a/internal/machine/api/pb/machine.pb.go
+++ b/internal/machine/api/pb/machine.pb.go
@@ -28,7 +28,6 @@ type InitClusterRequest struct {
 
 	MachineName string    `protobuf:"bytes,1,opt,name=machineName,proto3" json:"machineName,omitempty"`
 	Network     *IPPrefix `protobuf:"bytes,2,opt,name=network,proto3" json:"network,omitempty"`
-	User        *User     `protobuf:"bytes,3,opt,name=user,proto3" json:"user,omitempty"`
 }
 
 func (x *InitClusterRequest) Reset() {
@@ -77,13 +76,6 @@ func (x *InitClusterRequest) GetNetwork() *IPPrefix {
 	return nil
 }
 
-func (x *InitClusterRequest) GetUser() *User {
-	if x != nil {
-		return x.User
-	}
-	return nil
-}
-
 type InitClusterResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -245,49 +237,47 @@ var file_internal_machine_api_pb_machine_proto_rawDesc = []byte{
 	0x70, 0x62, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a,
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 }
 
 var (
@@ -309,29 +299,27 @@ var file_internal_machine_api_pb_machine_proto_goTypes = []any{
 	(*JoinClusterRequest)(nil),  // 2: api.JoinClusterRequest
 	(*TokenResponse)(nil),       // 3: api.TokenResponse
 	(*IPPrefix)(nil),            // 4: api.IPPrefix
-	(*User)(nil),                // 5: api.User
-	(*MachineInfo)(nil),         // 6: api.MachineInfo
-	(*emptypb.Empty)(nil),       // 7: google.protobuf.Empty
+	(*MachineInfo)(nil),         // 5: api.MachineInfo
+	(*emptypb.Empty)(nil),       // 6: google.protobuf.Empty
 }
 var file_internal_machine_api_pb_machine_proto_depIdxs = []int32{
 	4, // 0: api.InitClusterRequest.network:type_name -> api.IPPrefix
-	5, // 1: api.InitClusterRequest.user:type_name -> api.User
-	6, // 2: api.InitClusterResponse.machine:type_name -> api.MachineInfo
-	6, // 3: api.JoinClusterRequest.machine:type_name -> api.MachineInfo
-	6, // 4: api.JoinClusterRequest.other_machines:type_name -> api.MachineInfo
-	0, // 5: api.Machine.InitCluster:input_type -> api.InitClusterRequest
-	2, // 6: api.Machine.JoinCluster:input_type -> api.JoinClusterRequest
-	7, // 7: api.Machine.Token:input_type -> google.protobuf.Empty
-	7, // 8: api.Machine.Inspect:input_type -> google.protobuf.Empty
-	1, // 9: api.Machine.InitCluster:output_type -> api.InitClusterResponse
-	7, // 10: api.Machine.JoinCluster:output_type -> google.protobuf.Empty
-	3, // 11: api.Machine.Token:output_type -> api.TokenResponse
-	6, // 12: api.Machine.Inspect:output_type -> api.MachineInfo
-	9, // [9:13] is the sub-list for method output_type
-	5, // [5:9] is the sub-list for method input_type
-	5, // [5:5] is the sub-list for extension type_name
-	5, // [5:5] is the sub-list for extension extendee
-	0, // [0:5] is the sub-list for field type_name
+	5, // 1: api.InitClusterResponse.machine:type_name -> api.MachineInfo
+	5, // 2: api.JoinClusterRequest.machine:type_name -> api.MachineInfo
+	5, // 3: api.JoinClusterRequest.other_machines:type_name -> api.MachineInfo
+	0, // 4: api.Machine.InitCluster:input_type -> api.InitClusterRequest
+	2, // 5: api.Machine.JoinCluster:input_type -> api.JoinClusterRequest
+	6, // 6: api.Machine.Token:input_type -> google.protobuf.Empty
+	6, // 7: api.Machine.Inspect:input_type -> google.protobuf.Empty
+	1, // 8: api.Machine.InitCluster:output_type -> api.InitClusterResponse
+	6, // 9: api.Machine.JoinCluster:output_type -> google.protobuf.Empty
+	3, // 10: api.Machine.Token:output_type -> api.TokenResponse
+	5, // 11: api.Machine.Inspect:output_type -> api.MachineInfo
+	8, // [8:12] is the sub-list for method output_type
+	4, // [4:8] is the sub-list for method input_type
+	4, // [4:4] is the sub-list for extension type_name
+	4, // [4:4] is the sub-list for extension extendee
+	0, // [0:4] is the sub-list for field type_name
 }
 
 func init() { file_internal_machine_api_pb_machine_proto_init() }
diff --git a/internal/machine/api/pb/machine.proto b/internal/machine/api/pb/machine.proto
index 3b0a0f65..1295ace1 100644
--- a/internal/machine/api/pb/machine.proto
+++ b/internal/machine/api/pb/machine.proto
@@ -18,7 +18,6 @@ service Machine {
 message InitClusterRequest {
   string machineName = 1;
   IPPrefix network = 2;
-  User user = 3;
 }
 
 message InitClusterResponse {