diff --git a/terraform/control-plane-disk.tf b/terraform/control-plane-disk.tf
index 45601d6..06fc958 100644
--- a/terraform/control-plane-disk.tf
+++ b/terraform/control-plane-disk.tf
@@ -1,6 +1,6 @@
 resource "sakuracloud_disk" "k8s_control_plane_disk" {
   count             = lookup(var.control_plane, terraform.workspace, 0)
-  name              = "k8s-control-plane-${count.index + 1}-${terraform.workspace}"
+  name              = "k8s-${terraform.workspace}-control-plane-${count.index + 1}"
   source_archive_id = data.sakuracloud_archive.ubuntu_archive.id
   size              = lookup(var.control_plane_disk, terraform.workspace, 0)
   tags              = ["k8s", terraform.workspace]
diff --git a/terraform/control-plane-server.tf b/terraform/control-plane-server.tf
index 3b75f51..9649833 100644
--- a/terraform/control-plane-server.tf
+++ b/terraform/control-plane-server.tf
@@ -1,6 +1,6 @@
 resource "sakuracloud_server" "k8s_control_plane" {
   count  = lookup(var.control_plane, terraform.workspace, 0)
-  name   = "k8s-control-plane-${count.index + 1}-${terraform.workspace}"
+  name   = "k8s-${terraform.workspace}-control-plane-${count.index + 1}"
   core   = lookup(var.control_plane_cpu, terraform.workspace, 0)
   memory = lookup(var.control_plane_mem, terraform.workspace, 0)
   disks  = [sakuracloud_disk.k8s_control_plane_disk[count.index].id]
@@ -14,7 +14,7 @@ resource "sakuracloud_server" "k8s_control_plane" {
     user_ip_address = "192.168.100.1${count.index}"
   }
   disk_edit_parameter {
-    hostname        = "k8s-control-plane-${count.index + 1}-${terraform.workspace}"
+    hostname        = "k8s-${terraform.workspace}-control-plane-${count.index + 1}"
     password        = var.cluster_pass
     disable_pw_auth = "true"
     ssh_key_ids     = [sakuracloud_ssh_key_gen.gen_key.id]
diff --git a/terraform/network-external.tf b/terraform/network-external.tf
index d10e2fa..be18177 100644
--- a/terraform/network-external.tf
+++ b/terraform/network-external.tf
@@ -10,7 +10,8 @@ resource "sakuracloud_internet" "k8s_external_switch" {
 
 resource "sakuracloud_subnet" "bgp_subnet" {
   internet_id = sakuracloud_internet.k8s_external_switch.id
-  next_hop    = sakuracloud_internet.k8s_external_switch.ip_addresses[length(sakuracloud_internet.k8s_external_switch.ip_addresses) - 11]
+  next_hop    = sakuracloud_server.k8s_router[0].ip_address
+  netmask     = 28
   timeouts {
     create = "1h"
     delete = "1h"
diff --git a/terraform/output.tf b/terraform/output.tf
index 74f58c8..d03ed5a 100644
--- a/terraform/output.tf
+++ b/terraform/output.tf
@@ -1,9 +1,9 @@
 output "vip_address" {
-  value = sakuracloud_internet.k8s_external_switch.ip_addresses[lookup(var.router, terraform.workspace, 0) + lookup(var.control_plane, terraform.workspace, 0)]
+  value = sakuracloud_internet.k8s_external_switch.ip_addresses[lookup(var.router, terraform.workspace, 0) + lookup(var.control_plane, terraform.workspace, 0) + lookup(var.worker_node, terraform.workspace, 0)]
 }
 
 output "external_address_range" {
-  value = format("%s/%s", sakuracloud_subnet.bgp_subnet.ip_addresses[0], lookup(var.external_subnet, terraform.workspace, 0))
+  value = format("%s/%s", sakuracloud_subnet.bgp_subnet.ip_addresses[0], 28)
 }
 
 output "k8s_router_ip_address" {
diff --git a/terraform/router-disk.tf b/terraform/router-disk.tf
index 4c78c6b..8bf5f57 100644
--- a/terraform/router-disk.tf
+++ b/terraform/router-disk.tf
@@ -1,6 +1,6 @@
 resource "sakuracloud_disk" "k8s_router_disk" {
   count             = lookup(var.router, terraform.workspace, 0)
-  name              = "k8s-router-${count.index + 1}-${terraform.workspace}"
+  name              = "k8s-${terraform.workspace}-router-${count.index + 1}"
   source_archive_id = data.sakuracloud_archive.ubuntu_archive.id
   size              = lookup(var.router_disk, terraform.workspace, 0)
   tags              = ["k8s", terraform.workspace]
diff --git a/terraform/router-server.tf b/terraform/router-server.tf
index 6d0b99f..c9577e0 100644
--- a/terraform/router-server.tf
+++ b/terraform/router-server.tf
@@ -1,6 +1,6 @@
 resource "sakuracloud_server" "k8s_router" {
   count  = lookup(var.router, terraform.workspace, 0)
-  name   = "k8s-router-${count.index + 1}-${terraform.workspace}"
+  name   = "k8s-${terraform.workspace}-router-${count.index + 1}"
   core   = lookup(var.router_cpu, terraform.workspace, 0)
   memory = lookup(var.router_mem, terraform.workspace, 0)
   disks  = [sakuracloud_disk.k8s_router_disk[count.index].id]
@@ -14,7 +14,7 @@ resource "sakuracloud_server" "k8s_router" {
     user_ip_address = "192.168.100.${count.index}"
   }
   disk_edit_parameter {
-    hostname        = "k8s-router-${count.index + 1}-${terraform.workspace}"
+    hostname        = "k8s-${terraform.workspace}-router-${count.index + 1}"
     password        = var.cluster_pass
     disable_pw_auth = "true"
     ssh_key_ids     = [sakuracloud_ssh_key_gen.gen_key.id]
diff --git a/terraform/vars.tf b/terraform/vars.tf
index d3fdf65..6c94f99 100644
--- a/terraform/vars.tf
+++ b/terraform/vars.tf
@@ -6,16 +6,14 @@ variable "cluster_pass" {
 variable "external_subnet" {
   type = map(any)
   default = {
-    wsp = 28
-    dev = 28
-    prd = 28
+    dev = 27
+    prd = 27
   }
 }
 
 variable "control_plane" {
   type = map(any)
   default = {
-    wsp = 3
     dev = 3
     prd = 3
   }
@@ -23,101 +21,86 @@ variable "control_plane" {
 variable "control_plane_cpu" {
   type = map(any)
   default = {
-    wsp = 4
-    dev = 4
-    prd = 4
+    dev = 2
+    prd = 2
   }
 }
 variable "control_plane_mem" {
   type = map(any)
   default = {
-    wsp = 8
-    dev = 8
-    prd = 8
+    dev = 2
+    prd = 2
   }
 }
 variable "control_plane_disk" {
   type = map(any)
   default = {
-    wsp = 40
-    dev = 40
-    prd = 40
+    dev = 20
+    prd = 20
   }
 }
 
 variable "worker_node" {
   type = map(any)
   default = {
-    wsp = 3
-    dev = 3
-    prd = 3
+    dev = 8
+    prd = 8
   }
 }
 variable "worker_node_cpu" {
   type = map(any)
   default = {
-    wsp = 4
-    dev = 4
-    prd = 4
+    dev = 2
+    prd = 2
   }
 }
 variable "worker_node_mem" {
   type = map(any)
   default = {
-    wsp = 16
-    dev = 8
-    prd = 16
+    dev = 2
+    prd = 2
   }
 }
 variable "worker_node_disk" {
   type = map(any)
   default = {
-    wsp = 40
-    dev = 40
-    prd = 40
+    dev = 20
+    prd = 20
   }
 }
-
 variable "worker_node_rook_disk" {
   type = map(any)
   default = {
-    wsp = 100
-    dev = 40
-    prd = 100
+    dev = 20
+    prd = 20
   }
 }
 
 variable "router" {
   type = map(any)
   default = {
-    wsp = "1"
-    dev = "1"
-    prd = "1"
-    bgp = "1"
+    dev = 1
+    prd = 1
   }
 }
-
 variable "router_cpu" {
   type = map(any)
   default = {
-    wsp = "2"
-    dev = "2"
-    prd = "2"
+    dev = 2
+    prd = 2
   }
 }
 variable "router_mem" {
   type = map(any)
   default = {
-    wsp = "2"
-    dev = "2"
-    prd = "2"
+    dev = 2
+    prd = 2
   }
 }
 variable "router_disk" {
   type = map(any)
   default = {
-    wsp = "20"
-    dev = "20"
-    prd = "20"
+    dev = 20
+    prd = 20
   }
 }
diff --git a/terraform/worker-node-disk.tf b/terraform/worker-node-disk.tf
index b7f48fe..c7f1857 100644
--- a/terraform/worker-node-disk.tf
+++ b/terraform/worker-node-disk.tf
@@ -1,6 +1,6 @@
 resource "sakuracloud_disk" "k8s_worker_node_disk" {
   count             = lookup(var.worker_node, terraform.workspace, 0)
-  name              = "k8s-worker-node-${count.index + 1}-${terraform.workspace}"
+  name              = "k8s-${terraform.workspace}-worker-node-${count.index + 1}"
   source_archive_id = data.sakuracloud_archive.ubuntu_archive.id
   size              = lookup(var.worker_node_disk, terraform.workspace, 0)
   tags              = ["k8s", terraform.workspace]
@@ -12,7 +12,7 @@ resource "sakuracloud_disk" "k8s_worker_node_disk" {
 
 resource "sakuracloud_disk" "k8s_rook_disk" {
   count = lookup(var.worker_node, terraform.workspace, 0)
-  name  = "k8s-rook-${count.index + 1}-${terraform.workspace}"
+  name  = "k8s-${terraform.workspace}-rook-${count.index + 1}"
   size  = lookup(var.worker_node_rook_disk, terraform.workspace, 0)
   tags  = ["k8s", terraform.workspace]
   timeouts {
diff --git a/terraform/worker-node-server.tf b/terraform/worker-node-server.tf
index 1538105..b7fc334 100644
--- a/terraform/worker-node-server.tf
+++ b/terraform/worker-node-server.tf
@@ -1,6 +1,6 @@
 resource "sakuracloud_server" "k8s_worker_node" {
   count  = lookup(var.worker_node, terraform.workspace, 0)
-  name   = "k8s-worker-node-${count.index + 1}-${terraform.workspace}"
+  name   = "k8s-${terraform.workspace}-worker-node-${count.index + 1}"
   core   = lookup(var.worker_node_cpu, terraform.workspace, 0)
   memory = lookup(var.worker_node_mem, terraform.workspace, 0)
   disks  = [sakuracloud_disk.k8s_worker_node_disk[count.index].id, sakuracloud_disk.k8s_rook_disk[count.index].id]
@@ -13,12 +13,12 @@ resource "sakuracloud_server" "k8s_worker_node" {
     user_ip_address = "192.168.100.2${count.index}"
   }
   disk_edit_parameter {
-    hostname        = "k8s-worker-node-${count.index + 1}-${terraform.workspace}"
+    hostname        = "k8s-${terraform.workspace}-worker-node-${count.index + 1}"
     password        = var.cluster_pass
     disable_pw_auth = "true"
     ssh_key_ids     = [sakuracloud_ssh_key_gen.gen_key.id]
     # note_ids        = ["<ID>", "<ID>"]
-    ip_address = sakuracloud_internet.k8s_external_switch.ip_addresses[count.index + length(sakuracloud_internet.k8s_external_switch.ip_addresses) - 4]
+    ip_address = sakuracloud_internet.k8s_external_switch.ip_addresses[count.index + lookup(var.router, terraform.workspace, 0) + lookup(var.control_plane, terraform.workspace, 0)]
     gateway    = sakuracloud_internet.k8s_external_switch.gateway
     netmask    = lookup(var.external_subnet, terraform.workspace, 0)
   }