diff --git a/terraform/instance.tf b/terraform/instance.tf
index 4c653bb..7250b9f 100644
--- a/terraform/instance.tf
+++ b/terraform/instance.tf
@@ -1,47 +1,125 @@
-resource "oci_core_instance" "generated_oci_core_instance" {
+resource "oci_core_instance" "a1flex_instance01" {
+  compartment_id      = var.OCID_COMPARTMENT
+  availability_domain = "dhYs:AP-TOKYO-1-AD-1"
+  fault_domain        = "FAULT-DOMAIN-2"
+
+  display_name = "arm-ubuntu-01"
+  shape        = "VM.Standard.A1.Flex"
+
+  shape_config {
+    memory_in_gbs = "6"
+    ocpus         = "1"
+  }
+
+  source_details {
+    source_type             = "image"
+    boot_volume_size_in_gbs = "50"
+
+    # Ubuntu 20.04
+    # https://docs.oracle.com/en-us/iaas/images/image/51111a15-54e5-4af7-adb9-cea542248147/
+    source_id = "ocid1.image.oc1.ap-tokyo-1.aaaaaaaaxmfmyofygv4bmv533zrkpt5suie2cl5s5ajfx4f3dqv23c3vccpa"
+  }
+
   agent_config {
     is_management_disabled = "false"
     is_monitoring_disabled = "false"
+
     plugins_config {
       desired_state = "DISABLED"
       name          = "Vulnerability Scanning"
     }
+
     plugins_config {
       desired_state = "ENABLED"
       name          = "Compute Instance Monitoring"
     }
+
     plugins_config {
       desired_state = "DISABLED"
       name          = "Bastion"
     }
   }
+
   availability_config {
     recovery_action = "RESTORE_INSTANCE"
   }
-  availability_domain = "dhYs:AP-TOKYO-1-AD-1"
-  compartment_id      = var.OCID_COMPARTMENT
+
   create_vnic_details {
     assign_private_dns_record = "true"
     assign_public_ip          = "true"
     subnet_id                 = oci_core_subnet.ubuntu_subnet.id
   }
-  display_name = "ubuntu-01"
+
   instance_options {
     are_legacy_imds_endpoints_disabled = "false"
   }
+
   is_pv_encryption_in_transit_enabled = "true"
+
   metadata = {
     "ssh_authorized_keys" = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAs3X141dqN0IgcRzUo/0j1XVmy5/BcDD8RrXwygxdaX sksat@yohanesu"
   }
-  shape = "VM.Standard.A1.Flex"
+}
+
+resource "oci_core_instance" "x86_test_instance" {
+  compartment_id      = var.OCID_COMPARTMENT
+  availability_domain = "dhYs:AP-TOKYO-1-AD-1"
+  fault_domain        = "FAULT-DOMAIN-2"
+
+  display_name = "x86-ubuntu-01"
+  shape        = "VM.Standard.E2.1.Micro"
+
   shape_config {
-    memory_in_gbs = "6"
+    memory_in_gbs = "1"
     ocpus         = "1"
   }
+
   source_details {
-    boot_volume_size_in_gbs = "50"
-    source_id               = var.OCID_SOURCE
     source_type             = "image"
+    boot_volume_size_in_gbs = "50"
+
+    # Ubuntu 20.04 Minimal
+    # https://docs.oracle.com/en-us/iaas/images/image/cc6e4086-515b-4254-99ea-171acc5e7460/
+    source_id = "ocid1.image.oc1.ap-tokyo-1.aaaaaaaato55by5l2yabyitrv62utowyisopehtvqbjrui6vympbi5b57k7q"
   }
-}
 
+  agent_config {
+    is_management_disabled = "false"
+    is_monitoring_disabled = "false"
+
+    plugins_config {
+      desired_state = "DISABLED"
+      name          = "Vulnerability Scanning"
+    }
+
+    plugins_config {
+      desired_state = "ENABLED"
+      name          = "Compute Instance Monitoring"
+    }
+
+    plugins_config {
+      desired_state = "DISABLED"
+      name          = "Bastion"
+    }
+  }
+
+  availability_config {
+    recovery_action = "RESTORE_INSTANCE"
+  }
+
+  create_vnic_details {
+    assign_private_dns_record = "true"
+    assign_public_ip          = "true"
+    subnet_id                 = oci_core_subnet.ubuntu_subnet.id
+  }
+
+  instance_options {
+    are_legacy_imds_endpoints_disabled = "false"
+  }
+
+  is_pv_encryption_in_transit_enabled = "true"
+
+  metadata = {
+    "ssh_authorized_keys" = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAs3X141dqN0IgcRzUo/0j1XVmy5/BcDD8RrXwygxdaX sksat@yohanesu"
+  }
+}
diff --git a/terraform/network.tf b/terraform/network.tf
index 34d69c9..8d18006 100644
--- a/terraform/network.tf
+++ b/terraform/network.tf
@@ -1,11 +1,26 @@
+resource "oci_core_vcn" "ubuntu_vcn" {
+  compartment_id = var.OCID_COMPARTMENT
+
+  display_name   = "ubuntu VCN"
+  dns_label      = "defaultvcn"
+  is_ipv6enabled = false
+
+  cidr_blocks = [
+    "10.0.0.0/16"
+  ]
+}
+
 resource "oci_core_subnet" "ubuntu_subnet" {
   compartment_id = var.OCID_COMPARTMENT
 
-  vcn_id         = oci_core_vcn.ubuntu_vcn.id
-  cidr_block     = "10.0.0.0/24"
-  ipv6cidr_block = ""
+  display_name = "ubuntu subnet"
+  dns_label    = "defaultsubnet24"
+
+  vcn_id     = oci_core_vcn.ubuntu_vcn.id
+  cidr_block = "10.0.0.0/24"
+  #ipv6cidr_block = ""
+  route_table_id = oci_core_vcn.ubuntu_vcn.default_route_table_id
 
-  dns_label                  = "subnet08240556"
   prohibit_internet_ingress  = false
   prohibit_public_ip_on_vnic = false
 
@@ -16,13 +31,18 @@ resource "oci_core_subnet" "ubuntu_subnet" {
   ]
 }
 
-resource "oci_core_vcn" "ubuntu_vcn" {
+resource "oci_core_internet_gateway" "default_oci_core_internet_gateway" {
   compartment_id = var.OCID_COMPARTMENT
+  display_name   = "Internet Gateway Default OCI core vcn"
+  enabled        = "true"
+  vcn_id         = oci_core_vcn.ubuntu_vcn.id
+}
 
-  dns_label      = "vcn08240556"
-  is_ipv6enabled = false
-
-  cidr_blocks = [
-    "10.0.0.0/16"
-  ]
+resource "oci_core_default_route_table" "default_oci_core_default_route_table" {
+  route_rules {
+    destination       = "0.0.0.0/0"
+    destination_type  = "CIDR_BLOCK"
+    network_entity_id = oci_core_internet_gateway.default_oci_core_internet_gateway.id
+  }
+  manage_default_resource_id = oci_core_vcn.ubuntu_vcn.default_route_table_id
 }