Working vpc with two member instances

main.tf

@@ -20,10 +20,12 @@ module "ci_cd" {
   source		= "./modules/instance"
   label			= "ci-cd"
   root_pass		= var.root_pass
+  vpc_subnet_id		= module.main_vpc_subnet.vpc_subnet_id
 }
 
 module "observability" {
   source		= "./modules/instance"
   label			= "observability"
   root_pass		= var.root_pass
+  vpc_subnet_id		= module.main_vpc_subnet.vpc_subnet_id
 }

modules/instance/main.tf

@@ -5,4 +5,16 @@ resource "linode_instance" "eqit_instance" {
     type = var.type
     authorized_keys = var.authorized_keys
     root_pass = var.root_pass
+
+  interface {
+    purpose = "public"
+  }
+
+  interface {
+    purpose   = "vpc"
+    subnet_id = var.vpc_subnet_id
+    ipv4 {
+      vpc = "10.0.10.2"
+    }
+  }
 }

modules/instance/variables.tf

@@ -3,6 +3,10 @@ variable "root_pass" {
   description = "Your Linode's root user's password."
 }
 
+variable "vpc_subnet_id" {
+  description = "Linode VPC Subnet ID"
+}
+
 ## Optional Variables
 variable "image" {
   description = "Image to use for Linode instance"

modules/vpc-subnet/outputs.tf

@@ -0,0 +1,3 @@
+output "vpc_subnet_id" {
+  value		= linode_vpc_subnet.eqit_vpc_subnet.id
+}