create a custom module for ec2 instance with a amazon linux 2 ami ID

.gitignore

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+# Local .terraform directories
+**/.terraform/*
+
+# .tfstate files
+*.tfstate
+*.tfstate.*
+
+# Crash log files
+crash.log
+
+# Ignore any .tfvars files that are generated automatically for each Terraform run. Most
+# .tfvars files are managed as part of configuration and so should be included in
+# version control.
+#
+# example.tfvars
+
+# Ignore override files as they are usually used to override resources locally and so
+# are not checked in
+override.tf
+override.tf.json
+*_override.tf
+*_override.tf.json
+
+# Include override files you do wish to add to version control using negated pattern
+#
+# !example_override.tf
+
+# Include tfplan files to ignore the plan output of command: terraform plan -out=tfplan
+# example: *tfplan*

README.md

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+# DBurse-Terraform

Variables.tf

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+#--- root/variables.tf
+
+variable "ami_id" {
+  description = "ec2 ami_id"
+  type        = string
+  default     = "ami-033cfb3e88287e319"
+}
+
+variable "instance" {
+  description = "instance type"
+  type        = string
+  default     = "t2.micro"
+}
+
+variable "region" {
+  description = "instance region"
+  type        = string
+  default     = "us-east-1"
+}

ec2.tf

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-terraform {
-  required_providers {
-    aws = {
-      source  = "hashicorp/aws"
-      version = "~> 3.27"
-    }
-  }
-
-  required_version = ">= 0.14.9"
-}
-
-provider "aws" {
-  profile = "default"
-  region  = "us-west-2"
-}
-
-resource "aws_instance" "app_server" {
-  ami           = "ami-830c94e3"
-  instance_type = "t2.micro"
-
-  tags = {
-    Name = "ExampleAppServerInstance"
-  }
-}

main.tf

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+#---root/main.tf
+
+resource "aws_instance" "db_server" {
+  ami           = "ami-033cfb3e88287e319"
+  instance_type = "t2.micro"
+
+  tags = {
+    Name = "db_tag"
+  }
+}

module-ec2/child-Variables.tf

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+#---ChildModule/Variables.tf
+
+variable "ami_id" {}
+variable "instance" {}
+variable "region" {}

module-ec2/child-main.tf

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+#---ChildModule/main.tf
+
+module "terraformec2" {
+  source = "./module-ec2/terraformec2/"
+}

outputs.tf

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+#---root/outputs.tf
+
+output "public_ip" {
+  value = aws_instance.db_server.public_ip
+}
+
+output "ec2_tags" {
+  value = aws_instance.db_server.tags_all.Name
+}

provider.tf

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+#---root/provider.tf
+
+terraform {
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 4.0"
+    }
+  }
+
+  required_version = ">= 0.14.9"
+}
+
+provider "aws" {
+  profile = "default"
+  region  = "us-east-1"
+}

resize.sh

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+#!/bin/bash
+
+# Specify the desired volume size in GiB as a command line argument. If not specified, default to 20 GiB.
+SIZE=${1:-20}
+
+# Get the ID of the environment host Amazon EC2 instance.
+INSTANCEID=$(curl http://169.254.169.254/latest/meta-data/instance-id)
+REGION=$(curl -s http://169.254.169.254/latest/meta-data/placement/region)
+
+# Get the ID of the Amazon EBS volume associated with the instance.
+VOLUMEID=$(aws ec2 describe-instances \
+  --instance-id $INSTANCEID \
+  --query "Reservations[0].Instances[0].BlockDeviceMappings[0].Ebs.VolumeId" \
+  --output text \
+  --region $REGION)
+
+# Resize the EBS volume.
+aws ec2 modify-volume --volume-id $VOLUMEID --size $SIZE
+
+# Wait for the resize to finish.
+while [ \
+  "$(aws ec2 describe-volumes-modifications \
+    --volume-id $VOLUMEID \
+    --filters Name=modification-state,Values="optimizing","completed" \
+    --query "length(VolumesModifications)"\
+    --output text)" != "1" ]; do
+sleep 1
+done
+
+#Check if we're on an NVMe filesystem
+if [[ -e "/dev/xvda" && $(readlink -f /dev/xvda) = "/dev/xvda" ]]
+then
+  # Rewrite the partition table so that the partition takes up all the space that it can.
+  sudo growpart /dev/xvda 1
+
+  # Expand the size of the file system.
+  # Check if we're on AL2
+  STR=$(cat /etc/os-release)
+  SUB="VERSION_ID=\"2\""
+  if [[ "$STR" == *"$SUB"* ]]
+  then
+    sudo xfs_growfs -d /
+  else
+    sudo resize2fs /dev/xvda1
+  fi
+
+else
+  # Rewrite the partition table so that the partition takes up all the space that it can.
+  sudo growpart /dev/nvme0n1 1
+
+  # Expand the size of the file system.
+  # Check if we're on AL2
+  STR=$(cat /etc/os-release)
+  SUB="VERSION_ID=\"2\""
+  if [[ "$STR" == *"$SUB"* ]]
+  then
+    sudo xfs_growfs -d /
+  else
+    sudo resize2fs /dev/nvme0n1p1
+  fi
+fi