main.tf

@@ -0,0 +1,206 @@
+# create vpc
+
+resource "aws_vpc" "main" {
+  cidr_block       = var.cidr
+  instance_tenancy = "default"
+
+  tags = {
+    Name = var.vpc_name
+  }
+}
+
+resource "aws_subnet" "subnet1" {
+  vpc_id            = aws_vpc.main.id
+  cidr_block        = var.subnet1_cidr
+  availability_zone = "us-east-1a"
+
+  tags = {
+    Name = "pub-subnet1"
+  }
+}
+
+
+resource "aws_subnet" "subnet2" {
+  vpc_id            = aws_vpc.main.id
+  cidr_block        = var.subnet2_cidr
+  availability_zone = "us-east-1b"
+
+  tags = {
+    Name = "pub-subnet2"
+  }
+}
+
+resource "aws_subnet" "subnet3" {
+  vpc_id            = aws_vpc.main.id
+  cidr_block        = var.subnet3_cidr
+  availability_zone = "us-east-1a"
+
+  tags = {
+    Name = "pvt-subnet1"
+  }
+}
+
+
+resource "aws_subnet" "subnet4" {
+  vpc_id            = aws_vpc.main.id
+  cidr_block        = var.subnet4_cidr
+  availability_zone = "us-east-1b"
+
+  tags = {
+    Name = "pvt-subnet2"
+  }
+}
+
+
+resource "aws_internet_gateway" "web-gw" {
+  vpc_id = aws_vpc.main.id
+
+  tags = {
+    Name = "web-internetgateway"
+  }
+}
+
+resource "aws_route_table" "pubroute" {
+  vpc_id = aws_vpc.main.id
+
+  route {
+    cidr_block = "0.0.0.0/0"
+    gateway_id = aws_internet_gateway.web-gw.id
+  }
+
+
+  tags = {
+    Name = "pubroute"
+  }
+}
+
+resource "aws_route_table" "pvtroute" {
+  vpc_id = aws_vpc.main.id
+
+ 
+  tags = {
+    Name = "pvtroute"
+  }
+}
+
+resource "aws_route_table_association" "pubsub1" {
+  subnet_id      = aws_subnet.subnet1.id
+  route_table_id = aws_route_table.pubroute.id
+}
+
+resource "aws_route_table_association" "pvtsub2" {
+  subnet_id      = aws_subnet.subnet2.id
+  route_table_id = aws_route_table.pubroute.id
+}
+
+
+resource "aws_route_table_association" "pvtsub1" {
+  subnet_id      = aws_subnet.subnet3.id
+  route_table_id = aws_route_table.pvtroute.id
+}
+
+resource "aws_route_table_association" "pvtsub2" {
+  subnet_id      = aws_subnet.subnet4.id
+  route_table_id = aws_route_table.pvtroute.id
+}
+
+
+############  EC2 Creation with ALB & Auto scaling Group ##########
+
+resource "aws_security_group" "web_sg" {
+  name_prefix = "web-sg-"
+
+  # Inbound rule for SSH traffic
+  ingress {
+    from_port   = 22
+    to_port     = 22
+    protocol    = "tcp"
+    cidr_blocks = ["0.0.0.0/0"] 
+  }
+
+  # Inbound rule for HTTP traffic
+  ingress {
+    from_port   = 80
+    to_port     = 80
+    protocol    = "tcp"
+    cidr_blocks = ["0.0.0.0/0"] 
+  }
+
+  # Inbound rule for HTTPS traffic
+  ingress {
+    from_port   = 443
+    to_port     = 443
+    protocol    = "tcp"
+    cidr_blocks = ["0.0.0.0/0"] 
+  }
+
+ # Outbound rule allowing all traffic
+  egress {
+    from_port   = 0
+    to_port     = 0
+    protocol    = "-1"
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+}
+
+
+resource "aws_launch_configuration" "web_lc" {
+  name_prefix   = "web-lc"
+  image_id      = var.ami
+  instance_type = var.instance_type
+
+  security_groups = [aws_security_group.web_sg.id]
+  key_name = var.keyname
+  user_data = <<-EOF
+              #!/bin/bash
+              apt update
+              apt upgrade -y
+              EOF
+
+  lifecycle {
+    create_before_destroy = true
+  }
+}
+
+resource "aws_autoscaling_group" "web_asg" {
+  name_prefix = "web-asg"
+  min_size     = 2
+  max_size     = 5
+  desired_capacity = 2
+  launch_configuration = aws_launch_configuration.web_lc.name
+
+  // Define your load balancer target group ARNs here
+}
+
+resource "aws_lb" "example_alb" {
+  name               = "web-alb"
+  internal           = false
+  load_balancer_type = "application"
+  subnets            = [aws_subnet.subnet1.id, aws_subnet.subnet2.id] 
+}
+
+resource "aws_lb_listener" "example_listener" {
+  load_balancer_arn = aws_lb.example_alb.arn
+  port              = 80
+  protocol          = "HTTP"
+
+  default_action {
+    type             = "fixed-response"
+    fixed_response {
+      content_type = "/"
+      status_code  = "200"
+    }
+  }
+}
+
+resource "aws_lb_target_group" "web_target_group" {
+  name     = "web-target-group"
+  port     = 80
+  protocol = "HTTP"
+  vpc_id   = aws_vpc.main.id  
+}
+
+resource "aws_autoscaling_attachment" "web_asg_attachment" {
+  autoscaling_group_name = aws_autoscaling_group.web_asg.name
+  alb_target_group_arn   = aws_lb_target_group.web_target_group.arn
+}

terraform.tf

@@ -1 +1,5 @@
-provider "aws" {}
+provider "aws" {
+  region = "us-east-1"
+  profile = "default"
+}
+

terraform.tfvars

@@ -0,0 +1,9 @@
+cidr = "10.0.0.0/16"
+vpc_vpc_name = "web_vpc"
+subnet1_cidr = "10.0.1.0/24"
+subnet2_cidr = "10.0.2.0/24"
+subnet3_cidr = "10.0.3.0/24"
+subnet4_cidr = "10.0.4.0/24"
+ami = "ami-053b0d53c279acc90"
+instance_type = "t2.micro"
+keyname = "test-devops"

vars.tf

@@ -0,0 +1,43 @@
+variable "cidr" {
+  type    = string
+  default = "10.0.0.0/16"
+}
+
+
+variable "vpc_name" {
+  type    = string
+  default = "web_vpc"
+}
+
+variable "subnet1_cidr" {
+  type    = string
+  default = "10.0.1.0/24"
+}
+
+variable "subnet2_cidr" {
+  type    = string
+  default = "10.0.2.0/24"
+}
+
+variable "subnet3_cidr" {
+  type    = string
+  default = "10.0.2.0/24"
+}
+
+variable "subnet4_cidr" {
+  type    = string
+  default = "10.0.2.0/24"
+}
+
+variable "ami" {
+  type = string
+}
+
+variable "instance_type" {
+  type = string
+}
+
+variable "keyname" {
+  type = string
+  
+}