mr-vercetti/tf-aws-demo
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Add dynamic resources naming and tfvars example

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This commit is contained in:
mr-vercetti 2022-08-26 15:16:02 +02:00
parent ffdb539b4d
commit 86fa35e0a5
11 changed files with 59 additions and 47 deletions
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12
modules/alb/main.tf
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@ -1,5 +1,5 @@
resource "aws_security_group" "this" {
name = "demo-app-alb-sg"
name = "${var.PROJECT_NAME}-alb-sg"
vpc_id = var.VPC_ID
@ -20,20 +20,16 @@ resource "aws_security_group" "this" {
}
resource "aws_lb" "this" {
name = "demo-app-alb"
name = "${var.PROJECT_NAME}-alb"
internal = false
load_balancer_type = "application"
security_groups = [aws_security_group.this.id]
subnets = var.ALB_SUBNETS_IDS
tags = {
Project = var.PROJECT_TAG
}
}
resource "aws_lb_target_group" "this" {
name = "demo-app-alb-tg"
name = "${var.PROJECT_NAME}-alb-tg"
port = 80
protocol = "HTTP"
vpc_id = var.VPC_ID

4
modules/alb/variables.tf
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@ -1,8 +1,8 @@
variable "VPC_ID" {
variable "PROJECT_NAME" {
type = string
}
variable "PROJECT_TAG" {
variable "VPC_ID" {
type = string
}

12
modules/app/main.tf
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@ -1,5 +1,5 @@
resource "aws_security_group" "this" {
name = "demo-app-autoscaling-group-sg"
name = "${var.PROJECT_NAME}-autoscaling-group-sg"
vpc_id = var.VPC_ID
@ -40,7 +40,7 @@ data "template_file" "bootstrap" {
}
resource "aws_launch_configuration" "this" {
name = "demo-app-launch-configuration"
name = "${var.PROJECT_NAME}-launch-configuration"
image_id = var.EC2_AMI
instance_type = var.EC2_TYPE
@ -55,7 +55,7 @@ resource "aws_launch_configuration" "this" {
}
resource "aws_autoscaling_group" "this" {
name = "demo-app-autoscaling-group"
name = "${var.PROJECT_NAME}-autoscaling-group"
min_size = var.ASG_MIN_SIZE
max_size = var.ASG_MAX_SIZE
@ -68,14 +68,14 @@ resource "aws_autoscaling_group" "this" {
tag {
key = "Name"
value = "demo-app-instance"
value = "${var.PROJECT_NAME}-instance"
propagate_at_launch = true
}
}
# asg scale up policy
resource "aws_autoscaling_policy" "cpu-policy" {
name = "demo-app-cpu-policy"
name = "${var.PROJECT_NAME}-cpu-policy"
autoscaling_group_name = aws_autoscaling_group.this.name
adjustment_type = "ChangeInCapacity"
@ -105,7 +105,7 @@ resource "aws_cloudwatch_metric_alarm" "cpu-alarm" {
# asg scale down policy
resource "aws_autoscaling_policy" "cpu-policy-scaledown" {
name = "demo-app-cpu-policy-scaledown"
name = "${var.PROJECT_NAME}-cpu-policy-scaledown"
autoscaling_group_name = aws_autoscaling_group.this.name
adjustment_type = "ChangeInCapacity"

0
modules/app/outputs.tf
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4
modules/app/variables.tf
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@ -1,3 +1,7 @@
variable "PROJECT_NAME" {
type = string
}
# VPC
variable "VPC_ID" {
type = string

10
modules/bastion_host/main.tf
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@ -1,5 +1,5 @@
resource "aws_security_group" "this" {
name = "bastion-host-sg"
name = "${var.PROJECT_NAME}-bastion-host-sg"
vpc_id = var.VPC_ID
@ -20,18 +20,18 @@ resource "aws_security_group" "this" {
}
resource "aws_network_interface" "this" {
subnet_id = var.SUBNET_ID
subnet_id = var.SUBNET_ID
security_groups = [aws_security_group.this.id]
tags = {
Name = "bastion-host-nic"
Name = "${var.PROJECT_NAME}-bastion-host-nic"
}
}
resource "aws_instance" "this" {
ami = var.EC2_AMI
instance_type = var.EC2_TYPE
key_name = var.EC2_KEY_NAME
key_name = var.EC2_KEY_NAME
network_interface {
network_interface_id = aws_network_interface.this.id
@ -39,6 +39,6 @@ resource "aws_instance" "this" {
}
tags = {
Name = var.EC2_INSTANCE_NAME
Name = "${var.PROJECT_NAME}-bastion-host"
}
}

4
modules/bastion_host/outputs.tf
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@ -1,7 +1,3 @@
output "bastion_host_name" {
value = aws_instance.this.id
}
output "bastion_host_private_ip" {
value = aws_instance.this.private_ip
}

10
modules/bastion_host/variables.tf
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@ -1,3 +1,7 @@
variable "PROJECT_NAME" {
type = string
}
variable "VPC_ID" {
type = string
}
@ -11,14 +15,10 @@ variable "EC2_AMI" {
}
variable "EC2_TYPE" {
type = string
type = string
default = "t2.micro"
}
variable "EC2_INSTANCE_NAME" {
type = string
}
variable "EC2_KEY_NAME" {
type = string
}

20
prod/main.tf
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@ -8,7 +8,7 @@ module "vpc" {
source = "terraform-aws-modules/vpc/aws"
version = "3.14.2"
name = var.DEMO_VPC_NAME
name = "${var.PROJECT_NAME}-vpc"
cidr = var.DEMO_VPC_CIDR
azs = var.DEMO_VPC_AVAILABILITY_ZONES
@ -21,7 +21,6 @@ module "vpc" {
tags = {
Terraform = "true"
Project = var.PROJECT_TAG
}
}
@ -30,7 +29,7 @@ module "vpc_data" {
source = "../modules/vpc_data"
depends_on = [module.vpc]
VPC_NAME = var.DEMO_VPC_NAME
VPC_NAME = "${var.PROJECT_NAME}-vpc"
BASTION_HOST_AZ = var.DEMO_BASTION_HOST_AZ
}
@ -43,21 +42,24 @@ module "ami_data" {
module "bastion_host" {
source = "../modules/bastion_host"
PROJECT_NAME = var.PROJECT_NAME
VPC_ID = module.vpc_data.vpc.id
SUBNET_ID = module.vpc_data.bastion_host_subnet.id
EC2_AMI = module.ami_data.amazon_linux.id
EC2_TYPE = var.DEMO_BASTION_HOST_TYPE
EC2_INSTANCE_NAME = var.DEMO_BASTION_HOST_NAME
EC2_KEY_NAME = var.DEMO_BASTION_HOST_KEY_NAME
EC2_AMI = module.ami_data.amazon_linux.id
EC2_TYPE = var.DEMO_BASTION_HOST_TYPE
EC2_KEY_NAME = var.DEMO_BASTION_HOST_KEY_NAME
}
# Create ALB
module "alb" {
source = "../modules/alb"
PROJECT_NAME = var.PROJECT_NAME
VPC_ID = module.vpc_data.vpc.id
PROJECT_TAG = var.PROJECT_TAG
ALB_SUBNETS_IDS = module.vpc_data.public_subnets.ids
}
@ -65,6 +67,8 @@ module "alb" {
module "app" {
source = "../modules/app"
PROJECT_NAME = var.PROJECT_NAME
VPC_ID = module.vpc_data.vpc.id
VPC_SUBNETS_IDS = module.vpc_data.private_subnets.ids

20
prod/terraform.tfvars.example Executable file
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@ -0,0 +1,20 @@
# general
REGION = "eu-west-3"
PROJECT_NAME = "demo"
# vpc
DEMO_VPC_CIDR = "10.0.0.0/24"
DEMO_VPC_AVAILABILITY_ZONES = ["eu-west-3a", "eu-west-3b"]
DEMO_VPC_PRIVATE_SUBNETS_CIDRS = ["10.0.0.0/28", "10.0.0.16/28"]
DEMO_VPC_PUBLIC_SUBNETS_CIDRS = ["10.0.0.32/28", "10.0.0.48/28"]
# bastion host
DEMO_BASTION_HOST_TYPE = "t2.micro"
DEMO_BASTION_HOST_KEY_NAME = "aws-key"
DEMO_BASTION_HOST_AZ = "eu-west-3a"
# demo app
DEMO_APP_EC2_TYPE = "t2.micro"
DEMO_APP_EC2_KEY_NAME = "aws-key"
DEMO_APP_ASG_MIN_SIZE = 2
DEMO_APP_ASG_MAX_SIZE = 5

10
prod/variables.tf
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@ -4,15 +4,11 @@ variable "REGION" {
default = "eu-west-3"
}
variable "PROJECT_TAG" {
variable "PROJECT_NAME" {
type = string
}
# vpc
variable "DEMO_VPC_NAME" {
type = string
}
variable "DEMO_VPC_CIDR" {
type = string
default = "10.0.0.0/24"
@ -36,10 +32,6 @@ variable "DEMO_BASTION_HOST_TYPE" {
default = "t2.micro"
}
variable "DEMO_BASTION_HOST_NAME" {
type = string
}
variable "DEMO_BASTION_HOST_KEY_NAME" {
type = string
}