Merge pull request easyawslearn#32 from easyawslearn/IAM

added aws auto scaling example

Author: easyawslearn

terraform-aws-autoscaling/main.tf

@@ -0,0 +1,72 @@
+provider "aws" {
+ region = var.region
+}
+
+resource "aws_launch_configuration" "launch_config" {
+ name = "web_config"
+ image_id = lookup(var.ami_id, var.region)
+ instance_type = "t2.micro"
+ key_name = var.key_name
+ security_groups = [ var.security_grpup_id]
+}
+
+resource "aws_autoscaling_group" "example_autoscaling" {
+ name = "autoscaling-terraform-test"
+ max_size = 2
+ min_size = 1
+ health_check_grace_period = 300
+ health_check_type = "EC2"
+ desired_capacity = 1
+ force_delete = true
+ launch_configuration = aws_launch_configuration.launch_config.name
+ availability_zones = ["us-east-1a","us-east-1b"]
+ # vpc_zone_identifier = [aws_subnet.example1.id, aws_subnet.example2.id]
+
+}
+
+resource "aws_autoscaling_policy" "asp" {
+ name = "asp-terraform-test"
+ scaling_adjustment = 1
+ adjustment_type = "ChangeInCapacity"
+ cooldown = 300
+ policy_type = "SimpleScaling"
+ autoscaling_group_name = aws_autoscaling_group.example_autoscaling.name
+}
+
+resource "aws_cloudwatch_metric_alarm" "aws_cloudwatch_metric_alarm" {
+ alarm_name = "terraform-test-cloudwatch"
+ comparison_operator = "GreaterThanOrEqualToThreshold"
+ evaluation_periods = "2"
+ metric_name = "CPUUtilization"
+ namespace = "AWS/EC2"
+ period = "120"
+ statistic = "Average"
+ threshold = "30"
+ alarm_description = "This metric monitors ec2 cpu utilization"
+ 
+ dimensions = {
+ AutoScalingGroupName = aws_autoscaling_group.example_autoscaling.name
+ }
+ 
+ actions_enabled = true
+ alarm_actions = [aws_autoscaling_policy.asp.arn]
+
+}
+
+resource "aws_sns_topic" "user_updates" {
+ name = "user-updates-topic"
+ display_name = "example auto scaling"
+}
+
+resource "aws_autoscaling_notification" "example_notifications" {
+ group_names = [aws_autoscaling_group.example_autoscaling.name]
+
+ notifications = [
+ "autoscaling:EC2_INSTANCE_LAUNCH",
+ "autoscaling:EC2_INSTANCE_TERMINATE",
+ "autoscaling:EC2_INSTANCE_LAUNCH_ERROR",
+ "autoscaling:EC2_INSTANCE_TERMINATE_ERROR",
+ ]
+
+ topic_arn = aws_sns_topic.user_updates.arn
+}

terraform-aws-autoscaling/variables.tf

@@ -0,0 +1,37 @@
+variable "region" {
+ default = "us-east-1"
+}
+
+variable "ami_id" {
+ type = "map"
+ default = {
+ us-east-1 = "ami-04d29b6f966df1537"
+ eu-west-2 = "ami-132b3c7efe6sdfdsfd"
+ eu-central-1 = "ami-9787h5h6nsn75gd33"
+ }
+}
+
+variable "key_name" {
+ type = "string"
+ default = "ec2-demo"
+}
+
+variable "instance_type" {
+ type = "string"
+ default = "t2.micro"
+}
+
+variable "subnets" {
+ type = list(string)
+ default = ["subnet-59b98303","subnet-0d7cb232"]
+}
+
+variable "azs" {
+ type = list(string)
+ default = ["us-east-1a","us-east-1b"]
+}
+
+variable "security_grpup_id" {
+ type = "string"
+ default = "sg-53623a20"
+}

terraform-aws-iam/iam_role_with_instance/variables.tf

@@ -16,6 +16,7 @@ variable "key_name" {
  default = "ec2-demo"
 }
 
+
 variable "instance_type" {
  type = "string"
  default = "t2.micro"