Terraform Demos

resource "aws_cloudwatch_metric_alarm" "cpu_high" {
  alarm_name          = "${var.app_name}-cpu-high"
  comparison_operator = "GreaterThanThreshold"
  evaluation_periods   = 2
  metric_name          = "CPUUtilization"
  namespace            = "AWS/EC2"
  period               = 300
  statistic            = "Average"
  threshold            = 80
  alarm_actions        = [var.sns_topic_arn]
  dimensions = {
    InstanceId = var.instance_id
  }
}

resource "aws_cloudwatch_dashboard" "main" {
  dashboard_name = "${var.app_name}-dashboard"
  dashboard_body = jsonencode({
    widgets = [
      {
        type   = "metric"
        x      = 0
        y      = 0
        width  = 12
        height = 6
        properties = {
          metrics = [["AWS/EC2", "CPUUtilization", "InstanceId", var.instance_id]]
          period  = 300
          stat    = "Average"
          region  = var.aws_region
          title   = "CPU Utilization"
        }
      }
    ]
  })
}

variable "app_name" {
  type = string
}

variable "aws_region" {
  type    = string
  default = "us-east-1"
}

variable "instance_id" {
  type = string
}

variable "sns_topic_arn" {
  type = string
}