a CloudWatch Composite Alarm based on both CPUUtilization and NetworkIn metrics

composite_alarm.tf

##-----------------------------------------------------------------------------
## creates Composite Cloudwatch Alarm on AWS for monitoring
##-----------------------------------------------------------------------------
resource "awscc_cloudwatch_composite_alarm" "composite_alarm" {
  alarm_name        = "example-composite-alarm"
  alarm_description = "Example of a composite alarm with various actions"

  alarm_actions             = [aws_autoscaling_policy.example_scaling_policy.arn]

  alarm_rule = "ALARM(${aws_cloudwatch_metric_alarm.cpu_gte_80.alarm_name}) OR ALARM(${aws_cloudwatch_metric_alarm.network_in.alarm_name})"
}

resource "aws_autoscaling_policy" "example_scaling_policy" {
  name                   = "example"
  autoscaling_group_name  = aws_autoscaling_group.example.name
  policy_type            = "SimpleScaling"
  scaling_adjustment     = 1
  adjustment_type        = "ChangeInCapacity"
}

resource "aws_cloudwatch_metric_alarm" "cpu_gte_80" {
  alarm_name        = "cpu-gte-80"
  alarm_description = "This metric monitors ec2 cpu utilization"

  comparison_operator = "GreaterThanOrEqualToThreshold"
  evaluation_periods  = 2
  metric_name         = "CPUUtilization"
  namespace           = "AWS/EC2"
  period              = 120
  statistic           = "Average"
  threshold           = 80
}

resource "aws_cloudwatch_metric_alarm" "network_in" {
  # Define the second condition for NetworkIn
  alarm_name        = "network-in-1"
  alarm_description  = "Alarm when NetworkIn exceeds 10,000"
  comparison_operator = "GreaterThanOrEqualToThreshold"
  evaluation_periods  = 2
  namespace           = "AWS/EC2"
  metric_name       = "NetworkIn"
  period            = 60
  statistic           = "SampleCount"
  threshold         = 10000 # Adjust the threshold as needed  
}