RDS metrics

Monitoring metrics

Monitoring plan

What are your monitoring goals?
Which resources will you monitor?
How often will you monitor these resources?
Which monitoring tools will you use?
Who will perform the monitoring tasks?
Whom should be notified when something goes wrong?

Performance baseline(take RDS as an example)

To achieve your monitoring goals, you need to establish a baseline. To do this, measure performance under different load conditions at various times in your Amazon RDS environment.

Network throughput
Client connections
I/O for read, write, or metadata operations
Burst credit balances for your DB instances

Performance guidelines

High CPU or RAM consumption 
Disk space consumption
Network traffic 
Database connections 
IOPS metrics

Alarm

refer

provider "aws" {
  region = "your_aws_region"
}

resource "aws_cloudwatch_metric_alarm" "cpu_alarm" {
  alarm_name          = "CPUUtilizationAlarm"
  comparison_operator = "GreaterThanOrEqualToThreshold"
  evaluation_periods  = 2
  metric_name         = "CPUUtilization"
  namespace           = "AWS/EC2"
  period              = 300  # 5 minutes
  statistic           = "Average"
  threshold           = 80   # Set your threshold value

  dimensions = {
    InstanceId = "your_instance_id"
  }

  alarm_description = "Alarm when CPU utilization is greater than or equal to 80%"

  actions_enabled = true

  alarm_actions = ["arn:aws:sns:your_aws_region:your_account_id:your_sns_topic_arn"]

  ok_actions = ["arn:aws:sns:your_aws_region:your_account_id:your_sns_topic_arn"]
}

Demo

refer