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  • EC2 CPU utilization sustained over 90% for maybe 5 mins and send an email.
  • If expected to be sustained, manually add desired instances to Web Server ASG.
  • RDS CPU utilization sustained over 90% for maybe 30 mins and send an email.
  • If expected to be sustained, plan a time to scale up the RDS instance.
  • Watch Load balancer error rate and web server error rates.
  • Troubleshoot cause. Likely to be solved by more EC2 instances or scaling up the RDS.

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