AWS Cloud TutorialLesson 12Free preview

AWS EC2 Auto Scaling

This lesson is part of AWS · All levels

Summary

Amazon EC2 Scaling keeps the number of instances up to the configuration you set, automatically adds up when traffic goes up and reduces downtime. The Scaling Group keeps the minimum, maximum, and number of instances desired settings and its scale policy. With the health check, the unhealthy instance is immediately replaced to keep the service stable.

Key points

Scaling Group sets min, max, and desired capacity
Scaling policy adds or subtracts instances based on metrics
Instance that failed to pass the health check automatically replaced
Capacity decreases when it's quiet so it's more cost effective

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