This document provides an overview of auto scaling on AWS. It discusses high availability, auto scaling components like launch configurations and auto scaling groups, and demonstrates setting up an auto scaling group with a load balancer and scaling policies to handle increased load and instance failures. A scenario is presented where an initial EC2 instance is load balanced and auto scaling is configured to scale up to 3 instances under load and replace instances if terminated.

1. Introduction to Auto Scaling
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2. Agenda
• High Availbility
• Auto Scaling
• AWS Auto Scaling
• ASG Demo: Auto Scaling + Load Balancing with 1 (+2) EC2

3. High Availability
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Redundancy
– Multiple copies of identical system
●
Monitoring
– Track changes in any resources available
●
Failover
– Ability to switch to backup system during failure
●
Failback
– Ability to switch back to main system after recovery

4. AWS High Availability
●
Compute
– Elastic Load Balancing
– Availability Zones
– Auto Scaling
●
SQL Databases
– Multi A-Z deployment
●
Storage Services
– Cross-region replication
AWS CloudWatch
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5. Auto Scaling

6. AWS Auto Scaling

7. AWS Auto Scaling Components
●
Launch Configuration
– Pre-defined EC2 instance configuration for auto scaling group
●
Auto Scaling Group
– Collections of Amazon EC2 instances that enable automatic
scaling
●
AWS CloudWatch
– Managed monitoring and observability service

8. AWS Auto Scaling

9. ASG Demo
Auto Scaling + Load Balancing with 1 (+2) EC2

10. Scenario
●
Initial 1 EC2 instance serving static web pages (load
balanced)
●
Set autoscaling policy up to 3 instances
●
Simulate load testing on EC2 to scale up to 3 instances
●
Simulate EC2 failures by terminating one instance

11. Create Load Balancer

12. Pick All A-Zs

13. Configure Routing

14. Create Launch Template

16. Specify AMI / Instance Type

17. User Data
https://bit.ly/EC2LoadTesting

18. Creating Auto Scaling Groups

19. Creating Launch Configuration

20. Pick All A-Zs

21. Attach Load Balancer

22. Set Group Size

23. Scaling Policies

24. Initial Condition

26. SNS Notification

27. Terminate All 3 instances

28. 1 new instance provisioned

29. Thanks!!!