This document discusses AWS tools for elasticity and management including Elastic Load Balancing, Auto Scaling, and CloudWatch. It describes how Elastic Load Balancing distributes traffic across EC2 instances and supports health checks. It explains how Auto Scaling automatically scales EC2 capacity based on demand or metrics and uses launch configurations and Auto Scaling groups. It also describes how CloudWatch monitors AWS resources and applications and sets alarms.

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Module 5 AWS Elasticity and
Management Tools

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Triad of Services
Latency
Utilization
CloudWatchAuto Scaling
Elastic Load
Balancing
Auto Scaling group

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Triad of Services
Latency
Utilization
Elastic Load
Balancing
Auto Scaling group
Execute AS Policy
Auto Scaling

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Triad of Services
Latency
Utilization
CloudWatchAuto Scaling
Elastic Load
Balancing
Auto Scaling group

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Elastic Load Balancing
• Distributes traffic across multiple EC2 instances, in
multiple Availability Zones
• Supports health checks to detect unhealthy
Amazon EC2 instances
• Supports the routing and load balancing of HTTP,
HTTPS, SSL, and TCP traffic to Amazon EC2
instances
Elastic Load
Balancing

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Classic Load Balancer – How It Works
Register instances
with your load
balancer.
Availability Zone A Availability Zone B
load balancer
X

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Application Load Balance – How It Works
Target Group /mobile
Register instances as
targets in a target group,
and route traffic to a
target group.
load balancer
Listener ListenerRule Rule Rule
Target Group Target Group /api
Target Target Target Target Target Target Target
Health
Check
Health
Check
Health
Check

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Amazon CloudWatch
• A monitoring service for AWS cloud resources and
the applications you run on AWS
• Visibility into resource utilization, operational
performance, and overall demand patterns
• Custom application-specific metrics of your own
• Accessible via AWS Management Console, APIs, SDK,
or CLI
Amazon
CloudWatch

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Amazon CloudWatch Facts
• Monitor other AWS resources
• View graphics and statistics
• Set Alarms

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Amazon CloudWatch Architecture
AWS resources
that support
CloudWatch
Amazon
CloudWatch
Amazon
CloudWatch
Alarm
SNS Email
Notification
Auto Scaling
Available
Statistics
Statistics
Consumer
AWS Management
Console
CloudWatch Metrics
CPUUtilization
StatusCheckFailed
Custom
Application-
Specific Metrics
PageViewCount

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Auto Scaling
• Scale your Amazon EC2 capacity automatically
• Well-suited for applications that experience
variability in usage
• Available at no additional charge
Auto
Scaling

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Launch Configurations
• A launch configuration is a template that an Auto Scaling
group uses to launch EC2 instances.
• When you create a launch configuration, you can specify:
• AMI ID
• Instance type
• Key pair
• Security groups
• Block device mapping
• User data

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Auto Scaling Groups
• Contain a collection of EC2 instances that share similar
characteristics.
• Instances in an Auto Scaling group are treated as a logical
grouping for the purpose of instance scaling and management.
Auto Scaling group
Minimum size
Desired capacity
Maximum size
Scale out as needed

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Auto Scaling Basic Lifecycle
instances
Auto Scaling
group
Scale Out
Amazon
CloudWatch
Scheduled
Event
Launch
Instance

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Auto Scaling Basic Lifecycle
instances
Auto Scaling
group
Scale Out
Amazon
CloudWatch
Scheduled
Event
Launch
Instance
Attach to Group

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Auto Scaling Basic Lifecycle
instances
Auto Scaling group
Scale In
Amazon
CloudWatch
Scheduled
Event
Detach
from Group

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Auto Scaling Basic Lifecycle
instances
Auto Scaling group
Scale In
Amazon
CloudWatch
Scheduled
Event
Detach
from Group
Terminate
Instance X

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DEMO TIME

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