Learning Objectives: - Learn how to build for high availability on Lightsail - Explore Lightsail's newest features - Block storage and Load Balancing - See Lightsail in action with live demos

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Emily Kruger, Sr Product Manager
Gabriel Gosselin, Web Development Engineer
February 2018
Building High Availability Apps on
Amazon Lightsail

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Amazon Lightsail: Cloud made easy
• Bundled compute, storage, networking
• Fully configured servers
• Low, predictable price
• Intuitive, global Lightsail console
• Easy growth path
• Access to AWS services
• Tailored API & CLI

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Plans offer bundled resources for simple monthly price

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Lightsail launches in 2017
10
global regions
8
languages
Windows
Server
Additional
block storage
Load
Balancers

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High Availability (HA): characteristic of systems that
are durable and likely to operate continuously without
failure for a long time

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Fault tolerance
The ability for a system to remain in
operation even if some of the
components used to build the
system fail
Good news – most higher-level AWS
services are built with fault tolerance
in mind
Fault tolerance versus redundancy
Redundancy
A system design in which a
component is duplicated so if it fails
there will be a backup
Depends on how your architect your
application – it’s on you!

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Major building blocks for HA architectures
• Availability Zones (AZ)
• Load Balancers
• Static IPs
• Replication and backups

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Build for High Availability on Lightsail
Start
simple
• Single Instance
• Static IP
• Block Storage
• Snapshots
Add Load
Balancer
• 2+ Instances
• Cross-AZ
Connect AWS
services
• Managed DB
(RDS)
• Object storage
(S3)

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Lightsail Block storage
• Highly available
• Low-latency performance
• Scalable
• Secure
Attached Disk
25 GB
Attached Disk
50 GB
Lightsail Instance
System Disk
30 GB

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Lightsail Load Balancers
• Easy to use
• Scalable
• Highly available
• Automated health checks
• Integrated certificate support

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Availability Zone B
How Lightsail load balancing works
Availability Zone A
HTTPS Traffic
HTTP Traffic
Lightsail
Instance
2
Lightsail
Instance
1
Lightsail
Instance
3
Lightsail
Load Balancer
Lightsail
Instance
(Unhealthy)

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Connecting AWS Services
• Access to many of 100+ AWS Services
• Enable VPC peering in Lightsail
• Create and manage AWS resources through AWS console
• Connect to Lightsail-based apps using peering or public network

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What AWS services can you connect to Lightsail?
✓ Managed databases (RDS)
✓ Compute instance (EC2)
✓ Containers (ECS)
✓ Data warehouse (Amazon Redshift)
✓ Big data—Hadoop (EMR)
✓ In memory data store/cache (ElastiCache)
✓ Object storage (Amazon S3)
✓ CDN (CloudFront)
✓ AWS Database (DynamoDB)
✓ Serverless compute (Lambda)
✓ Email service (SES)
✓ Message queuing (SQS)
Connect from AWS accountConnect with VPC peering
✓ Managed databases (RDS)
✓ Compute instance (EC2)
✓ Containers (ECS)
✓ Data warehouse (Amazon Redshift)
✓ Big data—Hadoop (EMR)
✓ In memory data store/cache (ElastiCache)
✓ Object storage (Amazon S3)
✓ CDN (CloudFront)
✓ AWS Database (DynamoDB)
✓ Serverless compute (Lambda)
✓ Email service (SES)
✓ Message queuing (SQS)

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High(er) Availability architecture – single instance
Availability Zone B
Lightsail
Instance
Block
Storage
Availability Zone A
Lightsail
Instance
Block
Storage
Static IP
Traffic
Snapshot
Recreate instance from snapshot

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Highly Available architecture – multi-tier
Availability Zone A
Lightsail
Load Balancer
Traffic
Database
(Amazon
RDS)
Lightsail
instances
Availability Zone B
Lightsail
instances
Connected via VPC Peering
Object
storage
(S3)
Database
(Amazon
RDS)
As a Multi-AZ deployment

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Demo: Build your HA application

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Thank you!