High Availability Architecture with AWS CLI

4 min readMar 21, 2021

🔅 The architecture includes-
- Webserver configured on EC2 Instance
- Document Root(/var/www/html) made persistent by mounting on EBS Block Device.
- Static objects used in code such as pictures stored in S3
- Setting up Content Delivery Network using CloudFront and using the origin domain as S3 bucket.
- Finally place the Cloud Front URL on the webapp code for security and low latency.

Step 1- Webserver configured on EC2 Instance

Create a key pair

Command- aws ec2 create-key-pair — key-name <key_name>

Create security group

Command: aws ec2 create-security-group — group-name <sg_name> — description <description_sg>

Create EC2 instance

Command: aws ec2 run-instances — image-id <imageid> — instance-type <instance-type> — key-name <key-name> — count <number of count> — security-group-ids <sg_id> — subnet-id <subnet_id>

Configure web server on EC2 instance and to start the service.

Step 2- Document Root(/var/www/html) made persistent by mounting on EBS Block Device.

Create EBS volume

Attach EBS volume to EC2 instance

To check EBS volume is attached successfully or not

Mount EBS volume

Step3- Static objects used in code such as pictures stored in S3

Create a bucket

Upload object to bucket

Make object and bucket public

Now go to browser and search with Object URL, you will see your object because you make this object public :

STEP 4 - Setting up Content Delivery Network using CloudFront service and using the origin domain as S3 bucket.

Create the cloudfront distribution using the domain name as S3 bucket :

Now go to browser and search with domain name(d3ggjevc1qn8gy.cloudfront.net/object_name) provided by the cloudfront distribution, you will see that you will be automatically landed to the object URL with low latency :