High Availability Architecture with AWS CLIv2

Prerequisite:

• Created an AWS account.
• Install AWS cliv2 in OS.
• Configure AWS cliv2 with IAM user.

Problem Statement:

• 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 the Content Delivery Network using CloudFront and using the origin domain as an S3 bucket.
• Finally, place the Cloud Front URL on the web app code for security and low latency.

Step-1) Install AWS CLI and configure it.

• Here I am installing awscliv2 on Redhat Linux.
• Follow the given link to install it.
• After installing it confirms it.

aws --version

AWS CLI Installed

• Now we need to configure AWS CLI.

aws configure

• Now you need to type your access and secret key of IAM user.
• After type region name.

Step-2)Create a key pair

• Type the following command:

aws ec2 create-key-pair --key-name KEY_NAME > OUTPUT.pem

• Here I am using (>) for saving our key, it need if anyone wants to login in this instance.

Output:

key

Step-3)Create a security group

• Type the following command:

aws ec2 create-security-group --group-name GROUP_NAME --description "DESCRIPTION" > OUTPUT.TXT

• Here I am again saving my output while creating a security group because at the time of launching ec2-instance we need the id of this security group.

Output:

Security group

Step-4)Launch an instance using the above created key pair and security group.

• Type the following command:

aws ec2 run-instances --image-id ami-0e306788ff2473ccb --instance-type t2.micro --count 1 --subnet-id subnet-1105675d --security-group-ids sg-040c982abe9bb3d48 --key-name key2 > ec2inf.txt

• Now use ami-id which you want, and use security groups id which we have already saved the output.

Output

ec2 launced

Step-5)Create an EBS volume of 1 GB.

• Type the following command:

aws ec2 create-volume  --volume-type TYPE--size 1 --availability-zone ZONE_YOU_WANT > OUPTUT.TXT

• Here I am again saving my output while creating a volume because at the time of attaching volume into ec2-instance we need the id of volume.

Output

Step-6)Attach the above created EBS volume to the instance you created in the previous steps.

• Type the following command:

aws ec2 attach-volume  --instance-id YOUR_INSTANCE_ID --volume-id VOL_ID --device /dev/sdf

• Now use id which we already saved in the output file at the time of creating volume

Output

EBS Attached

Step-7)Create partition , format it and mount on /var/www/html

• Now log in to your EC2-instance.
• Type the following commands:

fdisk -l

EBS attached

• Here we can see our EBS has been attached.

fdisk /dev/xvdf

• Creating partition.

making partition + formatting

mkfs.ext4 /dev/xvdf

• Here I am formatting the partition type ext4.

mount /dev/xvdf /varw/www/html

• After formatting, we need to mount on /var/www/html for making our web code persistent

Output:

mounted on /var/www/html

Step-7)Create an S3 bucket for static content

• Type the following command for creating an S3 bucket.

aws s3 mb s3://bucketname

Output:

S3 bucket created

Step-8) Upload content in the S3 bucket

• Type the following command for creating an S3 bucket.

aws s3 cp . s3://BUCKET_NAME --recursive --acl public-read

Step-9) Setting up Content Delivery Network using CloudFront and using the origin domain as an S3 bucket.

• Type the following command for creating an S3 bucket.

aws cloudfront create-distribution --origin-domain-name BUCKET_NAME.s3.amazonaws.com

• Here you need to type your bucket name in the — origin-domain-name .

Output

Cloudfront

Domain Name Cloudfront

Step-10) Place the Cloud Front URL on the web app code for security and low latency.

• Now we need to use the domain name provided by CloudFront.

Web Code

• Now Type Domain name in the img tag.

Final Output of Website

• As you can see the data is coming from S3 using Cloudfront.

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