Step-by-Step Guide: Setting up AWS ALB using AWS CLI

AWS ALB Setup

Prerequisite

If you don’t have one, create a default vpc

aws ec2 create-default-vpc

1	aws ec2 create-default-vpc

Get the aws cli if you don’t already have it

https://docs.aws.amazon.com/cli/latest/userguide/install-cliv2.html

Configure your aws cli

https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-quickstart.html

Test to make sure you have version 2 of the aws cli installed

aws elbv2 help

1	aws elbv2 help

Get the AMI id of the free tier-eligible AMI

List your VPCs

aws ec2 describe-vpcs

1	aws ec2 describe-vpcs

Create an environment variable for your VPC

export VPC=<default_vpc_id>

1	export VPC=<default_vpc_id>

Use a key pair from your existing key pairs

MyALBKeyPair.pem

Create Resources

Create your security group

aws ec2 create-security-group --group-name MyALBSecurityGroup --description "My ALB security group"

1	aws ec2 create-security-group --group-name MyALBSecurityGroup --description "My ALB security group"

Set environment variable for your security group

export SGID=<security_group_id>

1	export SGID=<security_group_id>

Get your local IP Address

curl https://checkip.amazonaws.com

1	curl https://checkip.amazonaws.com

Set an environment variable for your IP address

export IPADD=<your_ip_address>

1	export IPADD=<your_ip_address>

Add ssh and HTTP rules to your inbound rules

aws ec2 authorize-security-group-ingress --group-id $SGID --protocol tcp --port 22 --cidr $IPADD/32<br>aws ec2 authorize-security-group-ingress --group-id $SGID --protocol tcp --port 80 --cidr 0.0.0.0/0

1	aws ec2 authorize-security-group-ingress --group-id $SGID --protocol tcp --port 22 --cidr $IPADD/32<br>aws ec2 authorize-security-group-ingress --group-id $SGID --protocol tcp --port 80 --cidr 0.0.0.0/0

Create your subnets

aws ec2 create-subnet --vpc-id $VPC --availability-zone-id use1-az1 --cidr-block 172.31.128.0/20<br>aws ec2 create-subnet --vpc-id $VPC --availability-zone-id use1-az2 --cidr-block 172.31.192.0/20

1	aws ec2 create-subnet --vpc-id $VPC --availability-zone-id use1-az1 --cidr-block 172.31.128.0/20<br>aws ec2 create-subnet --vpc-id $VPC --availability-zone-id use1-az2 --cidr-block 172.31.192.0/20

Create environment variables for your subnets

export AZ1SUB=<az1_subnet_id>
export AZ2SUB=s<az2_subnet_id>

1 2	export AZ1SUB=<az1_subnet_id> export AZ2SUB=s<az2_subnet_id>

Create your EC2 instances using the AMI id of ami-03c7d01cf4dedc891 (the free tier eligible AMI), two in each subnet; one for the video server and the other for the web server.

userdata-video-server-1.txt

#!/bin/bash
sudo su
yum install httpd -y
cd /var/www/html
mkdir vid
echo "<html><body><h1><span style="color:#6D8764">Hello from EC2 video server instance #1</span></h1><p>This server acts as an Apache httpd server for video content</p></body></html>" > /var/www/html/vid/index.html
echo "<html><body><h1><span style="color:#6D8764">Serving video data from EC2 application instance #1</span></h1><p>This server acts as an Apache httpd server for video content</p></body></html>" > /var/www/html/vid/video.html
service httpd start

#!/bin/bash

sudo su

yum install httpd -y

cd /var/www/html

mkdir vid

echo "<html><body><h1><span style="color:#6D8764">Hello from EC2 video server instance #1</span></h1><p>This server acts as an Apache httpd server for video content</p></body></html>" > /var/www/html/vid/index.html

echo "<html><body><h1><span style="color:#6D8764">Serving video data from EC2 application instance #1</span></h1><p>This server acts as an Apache httpd server for video content</p></body></html>" > /var/www/html/vid/video.html

service httpd start

aws ec2 run-instances --image-id ami-03c7d01cf4dedc891 \<br>--instance-type t2.micro --count 1 --subnet-id $AZ1SUB \<br>--key-name MyALBKeyPair20230426 --security-group-ids $SGID \<br>--associate-public-ip-address --user-data file://userdata-video-server-1.txt

1	aws ec2 run-instances --image-id ami-03c7d01cf4dedc891 \<br>--instance-type t2.micro --count 1 --subnet-id $AZ1SUB \<br>--key-name MyALBKeyPair20230426 --security-group-ids $SGID \<br>--associate-public-ip-address --user-data file://userdata-video-server-1.txt

userdata-video-server-2.txt

#!/bin/bash
sudo su
yum install httpd -y
cd /var/www/html
mkdir vid
echo "<html><body><h1><span style="color:#E51400">Hello from EC2 video server instance #2</span></h1><p>This server acts as an Apache httpd server for video content</p></body></html>" > /var/www/html/vid/index.html
echo "<html><body><h1><span style="color:#E51400">Serving application data from EC2 application instance #2</span></h1><p>This server acts as an Apache httpd server for video content</p></body></html>" > /var/www/html/vid/video.html
service httpd start

#!/bin/bash

sudo su

yum install httpd -y

cd /var/www/html

mkdir vid

echo "<html><body><h1><span style="color:#E51400">Hello from EC2 video server instance #2</span></h1><p>This server acts as an Apache httpd server for video content</p></body></html>" > /var/www/html/vid/index.html

echo "<html><body><h1><span style="color:#E51400">Serving application data from EC2 application instance #2</span></h1><p>This server acts as an Apache httpd server for video content</p></body></html>" > /var/www/html/vid/video.html

service httpd start

aws ec2 run-instances --image-id ami-03c7d01cf4dedc891 \<br>--instance-type t2.micro --count 1 --subnet-id $AZ2SUB \<br>--key-name MyALBKeyPair20230426 --security-group-ids $SGID \<br>--associate-public-ip-address --user-data file://userdata-video-server-2.txt

1	aws ec2 run-instances --image-id ami-03c7d01cf4dedc891 \<br>--instance-type t2.micro --count 1 --subnet-id $AZ2SUB \<br>--key-name MyALBKeyPair20230426 --security-group-ids $SGID \<br>--associate-public-ip-address --user-data file://userdata-video-server-2.txt

userdata-web-server-1.txt

#!/bin/bash
sudo su
yum install httpd -y
echo "<html><body><h1><span style="color:#FFB570">Hello from EC2 web instance #1</span></h1><p>This server acts as an Apache nginx server</p></body></html>" > /var/www/html/index.html
echo "<html><body><h1><span style="color:#FFB570">Serving web interactions from EC2 web instance #1</span></h1><p>This server acts as an Apache nginx server</p></body></html>" > /var/www/html/application.html
service httpd start

#!/bin/bash

sudo su

yum install httpd -y

echo "<html><body><h1><span style="color:#FFB570">Hello from EC2 web instance #1</span></h1><p>This server acts as an Apache nginx server</p></body></html>" > /var/www/html/index.html

echo "<html><body><h1><span style="color:#FFB570">Serving web interactions from EC2 web instance #1</span></h1><p>This server acts as an Apache nginx server</p></body></html>" > /var/www/html/application.html

service httpd start

aws ec2 run-instances --image-id ami-03c7d01cf4dedc891 \<br>--instance-type t2.micro --count 1 --subnet-id $AZ1SUB \<br>--key-name MyALBKeyPair20230426 --security-group-ids $SGID \<br>--associate-public-ip-address --user-data file://userdata-web-server-1.txt

1	aws ec2 run-instances --image-id ami-03c7d01cf4dedc891 \<br>--instance-type t2.micro --count 1 --subnet-id $AZ1SUB \<br>--key-name MyALBKeyPair20230426 --security-group-ids $SGID \<br>--associate-public-ip-address --user-data file://userdata-web-server-1.txt

userdata-web-server-2.txt

!/bin/bash

sudo su
yum install httpd -y
echo “

Hello from EC2 web instance #2

This server acts as an Apache nginx server” > /var/www/html/index.html
echo “

Serving web interactions from EC2 web instance #2

#!/bin/bash
sudo su
yum install httpd -y
echo "<html><body><h1><span style="color:#3333FF">Hello from EC2 web instance #2</span></h1><p>This server acts as an Apache nginx server</p></body></html>" > /var/www/html/index.html
echo "<html><body><h1><span style="color:#3333FF">Serving web interactions from EC2 web instance #2</span></h1><p>This server acts as an Apache nginx server</p></body></html>" > /var/www/html/application.html
service httpd start

#!/bin/bash

sudo su

yum install httpd -y

echo "<html><body><h1><span style="color:#3333FF">Hello from EC2 web instance #2</span></h1><p>This server acts as an Apache nginx server</p></body></html>" > /var/www/html/index.html

echo "<html><body><h1><span style="color:#3333FF">Serving web interactions from EC2 web instance #2</span></h1><p>This server acts as an Apache nginx server</p></body></html>" > /var/www/html/application.html

service httpd start

aws ec2 run-instances --image-id ami-03c7d01cf4dedc891 \<br>--instance-type t2.micro --count 1 --subnet-id $AZ2SUB \<br>--key-name MyALBKeyPair20230426 --security-group-ids $SGID \<br>--associate-public-ip-address --user-data file://userdata-web-server-2.txt

1	aws ec2 run-instances --image-id ami-03c7d01cf4dedc891 \<br>--instance-type t2.micro --count 1 --subnet-id $AZ2SUB \<br>--key-name MyALBKeyPair20230426 --security-group-ids $SGID \<br>--associate-public-ip-address --user-data file://userdata-web-server-2.txt

Create environment variables for your EC2 instances

export VIDSERV1=<video_server_instance_id_1>
export VIDSERV2=<video_server_instance_id_2>
export WEBSERV1=<web_server_instance_id_1>
export WEBSERV2=<web_server_instance_id_2>

export VIDSERV1=<video_server_instance_id_1>

export VIDSERV2=<video_server_instance_id_2>

export WEBSERV1=<web_server_instance_id_1>

export WEBSERV2=<web_server_instance_id_2>

Tag your instances with names

aws ec2 create-tags --resources $VIDSERV1 --tags Key="Name",Value="Video Server #1"<br>aws ec2 create-tags --resources $VIDSERV2 --tags Key="Name",Value="Video Server #2"<br>aws ec2 create-tags --resources $WEBSERV1 --tags Key="Name",Value="Web Server #1"<br>aws ec2 create-tags --resources $WEBSERV2 --tags Key="Name",Value="Web Server #2"

aws ec2 create-tags --resources $VIDSERV1 --tags Key="Name",Value="Video Server #1"<br>aws ec2 create-tags --resources $VIDSERV2 --tags Key="Name",Value="Video Server #2"<br>aws ec2 create-tags --resources $WEBSERV1 --tags Key="Name",Value="Web Server #1"<br>aws ec2 create-tags --resources $WEBSERV2 --tags Key="Name",Value="Web Server #2"

Create your Video Load Balancer

aws elbv2 create-load-balancer --name MyALB --subnets $AZ1SUB $AZ2SUB --security-groups $SGID

1	aws elbv2 create-load-balancer --name MyALB --subnets $AZ1SUB $AZ2SUB --security-groups $SGID

Create environment variables for your ALB ARN and DNS name

export ALBARN=arn:aws:elasticloadbalancing:us-east-1:############:loadbalancer/app/MyALB/a6f121e8d8e04021<br>export ALBDNS=MyALB-949638453.us-east-1.elb.amazonaws.com

1	export ALBARN=arn:aws:elasticloadbalancing:us-east-1:############:loadbalancer/app/MyALB/a6f121e8d8e04021<br>export ALBDNS=MyALB-949638453.us-east-1.elb.amazonaws.com

Create your Target Groups

aws elbv2 create-target-group --name VideoTargets --protocol HTTP --port 80 --vpc-id $VPC<br>aws elbv2 create-target-group --name WebTargets --protocol HTTP --port 80 --vpc-id $VPC

1	aws elbv2 create-target-group --name VideoTargets --protocol HTTP --port 80 --vpc-id $VPC<br>aws elbv2 create-target-group --name WebTargets --protocol HTTP --port 80 --vpc-id $VPC

Create environment variables for your target group ARNs

export VIDTGARN=arn:aws:elasticloadbalancing:us-east-1:############:targetgroup/VideoTargets/ecf67383b371d68e<br>export WEBTGARN=arn:aws:elasticloadbalancing:us-east-1:############:targetgroup/WebTargets/c62e5325012e7d51

1	export VIDTGARN=arn:aws:elasticloadbalancing:us-east-1:############:targetgroup/VideoTargets/ecf67383b371d68e<br>export WEBTGARN=arn:aws:elasticloadbalancing:us-east-1:############:targetgroup/WebTargets/c62e5325012e7d51

Register your EC2 instances with your Target Groups

aws elbv2 register-targets --target-group-arn $VIDTGARN --targets Id=$VIDSERV1 Id=$VIDSERV2<br>aws elbv2 register-targets --target-group-arn $WEBTGARN --targets Id=$WEBSERV1 Id=$WEBSERV2

1	aws elbv2 register-targets --target-group-arn $VIDTGARN --targets Id=$VIDSERV1 Id=$VIDSERV2<br>aws elbv2 register-targets --target-group-arn $WEBTGARN --targets Id=$WEBSERV1 Id=$WEBSERV2

Create a listener for your ALB and give it a default Target Group of the web target group

aws elbv2 create-listener --load-balancer-arn $ALBARN --protocol HTTP \<br>--port 80 --default-actions Type=forward,TargetGroupArn=$WEBTGARN

1	aws elbv2 create-listener --load-balancer-arn $ALBARN --protocol HTTP \<br>--port 80 --default-actions Type=forward,TargetGroupArn=$WEBTGARN

Create an environment variable for your listener ARN

export LISTARN=arn:aws:elasticloadbalancing:us-east-1:############:listener/app/MyALB/a6f121e8d8e04021/b233b9957d512d9a

1	export LISTARN=arn:aws:elasticloadbalancing:us-east-1:############:listener/app/MyALB/a6f121e8d8e04021/b233b9957d512d9a

Verify the health of your targets in each Target Group

aws elbv2 describe-target-health --target-group-arn $VIDTGARN<br>aws elbv2 describe-target-health --target-group-arn $WEBTGARN

1	aws elbv2 describe-target-health --target-group-arn $VIDTGARN<br>aws elbv2 describe-target-health --target-group-arn $WEBTGARN

Add path-based routing

conditions-pattern.json

[
    {
        "Field": "path-pattern",
        "PathPatternConfig": {
            "Values": ["/vid/*"]
        }
    }
]

[

{

"Field": "path-pattern",

"PathPatternConfig": {

"Values": ["/vid/*"]

}

]

aws elbv2 create-rule \<br>--listener-arn $LISTARN \<br>--priority 5 \<br>--conditions file://conditions-pattern.json \<br>--actions Type=forward,TargetGroupArn=$VIDTGARN

1	aws elbv2 create-rule \<br>--listener-arn $LISTARN \<br>--priority 5 \<br>--conditions file://conditions-pattern.json \<br>--actions Type=forward,TargetGroupArn=$VIDTGARN

Get your listener arns

aws elbv2 describe-rules --listener-arn $LISTARN

1	aws elbv2 describe-rules --listener-arn $LISTARN

Create environment variables for your rule ARNs

export VIDRULEARN=arn:aws:elasticloadbalancing:us-east-1:############:listener-rule/app/MyALB/a6f121e8d8e04021/b233b9957d512d9a/5ac15ce0c4755a35<br>export WEBRULEARN=arn:aws:elasticloadbalancing:us-east-1:############:listener-rule/app/MyALB/a6f121e8d8e04021/b233b9957d512d9a/d40b830a3ddef854

1	export VIDRULEARN=arn:aws:elasticloadbalancing:us-east-1:############:listener-rule/app/MyALB/a6f121e8d8e04021/b233b9957d512d9a/5ac15ce0c4755a35<br>export WEBRULEARN=arn:aws:elasticloadbalancing:us-east-1:############:listener-rule/app/MyALB/a6f121e8d8e04021/b233b9957d512d9a/d40b830a3ddef854

Test your setup

http:&#47;&#47;myalb-1394077796.us-east-1.elb.amazonaws.com/

1	http://myalb-1394077796.us-east-1.elb.amazonaws.com/

http://myalb-1394077796.us-east-1.elb.amazonaws.com/vid/

Delete Resources

Delete your listener rules

aws elbv2 delete-rule --rule-arn $VIDRULEARN<br>aws elbv2 delete-rule --rule-arn $WEBRULEARN

1	aws elbv2 delete-rule --rule-arn $VIDRULEARN<br>aws elbv2 delete-rule --rule-arn $WEBRULEARN

Delete your listener

aws elbv2 delete-listener --listener-arn $LISTARN

1	aws elbv2 delete-listener --listener-arn $LISTARN

Delete your Target Groups

aws elbv2 delete-target-group --target-group-arn $VIDTGARN<br>aws elbv2 delete-target-group --target-group-arn $WEBTGARN

1	aws elbv2 delete-target-group --target-group-arn $VIDTGARN<br>aws elbv2 delete-target-group --target-group-arn $WEBTGARN

Delete your ALB

aws elbv2 delete-load-balancer --load-balancer-arn $ALBARN

1	aws elbv2 delete-load-balancer --load-balancer-arn $ALBARN

Terminate your EC2 instances

aws ec2 terminate-instances --instance-ids $VIDSERV1 $VIDSERV2 $WEBSERV1 $WEBSERV2

1	aws ec2 terminate-instances --instance-ids $VIDSERV1 $VIDSERV2 $WEBSERV1 $WEBSERV2

Delete your subnets

aws ec2 delete-subnet --subnet-id $AZ1SUB<br>aws ec2 delete-subnet --subnet-id $AZ2SUB

1	aws ec2 delete-subnet --subnet-id $AZ1SUB<br>aws ec2 delete-subnet --subnet-id $AZ2SUB

Delete your security group

aws ec2 delete-security-group --group-id $SGID

1	aws ec2 delete-security-group --group-id $SGID

References

https://serverfault.com/questions/509136/how-do-i-set-a-vpc-in-aws-to-default-vpc-true

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Step-by-Step Guide: Setting up AWS ALB using AWS CLI

Table of Contents

AWS ALB Setup

Prerequisite

If you don’t have one, create a default vpc

Get the aws cli if you don’t already have it

Configure your aws cli

Test to make sure you have version 2 of the aws cli installed

Get the AMI id of the free tier-eligible AMI

List your VPCs

Create an environment variable for your VPC

Use a key pair from your existing key pairs

Create Resources

Create your security group

Set environment variable for your security group

Get your local IP Address

Set an environment variable for your IP address

Add ssh and HTTP rules to your inbound rules

Create your subnets

Create environment variables for your subnets

Create your EC2 instances using the AMI id of ami-03c7d01cf4dedc891 (the free tier eligible AMI), two in each subnet; one for the video server and the other for the web server.

!/bin/bash

Hello from EC2 web instance #2

Serving web interactions from EC2 web instance #2

Create environment variables for your EC2 instances

Tag your instances with names

Create your Video Load Balancer

Create environment variables for your ALB ARN and DNS name

Create your Target Groups

Create environment variables for your target group ARNs

Register your EC2 instances with your Target Groups

Create a listener for your ALB and give it a default Target Group of the web target group

Create an environment variable for your listener ARN

Verify the health of your targets in each Target Group

Add path-based routing

Get your listener arns

Create environment variables for your rule ARNs

Test your setup

Delete Resources

Delete your listener rules

Delete your listener

Delete your Target Groups

Delete your ALB

Terminate your EC2 instances

Delete your subnets

Delete your security group

References

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