Deploy ECS Application using AWS CLI > Tạo Application Load Balancing (ALB)

Tạo Application Load Balancing (ALB)

Overview

The Application Load Balancer operates at the application layer (Layer 7) of the Open Systems Interconnection (OSI) model. After receiving a request, the ALB evaluates listener rules in priority order to determine which rule to apply, then selects a target from a Target Group to continue processing.

ALB Architecture

Procedure

Configure Variables

alb_name=$project-alb
alb_tgr_name=$project-tgr
alb_vpc_id=$vpc_id
alb_subnet1_id=$subnet_public_1
alb_subnet2_id=$subnet_public_2

Create ALB

# Create ALB
alb_arn=$(aws elbv2 create-load-balancer \
    --name $alb_name  \
    --subnets $alb_subnet1_id $alb_subnet2_id \
    --security-groups $alb_sgr_id \
    --tags "$tags" \
    --query 'LoadBalancers[0].LoadBalancerArn' \
    --output text)

echo alb_arn=$alb_arn

Create Target Group

alb_tgr_arn=$(aws elbv2 create-target-group \
    --name $alb_tgr_name \
    --protocol HTTP \
    --target-type ip \
    --health-check-path "/api/product" \
    --port 8080 \
    --vpc-id $alb_vpc_id \
    --tags "$tags" \
    --query 'TargetGroups[0].TargetGroupArn' \
    --output text)

echo alb_tgr_arn=$alb_tgr_arn

Create Listener

alb_listener_arn=$(aws elbv2 create-listener \
--load-balancer-arn $alb_arn \
--protocol HTTP \
--port 80 \
--default-actions Type=forward,TargetGroupArn=$alb_tgr_arn \
--query 'Listeners[0].ListenerArn' \
--output text)

echo alb_listener_arn=$alb_listener_arn

Execution

Configure Variables
Create ALB
Check the result on the AWS Console
Create Target Group
Check the result on the AWS Console
Create Listener
Check the result on the AWS Console