Create ECS Cluster
You now create an AWS ECS Cluster that uses the task definition from the previous section.
1. Go to AWS ECS console.
2. In the left sidebar,
- Choose Clusters.
- Click Create cluster.
3. In the Cluster configuration section, enter fcj for Cluster name.
4. Scroll down to the bottom, click Create.
You next create an ECS service that run the AWSome Books application at scale.
5. In the Services tab of your newly created fcj ECS cluster details page, click Create.
6. In the Environment section, select Launch type for Compute options.
7. In the Deployment configuration section,
- For Family, choose awsome-books.
- For Service name, enter
awsome-books.
- For Desired tasks, enter 2.
- For Deployment type, choose Blue/green deployment (powered by AWS CodeDeploy).
- For Service role for CodeDeploy, choose ecsCodeDeployRole.
8. In the Networking section,
- For VPC, choose the VPC named fcj.
- For Subnets, select subnets fcj-private-02 and fcj-private-05.
- For Security group, select fcj-ecs-fargate.
- For Public IP, disable Turned off.
9. In the Load balancing section,
- For Load balancer type, choose Application Load Balancer.
- For Application Load Balancer, select Use an existing load balancer.
- For Load balancer, choose
fcj-alb.
- For Target group 1 name, enter
blue-tg-fcj-awsome-books. - For Deregistration delay, enter 10.
Enter the same for target group 2, replace Target group 2 name as green-tg-fcj-awsome-books instead.
10. In the Service auto scaling section,
- Tick Use service auto scaling.
- For Minimum number of tasks, enter 2.
- For Maximum number of tasks, enter 4.
- For Scaling policy type, choose Target tracking.
- For Policy name, enter
target-tracking-policy. - For ECS service metric, select ECSServiceAverageCPUUtilization.
- For Target value, enter 70.
- For Scale-out cooldown period, enter 60.
- For Scale-in cooldown period, enter 60.
11. Scroll down to the bottom, click Create.
12. ECS tasks are going to pull container image from ECR repository through VPC endpoints. You should see 2 running ECS tasks in the awsome-books ECS service after a while. You cannot, however, access these tasks directly or via Application Load Balancer since they are all private in the VPC without Internet access configurations.
