Amazon EC2 Container Service (Amazon ECS) is a container management service that makes it easy to run, stop, and manage Docker containers on a cluster of Amazon EC2 instances. When you run tasks using Amazon ECS, you place them on a cluster, which is a logical grouping of EC2 instances. Amazon ECS downloads your container images from a registry that you specify, and runs those images on the container instances within your cluster.
There are times when EC2 instances need to be removed from the cluster, for example cluster scale-down or updating an AMI. Today we have delivered Container Instance Draining to simplify these scenarios. The draining state prevents new tasks from being started on the container instance, notifies the service scheduler to move tasks that are running on the instance to other instances in the cluster, and enables you to wait until tasks have successfully moved before terminating the instance.
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Download the CloudFormation template
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Launch the CloudFormation template that creates the following AWS resources:
- The VPC and associated network elements (subnets, security groups, route table, etc)
- ECS Cluster, ECS service, a sample ECS task definition
- Auto scaling group with two EC2 instances and a termination lifecycle hook
- Lambda function, permissions to invoke lambda, and lambda execution roles
- SNS topic, policy
For the full solution overview visit Blog link.
- cform/ecs.yaml
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