AWS Elastic Container Service (ECS)

Overview

• Orchestration for containers
• Deploy, manage, scale

Task Definitions

• Describes application—cf. Kubernetes manifest
• JSON file
• Up to 10 containers
• Includes ports, data volumes, launch type etc.

Launch Types

• Fargate—fully managed, no instances
• EC2—self-managed infrastructure, EC2 instances
• External—self-managed, on-prem instances

Tasks

• Instantiation of task definition with cluster (logical grouping of container instances—EC2 instances)
• Tasks placed on instances via selection of strategies, e.g.
  • Binpack
  • Spread
  • Random
• Configure number of instances of task—load balance

Updates

• Create new revision
• Deployment strategies:
  • Rolling update
  • Blue/green
  • External—any third party deployment controller