Expert AWS Development

Basic concepts of a container instance

• A container instance must run the Amazon ECS container agent to register the clusters. If your AMI is Amazon ECS-optimized then the agent is already installed. For different operating systems, you must install the agent.
• The Amazon ECS container agent makes calls to the Amazon ECS on your behalf. Your container instance must be launched with a proper IAM role to authenticate the account and provide the appropriate resource permission.
• If you need any external connectivity from the containers to your associated task, you can map network ports to the ports on the host Amazon ECS container instance, so that it is reachable from the internet. In this case, you must provide inbound access to the ports that ...