Elastic Container Service (ECS)

Question 1

What happens if you terminate a ECS container instance while it was in STOPPED state?

Answer 1

If you terminate a container instance while it is in the STOPPED state, that container instance isn’t automatically removed from the cluster.

Question 2

How do you set an EC2 instance to join an ECS cluster?

Answer 2

In the /etc/ecs/ecs.config file you have to configure the parameter ECS_CLUSTER=’your_cluster_name’ to register the container instance with a cluster named ‘your_cluster_name’.

Question 3

Which environment variable can be used by AWS X-Ray SDK to ensure that the daemon is correctly discovered on ECS?

Answer 3

AWS_XRAY_DAEMON_ADDRESS

Question 4

What is AWS_XRAY_DAEMON_ADDRESS on ECS?

Answer 4

AWS_XRAY_DAEMON_ADDRESS is an ECS environment variable where you set the name of the X-Ray ECS container.