EC2 instance not joining ECS Cluster

Question

I have an EC2 cluster and I'm trying to add EC2 machines to it.

I have added ECS_CLUSTER=cluster_name to /etc/ecs/ecs.config with user data but the instance doesn't join the cluster.

I'm looking for log files or any other evidence of the cluster-joining process that may indicate why my instance is not joining. I do not have a /var/log/ecs folder.

Answer 1

You need to use an ECS AMI,

Or you need to install the ECS agent

http://docs.aws.amazon.com/AmazonECS/latest/developerguide/ecs-agent-install.html

And then you need to start/restart the ecs agent after changing that config

restart ecs