Register EC2 instance to ECS cluster without public ip

amazon-web-services amazon-ec2 amazon-ecs
Ionut picture Ionut · Jul 26, 2016 · Viewed 10.7k times · Source

I'm having hard times adding instances that are created in my VPC and on a private subnet(no internet gateway attached to it) to ECS cluster.

Right now the only way I've managed to do this was by adding a public IP and have a NAT instance/gateway configured.

How do you use ECS clusters with private subnets?

Answer

Ionut picture Ionut · Jul 29, 2016

I guess I've found the answer on the AWS documentation and it seems I need to use a NAT instance/Gateway :(

Another source and also the official documentaion

"...Container instances need external network access to communicate with the Amazon ECS service endpoint, so if your container instances are running in a private VPC, they need a network address translation (NAT) instance to provide this access. For more information, see NAT Instances in the Amazon VPC User Guide."

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