First Batch job fails with CannotPullContainerError

Question

I am trying to walk through the simple ["Submit your first Batch job"](https://us-east-2.console.aws.amazon.com/batch/home?region=us-east-2#firstRun) for AWS Batch. I go through all of the 5 steps, choosing Fargate as the platform, and leaving all items at default values, and finally submit the job. However, the job fails with this status reason:

CannotPullContainerError: inspect image has been retried 5 time(s): failed to resolve ref "docker.io/library/amazonlinux:latest": failed to do request: Head https://registry-1.docker.io/v2/library/amazonlinux/manifests/latest: dial tcp 34.237.244.67:44...

I am probably missing something very basic, but have no idea what.  Thanks!

Accepted Answer

Hello! If using Fargate and the subnets associated with your Batch compute environment do not have a NAT Gateway attached, your job will fail as it cannot connect to the internet to pull the Docker image. To solve this issue, you can set the `assignPublicIp` parameter in the Batch job definition to be `ENABLED`. For more info on Fargate compute environments in Batch, check out this [documentation](https://docs.aws.amazon.com/batch/latest/userguide/fargate.html#fargate-compute-environments).

First Batch job fails with CannotPullContainerError

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