ECR: Task showing pending for more than an hour

Hello.

Not sure if it is usual to have a task pending for more than an hour.

There may be a problem with the network settings such as the subnet used by ECS.
How about checking the following documents and troubleshooting?
https://repost.aws/knowledge-center/ecs-fargate-tasks-pending-state

There could be multiple reasons to see this behavior :

1. Verify that your task definition is not seeking more resources (cpu, memory etc.) than what the container instance can offer. This could lead to insufficient resources situation

2. Check for any task placement constraints that might be disallowing the task to be scheduled on the lone container instance you have in your setup as per https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task-placement-constraints.html

3. I would also suggest to verify your task definition for any syntax errors or missing any mandatory parameters.

4. Would also suggest to check the desired count and deployment configuration for your ecs service to ensure it meets the task demands. https://docs.aws.amazon.com/codedeploy/latest/userguide/deployment-configurations.html#deployment-configuration-ecs