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Hey everyone! I managed to write the necessary In...
# prefect-community
k
Hey everyone! I managed to write the necessary Infrastructure as Code (via Pulumi) for a light-weight Prefect agent that runs as an ECS Service. I was hoping to get a nice welcome message in the logs. Unfortunately, I get the 
prefect
cli help message over and over again. ECS console shows a list of 
STOPPED
tasks, which I'm assuming are various attempts to start the service and keep it running.
✅ 2
Dockerfile for Prefect Agent
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FROM prefecthq/prefect:2-python3.10

# Install dependencies for AWS
RUN pip install s3fs prefect-aws

# Register AWS block types
RUN prefect block register -m prefect_aws.ecs
Relevant container configuration, from ECS Task Definition for Prefect Agent, ECS Service
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{
  "name": "container",
  "image": "long-image-identifier",
  "cpu": 0,
  "portMappings": [],
  "essential": true,
  "entryPoint": [
    "bash",
    "-c"
  ],
  "command": [
    "prefect",
    "agent",
    "start",
    "-q",
    "main"
  ],
  "environment": [],
  "mountPoints": [],
  "volumesFrom": [],
  "secrets": [
    {
      "name": "PREFECT_API_URL",
      "valueFrom": "long-arn"
    },
    {
      "name": "PREFECT_API_KEY",
      "valueFrom": "long-arn"
    }
  ],
  "stopTimeout": 120,
  "logConfiguration": {
    "logDriver": "awslogs",
    "options": {
      "awslogs-group": "my-log-group",
      "awslogs-region": "us-east-1",
      "awslogs-stream-prefix": "container"
    }
  }
}
I think 
prefect
is installed correctly, because I'm getting the CLI help message. This makes me wonder if my supplied 
command
is wrong. I'd want the service to run
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prefect agent start -q main
c
Hi Kelvin, not sure if you saw this, but we have some existing recipes that tackle this? https://github.com/PrefectHQ/prefect-recipes/tree/main/devops/infrastructure-as-code/aws/tf-prefect2-ecs-agent
Here is an example task definition:
I don’t think you need the bash entrypoint
✅ 1
🎉 1
k
Hey! Thanks so much for the quick reply I just noticed that I'm using 
entryPoint: ["bash" "-c"]
which is wrong. I have been setting up my team's resources by following the 
dataflow-ops
repository. Thank you for these additional links!
FIXED!
🙌 1
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