<@ULVA73B9P> Can I see a working example of the co...
# ask-marvin
m
@Marvin Can I see a working example of the config for a flow using an ECS Worker that's using the
capacity_provider
arg?
m
It appears that we have found an overview of how to configure an ECS worker to use the
capacity_provider
argument in Prefect 2.x. Here is an example configuration based on the information retrieved: ### JSON Configuration for ECS Worker
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json
{
    "family": "prefect-worker-task",
    "networkMode": "awsvpc",
    "requiresCompatibilities": [
        "FARGATE"
    ],
    "cpu": "512",
    "memory": "1024",
    "executionRoleArn": "<your-ecs-task-role-arn>",
    "taskRoleArn": "<your-ecs-task-role-arn>",
    "containerDefinitions": [
        {
            "name": "prefect-worker",
            "image": "prefecthq/prefect:2-latest",
            "cpu": 512,
            "memory": 1024,
            "essential": true,
            "command": [
                "/bin/sh",
                "-c",
                "pip install prefect-aws && prefect worker start --pool my-ecs-pool --type ecs"
            ],
            "environment": [
                {
                    "name": "PREFECT_API_URL",
                    "value": "<your-prefect-api-url>"
                },
                {
                    "name": "PREFECT_API_KEY",
                    "value": "<your-prefect-api-key>"
                }
            ],
            "capacityProviderStrategy": [
                {
                    "capacityProvider": "FARGATE",
                    "weight": 1
                }
            ]
        }
    ]
}
### Note Replace the placeholder values (
<your-ecs-task-role-arn>
,
<your-prefect-api-url>
,
<your-prefect-api-key>
) with your actual configuration details. #### References: - ECS Worker Guide - ECS Worker Configuration If you need further assistance or a more specialized configuration, feel free to ask.
m
I'm looking for how you'd use the
.deploy
syntax
@Marvin I'm looking for how you'd use the
.deploy
syntax
m
It looks like we found some insights but not specific examples using the
.deploy
syntax for ECS workers with the
capacity_provider
argument. Here is how you can structure your deployment configuration in Python utilizing the
.deploy
syntax from Prefect. ### Example using
.deploy
with ECS Worker and
capacity_provider
First, ensure you have the
prefect-aws
package installed:
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shell
pip install prefect-aws
Here's how you might write a deployment script:
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python
from prefect.deployments import Deployment
from prefect.infrastructure.aws import ECSTask
from prefect.flow_runners import SubprocessFlowRunner

# Define ECS Task configuration
ecs_task = ECSTask(
    image="prefecthq/prefect:2-latest",
    task_role_arn="<your-ecs-task-role-arn>",
    execution_role_arn="<your-ecs-task-role-arn>",
    cpu=512,
    memory=1024,
    capacity_provider_strategy=[{"capacityProvider": "FARGATE", "weight": 1}]
)

# Define Deployment using ECS Task
deployment = Deployment(
    flow_location="<your-python-flow-script.py>",
    name="example-ecs-deployment",
    infrastructure=ecs_task,
    flow_runner=SubprocessFlowRunner()
)

# Apply Deployment
deployment.apply()
### Important Parameters: -
task_role_arn
and `execution_role_arn`: Replace these with the appropriate IAM roles. - `capacity_provider_strategy`: Defines the capacity provider with
FARGATE
. Remember to replace the placeholders with actual values relevant to your AWS environment. For further details and updates, refer to the ECS Worker Guide directly: - ECS Worker Guide If you face any specific issues, it might be helpful to refer to Prefect documentation or open an issue on Prefect's GitHub repository.