Show me an example of scheduling a cronjob that prints the unix timestamp in aws fargate

To schedule a cronjob that prints the Unix timestamp in AWS Fargate, you can use a combination of Pulumi AWS resources:

Use the aws.ecs.Cluster to create an ECS Cluster.
Use aws.ecs.TaskDefinition to define the Fargate task - this details the Docker container and the command that should run. Here, the task logs the current Unix timestamp.
Use aws.cloudwatch.EventRule to define a cron schedule.
Use aws.cloudwatch.EventTarget to associate the event rule and the ECS task.

Now, here's the Python program to accomplish this:

import pulumi
from pulumi_aws import cloudwatch, ecs

# Create an ECS cluster to run a task definition
cluster = ecs.Cluster("my-cluster")

# Create a task that prints the current time every minute
task_definition = ecs.TaskDefinition("my-task",
    family="fargate-task-definition",
    cpu="256",
    memory="512",
    network_mode="awsvpc",
    requires_compatibilities=["FARGATE"],
    execution_role_arn="your-execution-role-arn",
    container_definitions=pulumi.Output.from_input([{
        "name": "my-container",
        "image": "amazon/amazon-ecs-sample",
        "command": [ "sh", "-c", "while true; do date +%s; sleep 1; done" ]
    }]))

# Create a Cloudwatch event rule on a schedule
rule = cloudwatch.EventRule("scheduled-task",
    schedule_expression="rate(1 minute)")

# Associate the event rule and the task definition in an event target
target = cloudwatch.EventTarget("scheduled-task-target",
    rule=rule.name,
    arn=task_definition.task_definition_arn,
    role_arn="your-execution-role-arn",
    ecs_target=cloudwatch.EventTargetEcsTargetArgs(
        task_count=1,
        launch_type="FARGATE",
        network_configuration=cloudwatch.EventTargetEcsTargetNetworkConfigurationArgs(
            assign_public_ip="ENABLED",
            subnets=["subnet-abcde0123"],
            security_groups=["sg-abcde0123"],
        )
    ))

# Export the ARN of the region to the Pulumi stack
pulumi.export('region', target.arn)

This program creates a Fargate task that prints the current Unix timestamp, scheduled every minute.

You have to replace "your-execution-role-arn", "subnet-abcde0123", and "sg-abcde0123" with your actual AWS Execution Role ARN, Subnet IDs and Security Group ID respectively. You could get this information from your AWS Console.

The task leverages an ECS Fargate task. To log the Unix timestamp, the task runs a shell command to print and log the current Unix timestamp every second.

The schedule is defined by the Cloudwatch event rule which triggers every minute. The event target combines this rule with the ECS task.

Once the program is executed, it will schedule the Fargate task as a cronjob, running the command every minute and logging the Unix timestamp.

Please refer Pulumi Registry for more details on these resources: