Terraform: AWS Cron Job

Terraform Module that spins up a Docker-based scheduled job on AWS ECR.

Source code referenced by the blog post: https://hyperscience.com/tech-blog/running-scheduled-jobs-in-aws/

Providers

Name	Version
aws	n/a

Inputs

Name	Description	Type	Default	Required
cloudwatch_schedule_expression	AWS cron schedule expression	string	n/a	yes
ecr_repo_name	Name of the ECR repo that contains the Docker image of your cron job	string	n/a	yes
ecs_cluster_name	(Optional) Name of the ECS Cluster that you want to execute your cron job. Defaults to your task name if no value is supplied	string	""	no
ecs_task_execution_role_name	If the default AWS ECSTaskExecutionRole is not sufficient for your needs, you can provide your own ECS Task Execution Role here. The module will attach a CloudWatch policy for logging purposes.	string	""	no
extra_container_defs	Additional configuration that you want to add to your task definition (see https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task_definition_parameters.html for all options)	any	{}	no
image_tag	Docker tag of the container that you want to run	string	n/a	yes
subnet_ids	Subnets where the job will be run	list(string)	n/a	yes
task_cpu	CPU units to allocate to your job (vCPUs * 1024)	number	1024	no
task_memory	In MiB	number	2048	no
task_name	Name of the task for resource naming	string	n/a	yes
task_role_arn	IAM role ARN for your task if it needs to access any AWS resources. IMPORTANT: This must have an AssumeRolePolicy that includes the 'ecs-tasks.amazonaws.com' provider!!	any	null	no

Outputs

Name	Description
sns_topic_arn	ARN of the SNS Topic where job failure notifications are sent