Prerequisite Infra
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module "zones" {
source = "terraform-aws-modules/route53/aws//modules/zones"
version = "~> 2.0"
zones = {
"domain" = {
domain_name = local.domain
comment = "${local.domain} (production)"
tags = {
env = "production"
}
}
}
tags = {
ManagedBy = "Terraform"
}
}
module "acm" {
source = "terraform-aws-modules/acm/aws"
version = "~> 4.0"
domain_name = module.zones.route53_zone_name["domain"]
zone_id = module.zones.route53_zone_zone_id["domain"]
subject_alternative_names = [
"*.${module.zones.route53_zone_name["domain"]}",
]
wait_for_validation = true
create_route53_records = true
}
################################################################################
# VPC Module
################################################################################
module "vpc" {
source = "terraform-aws-modules/vpc/aws"
version = "~> 3.18.1"
name = local.name
cidr = "10.0.0.0/16"
azs = ["${local.region}a", "${local.region}b", "${local.region}c"]
private_subnets = ["10.0.1.0/24", "10.0.2.0/24", "10.0.3.0/24"]
public_subnets = ["10.0.101.0/24", "10.0.102.0/24", "10.0.103.0/24"]
enable_ipv6 = true
enable_nat_gateway = true
single_nat_gateway = true
map_public_ip_on_launch = false
public_route_table_tags = { Name = "${local.name}-public" }
public_subnet_tags = { Name = "${local.name}-public" }
private_route_table_tags = { Name = "${local.name}-private" }
private_subnet_tags = { Name = "${local.name}-private" }
enable_dhcp_options = true
enable_dns_hostnames = true
# dhcp_options_domain_name = data.aws_region.current.name == "us-east-1" ? "ec2.internal" : "${data.aws_region.current.name}.compute.internal"
vpc_tags = {
Name = "vpc-name"
}
}
module "vpc_endpoints" {
source = "terraform-aws-modules/vpc/aws//modules/vpc-endpoints"
version = "~> 3.0"
vpc_id = module.vpc.vpc_id
security_group_ids = [module.vpc_endpoint_security_group.security_group_id]
endpoints = {
ecr_api = {
service = "ecr.api"
private_dns_enabled = true
subnet_ids = module.vpc.private_subnets
}
ecr_dkr = {
service = "ecr.dkr"
private_dns_enabled = true
subnet_ids = module.vpc.private_subnets
}
s3 = {
service = "s3"
service_type = "Gateway"
route_table_ids = module.vpc.private_route_table_ids
}
}
tags = local.tags
}
Batch Module
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locals {
region = "us-east-1"
name = "batch-ex-fargate"
tags = {
Name = local.name
Example = local.name
Repository = "https://github.com/terraform-aws-modules/terraform-aws-batch"
}
}
module "batch" {
source = "terraform-aws-modules/batch/aws"
version = "~> 1.2"
instance_iam_role_name = "${local.name}-ecs-instance"
instance_iam_role_path = "/batch/"
instance_iam_role_description = "IAM instance role/profile for AWS Batch ECS instance(s)"
instance_iam_role_tags = {
ModuleCreatedRole = "Yes"
}
service_iam_role_name = "${local.name}-batch"
service_iam_role_path = "/batch/"
service_iam_role_description = "IAM service role for AWS Batch"
service_iam_role_tags = {
ModuleCreatedRole = "Yes"
}
create_spot_fleet_iam_role = true
spot_fleet_iam_role_name = "${local.name}-spot"
spot_fleet_iam_role_path = "/batch/"
spot_fleet_iam_role_description = "IAM spot fleet role for AWS Batch"
spot_fleet_iam_role_tags = {
ModuleCreatedRole = "Yes"
}
compute_environments = {
a_fargate = {
name_prefix = "fargate"
compute_resources = {
type = "FARGATE"
max_vcpus = 4
security_group_ids = [module.vpc_endpoint_security_group.security_group_id]
subnets = module.vpc.private_subnets
# `tags = {}` here is not applicable for spot
}
}
b_fargate_spot = {
name_prefix = "fargate_spot"
compute_resources = {
type = "FARGATE_SPOT"
max_vcpus = 4
security_group_ids = [module.vpc_endpoint_security_group.security_group_id]
subnets = module.vpc.private_subnets
# `tags = {}` here is not applicable for spot
}
}
}
# Job queus and scheduling policies
job_queues = {
low_priority = {
name = "LowPriorityFargate"
state = "ENABLED"
priority = 1
tags = {
JobQueue = "Low priority job queue"
}
}
high_priority = {
name = "HighPriorityFargate"
state = "ENABLED"
priority = 99
fair_share_policy = {
compute_reservation = 1
share_decay_seconds = 3600
share_distribution = [{
share_identifier = "A1*"
weight_factor = 0.1
}, {
share_identifier = "A2"
weight_factor = 0.2
}]
}
tags = {
JobQueue = "High priority job queue"
}
}
}
job_definitions = {
example = {
name = local.name
propagate_tags = true
platform_capabilities = ["FARGATE"]
container_properties = jsonencode({
command = ["ls", "-la"]
image = "public.ecr.aws/runecast/busybox:1.33.1"
fargatePlatformConfiguration = {
platformVersion = "LATEST"
},
resourceRequirements = [
{ type = "VCPU", value = "1" },
{ type = "MEMORY", value = "2048" }
],
executionRoleArn = aws_iam_role.ecs_task_execution_role.arn
logConfiguration = {
logDriver = "awslogs"
options = {
awslogs-group = aws_cloudwatch_log_group.this.id
awslogs-region = local.region
awslogs-stream-prefix = local.name
}
}
})
attempt_duration_seconds = 60
retry_strategy = {
attempts = 3
evaluate_on_exit = {
retry_error = {
action = "RETRY"
on_exit_code = 1
}
exit_success = {
action = "EXIT"
on_exit_code = 0
}
}
}
tags = {
JobDefinition = "Example"
}
}
}
tags = local.tags
}
################################################################################
# Supporting Resources
################################################################################
module "vpc_endpoint_security_group" {
source = "terraform-aws-modules/security-group/aws"
version = "~> 4.0"
name = "${local.name}-vpc-endpoint"
description = "Security group for VPC endpoints"
vpc_id = module.vpc.vpc_id
ingress_with_self = [
{
from_port = 443
to_port = 443
protocol = "tcp"
description = "Container to VPC endpoint service"
self = true
},
]
egress_cidr_blocks = ["0.0.0.0/0"]
egress_rules = ["https-443-tcp"]
tags = local.tags
}
resource "aws_iam_role" "ecs_task_execution_role" {
name = "${local.name}-ecs-task-exec"
assume_role_policy = data.aws_iam_policy_document.ecs_task_execution_role.json
}
data "aws_iam_policy_document" "ecs_task_execution_role" {
statement {
actions = ["sts:AssumeRole"]
principals {
type = "Service"
identifiers = ["ecs-tasks.amazonaws.com"]
}
}
}
resource "aws_iam_role_policy_attachment" "ecs_task_execution_role" {
role = aws_iam_role.ecs_task_execution_role.name
policy_arn = "arn:aws:iam::aws:policy/service-role/AmazonECSTaskExecutionRolePolicy"
}
resource "aws_cloudwatch_log_group" "this" {
name = "/aws/batch/${local.name}"
retention_in_days = 1
tags = local.tags
}