terraform that creates single aurora cluster and schedules cluster to run during business hours - terraform-provider-aws

Question

Sorry I am a beginner at terraform and found some useful modules.
I need to make a single aurora instance cluster for non-production and I need to shutdown after business hours.
how can I create an aurora cluster and schedule to run during business hours???
I can't get the scheduler to connect to the RDS cluster
provider "aws" {
region = local.region
}
locals {
name = "example-aurora"
region = "us-east-1"
tags = {
Owner = "user"
Environment = "dev"
}
}
################################################################################
# Supporting Resources
################################################################################
resource "random_password" "master" {
length = 10
}
module "vpc" {
source = "terraform-aws-modules/vpc/aws"
version = "~> 3.0"
name = "aurora_vpc"
cidr = "10.99.0.0/18"
enable_dns_support = true
enable_dns_hostnames = true
azs = ["${local.region}a", "${local.region}b", "${local.region}c"]
public_subnets = ["10.99.0.0/24", "10.99.1.0/24", "10.99.2.0/24"]
private_subnets = ["10.99.3.0/24", "10.99.4.0/24", "10.99.5.0/24"]
database_subnets = ["10.99.7.0/24", "10.99.8.0/24", "10.99.9.0/24"]
tags = local.tags
}
resource "aws_db_parameter_group" "muffy-pg" {
family = "postgres13"
name = "peter-rds-param-group"
parameter {
apply_method = "immediate"
name = "autovacuum_naptime"
value = "30"
}
parameter {
apply_method = "pending-reboot"
name = "autovacuum_max_workers"
value = "15"
}
}
resource "aws_docdb_cluster_parameter_group" "muffy-cluster-pg" {
name = "peter-rds-param-group"
family = "postgres13"
}
module "cluster" {
source = "terraform-aws-modules/rds-aurora/aws"
name = "test-aurora-db-postgres96"
engine = "aurora-postgresql"
engine_version = "13.7"
instance_class = "db.t3.small"
instances = {
one = {}
two = {}
}
vpc_id = module.vpc.vpc_id
subnets = [module.vpc.database_subnets[0], module.vpc.database_subnets[1], module.vpc.database_subnets[2]]
# allowed_security_groups = ["sg-12345678"]
allowed_cidr_blocks = ["10.99.0.0/18"]
storage_encrypted = true
apply_immediately = true
monitoring_interval = 10
db_parameter_group_name = aws_db_parameter_group.muffy-pg.name
db_cluster_parameter_group_name = aws_docdb_cluster_parameter_group.muffy-cluster-pg.name
enabled_cloudwatch_logs_exports = ["postgresql"]
tags = {
Environment = "dev"
Terraform = "true"
}
}
variable "environment" {
default = "dev"
}
module "rds_schedule" {
depends_on = [module.cluster]
source = "github.com/barryw/terraform-aws-rds-scheduler"
# version = "~> 2.0.0"
/* Don't stop RDS in production! */
skip_execution = var.environment == "prod"
identifier = "peter-scheduler"
/* Start the RDS cluster at 6:50am EDT Monday - Friday */
up_schedule = "cron(50 10 ? * MON-FRI *)"
/* Stop the RDS cluster at 9pm EDT every night */
down_schedule = "cron(0 1 * * ? *)"
rds_identifier = module.cluster.identifier
is_cluster = true
}

Answer 1

I guess the issue is with rds_identifier value used under module "rds_schedule"
rds_identifier = module.cluster.identifier
It should be,
rds_identifier = module.cluster.cluster_id
The source module for the aurora cluster used here "terraform-aws-modules/rds-aurora/aws" outputs the cluster identifier as cluster_id not cluster_identifier
Github Reference:
https://registry.terraform.io/modules/terraform-aws-modules/rds-aurora/aws/latest#outputs