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main.tf
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main.tf
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locals {
# Evaluates if a parameter wasn't supplied in the input map (someone didn't want to use it) and returns only the objects that have been configured
db_parameters = { for parameter, value in lookup(var.db_parameters, var.engine, {}) : parameter => value if value != null /* object */ }
}
resource "random_id" "rid" {
byte_length = 5
}
resource "aws_rds_cluster_parameter_group" "rds" {
name = "${var.db_parameter_group_name}-${random_id.rid.dec}"
family = var.db_parameter_group_family
dynamic "parameter" {
for_each = local.db_parameters
content {
name = parameter.key
value = parameter.value.value
apply_method = parameter.value.apply_method
}
}
lifecycle {
create_before_destroy = true #https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/db_parameter_group#create_before_destroy-lifecycle-configuration
}
}
resource "aws_rds_cluster_instance" "cluster_instances" {
count = 2
identifier = "${var.cluster_instance_identifier}-${count.index}"
cluster_identifier = aws_rds_cluster.default.id
instance_class = var.instance_class
engine = aws_rds_cluster.default.engine
engine_version = aws_rds_cluster.default.engine_version
}
resource "aws_rds_cluster" "default" {
cluster_identifier = var.cluster_identifier
engine = var.engine
engine_version = var.engine_version
availability_zones = var.availability_zones
database_name = var.database_name
master_username = var.master_username
master_password = var.db_password
backup_retention_period = var.backup_retention_period
preferred_backup_window = var.preferred_backup_window
skip_final_snapshot = var.skip_final_snapshot
db_cluster_parameter_group_name = aws_rds_cluster_parameter_group.rds.name
}