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81 changes: 42 additions & 39 deletions main.tf
Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,11 @@ data "aws_iam_policy_document" "db-monitor-sts" {
}
}

# For allowing VPC level database access for containers
data "aws_vpc" "selected" {
id = var.vpc_id
}

data "aws_iam_policy" "db-monitor" {
name = "AmazonRDSEnhancedMonitoringRole"
}
Expand All @@ -22,9 +27,9 @@ resource "aws_iam_role" "db-monitor" {
name_prefix = "db-monitoring"
path = join("/", [
"",
lookup(var.org_meta, "url"),
lookup(var.project_meta, "short_name"),
lookup(var.project_meta, "name"),
var.deployment_environment,
"rds-role",
""
])
}
Expand All @@ -33,8 +38,9 @@ resource "aws_db_subnet_group" "database" {
description = "Subnet group to host the database in"

name = join("-", [
lookup(var.project_meta, "short_name"),
var.deployment_environment
lookup(var.project_meta, "name"),
var.deployment_environment,
"db-subnet"
]
)

Expand All @@ -45,9 +51,10 @@ resource "aws_security_group" "database" {
description = "Attach to database instance and app services"

name_prefix = join("-", [
lookup(var.project_meta, "short_name"),
lookup(var.project_meta, "name"),
var.deployment_environment,
"database"
"rds",
"db-subnet",
]
)

Expand All @@ -61,6 +68,22 @@ resource "aws_security_group" "database" {
self = true
}

ingress {
description = "Allow traffic from app server"
from_port = lookup(var.database, "port")
to_port = lookup(var.database, "port")
protocol = "tcp"
cidr_blocks = [ data.aws_vpc.selected.cidr_block ]
}

ingress {
description = "Allow traffic from app server (IPv6)"
from_port = lookup(var.database, "port")
to_port = lookup(var.database, "port")
protocol = "tcp"
ipv6_cidr_blocks = [ data.aws_vpc.selected.ipv6_cidr_block ] # Replace with actual IPv6 CIDR block
}

egress {
from_port = 0
to_port = 0
Expand All @@ -84,7 +107,8 @@ resource "random_pet" "db" {

resource "aws_rds_cluster" "database" {
cluster_identifier = join("-", [
lookup(var.project_meta, "short_name"),
lookup(var.project_meta, "name"),
"rds",
var.deployment_environment
]
)
Expand Down Expand Up @@ -114,7 +138,7 @@ resource "aws_rds_cluster" "database" {

vpc_security_group_ids = [aws_security_group.database.id]
db_subnet_group_name = aws_db_subnet_group.database.name
network_type = "DUAL"
network_type = var.network_type

apply_immediately = true
deletion_protection = var.deletion_protection
Expand All @@ -130,9 +154,8 @@ resource "aws_rds_cluster" "database" {
resource "aws_rds_cluster_instance" "database" {
cluster_identifier = aws_rds_cluster.database.id
identifier_prefix = join("-", [
lookup(var.project_meta, "short_name"),
var.deployment_environment,
random_pet.db.id
lookup(var.project_meta, "name"),
var.deployment_environment
]
)

Expand All @@ -156,40 +179,20 @@ resource "aws_rds_cluster_instance" "database" {
**/
}

resource "aws_secretsmanager_secret" "db-credentials" {
resource "aws_secretsmanager_secret" "db-credentials-password" {
description = "Database connection parameters and access credentials"

name_prefix = join("/", [
lookup(var.org_meta, "url"),
lookup(var.project_meta, "short_name"),
lookup(var.project_meta, "name"),
var.deployment_environment,
"database"
"rds",
"POSTGRES_PASSWORD"
]
)
}

resource "aws_secretsmanager_secret_version" "db-credentials" {
secret_id = aws_secretsmanager_secret.db-credentials.id
secret_string = jsonencode(
zipmap(
[
"dbinstanceidentifier",
"dbname",
"engine",
"host",
"port",
"username",
"password"
],
[
aws_rds_cluster.database.id,
aws_rds_cluster.database.database_name,
aws_rds_cluster.database.engine,
aws_rds_cluster.database.endpoint,
aws_rds_cluster.database.port,
aws_rds_cluster.database.master_username,
aws_rds_cluster.database.master_password
]
)
)
resource "aws_secretsmanager_secret_version" "db-credentials-password" {
secret_id = aws_secretsmanager_secret.db-credentials-password.id
secret_string = aws_rds_cluster.database.master_password
}

24 changes: 20 additions & 4 deletions outputs.tf
Original file line number Diff line number Diff line change
Expand Up @@ -10,10 +10,6 @@ output "database_security_group_id" {
value = aws_security_group.database.id
}

output "database_credentials" {
value = aws_secretsmanager_secret_version.db-credentials.arn
}

output "database_connection_host" {
value = aws_rds_cluster.database.endpoint
}
Expand All @@ -29,3 +25,23 @@ output "database_name" {
output "database_connection_user" {
value = aws_rds_cluster.database.master_username
}

output "database_config_as_ecs_inputs" {
description = "This is to easily merge with ECS module"
value = {
POSTGRES_USER = aws_rds_cluster.database.master_username
POSTGRES_ENDPOINT = aws_rds_cluster.database.endpoint
POSTGRES_DB = aws_rds_cluster.database.database_name
POSTGRES_PORT = aws_rds_cluster.database.port
}
}

output "database_config_as_ecs_secrets_inputs" {
description = "This is to easily merge with ECS module"
value = [
{
name = "POSTGRES_PASSWORD"
valueFrom = aws_secretsmanager_secret_version.db-credentials-password.arn
}
]
}
4 changes: 4 additions & 0 deletions variables.tf
Original file line number Diff line number Diff line change
Expand Up @@ -135,3 +135,7 @@ variable "default_tags" {
}
}

variable "network_type" {
type = string
default = "DUAL"
}