Terraform module to provision an RDS Aurora cluster for MySQL or Postgres.
Supports Amazon Aurora Serverless.
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module "rds_cluster_aurora_postgres" {
source = "git::https://github.com/cloudposse/terraform-aws-rds-cluster.git?ref=master"
name = "postgres"
engine = "aurora-postgresql"
cluster_family = "aurora-postgresql9.6"
cluster_size = "2"
namespace = "eg"
stage = "dev"
admin_user = "admin1"
admin_password = "Test123456789"
db_name = "dbname"
db_port = "5432"
instance_type = "db.r4.large"
vpc_id = "vpc-xxxxxxxx"
security_groups = ["sg-xxxxxxxx"]
subnets = ["subnet-xxxxxxxx", "subnet-xxxxxxxx"]
zone_id = "Zxxxxxxxx"
}module "rds_cluster_aurora_mysql_serverless" {
source = "git::https://github.com/cloudposse/terraform-aws-rds-cluster.git?ref=master"
namespace = "eg"
stage = "dev"
name = "db"
engine = "aurora"
engine_mode = "serverless"
cluster_family = "aurora5.6"
cluster_size = "0"
admin_user = "admin1"
admin_password = "Test123456789"
db_name = "dbname"
db_port = "3306"
instance_type = "db.t2.small"
vpc_id = "vpc-xxxxxxxx"
security_groups = ["sg-xxxxxxxx"]
subnets = ["subnet-xxxxxxxx", "subnet-xxxxxxxx"]
zone_id = "Zxxxxxxxx"
scaling_configuration = [
{
auto_pause = true
max_capacity = 256
min_capacity = 2
seconds_until_auto_pause = 300
},
]
}module "rds_cluster_aurora_mysql" {
source = "git::https://github.com/cloudposse/terraform-aws-rds-cluster.git?ref=master"
engine = "aurora"
cluster_family = "aurora-mysql5.7"
cluster_size = "2"
namespace = "eg"
stage = "dev"
name = "db"
admin_user = "admin1"
admin_password = "Test123456789"
db_name = "dbname"
instance_type = "db.t2.small"
vpc_id = "vpc-xxxxxxx"
security_groups = ["sg-xxxxxxxx"]
subnets = ["subnet-xxxxxxxx", "subnet-xxxxxxxx"]
zone_id = "Zxxxxxxxx"
cluster_parameters = [
{
name = "character_set_client"
value = "utf8"
},
{
name = "character_set_connection"
value = "utf8"
},
{
name = "character_set_database"
value = "utf8"
},
{
name = "character_set_results"
value = "utf8"
},
{
name = "character_set_server"
value = "utf8"
},
{
name = "collation_connection"
value = "uft8_bin"
},
{
name = "collation_server"
value = "uft8_bin"
},
{
name = "lower_case_table_names"
value = "1"
apply_method = "pending-reboot"
},
{
name = "skip-character-set-client-handshake"
value = "1"
apply_method = "pending-reboot"
},
]
}# create IAM role for monitoring
resource "aws_iam_role" "enhanced_monitoring" {
name = "rds-cluster-example-1"
assume_role_policy = "${data.aws_iam_policy_document.enhanced_monitoring.json}"
}
# Attach Amazon's managed policy for RDS enhanced monitoring
resource "aws_iam_role_policy_attachment" "enhanced_monitoring" {
role = "${aws_iam_role.enhanced_monitoring.name}"
policy_arn = "arn:aws:iam::aws:policy/service-role/AmazonRDSEnhancedMonitoringRole"
}
# allow rds to assume this role
data "aws_iam_policy_document" "enhanced_monitoring" {
statement {
actions = [
"sts:AssumeRole",
]
effect = "Allow"
principals {
type = "Service"
identifiers = ["monitoring.rds.amazonaws.com"]
}
}
}
module "rds_cluster_aurora_postgres" {
source = "git::https://github.com/cloudposse/terraform-aws-rds-cluster.git?ref=master"
engine = "aurora-postgresql"
cluster_family = "aurora-postgresql9.6"
cluster_size = "2"
namespace = "eg"
stage = "dev"
name = "db"
admin_user = "admin1"
admin_password = "Test123456789"
db_name = "dbname"
db_port = "5432"
instance_type = "db.r4.large"
vpc_id = "vpc-xxxxxxx"
security_groups = ["sg-xxxxxxxx"]
subnets = ["subnet-xxxxxxxx", "subnet-xxxxxxxx"]
zone_id = "Zxxxxxxxx"
# enable monitoring every 30 seconds
rds_monitoring_interval = "30"
# reference iam role created above
rds_monitoring_role_arn = "${aws_iam_role.enhanced_monitoring.arn}"
}Available targets:
help Help screen
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help/short This help short screen
lint Lint terraform code
| Name | Description | Type | Default | Required |
|---|---|---|---|---|
| admin_password | (Required unless a snapshot_identifier is provided) Password for the master DB user | string | `` | no |
| admin_user | (Required unless a snapshot_identifier is provided) Username for the master DB user | string | admin |
no |
| allowed_cidr_blocks | List of CIDR blocks allowed to access | list | <list> |
no |
| apply_immediately | Specifies whether any cluster modifications are applied immediately, or during the next maintenance window | string | true |
no |
| attributes | Additional attributes (e.g. 1) |
list | <list> |
no |
| autoscaling_enabled | Whether to enable cluster autoscaling | string | false |
no |
| autoscaling_max_capacity | Maximum number of instances to be maintained by the autoscaler | string | 5 |
no |
| autoscaling_min_capacity | Minimum number of instances to be maintained by the autoscaler | string | 1 |
no |
| autoscaling_policy_type | Autoscaling policy type. TargetTrackingScaling and StepScaling are supported |
string | TargetTrackingScaling |
no |
| autoscaling_scale_in_cooldown | The amount of time, in seconds, after a scaling activity completes and before the next scaling down activity can start. Default is 300s | string | 300 |
no |
| autoscaling_scale_out_cooldown | The amount of time, in seconds, after a scaling activity completes and before the next scaling up activity can start. Default is 300s | string | 300 |
no |
| autoscaling_target_metrics | The metrics type to use. If this value isn't provided the default is CPU utilization | string | RDSReaderAverageCPUUtilization |
no |
| autoscaling_target_value | The target value to scale with respect to target metrics | string | 75 |
no |
| backup_window | Daily time range during which the backups happen | string | 07:00-09:00 |
no |
| cluster_dns_name | Name of the cluster CNAME record to create in the parent DNS zone specified by zone_id. If left empty, the name will be auto-asigned using the format master.var.name |
string | `` | no |
| cluster_family | The family of the DB cluster parameter group | string | aurora5.6 |
no |
| cluster_parameters | List of DB parameters to apply | list | <list> |
no |
| cluster_size | Number of DB instances to create in the cluster | string | 2 |
no |
| db_name | Database name | string | - | yes |
| db_port | Database port | string | 3306 |
no |
| deletion_protection | If the DB instance should have deletion protection enabled. | string | false |
no |
| delimiter | Delimiter to be used between name, namespace, stage and attributes |
string | - |
no |
| enabled | Set to false to prevent the module from creating any resources | string | true |
no |
| enabled_cloudwatch_logs_exports | List of log types to export to cloudwatch. The following log types are supported: audit, error, general, slowquery. | list | <list> |
no |
| engine | The name of the database engine to be used for this DB cluster. Valid values: aurora, aurora-mysql, aurora-postgresql |
string | aurora |
no |
| engine_mode | The database engine mode. Valid values: parallelquery, provisioned, serverless |
string | provisioned |
no |
| engine_version | The version number of the database engine to use | string | `` | no |
| iam_database_authentication_enabled | Specifies whether or mappings of AWS Identity and Access Management (IAM) accounts to database accounts is enabled. | string | false |
no |
| instance_availability_zone | Optional parameter to place cluster instances in a specific availability zone. If left empty, will place randomly | string | `` | no |
| instance_parameters | List of DB instance parameters to apply | list | <list> |
no |
| instance_type | Instance type to use | string | db.t2.small |
no |
| kms_key_arn | The ARN for the KMS encryption key. When specifying kms_key_arn, storage_encrypted needs to be set to true. | string | `` | no |
| maintenance_window | Weekly time range during which system maintenance can occur, in UTC | string | wed:03:00-wed:04:00 |
no |
| name | Name of the application | string | - | yes |
| namespace | Namespace (e.g. eg or cp) |
string | - | yes |
| performance_insights_enabled | Whether to enable Performance Insights | string | false |
no |
| performance_insights_kms_key_id | The ARN for the KMS key to encrypt Performance Insights data. When specifying performance_insights_kms_key_id, performance_insights_enabled needs to be set to true |
string | `` | no |
| publicly_accessible | Set to true if you want your cluster to be publicly accessible (such as via QuickSight) | string | false |
no |
| rds_monitoring_interval | Interval in seconds that metrics are collected, 0 to disable (values can only be 0, 1, 5, 10, 15, 30, 60) | string | 0 |
no |
| rds_monitoring_role_arn | The ARN for the IAM role that can send monitoring metrics to CloudWatch Logs | string | `` | no |
| reader_dns_name | Name of the reader endpoint CNAME record to create in the parent DNS zone specified by zone_id. If left empty, the name will be auto-asigned using the format replicas.var.name |
string | `` | no |
| replication_source_identifier | ARN of a source DB cluster or DB instance if this DB cluster is to be created as a Read Replica | string | `` | no |
| retention_period | Number of days to retain backups for | string | 5 |
no |
| scaling_configuration | List of nested attributes with scaling properties. Only valid when engine_mode is set to serverless |
list | <list> |
no |
| security_groups | List of security groups to be allowed to connect to the DB instance | list | <list> |
no |
| skip_final_snapshot | Determines whether a final DB snapshot is created before the DB cluster is deleted | string | true |
no |
| snapshot_identifier | Specifies whether or not to create this cluster from a snapshot | string | `` | no |
| stage | Stage (e.g. prod, dev, staging) |
string | - | yes |
| storage_encrypted | Specifies whether the DB cluster is encrypted. The default is false for provisioned engine_mode and true for serverless engine_mode |
string | false |
no |
| subnets | List of VPC subnet IDs | list | - | yes |
| tags | Additional tags (e.g. map(BusinessUnit,XYZ) |
map | <map> |
no |
| vpc_id | VPC ID to create the cluster in (e.g. vpc-a22222ee) |
string | - | yes |
| zone_id | Route53 parent zone ID. If provided (not empty), the module will create sub-domain DNS records for the DB master and replicas | string | `` | no |
| Name | Description |
|---|---|
| arn | Amazon Resource Name (ARN) of cluster |
| cluster_name | Cluster Identifier |
| cluster_resource_id | The region-unique, immutable identifie of the cluster. |
| dbi_resource_ids | List of the region-unique, immutable identifiers for the DB instances in the cluster. |
| endpoint | The DNS address of the RDS instance |
| master_host | DB Master hostname |
| name | Database name |
| reader_endpoint | A read-only endpoint for the Aurora cluster, automatically load-balanced across replicas |
| replicas_host | Replicas hostname |
| user | Username for the master DB user |
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Check out these related projects.
- terraform-aws-rds - Terraform module to provision AWS RDS instances
- terraform-aws-rds-cloudwatch-sns-alarms - Terraform module that configures important RDS alerts using CloudWatch and sends them to an SNS topic
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Copyright © 2017-2019 Cloud Posse, LLC
See LICENSE for full details.
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