terraform-aws-rds

Terraform module to provision AWS RDS instances

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Introduction

The module will create:

DB instance (MySQL, Postgres, SQL Server, Oracle)
DB Option Group (will create a new one or you may use an existing)
DB Parameter Group
DB Subnet Group
DB Security Group
DNS Record in Route53 for the DB endpoint

Usage

IMPORTANT: We do not pin modules to versions in our examples because of the difficulty of keeping the versions in the documentation in sync with the latest released versions. We highly recommend that in your code you pin the version to the exact version you are using so that your infrastructure remains stable, and update versions in a systematic way so that they do not catch you by surprise.

Also, because of a bug in the Terraform registry (hashicorp/terraform#21417), the registry shows many of our inputs as required when in fact they are optional. The table below correctly indicates which inputs are required.

module "rds_instance" {
    source = "cloudposse/rds/aws"
    # Cloud Posse recommends pinning every module to a specific version
    # version = "x.x.x"
    namespace                   = "eg"
    stage                       = "prod"
    name                        = "app"
    dns_zone_id                 = "Z89FN1IW975KPE"
    host_name                   = "db"
    security_group_ids          = ["sg-xxxxxxxx"]
    ca_cert_identifier          = "rds-ca-2019"
    allowed_cidr_blocks         = ["XXX.XXX.XXX.XXX/32"]
    database_name               = "wordpress"
    database_user               = "admin"
    database_password           = "xxxxxxxxxxxx"
    database_port               = 3306
    multi_az                    = true
    storage_type                = "gp2"
    allocated_storage           = 100
    storage_encrypted           = true
    engine                      = "mysql"
    engine_version              = "5.7.17"
    major_engine_version        = "5.7"
    instance_class              = "db.t2.medium"
    db_parameter_group          = "mysql5.7"
    option_group_name           = "mysql-options"
    publicly_accessible         = false
    subnet_ids                  = ["sb-xxxxxxxxx", "sb-xxxxxxxxx"]
    vpc_id                      = "vpc-xxxxxxxx"
    snapshot_identifier         = "rds:production-2015-06-26-06-05"
    auto_minor_version_upgrade  = true
    allow_major_version_upgrade = false
    apply_immediately           = false
    maintenance_window          = "Mon:03:00-Mon:04:00"
    skip_final_snapshot         = false
    copy_tags_to_snapshot       = true
    backup_retention_period     = 7
    backup_window               = "22:00-03:00"

    db_parameter = [
      { name  = "myisam_sort_buffer_size"   value = "1048576" },
      { name  = "sort_buffer_size"          value = "2097152" }
    ]

    db_options = [
      { option_name = "MARIADB_AUDIT_PLUGIN"
          option_settings = [
            { name = "SERVER_AUDIT_EVENTS"           value = "CONNECT" },
            { name = "SERVER_AUDIT_FILE_ROTATIONS"   value = "37" }
          ]
      }
    ]
}

Makefile Targets

Available targets:

  help                                Help screen
  help/all                            Display help for all targets
  help/short                          This help short screen
  lint                                Lint terraform code

Requirements

Name	Version
terraform	>= 0.12.26
aws	>= 2.0
null	>= 2.0
template	>= 2.0

Providers

Name	Version
aws	>= 2.0

Inputs

Name	Description	Type	Default	Required
additional_tag_map	Additional tags for appending to tags_as_list_of_maps. Not added to `tags`.	`map(string)`	`{}`	no
allocated_storage	The allocated storage in GBs	`number`	n/a	yes
allow_major_version_upgrade	Allow major version upgrade	`bool`	`false`	no
allowed_cidr_blocks	The whitelisted CIDRs which to allow `ingress` traffic to the DB instance	`list(string)`	`[]`	no
apply_immediately	Specifies whether any database modifications are applied immediately, or during the next maintenance window	`bool`	`false`	no
associate_security_group_ids	The IDs of the existing security groups to associate with the DB instance	`list(string)`	`[]`	no
attributes	Additional attributes (e.g. `1`)	`list(string)`	`[]`	no
auto_minor_version_upgrade	Allow automated minor version upgrade (e.g. from Postgres 9.5.3 to Postgres 9.5.4)	`bool`	`true`	no
backup_retention_period	Backup retention period in days. Must be > 0 to enable backups	`number`	`0`	no
backup_window	When AWS can perform DB snapshots, can't overlap with maintenance window	`string`	`"22:00-03:00"`	no
ca_cert_identifier	The identifier of the CA certificate for the DB instance	`string`	`"rds-ca-2019"`	no
context	Single object for setting entire context at once. See description of individual variables for details. Leave string and numeric variables as `null` to use default value. Individual variable settings (non-null) override settings in context object, except for attributes, tags, and additional_tag_map, which are merged.	object({ enabled = bool namespace = string environment = string stage = string name = string delimiter = string attributes = list(string) tags = map(string) additional_tag_map = map(string) regex_replace_chars = string label_order = list(string) id_length_limit = number })	{ "additional_tag_map": {}, "attributes": [], "delimiter": null, "enabled": true, "environment": null, "id_length_limit": null, "label_order": [], "name": null, "namespace": null, "regex_replace_chars": null, "stage": null, "tags": {} }	no
copy_tags_to_snapshot	Copy tags from DB to a snapshot	`bool`	`true`	no
database_name	The name of the database to create when the DB instance is created	`string`	n/a	yes
database_password	(Required unless a snapshot_identifier or replicate_source_db is provided) Password for the master DB user	`string`	`""`	no
database_port	Database port (_e.g._ `3306` for `MySQL`). Used in the DB Security Group to allow access to the DB instance from the provided `security_group_ids`	`number`	n/a	yes
database_user	(Required unless a `snapshot_identifier` or `replicate_source_db` is provided) Username for the master DB user	`string`	`""`	no
db_options	A list of DB options to apply with an option group. Depends on DB engine	list(object({ db_security_group_memberships = list(string) option_name = string port = number version = string vpc_security_group_memberships = list(string) option_settings = list(object({ name = string value = string })) }))	`[]`	no
db_parameter	A list of DB parameters to apply. Note that parameters may differ from a DB family to another	list(object({ apply_method = string name = string value = string }))	`[]`	no
db_parameter_group	The DB parameter group family name. The value depends on DB engine used. See DBParameterGroupFamily for instructions on how to retrieve applicable value.	`string`	n/a	yes
deletion_protection	Set to true to enable deletion protection on the RDS instance	`bool`	`false`	no
delimiter	Delimiter to be used between `namespace`, `environment`, `stage`, `name` and `attributes`. Defaults to `-` (hyphen). Set to `""` to use no delimiter at all.	`string`	`null`	no
dns_zone_id	The ID of the DNS Zone in Route53 where a new DNS record will be created for the DB host name	`string`	`""`	no
enabled	Set to false to prevent the module from creating any resources	`bool`	`null`	no
enabled_cloudwatch_logs_exports	List of log types to enable for exporting to CloudWatch logs. If omitted, no logs will be exported. Valid values (depending on engine): alert, audit, error, general, listener, slowquery, trace, postgresql (PostgreSQL), upgrade (PostgreSQL).	`list(string)`	`[]`	no
engine	Database engine type	`string`	n/a	yes
engine_version	Database engine version, depends on engine type	`string`	n/a	yes
environment	Environment, e.g. 'uw2', 'us-west-2', OR 'prod', 'staging', 'dev', 'UAT'	`string`	`null`	no
final_snapshot_identifier	Final snapshot identifier e.g.: some-db-final-snapshot-2019-06-26-06-05	`string`	`""`	no
host_name	The DB host name created in Route53	`string`	`"db"`	no
iam_database_authentication_enabled	Specifies whether or mappings of AWS Identity and Access Management (IAM) accounts to database accounts is enabled	`bool`	`false`	no
id_length_limit	Limit `id` to this many characters. Set to `0` for unlimited length. Set to `null` for default, which is `0`. Does not affect `id_full`.	`number`	`null`	no
instance_class	Class of RDS instance	`string`	n/a	yes
iops	The amount of provisioned IOPS. Setting this implies a storage_type of 'io1'. Default is 0 if rds storage type is not 'io1'	`number`	`0`	no
kms_key_arn	The ARN of the existing KMS key to encrypt storage	`string`	`""`	no
label_order	The naming order of the id output and Name tag. Defaults to ["namespace", "environment", "stage", "name", "attributes"]. You can omit any of the 5 elements, but at least one must be present.	`list(string)`	`null`	no
license_model	License model for this DB. Optional, but required for some DB Engines. Valid values: license-included \| bring-your-own-license \| general-public-license	`string`	`""`	no
maintenance_window	The window to perform maintenance in. Syntax: 'ddd:hh24:mi-ddd:hh24:mi' UTC	`string`	`"Mon:03:00-Mon:04:00"`	no
major_engine_version	Database MAJOR engine version, depends on engine type	`string`	`""`	no
max_allocated_storage	The upper limit to which RDS can automatically scale the storage in GBs	`number`	`0`	no
monitoring_interval	The interval, in seconds, between points when Enhanced Monitoring metrics are collected for the DB instance. To disable collecting Enhanced Monitoring metrics, specify 0. Valid Values are 0, 1, 5, 10, 15, 30, 60.	`string`	`"0"`	no
monitoring_role_arn	The ARN for the IAM role that permits RDS to send enhanced monitoring metrics to CloudWatch Logs	`string`	`null`	no
multi_az	Set to true if multi AZ deployment must be supported	`bool`	`false`	no
name	Solution name, e.g. 'app' or 'jenkins'	`string`	`null`	no
namespace	Namespace, which could be your organization name or abbreviation, e.g. 'eg' or 'cp'	`string`	`null`	no
option_group_name	Name of the DB option group to associate	`string`	`""`	no
parameter_group_name	Name of the DB parameter group to associate	`string`	`""`	no
performance_insights_enabled	Specifies whether Performance Insights are enabled.	`bool`	`false`	no
performance_insights_kms_key_id	The ARN for the KMS key to encrypt Performance Insights data. Once KMS key is set, it can never be changed.	`string`	`null`	no
performance_insights_retention_period	The amount of time in days to retain Performance Insights data. Either 7 (7 days) or 731 (2 years).	`number`	`7`	no
publicly_accessible	Determines if database can be publicly available (NOT recommended)	`bool`	`false`	no
regex_replace_chars	Regex to replace chars with empty string in `namespace`, `environment`, `stage` and `name`. If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits.	`string`	`null`	no
security_group_ids	The IDs of the security groups from which to allow `ingress` traffic to the DB instance	`list(string)`	`[]`	no
skip_final_snapshot	If true (default), no snapshot will be made before deleting DB	`bool`	`true`	no
snapshot_identifier	Snapshot identifier e.g: rds:production-2019-06-26-06-05. If specified, the module create cluster from the snapshot	`string`	`""`	no
stage	Stage, e.g. 'prod', 'staging', 'dev', OR 'source', 'build', 'test', 'deploy', 'release'	`string`	`null`	no
storage_encrypted	(Optional) Specifies whether the DB instance is encrypted. The default is false if not specified	`bool`	`false`	no
storage_type	One of 'standard' (magnetic), 'gp2' (general purpose SSD), or 'io1' (provisioned IOPS SSD)	`string`	`"standard"`	no
subnet_ids	List of subnets for the DB	`list(string)`	n/a	yes
tags	Additional tags (e.g. `map('BusinessUnit','XYZ')`	`map(string)`	`{}`	no
vpc_id	VPC ID the DB instance will be created in	`string`	n/a	yes

Outputs

Name	Description
hostname	DNS host name of the instance
instance_address	Address of the instance
instance_arn	ARN of the instance
instance_endpoint	DNS Endpoint of the instance
instance_id	ID of the instance
option_group_id	ID of the Option Group
parameter_group_id	ID of the Parameter Group
security_group_id	ID of the Security Group
subnet_group_id	ID of the Subnet Group

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Related Projects

Check out these related projects.

terraform-aws-rds-cluster - Terraform module to provision an RDS Aurora cluster for MySQL or Postgres
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

License

See LICENSE for full details.

Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

  https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.

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All other trademarks referenced herein are the property of their respective owners.

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Contributors

Erik Osterman	Andriy Knysh	Sergey Vasilyev	Valeriy	Konstantin B	drmikecrowe	Oscar Sullivan	Federico Márquez

Name		Name	Last commit message	Last commit date
Latest commit History 49 Commits
.github		.github
docs		docs
examples/complete		examples/complete
test		test
.gitignore		.gitignore
LICENSE		LICENSE
Makefile		Makefile
README.md		README.md
README.yaml		README.yaml
context.tf		context.tf
main.tf		main.tf
outputs.tf		outputs.tf
variables.tf		variables.tf
versions.tf		versions.tf

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terraform-aws-rds

Introduction

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Outputs

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Help

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