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Terraform module to provision AWS RDS instances


This project is part of our comprehensive "SweetOps" approach towards DevOps.

Terraform Open Source Modules

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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: The master branch is used in source just as an example. In your code, do not pin to master because there may be breaking changes between releases. Instead pin to the release tag (e.g. ?ref=tags/x.y.z) of one of our latest releases.

module "rds_instance" {
    source                      = "git::https://github.com/cloudposse/terraform-aws-rds.git?ref=master"
    namespace                   = "eg"
    stage                       = "prod"
    name                        = "app"
    dns_zone_id                 = "Z89FN1IW975KPE"
    host_name                   = "db"
    security_group_ids          = ["sg-xxxxxxxx"]
    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

Inputs

Name Description Type Default Required
allocated_storage The allocated storage in GBs number - 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) <list> 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) <list> no
attributes Additional attributes (e.g. 1) list(string) <list> 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
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 - 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 - 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 object <list> no
db_parameter A list of DB parameters to apply. Note that parameters may differ from a DB family to another object <list> no
db_parameter_group Parameter group, depends on DB engine used string - yes
deletion_protection Set to true to enable deletion protection on the RDS instance bool false no
delimiter Delimiter to be used between name, namespace, stage and attributes string - 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 true 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) <list> no
engine Database engine type string - yes
engine_version Database engine version, depends on engine type string - yes
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
instance_class Class of RDS instance string - 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
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
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
multi_az Set to true if multi AZ deployment must be supported bool false no
name The Name of the application or solution (e.g. bastion or portal) string - yes
namespace Namespace (e.g. eg or cp) string `` 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
security_group_ids The IDs of the security groups from which to allow ingress traffic to the DB instance list(string) <list> 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, dev, staging) string `` 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) - yes
tags Additional tags (e.g. { BusinessUnit : ABC }) map(string) <map> no
vpc_id VPC ID the DB instance will be created in string - 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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In general, PRs are welcome. We follow the typical "fork-and-pull" Git workflow.

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  4. Push your work back up to your fork
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Copyright

Copyright © 2017-2019 Cloud Posse, LLC

License

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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Contributors

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

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Terraform module to provision AWS RDS instances

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