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dgoscn / terraform-aws-documentdb-cluster

Terraform module to provision a DocumentDB cluster on AWS

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Cloud Posse

Terraform module to provision an Amazon DocumentDB cluster.

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

Terraform Open Source Modules

It's 100% Open Source and licensed under the APACHE2.

We literally have hundreds of terraform modules that are Open Source and well-maintained. Check them out!

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.

For a complete example, see examples/complete.

For automated tests of the complete example using bats and Terratest (which tests and deploys the example on AWS), see test.

module "documentdb_cluster" {
  source = "cloudposse/documentdb-cluster/aws"
  # Cloud Posse recommends pinning every module to a specific version
  # version = "x.x.x"
  namespace               = "eg"
  stage                   = "testing"
  name                    = "docdb"
  cluster_size            = 3
  master_username         = "admin1"
  master_password         = "Test123456789"
  instance_class          = "db.r4.large"
  vpc_id                  = "vpc-xxxxxxxx"
  subnet_ids              = ["subnet-xxxxxxxx", "subnet-yyyyyyyy"]
  allowed_security_groups = ["sg-xxxxxxxx"]
  zone_id                 = "Zxxxxxxxx"
}

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
local >= 1.3

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
allowed_cidr_blocks List of CIDR blocks to be allowed to connect to the DocumentDB cluster list(string) [] no
allowed_security_groups List of existing Security Groups to be allowed to connect to the DocumentDB cluster list(string) [] no
apply_immediately Specifies whether any cluster modifications are applied immediately, or during the next maintenance window bool true no
attributes Additional attributes (e.g. 1) list(string) [] no
auto_minor_version_upgrade Specifies whether any minor engine upgrades will be applied automatically to the DB instance during the maintenance window or not bool true 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 DocumentDB cluster parameter group. For more details, see https://docs.aws.amazon.com/documentdb/latest/developerguide/db-cluster-parameter-group-create.html string "docdb3.6" no
cluster_parameters List of DB parameters to apply 
list(object({
    apply_method = string
    name         = string
    value        = string
  }))
 [] no
cluster_size Number of DB instances to create in the cluster number 3 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
db_port DocumentDB port number 27017 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
enabled Set to false to prevent the module from creating any resources bool null no
enabled_cloudwatch_logs_exports List of log types to export to cloudwatch. The following log types are supported: audit, error, general, slowquery list(string) [] no
engine The name of the database engine to be used for this DB cluster. Defaults to docdb. Valid values: docdb string "docdb" no
engine_version The version number of the database engine to use string "" no
environment Environment, e.g. 'uw2', 'us-west-2', OR 'prod', 'staging', 'dev', 'UAT' string null 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 The instance class to use. For more details, see https://docs.aws.amazon.com/documentdb/latest/developerguide/db-instance-classes.html#db-instance-class-specs string "db.r4.large" no
kms_key_id The ARN for the KMS encryption key. When specifying kms_key_id, storage_encrypted needs to be set to true 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
master_password (Required unless a snapshot_identifier is provided) Password for the master DB user. Note that this may show up in logs, and it will be stored in the state file. Please refer to the DocumentDB Naming Constraints string "" no
master_username (Required unless a snapshot_identifier is provided) Username for the master DB user string "admin1" 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
preferred_backup_window Daily time range during which the backups happen string "07:00-09:00" no
preferred_maintenance_window The window to perform maintenance in. Syntax: ddd:hh24:mi-ddd:hh24:mi. string "Mon:22:00-Mon:23:00" 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
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
retention_period Number of days to retain backups for number 5 no
skip_final_snapshot Determines whether a final DB snapshot is created before the DB cluster is deleted bool true no
snapshot_identifier Specifies whether or not to create this cluster from a snapshot. You can use either the name or ARN when specifying a DB cluster snapshot, or the ARN when specifying a DB snapshot string "" no
stage Stage, e.g. 'prod', 'staging', 'dev', OR 'source', 'build', 'test', 'deploy', 'release' string null no
storage_encrypted Specifies whether the DB cluster is encrypted bool true no
subnet_ids List of VPC subnet IDs to place DocumentDB instances in list(string) n/a yes
tags Additional tags (e.g. map('BusinessUnit','XYZ') map(string) {} no
vpc_id VPC ID to create the cluster in (e.g. vpc-a22222ee) string n/a yes
zone_id Route53 parent zone ID. If provided (not empty), the module will create sub-domain DNS records for the DocumentDB master and replicas string "" no

Outputs

Name Description
arn Amazon Resource Name (ARN) of the cluster
cluster_name Cluster Identifier
endpoint Endpoint of the DocumentDB cluster
master_host DB master hostname
master_username Username for the master DB user
reader_endpoint A read-only endpoint of the DocumentDB cluster, automatically load-balanced across replicas
replicas_host DB replicas hostname
security_group_arn ARN of the DocumentDB cluster Security Group
security_group_id ID of the DocumentDB cluster Security Group
security_group_name Name of the DocumentDB cluster Security Group

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Copyright

Copyright © 2017-2020 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
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Contributors

Erik Osterman
Erik Osterman		 Andriy Knysh
Andriy Knysh		 Igor Rodionov
Igor Rodionov

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Terraform module to provision a DocumentDB cluster on AWS

https://cloudposse.com/accelerate

License:Apache License 2.0

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