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Module: config

This module enables AWS Config and optionally sets up an SNS topic to receive notifications of its findings.

Usage

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 "example" {
source = "cloudposse/config/aws"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"

create_sns_topic = true
create_iam_role = true

managed_rules = {
account-part-of-organizations = {
description = "Checks whether AWS account is part of AWS Organizations. The rule is NON_COMPLIANT if an AWS account is not part of AWS Organizations or AWS Organizations master account ID does not match rule parameter MasterAccountId.",
identifier = "ACCOUNT_PART_OF_ORGANIZATIONS",
trigger_type = "PERIODIC"
enabled = true
}
}
}

Examples

Here is an example of using this module:

Requirements

NameVersion
terraform>= 1.0
aws>= 5.38.0
http>= 3.4.1

Providers

NameVersion
aws>= 5.38.0

Modules

NameSourceVersion
aws_config_aggregator_labelcloudposse/label/null0.25.0
aws_config_findings_labelcloudposse/label/null0.25.0
aws_config_labelcloudposse/label/null0.25.0
iam_rolecloudposse/iam-role/aws0.19.0
iam_role_organization_aggregatorcloudposse/iam-role/aws0.19.0
sns_topiccloudposse/sns-topic/aws0.20.1
thiscloudposse/label/null0.25.0

Resources

NameType
aws_config_aggregate_authorization.centralresource
aws_config_aggregate_authorization.childresource
aws_config_config_rule.rulesresource
aws_config_configuration_aggregator.thisresource
aws_config_configuration_recorder.recorderresource
aws_config_configuration_recorder_status.recorder_statusresource
aws_config_delivery_channel.channelresource
aws_iam_role_policy_attachment.config_policy_attachmentresource
aws_iam_role_policy_attachment.organization_config_policy_attachmentresource
aws_caller_identity.thisdata source
aws_iam_policy.aws_config_built_in_roledata source
aws_iam_policy.aws_config_organization_roledata source
aws_iam_policy_document.config_s3_policydata source
aws_iam_policy_document.config_sns_policydata source
aws_partition.currentdata source
aws_region.thisdata source

Inputs

NameDescriptionTypeDefaultRequired
additional_tag_mapAdditional key-value pairs to add to each map in tags_as_list_of_maps. Not added to tags or id.
This is for some rare cases where resources want additional configuration of tags
and therefore take a list of maps with tag key, value, and additional configuration.
map(string){}no
allowed_aws_services_for_sns_publishedAWS services that will have permission to publish to SNS topic. Used when no external JSON policy is usedlist(string)[]no
allowed_iam_arns_for_sns_publishIAM role/user ARNs that will have permission to publish to SNS topic. Used when no external json policy is used.list(string)[]no
attributesID element. Additional attributes (e.g. workers or cluster) to add to id,
in the order they appear in the list. New attributes are appended to the
end of the list. The elements of the list are joined by the delimiter
and treated as a single ID element.
list(string)[]no
central_resource_collector_accountThe account ID of a central account that will aggregate AWS Config from other accountsstringnullno
child_resource_collector_accountsThe account IDs of other accounts that will send their AWS Configuration to this accountset(string)nullno
contextSingle 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.
any
{
"additional_tag_map": {},
"attributes": [],
"delimiter": null,
"descriptor_formats": {},
"enabled": true,
"environment": null,
"id_length_limit": null,
"label_key_case": null,
"label_order": [],
"label_value_case": null,
"labels_as_tags": [
"unset"
],
"name": null,
"namespace": null,
"regex_replace_chars": null,
"stage": null,
"tags": {},
"tenant": null
}
no
create_iam_roleFlag to indicate whether an IAM Role should be created to grant the proper permissions for AWS Configboolfalseno
create_organization_aggregator_iam_roleFlag to indicate whether an IAM Role should be created to grant the proper permissions for AWS Config to send logs from organization accountsboolfalseno
create_sns_topicFlag to indicate whether an SNS topic should be created for notifications
If you want to send findings to a new SNS topic, set this to true and provide a valid configuration for subscribers
boolfalseno
delimiterDelimiter to be used between ID elements.
Defaults to - (hyphen). Set to "" to use no delimiter at all.
stringnullno
descriptor_formatsDescribe additional descriptors to be output in the descriptors output map.
Map of maps. Keys are names of descriptors. Values are maps of the form
{<br/> format = string<br/> labels = list(string)<br/>}
(Type is any so the map values can later be enhanced to provide additional options.)
format is a Terraform format string to be passed to the format() function.
labels is a list of labels, in order, to pass to format() function.
Label values will be normalized before being passed to format() so they will be
identical to how they appear in id.
Default is {} (descriptors output will be empty).
any{}no
disabled_aggregation_regionsA list of regions where config aggregation is disabledlist(string)
[
"ap-northeast-3"
]
no
enabledSet to false to prevent the module from creating any resourcesboolnullno
environmentID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT'stringnullno
findings_notification_arnThe ARN for an SNS topic to send findings notifications to. This is only used if create_sns_topic is false.
If you want to send findings to an existing SNS topic, set the value of this to the ARN of the existing topic and set
create_sns_topic to false.
stringnullno
force_destroyA boolean that indicates all objects should be deleted from the bucket so that the bucket can be destroyed without error. These objects are not recoverableboolfalseno
global_resource_collector_regionThe region that collects AWS Config data for global resources such as IAMstringn/ayes
iam_role_arnThe ARN for an IAM Role AWS Config uses to make read or write requests to the delivery channel and to describe the
AWS resources associated with the account. This is only used if create_iam_role is false.

If you want to use an existing IAM Role, set the value of this to the ARN of the existing topic and set
create_iam_role to false.

See the AWS Docs for further information:
http://docs.aws.amazon.com/config/latest/developerguide/iamrole-permissions.html
stringnullno
iam_role_organization_aggregator_arnThe ARN for an IAM Role that AWS Config uses for the organization aggregator that fetches AWS config data from AWS accounts.
This is only used if create_organization_aggregator_iam_role is false.

If you want to use an existing IAM Role, set the value of this to the ARN of the existing role and set
create_organization_aggregator_iam_role to false.

See the AWS docs for further information:
http://docs.aws.amazon.com/config/latest/developerguide/iamrole-permissions.html
stringnullno
id_length_limitLimit id to this many characters (minimum 6).
Set to 0 for unlimited length.
Set to null for keep the existing setting, which defaults to 0.
Does not affect id_full.
numbernullno
is_organization_aggregatorThe aggregator is an AWS Organizations aggregatorboolfalseno
label_key_caseControls the letter case of the tags keys (label names) for tags generated by this module.
Does not affect keys of tags passed in via the tags input.
Possible values: lower, title, upper.
Default value: title.
stringnullno
label_orderThe order in which the labels (ID elements) appear in the id.
Defaults to ["namespace", "environment", "stage", "name", "attributes"].
You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present.
list(string)nullno
label_value_caseControls the letter case of ID elements (labels) as included in id,
set as tag values, and output by this module individually.
Does not affect values of tags passed in via the tags input.
Possible values: lower, title, upper and none (no transformation).
Set this to title and set delimiter to "" to yield Pascal Case IDs.
Default value: lower.
stringnullno
labels_as_tagsSet of labels (ID elements) to include as tags in the tags output.
Default is to include all labels.
Tags with empty values will not be included in the tags output.
Set to [] to suppress all generated tags.
Notes:
The value of the name tag, if included, will be the id, not the name.
Unlike other null-label inputs, the initial setting of labels_as_tags cannot be
changed in later chained modules. Attempts to change it will be silently ignored.
set(string)
[
"default"
]
no
managed_rulesA list of AWS Managed Rules that should be enabled on the account.

See the following for a list of possible rules to enable:
https://docs.aws.amazon.com/config/latest/developerguide/managed-rules-by-aws-config.html
map(object({
description = string
identifier = string
input_parameters = any
tags = map(string)
enabled = bool
}))
{}no
nameID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.
This is the only ID element not also included as a tag.
The "name" tag is set to the full id string. There is no tag with the value of the name input.
stringnullno
namespaceID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally uniquestringnullno
recording_modeThe mode for AWS Config to record configuration changes.

recording_frequency:
The frequency with which AWS Config records configuration changes (service defaults to CONTINUOUS).
- CONTINUOUS
- DAILY

You can also override the recording frequency for specific resource types.
recording_mode_override:
description:
A description for the override.
recording_frequency:
The frequency with which AWS Config records configuration changes for the specified resource types.
- CONTINUOUS
- DAILY
resource_types:
A list of resource types for which AWS Config records configuration changes. For example, AWS::EC2::Instance.

See the following for more information:
https://docs.aws.amazon.com/config/latest/developerguide/stop-start-recorder.html

/
recording_mode = {
recording_frequency = "DAILY"
recording_mode_override = {
description = "Override for specific resource types"
recording_frequency = "CONTINUOUS"
resource_types = ["AWS::EC2::Instance"]
}
}
/
object({
recording_frequency = string
recording_mode_override = optional(object({
description = string
recording_frequency = string
resource_types = list(string)
}))
})
nullno
regex_replace_charsTerraform regular expression (regex) string.
Characters matching the regex will be removed from the ID elements.
If not set, "/[^a-zA-Z0-9-]/" is used to remove all characters other than hyphens, letters and digits.
stringnullno
s3_bucket_arnThe ARN of the S3 bucket used to store the configuration historystringn/ayes
s3_bucket_idThe id (name) of the S3 bucket used to store the configuration historystringn/ayes
s3_key_prefixThe prefix for AWS Config objects stored in the the S3 bucket. If this variable is set to null, the default, no
prefix will be used.

Examples:

with prefix: {S3_BUCKET NAME}:/{S3_KEY_PREFIX}/AWSLogs/{ACCOUNT_ID}/Config/.
without prefix: {S3_BUCKET NAME}:/AWSLogs/{ACCOUNT_ID}/Config/
.
stringnullno
sns_encryption_key_idThe ID of an AWS-managed customer master key (CMK) for Amazon SNS or a custom CMK.string""no
sqs_queue_kms_master_key_idThe ID of an AWS-managed customer master key (CMK) for Amazon SQS Queue or a custom CMKstring""no
stageID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'stringnullno
subscribersA map of subscription configurations for SNS topics

For more information, see:
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/sns_topic_subscription#argument-reference

protocol:
The protocol to use. The possible values for this are: sqs, sms, lambda, application. (http or https are partially
supported, see link) (email is an option but is unsupported in terraform, see link).
endpoint:
The endpoint to send data to, the contents will vary with the protocol. (see link for more information)
endpoint_auto_confirms (Optional):
Boolean indicating whether the end point is capable of auto confirming subscription e.g., PagerDuty. Default is
false
raw_message_delivery (Optional):
Boolean indicating whether or not to enable raw message delivery (the original message is directly passed, not wrapped in JSON with the original message in the message property). Default is false.
map(any){}no
tagsAdditional tags (e.g. {'BusinessUnit': 'XYZ'}).
Neither the tag keys nor the tag values will be modified by this module.
map(string){}no
tenantID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is forstringnullno

Outputs

NameDescription
aws_config_configuration_recorder_idThe ID of the AWS Config Recorder
iam_roleIAM Role used to make read or write requests to the delivery channel and to describe the AWS resources associated with
the account.
iam_role_organization_aggregatorIAM Role used to make read or write requests to the delivery channel and to describe the AWS resources associated with
the account.
sns_topicSNS topic
sns_topic_subscriptionsSNS topic subscriptions
storage_bucket_arnBucket ARN
storage_bucket_idBucket Name (aka ID)