Module: inspector

This module enables AWS Inspector in one region of one account and optionally enables various rules packages provided by AWS.

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 "inspector" {
  source  = "cloudposse/inspector/aws"
  # Cloud Posse recommends pinning every module to a specific version
  # version     = "x.x.x"
  
  create_iam_role = true
  enabled_rules   = ["cis"]
}

Examples

Here is an example of using this module:

• examples/complete - complete example of using this module

Variables

Required Variables

enabled_rules (list(string)) required

A list of AWS Inspector rules that should run on a periodic basis.

Valid values are cve, cis, nr, sbp which map to the appropriate Inspector rule arns by region.

Optional Variables

assessment_duration (string) optional

The max duration of the Inspector assessment run in seconds

Default value: "3600"

assessment_event_subscription optional

Configures sending notifications about a specified assessment template event to a designated SNS topic

Type:

map(object({
event     = string
topic_arn = string
}))

Default value: { }

create_iam_role (bool) optional

Flag to indicate whether an IAM Role should be created to grant the proper permissions for AWS Config

Default value: false

event_rule_description (string) optional

A description of the CloudWatch event rule

Default value: "Trigger an AWS Inspector Assessment"

iam_role_arn (string) optional

The 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.

Default value: null

schedule_expression (string) optional

An AWS Schedule Expression to indicate how often the scheduled event shoud run.

For more information see:
https://docs.aws.amazon.com/AmazonCloudWatch/latest/events/ScheduledEvents.html

Default value: "rate(7 days)"

Context Variables

The following variables are defined in the context.tf file of this module and part of the terraform-null-label pattern.

additional_tag_map (map(string)) optional

Additional 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.

Required: No

Default value: { }

attributes (list(string)) optional

ID 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.

Required: No

Default value: [ ]

context (any) optional

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.

Required: No

Default value:

{
  "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
}

delimiter (string) optional

Delimiter to be used between ID elements.
Defaults to - (hyphen). Set to "" to use no delimiter at all.

Required: No

Default value: null

descriptor_formats (any) optional

Describe 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).

Required: No

Default value: { }

enabled (bool) optional

Set to false to prevent the module from creating any resources
Required: No

Default value: null

environment (string) optional

ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT'
Required: No

Default value: null

id_length_limit (number) optional

Limit 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.

Required: No

Default value: null

label_key_case (string) optional

Controls 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.

Required: No

Default value: null

label_order (list(string)) optional

The 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.

Required: No

Default value: null

label_value_case (string) optional

Controls 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.

Required: No

Default value: null

labels_as_tags (set(string)) optional

Set 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.

Required: No

Default value:

[
  "default"
]

name (string) optional

ID 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.

Required: No

Default value: null

namespace (string) optional

ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique
Required: No

Default value: null

regex_replace_chars (string) optional

Terraform 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.

Required: No

Default value: null

stage (string) optional

ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'
Required: No

Default value: null

tags (map(string)) optional

Additional tags (e.g. {'BusinessUnit': 'XYZ'}).
Neither the tag keys nor the tag values will be modified by this module.

Required: No

Default value: { }

tenant (string) optional

ID element (Rarely used, not included by default). A customer identifier, indicating who this instance of a resource is for
Required: No

Default value: null

Outputs

aws_cloudwatch_event_rule

The AWS Inspector event rule

aws_cloudwatch_event_target

The AWS Inspector event target

aws_inspector_assessment_template

The AWS Inspector assessment template

inspector_assessment_target

The AWS Inspector assessment target

Dependencies

Requirements

• terraform, version: >= 0.13.0
• aws, version: >= 4.27

Providers

• aws, version: >= 4.27

Modules

Name	Version	Source	Description
iam_role	0.16.2	cloudposse/iam-role/aws	----------------------------------------------------------------------------------------------------------------------- Optionally create an IAM Role -----------------------------------------------------------------------------------------------------------------------
inspector_assessment_target_label	0.25.0	cloudposse/label/null	----------------------------------------------------------------------------------------------------------------------- Setup AWS Inspector -----------------------------------------------------------------------------------------------------------------------
inspector_assessment_template_label	0.25.0	cloudposse/label/null	n/a
inspector_schedule_label	0.25.0	cloudposse/label/null	----------------------------------------------------------------------------------------------------------------------- Create a scheduled event to run inspector -----------------------------------------------------------------------------------------------------------------------
this	0.25.0	cloudposse/label/null	n/a

Resources

The following resources are used by this module:

• aws_cloudwatch_event_rule.schedule (resource)
• aws_cloudwatch_event_target.target (resource)
• aws_inspector_assessment_target.target (resource)
• aws_inspector_assessment_template.assessment (resource)

Data Sources

The following data sources are used by this module:

• aws_iam_policy_document.start_assessment_policy (data source)
• aws_region.current (data source)