Module: cloudtrail
Terraform module to provision an AWS CloudTrail.
The module accepts an encrypted S3 bucket with versioning to store CloudTrail logs.
The bucket could be from the same AWS account or from a different account.
This is useful if an organization uses a number of separate AWS accounts to isolate the Audit environment from other environments (production, staging, development).
In this case, you create CloudTrail in the production environment (production AWS account), while the S3 bucket to store the CloudTrail logs is created in the Audit AWS account, restricting access to the logs only to the users/groups from the Audit account.
Usage
module "cloudtrail" {
source = "cloudposse/cloudtrail/aws"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"
namespace = "eg"
stage = "dev"
name = "cluster"
enable_log_file_validation = true
include_global_service_events = true
is_multi_region_trail = false
enable_logging = true
s3_bucket_name = "my-cloudtrail-logs-bucket"
}
NOTE: To create an S3 bucket for CloudTrail logs, use terraform-aws-cloudtrail-s3-bucket module. It creates an S3 bucket and an IAM policy to allow CloudTrail logs.
module "cloudtrail" {
source = "cloudposse/cloudtrail/aws"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"
namespace = "eg"
stage = "dev"
name = "cluster"
enable_log_file_validation = true
include_global_service_events = true
is_multi_region_trail = false
enable_logging = true
s3_bucket_name = module.cloudtrail_s3_bucket.bucket_id
}
module "cloudtrail_s3_bucket" {
source = "cloudposse/cloudtrail-s3-bucket/aws"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"
namespace = "eg"
stage = "dev"
name = "cluster"
}
For a complete example, see examples/complete.
Requirements
Name | Version |
---|---|
terraform | >= 1.3.0 |
aws | >= 3.0 |
Providers
Name | Version |
---|---|
aws | >= 3.0 |
Modules
Name | Source | Version |
---|---|---|
this | cloudposse/label/null | 0.25.0 |
Resources
Name | Type |
---|---|
aws_cloudtrail.default | resource |
Inputs
Name | Description | Type | Default | Required |
---|---|---|---|---|
additional_tag_map | 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. | map(string) | {} | no |
advanced_event_selector | Specifies an advanced event selector for enabling data event logging. See: https://www.terraform.io/docs/providers/aws/r/cloudtrail.html for details on this variable |
| [] | no |
attributes | 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. | list(string) | [] | no |
cloud_watch_logs_group_arn | Specifies a log group name using an Amazon Resource Name (ARN), that represents the log group to which CloudTrail logs will be delivered | string | "" | no |
cloud_watch_logs_role_arn | Specifies the role for the CloudWatch Logs endpoint to assume to write to a user’s log group | string | "" | 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. | any |
| no |
delimiter | Delimiter to be used between ID elements. Defaults to - (hyphen). Set to "" to use no delimiter at all. | string | null | no |
descriptor_formats | 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 beidentical to how they appear in id .Default is {} (descriptors output will be empty). | any | {} | no |
enable_log_file_validation | Specifies whether log file integrity validation is enabled. Creates signed digest for validated contents of logs | bool | true | no |
enable_logging | Enable logging for the trail | bool | true | no |
enabled | Set to false to prevent the module from creating any resources | bool | null | no |
environment | ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT' | string | null | no |
event_selector | Specifies an event selector for enabling data event logging. See: https://www.terraform.io/docs/providers/aws/r/cloudtrail.html for details on this variable |
| [] | no |
id_length_limit | 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 . | number | null | no |
include_global_service_events | Specifies whether the trail is publishing events from global services such as IAM to the log files | bool | false | no |
insight_selector | Specifies an insight selector for type of insights to log on a trail |
| [] | no |
is_multi_region_trail | Specifies whether the trail is created in the current region or in all regions | bool | true | no |
is_organization_trail | The trail is an AWS Organizations trail | bool | false | no |
kms_key_arn | Specifies the KMS key ARN to use to encrypt the logs delivered by CloudTrail | string | "" | no |
label_key_case | 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 . | string | null | no |
label_order | 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. | list(string) | null | no |
label_value_case | 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 . | string | null | no |
labels_as_tags | 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 bechanged in later chained modules. Attempts to change it will be silently ignored. | set(string) |
| no |
name | 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. | string | null | no |
namespace | ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique | string | null | no |
regex_replace_chars | 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. | string | null | no |
s3_bucket_name | S3 bucket name for CloudTrail logs | string | n/a | yes |
s3_key_prefix | Prefix for S3 bucket used by Cloudtrail to store logs | string | null | no |
sns_topic_name | Specifies the name of the Amazon SNS topic defined for notification of log file delivery | string | null | no |
stage | ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release' | string | null | no |
tags | Additional tags (e.g. {'BusinessUnit': 'XYZ'} ).Neither the tag keys nor the tag values will be modified by this module. | map(string) | {} | no |
tenant | ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for | string | null | no |
Outputs
Name | Description |
---|---|
cloudtrail_arn | The Amazon Resource Name of the trail |
cloudtrail_home_region | The region in which the trail was created |
cloudtrail_id | The ID of the trail. (Name for provider < v5, ARN for provider >= v5). |