Terraform module to provision an S3 bucket with built in policy to allow CloudTrail logs.
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.
The module supports the following:
- Forced server-side encryption at rest for the S3 bucket
- S3 bucket versioning to easily recover from both unintended user actions and application failures
- S3 bucket is protected from deletion if it's not empty (force_destroy set to
false)
This project is part of our comprehensive "SweetOps" approach towards DevOps.
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!
Security scanning is graciously provided by Bridgecrew. Bridgecrew is the leading fully hosted, cloud-native solution providing continuous Terraform security and compliance.
| Benchmark | Description |
|---|---|
| Infrastructure Security Compliance | |
| Center for Internet Security, KUBERNETES Compliance | |
| Center for Internet Security, AWS Compliance | |
| Center for Internet Security, AZURE Compliance | |
| Payment Card Industry Data Security Standards Compliance | |
| National Institute of Standards and Technology Compliance | |
| Information Security Management System, ISO/IEC 27001 Compliance | |
| Service Organization Control 2 Compliance | |
| Center for Internet Security, GCP Compliance | |
| Health Insurance Portability and Accountability Compliance |
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.
module "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 = "prod"
name = "cluster"
}Available targets:
help Help screen
help/all Display help for all targets
help/short This help short screen
lint Lint terraform code
| Name | Version |
|---|---|
| terraform | >= 0.13.0 |
| aws | >= 3.0 |
| Name | Version |
|---|---|
| aws | >= 3.0 |
| Name | Source | Version |
|---|---|---|
| access_log_label | cloudposse/label/null | 0.25.0 |
| s3_access_log_bucket | cloudposse/s3-log-storage/aws | 0.26.0 |
| s3_bucket | cloudposse/s3-log-storage/aws | 0.26.0 |
| this | cloudposse/label/null | 0.25.0 |
| Name | Type |
|---|---|
| aws_iam_policy_document.default | data source |
| aws_partition.current | data source |
| Name | Description | Type | Default | Required |
|---|---|---|---|---|
| abort_incomplete_multipart_upload_days | Maximum time (in days) that you want to allow multipart uploads to remain in progress | number |
5 |
no |
| access_log_bucket_name | Name of the S3 bucket where s3 access log will be sent to | string |
"" |
no |
| acl | The canned ACL to apply. We recommend log-delivery-write for compatibility with AWS services | string |
"log-delivery-write" |
no |
| 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 |
| allow_ssl_requests_only | Set to true to require requests to use Secure Socket Layer (HTTPS/SSL). This will explicitly deny access to HTTP requests |
bool |
true |
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 delimiterand treated as a single ID element. |
list(string) |
[] |
no |
| block_public_acls | Set to false to disable the blocking of new public access lists on the bucket |
bool |
true |
no |
| block_public_policy | Set to false to disable the blocking of new public policies on the bucket |
bool |
true |
no |
| bucket_notifications_enabled | Send notifications for the object created events. Used for 3rd-party log collection from a bucket. This does not affect access log bucket created by this module. To enable bucket notifications on the access log bucket, create it separately using the cloudposse/s3-log-storage/aws | bool |
false |
no |
| bucket_notifications_prefix | Prefix filter. Used to manage object notifications | string |
"" |
no |
| bucket_notifications_type | Type of the notification configuration. Only SQS is supported. | string |
"SQS" |
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 |
| create_access_log_bucket | A flag to indicate if a bucket for s3 access logs should be created | bool |
false |
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_glacier_transition | Glacier transition might just increase your bill. Set to false to disable lifecycle transitions to AWS Glacier. | bool |
false |
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 |
| expiration_days | Number of days after which to expunge the objects | number |
90 |
no |
| force_destroy | (Optional, Default:false ) A boolean that indicates all objects should be deleted from the bucket so that the bucket can be destroyed without error. These objects are not recoverable | bool |
false |
no |
| glacier_transition_days | Number of days after which to move the data to the glacier storage tier | number |
60 |
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 |
| ignore_public_acls | Set to false to disable the ignoring of public access lists on the bucket |
bool |
true |
no |
| kms_master_key_arn | The AWS KMS master key ARN used for the SSE-KMS encryption. This can only be used when you set the value of sse_algorithm as aws:kms. The default aws/s3 AWS KMS master key is used if this element is absent while the sse_algorithm is aws:kms | 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 |
| lifecycle_prefix | Prefix filter. Used to manage object lifecycle events | string |
"" |
no |
| lifecycle_rule_enabled | Enable lifecycle events on this bucket | bool |
true |
no |
| lifecycle_tags | Tags filter. Used to manage object lifecycle events | map(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 |
| noncurrent_version_expiration_days | Specifies when noncurrent object versions expire | number |
90 |
no |
| noncurrent_version_transition_days | Specifies when noncurrent object versions transitions | number |
30 |
no |
| policy | A valid bucket policy JSON document. Note that if the policy document is not specific enough (but still valid), Terraform may view the policy as constantly changing in a terraform plan. In this case, please make sure you use the verbose/specific version of the policy | string |
"" |
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 |
| restrict_public_buckets | Set to false to disable the restricting of making the bucket public |
bool |
true |
no |
| sse_algorithm | The server-side encryption algorithm to use. Valid values are AES256 and aws:kms | string |
"AES256" |
no |
| stage | ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release' | string |
null |
no |
| standard_transition_days | Number of days to persist in the standard storage tier before moving to the infrequent access tier | number |
30 |
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 |
| versioning_enabled | A state of versioning. Versioning is a means of keeping multiple variants of an object in the same bucket | bool |
false |
no |
| Name | Description |
|---|---|
| bucket_arn | Bucket ARN |
| bucket_domain_name | FQDN of bucket |
| bucket_id | Bucket ID |
| bucket_notifications_sqs_queue_arn | Notifications SQS queue ARN |
| prefix | Prefix configured for lifecycle rules |
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Check out these related projects.
- terraform-aws-cloudtrail - Terraform module to provision an AWS CloudTrail and an encrypted S3 bucket with versioning to store CloudTrail logs
- terraform-aws-cloudtrail-cloudwatch-alarms - Terraform module for creating alarms for tracking important changes and occurances from cloudtrail.
- terraform-aws-s3-log-storage - This module creates an S3 bucket suitable for receiving logs from other AWS services such as S3, CloudFront, and CloudTrail
- terraform-aws-cloudtrail-s3-bucket - S3 bucket with built in IAM policy to allow CloudTrail logs
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