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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:

  1. Forced server-side encryption at rest for the S3 bucket
  2. S3 bucket versioning to easily recover from both unintended user actions and application failures
  3. S3 bucket is protected from deletion if it's not empty (force_destroy set to false)

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<details> <summary><strong>Watch demo of using Atmos with Terraform</strong></summary> <img src="https://github.com/cloudposse/atmos/blob/main/docs/demo.gif?raw=true"/><br/> <i>Example of running <a href="https://atmos.tools"><code>atmos</code></a> to manage infrastructure from our <a href="https://atmos.tools/quick-start/">Quick Start</a> tutorial.</i> </detalis>

Usage

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"
}

[!IMPORTANT] In Cloud Posse's examples, we avoid pinning modules to specific versions to prevent discrepancies between the documentation and the latest released versions. However, for your own projects, we strongly advise pinning each module to the exact version you're using. This practice ensures the stability of your infrastructure. Additionally, we recommend implementing a systematic approach for updating versions to avoid unexpected changes.

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Makefile Targets

Available targets:

  help                                Help screen
  help/all                            Display help for all targets
  help/short                          This help short screen
  lint                                Lint terraform code

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Requirements

NameVersion
<a name="requirement_terraform"></a> terraform>= 1.3.0
<a name="requirement_aws"></a> aws>= 3.0

Providers

NameVersion
<a name="provider_aws"></a> aws>= 3.0

Modules

NameSourceVersion
<a name="module_access_log_bucket_name"></a> access_log_bucket_namecloudposse/label/null0.25.0
<a name="module_s3_access_log_bucket"></a> s3_access_log_bucketcloudposse/s3-log-storage/aws1.4.3
<a name="module_s3_bucket"></a> s3_bucketcloudposse/s3-log-storage/aws1.4.3
<a name="module_this"></a> thiscloudposse/label/null0.25.0

Resources

NameType
aws_iam_policy_document.defaultdata source
aws_partition.currentdata source

Inputs

NameDescriptionTypeDefaultRequired
<a name="input_abort_incomplete_multipart_upload_days"></a> abort_incomplete_multipart_upload_daysMaximum time (in days) that you want to allow multipart uploads to remain in progressnumber5no
<a name="input_access_log_bucket_name"></a> access_log_bucket_nameName of the S3 bucket where s3 access log will be sent tostring""no
<a name="input_acl"></a> aclThe canned ACL to apply. We recommend log-delivery-write for compatibility with AWS servicesstring"log-delivery-write"no
<a name="input_additional_tag_map"></a> additional_tag_mapAdditional key-value pairs to add to each map in tags_as_list_of_maps. Not added to tags or id.<br/>This is for some rare cases where resources want additional configuration of tags<br/>and therefore take a list of maps with tag key, value, and additional configuration.map(string){}no
<a name="input_allow_ssl_requests_only"></a> allow_ssl_requests_onlySet to true to require requests to use Secure Socket Layer (HTTPS/SSL). This will explicitly deny access to HTTP requestsbooltrueno
<a name="input_attributes"></a> attributesID element. Additional attributes (e.g. workers or cluster) to add to id,<br/>in the order they appear in the list. New attributes are appended to the<br/>end of the list. The elements of the list are joined by the delimiter<br/>and treated as a single ID element.list(string)[]no
<a name="input_block_public_acls"></a> block_public_aclsSet to false to disable the blocking of new public access lists on the bucketbooltrueno
<a name="input_block_public_policy"></a> block_public_policySet to false to disable the blocking of new public policies on the bucketbooltrueno
<a name="input_bucket_notifications_enabled"></a> bucket_notifications_enabledSend 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/awsboolfalseno
<a name="input_bucket_notifications_prefix"></a> bucket_notifications_prefixPrefix filter. Used to manage object notificationsstring""no
<a name="input_bucket_notifications_type"></a> bucket_notifications_typeType of the notification configuration. Only SQS is supported.string"SQS"no
<a name="input_context"></a> contextSingle object for setting entire context at once.<br/>See description of individual variables for details.<br/>Leave string and numeric variables as null to use default value.<br/>Individual variable settings (non-null) override settings in context object,<br/>except for attributes, tags, and additional_tag_map, which are merged.any<pre>{<br/> "additional_tag_map": {},<br/> "attributes": [],<br/> "delimiter": null,<br/> "descriptor_formats": {},<br/> "enabled": true,<br/> "environment": null,<br/> "id_length_limit": null,<br/> "label_key_case": null,<br/> "label_order": [],<br/> "label_value_case": null,<br/> "labels_as_tags": [<br/> "unset"<br/> ],<br/> "name": null,<br/> "namespace": null,<br/> "regex_replace_chars": null,<br/> "stage": null,<br/> "tags": {},<br/> "tenant": null<br/>}</pre>no
<a name="input_create_access_log_bucket"></a> create_access_log_bucketA flag to indicate if a bucket for s3 access logs should be createdboolfalseno
<a name="input_delimiter"></a> delimiterDelimiter to be used between ID elements.<br/>Defaults to - (hyphen). Set to "" to use no delimiter at all.stringnullno
<a name="input_descriptor_formats"></a> descriptor_formatsDescribe additional descriptors to be output in the descriptors output map.<br/>Map of maps. Keys are names of descriptors. Values are maps of the form<br/>{<br/> format = string<br/> labels = list(string)<br/>}<br/>(Type is any so the map values can later be enhanced to provide additional options.)<br/>format is a Terraform format string to be passed to the format() function.<br/>labels is a list of labels, in order, to pass to format() function.<br/>Label values will be normalized before being passed to format() so they will be<br/>identical to how they appear in id.<br/>Default is {} (descriptors output will be empty).any{}no
<a name="input_enable_glacier_transition"></a> enable_glacier_transitionGlacier transition might just increase your bill. Set to false to disable lifecycle transitions to AWS Glacier.boolfalseno
<a name="input_enabled"></a> enabledSet to false to prevent the module from creating any resourcesboolnullno
<a name="input_environment"></a> environmentID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT'stringnullno
<a name="input_expiration_days"></a> expiration_daysNumber of days after which to expunge the objectsnumber90no
<a name="input_force_destroy"></a> 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 recoverableboolfalseno
<a name="input_glacier_transition_days"></a> glacier_transition_daysNumber of days after which to move the data to the glacier storage tiernumber60no
<a name="input_id_length_limit"></a> id_length_limitLimit id to this many characters (minimum 6).<br/>Set to 0 for unlimited length.<br/>Set to null for keep the existing setting, which defaults to 0.<br/>Does not affect id_full.numbernullno
<a name="input_ignore_public_acls"></a> ignore_public_aclsSet to false to disable the ignoring of public access lists on the bucketbooltrueno
<a name="input_kms_master_key_arn"></a> kms_master_key_arnThe 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:kmsstring""no
<a name="input_label_key_case"></a> label_key_caseControls the letter case of the tags keys (label names) for tags generated by this module.<br/>Does not affect keys of tags passed in via the tags input.<br/>Possible values: lower, title, upper.<br/>Default value: title.stringnullno
<a name="input_label_order"></a> label_orderThe order in which the labels (ID elements) appear in the id.<br/>Defaults to ["namespace", "environment", "stage", "name", "attributes"].<br/>You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present.list(string)nullno
<a name="input_label_value_case"></a> label_value_caseControls the letter case of ID elements (labels) as included in id,<br/>set as tag values, and output by this module individually.<br/>Does not affect values of tags passed in via the tags input.<br/>Possible values: lower, title, upper and none (no transformation).<br/>Set this to title and set delimiter to "" to yield Pascal Case IDs.<br/>Default value: lower.stringnullno
<a name="input_labels_as_tags"></a> labels_as_tagsSet of labels (ID elements) to include as tags in the tags output.<br/>Default is to include all labels.<br/>Tags with empty values will not be included in the tags output.<br/>Set to [] to suppress all generated tags.<br/>Notes:<br/> The value of the name tag, if included, will be the id, not the name.<br/> Unlike other null-label inputs, the initial setting of labels_as_tags cannot be<br/> changed in later chained modules. Attempts to change it will be silently ignored.set(string)<pre>[<br/> "default"<br/>]</pre>no
<a name="input_lifecycle_prefix"></a> lifecycle_prefixPrefix filter. Used to manage object lifecycle eventsstring""no
<a name="input_lifecycle_rule_enabled"></a> lifecycle_rule_enabledEnable lifecycle events on this bucketbooltrueno
<a name="input_lifecycle_tags"></a> lifecycle_tagsTags filter. Used to manage object lifecycle eventsmap(string){}no
<a name="input_name"></a> nameID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.<br/>This is the only ID element not also included as a tag.<br/>The "name" tag is set to the full id string. There is no tag with the value of the name input.stringnullno
<a name="input_namespace"></a> namespaceID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally uniquestringnullno
<a name="input_noncurrent_version_expiration_days"></a> noncurrent_version_expiration_daysSpecifies when noncurrent object versions expirenumber90no
<a name="input_noncurrent_version_transition_days"></a> noncurrent_version_transition_daysSpecifies when noncurrent object versions transitionsnumber30no
<a name="input_policy"></a> policyA 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 policystring""no
<a name="input_regex_replace_chars"></a> regex_replace_charsTerraform regular expression (regex) string.<br/>Characters matching the regex will be removed from the ID elements.<br/>If not set, "/[^a-zA-Z0-9-]/" is used to remove all characters other than hyphens, letters and digits.stringnullno
<a name="input_restrict_public_buckets"></a> restrict_public_bucketsSet to false to disable the restricting of making the bucket publicbooltrueno
<a name="input_sse_algorithm"></a> sse_algorithmThe server-side encryption algorithm to use. Valid values are AES256 and aws:kmsstring"AES256"no
<a name="input_stage"></a> stageID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'stringnullno
<a name="input_standard_transition_days"></a> standard_transition_daysNumber of days to persist in the standard storage tier before moving to the infrequent access tiernumber30no
<a name="input_tags"></a> tagsAdditional tags (e.g. {'BusinessUnit': 'XYZ'}).<br/>Neither the tag keys nor the tag values will be modified by this module.map(string){}no
<a name="input_tenant"></a> tenantID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is forstringnullno
<a name="input_versioning_enabled"></a> versioning_enabledA state of versioning. Versioning is a means of keeping multiple variants of an object in the same bucketboolfalseno

Outputs

NameDescription
<a name="output_bucket_arn"></a> bucket_arnBucket ARN
<a name="output_bucket_domain_name"></a> bucket_domain_nameFQDN of bucket
<a name="output_bucket_id"></a> bucket_idBucket ID
<a name="output_bucket_notifications_sqs_queue_arn"></a> bucket_notifications_sqs_queue_arnNotifications SQS queue ARN
<a name="output_prefix"></a> prefixPrefix configured for lifecycle rules
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✨ Contributing

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Many thanks to our outstanding contributors:

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In general, PRs are welcome. We follow the typical "fork-and-pull" Git workflow.

  1. Review our Code of Conduct and Contributor Guidelines.
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NOTE: Be sure to merge the latest changes from "upstream" before making a pull request!

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