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S3 bucket with built in IAM policy to allow CloudTrail logs
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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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IMPORTANT: The master branch is used in source just as an example. In your code, do not pin to master because there may be breaking changes between releases. Instead pin to the release tag (e.g. ?ref=tags/x.y.z) of one of our latest releases.

module "s3_bucket" {
  source    = "git::"
  namespace = "cp"
  stage     = "prod"
  name      = "cluster"
  region    = "us-east-1"

Makefile Targets

Available targets:

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


Name Description Type Default Required
acl The canned ACL to apply. We recommend log-delivery-write for compatibility with AWS services string log-delivery-write no
attributes Additional attributes (e.g. 1) list(string) <list> no
delimiter Delimiter to be used between namespace, environment, stage, name and attributes string - 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 true no
environment Environment, e.g. 'prod', 'staging', 'dev', 'pre-prod', 'UAT' string `` no
expiration_days Number of days after which to expunge the objects string 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 string 60 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
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) <map> no
name Solution name, e.g. 'app' or 'jenkins' string `` no
namespace Namespace, which could be your organization name or abbreviation, e.g. 'eg' or 'cp' string `` no
noncurrent_version_expiration_days Specifies when noncurrent object versions expire string 90 no
noncurrent_version_transition_days Specifies when noncurrent object versions transitions string 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
region If specified, the AWS region this bucket should reside in. Otherwise, the region used by the callee string `` no
sse_algorithm The server-side encryption algorithm to use. Valid values are AES256 and aws:kms string AES256 no
stage Stage, e.g. 'prod', 'staging', 'dev', OR 'source', 'build', 'test', 'deploy', 'release' string `` no
standard_transition_days Number of days to persist in the standard storage tier before moving to the infrequent access tier string 30 no
tags Additional tags (e.g. map('BusinessUnit','XYZ') map(string) <map> 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
prefix Prefix configured for lifecycle rules

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