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https://github.com/cloudposse/terraform-aws-cloudtrail
Terraform module to provision an AWS CloudTrail and an encrypted S3 bucket with versioning to store CloudTrail logs
https://github.com/cloudposse/terraform-aws-cloudtrail
cloudtrail hcl2 logging s3 terraform terraform-modules
Last synced: 4 days ago
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Terraform module to provision an AWS CloudTrail and an encrypted S3 bucket with versioning to store CloudTrail logs
- Host: GitHub
- URL: https://github.com/cloudposse/terraform-aws-cloudtrail
- Owner: cloudposse
- License: apache-2.0
- Created: 2017-08-07T14:52:24.000Z (over 7 years ago)
- Default Branch: main
- Last Pushed: 2024-12-12T15:59:52.000Z (12 days ago)
- Last Synced: 2024-12-13T13:06:43.069Z (11 days ago)
- Topics: cloudtrail, hcl2, logging, s3, terraform, terraform-modules
- Language: HCL
- Homepage: https://cloudposse.com/accelerate
- Size: 4.19 MB
- Stars: 114
- Watchers: 27
- Forks: 78
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE
- Codeowners: .github/CODEOWNERS
Awesome Lists containing this project
README
Terraform module to provision an AWS [CloudTrail](https://aws.amazon.com/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.
> [!TIP]
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>
## Usage
```hcl
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](https://github.com/cloudposse/terraform-aws-cloudtrail-s3-bucket) module.
It creates an S3 bucket and an IAM policy to allow CloudTrail logs.
```hcl
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](examples/complete).
> [!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.
## Makefile Targets
```text
Available targets:
help Help screen
help/all Display help for all targets
help/short This help short screen
lint Lint terraform code
```
## Requirements
| Name | Version |
|------|---------|
| [terraform](#requirement\_terraform) | >= 1.3.0 |
| [aws](#requirement\_aws) | >= 3.0 |
## Providers
| Name | Version |
|------|---------|
| [aws](#provider\_aws) | >= 3.0 |
## Modules
| Name | Source | Version |
|------|--------|---------|
| [this](#module\_this) | cloudposse/label/null | 0.25.0 |
## Resources
| Name | Type |
|------|------|
| [aws_cloudtrail.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/cloudtrail) | resource |
## Inputs
| Name | Description | Type | Default | Required |
|------|-------------|------|---------|:--------:|
| [additional\_tag\_map](#input\_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](#input\_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 |
list(object({
name = optional(string)
field_selector = list(object({
field = string
ends_with = optional(list(string))
not_ends_with = optional(list(string))
equals = optional(list(string))
not_equals = optional(list(string))
starts_with = optional(list(string))
not_starts_with = optional(list(string))
}))
})) | `[]` | no |
| [attributes](#input\_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](#input\_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](#input\_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](#input\_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` | {
"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
} | no |
| [delimiter](#input\_delimiter) | Delimiter to be used between ID elements.
Defaults to `-` (hyphen). Set to `""` to use no delimiter at all. | `string` | `null` | no |
| [descriptor\_formats](#input\_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
`{
format = string
labels = list(string)
}`
(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). | `any` | `{}` | no |
| [enable\_log\_file\_validation](#input\_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](#input\_enable\_logging) | Enable logging for the trail | `bool` | `true` | no |
| [enabled](#input\_enabled) | Set to false to prevent the module from creating any resources | `bool` | `null` | no |
| [environment](#input\_environment) | ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT' | `string` | `null` | no |
| [event\_selector](#input\_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 | list(object({
include_management_events = bool
read_write_type = string
exclude_management_event_sources = optional(set(string))
data_resource = list(object({
type = string
values = list(string)
}))
})) | `[]` | no |
| [id\_length\_limit](#input\_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](#input\_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](#input\_insight\_selector) | Specifies an insight selector for type of insights to log on a trail | list(object({
insight_type = string
})) | `[]` | no |
| [is\_multi\_region\_trail](#input\_is\_multi\_region\_trail) | Specifies whether the trail is created in the current region or in all regions | `bool` | `true` | no |
| [is\_organization\_trail](#input\_is\_organization\_trail) | The trail is an AWS Organizations trail | `bool` | `false` | no |
| [kms\_key\_arn](#input\_kms\_key\_arn) | Specifies the KMS key ARN to use to encrypt the logs delivered by CloudTrail | `string` | `""` | no |
| [label\_key\_case](#input\_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](#input\_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](#input\_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](#input\_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 be
changed in later chained modules. Attempts to change it will be silently ignored. | `set(string)` | [
"default"
]
| no |
| [name](#input\_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](#input\_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](#input\_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](#input\_s3\_bucket\_name) | S3 bucket name for CloudTrail logs | `string` | n/a | yes |
| [s3\_key\_prefix](#input\_s3\_key\_prefix) | Prefix for S3 bucket used by Cloudtrail to store logs | `string` | `null` | no |
| [sns\_topic\_name](#input\_sns\_topic\_name) | Specifies the name of the Amazon SNS topic defined for notification of log file delivery | `string` | `null` | no |
| [stage](#input\_stage) | ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release' | `string` | `null` | no |
| [tags](#input\_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](#input\_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](#output\_cloudtrail\_arn) | The Amazon Resource Name of the trail |
| [cloudtrail\_home\_region](#output\_cloudtrail\_home\_region) | The region in which the trail was created |
| [cloudtrail\_id](#output\_cloudtrail\_id) | The ID of the trail. (Name for provider < v5, ARN for provider >= v5). |
## Related Projects
Check out these related projects.
- [terraform-aws-cloudtrail-cloudwatch-alarms](https://github.com/cloudposse/terraform-aws-cloudtrail-cloudwatch-alarms) - Terraform module for creating alarms for tracking important changes and occurances from cloudtrail.
- [terraform-aws-cloudtrail-s3-bucket](https://github.com/cloudposse/terraform-aws-cloudtrail-s3-bucket) - S3 bucket with built in IAM policy to allow CloudTrail logs
- [terraform-aws-s3-log-storage](https://github.com/cloudposse/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
> [!TIP]
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>
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## ✨ Contributing
This project is under active development, and we encourage contributions from our community.
Many thanks to our outstanding contributors:
For 🐛 bug reports & feature requests, please use the [issue tracker](https://github.com/cloudposse/terraform-aws-cloudtrail/issues).
In general, PRs are welcome. We follow the typical "fork-and-pull" Git workflow.
1. Review our [Code of Conduct](https://github.com/cloudposse/terraform-aws-cloudtrail/?tab=coc-ov-file#code-of-conduct) and [Contributor Guidelines](https://github.com/cloudposse/.github/blob/main/CONTRIBUTING.md).
2. **Fork** the repo on GitHub
3. **Clone** the project to your own machine
4. **Commit** changes to your own branch
5. **Push** your work back up to your fork
6. Submit a **Pull Request** so that we can review your changes
**NOTE:** Be sure to merge the latest changes from "upstream" before making a pull request!
### 🌎 Slack Community
Join our [Open Source Community](https://cpco.io/slack?utm_source=github&utm_medium=readme&utm_campaign=cloudposse/terraform-aws-cloudtrail&utm_content=slack) on Slack. It's **FREE** for everyone! Our "SweetOps" community is where you get to talk with others who share a similar vision for how to rollout and manage infrastructure. This is the best place to talk shop, ask questions, solicit feedback, and work together as a community to build totally *sweet* infrastructure.
### 📰 Newsletter
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## License
Preamble to the Apache License, Version 2.0
Complete license is available in the [`LICENSE`](LICENSE) file.
```text
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
```
## Trademarks
All other trademarks referenced herein are the property of their respective owners.
---
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