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https://github.com/cloudposse/terraform-aws-ssm-tls-self-signed-cert

This module creates a self-signed certificate and writes it alongside with its key to SSM Parameter Store (or alternatively AWS Secrets Manager).
https://github.com/cloudposse/terraform-aws-ssm-tls-self-signed-cert

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This module creates a self-signed certificate and writes it alongside with its key to SSM Parameter Store (or alternatively AWS Secrets Manager).

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This module creates a self-signed certificate and writes it alongside with its key to SSM Parameter Store (or alternatively AWS Secrets Manager).

> [!TIP]
> #### πŸ‘½ Use Atmos with Terraform
> Cloud Posse uses [`atmos`](https://atmos.tools) to easily orchestrate multiple environments using Terraform.

> Works with [Github Actions](https://atmos.tools/integrations/github-actions/), [Atlantis](https://atmos.tools/integrations/atlantis), or [Spacelift](https://atmos.tools/integrations/spacelift).
>
>
> Watch demo of using Atmos with Terraform
>

> Example of running atmos to manage infrastructure from our Quick Start tutorial.
>

## Usage

For a complete example, see [examples/complete](examples/complete).

```hcl
module "self_signed_cert" {
source = "cloudposse/ssm-tls-self-signed-cert/aws"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"

namespace = "eg"
stage = "dev"
name = "self-signed-cert"

subject = {
common_name = "example"
organization = "Cloud Posse"
organizational_unit = "Engineering"
}

validity = {
duration_hours = 730
early_renewal_hours = 24
}

allowed_uses = [
"key_encipherment",
"digital_signature",
"server_auth"
]

subject_alt_names = {
ip_addresses = ["10.10.10.10"]
dns_names = ["example.com"]
uris = ["https://example.com"]
}
}
```

> [!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.

## Examples

Here is an example of using this module:
- [`examples/complete`](examples/complete) - complete example of using this module.

## 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) | >= 0.13.0 |
| [aws](#requirement\_aws) | >= 3.0 |
| [tls](#requirement\_tls) | >= 4.0.0 |

## Providers

| Name | Version |
|------|---------|
| [aws](#provider\_aws) | >= 3.0 |
| [tls](#provider\_tls) | >= 4.0.0 |

## Modules

| Name | Source | Version |
|------|--------|---------|
| [this](#module\_this) | cloudposse/label/null | 0.25.0 |

## Resources

| Name | Type |
|------|------|
| [aws_acm_certificate.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/acm_certificate) | resource |
| [aws_secretsmanager_secret.certificate](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/secretsmanager_secret) | resource |
| [aws_secretsmanager_secret.private_key](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/secretsmanager_secret) | resource |
| [aws_secretsmanager_secret_version.certificate](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/secretsmanager_secret_version) | resource |
| [aws_secretsmanager_secret_version.private_key](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/secretsmanager_secret_version) | resource |
| [aws_ssm_parameter.certificate](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ssm_parameter) | resource |
| [aws_ssm_parameter.private_key](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ssm_parameter) | resource |
| [tls_cert_request.default](https://registry.terraform.io/providers/hashicorp/tls/latest/docs/resources/cert_request) | resource |
| [tls_locally_signed_cert.default](https://registry.terraform.io/providers/hashicorp/tls/latest/docs/resources/locally_signed_cert) | resource |
| [tls_private_key.default](https://registry.terraform.io/providers/hashicorp/tls/latest/docs/resources/private_key) | resource |
| [tls_self_signed_cert.default](https://registry.terraform.io/providers/hashicorp/tls/latest/docs/resources/self_signed_cert) | 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 |
| [allowed\_uses](#input\_allowed\_uses) | List of keywords each describing a use that is permitted for the issued certificate.
Must be one of of the values outlined in [self\_signed\_cert.allowed\_uses](https://registry.terraform.io/providers/hashicorp/tls/latest/docs/resources/self_signed_cert#allowed_uses). | `list(string)` | n/a | yes |
| [asm\_recovery\_window\_in\_days](#input\_asm\_recovery\_window\_in\_days) | Number of days that AWS Secrets Manager waits before it can delete the secret. This value can be `0` to force deletion without recovery or range from `7` to `30` days.

This value is ignored if `var.certificate_backends` is not `ASM`, or if `var.certificate_backend_enabled` is `false`. | `number` | `30` | 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 |
| [basic\_constraints](#input\_basic\_constraints) | The [basic constraints](https://datatracker.ietf.org/doc/html/rfc5280#section-4.2.1.9) of the issued certificate.
Currently, only the `CA` constraint (which identifies whether the subject of the certificate is a CA) can be set.

Defaults to this certificate not being a CA. |

object({
ca = bool
})
|
{
"ca": false
}
| no |
| [certificate\_backend\_kms\_key\_id](#input\_certificate\_backend\_kms\_key\_id) | The KMD Key ID (ARN or ID) to use when encrypting either the AWS SSM Parameters or AWS Secrets Manager Secrets relating to the certificate.

If not specified, the Amazon-managed Key `alias/aws/ssm` will be used if `var.certificate_backends` contains `SSM`,
and `alias/aws/secretsmanager` will be used if `var.certificate_backends` is `ASM`. | `string` | `null` | no |
| [certificate\_backends](#input\_certificate\_backends) | The certificate backend to use when writing secrets related to the self-signed certificate.
The value specified can either be `SSM` (AWS Systems Manager Parameter Store), `ASM` (AWS Secrets Manager),
and/or `ACM` (AWS Certificate Manager).

Defaults to `SSM`. | `set(string)` |
[
"SSM"
]
| no |
| [certificate\_backends\_base64\_enabled](#input\_certificate\_backends\_base64\_enabled) | Enable or disable base64 encoding of secrets before writing them to the secrets store. | `bool` | `false` | no |
| [certificate\_backends\_enabled](#input\_certificate\_backends\_enabled) | Enable or disable writing to the secrets store. | `bool` | `true` | no |
| [certificate\_chain](#input\_certificate\_chain) | When using ACM as a certificate backend, some certificates store a certificate chain from a CA. This CA will come from another resource. |
object({
cert_pem = string
private_key_pem = string
})
| `null` | 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 |
| [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 |
| [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 |
| [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 |
| [private\_key\_algorithm](#input\_private\_key\_algorithm) | The name of the algorithm for the private key of the certificate. Currently only RSA and ECDSA are supported.

If a preexisting private key is supplied via `var.private_key_contents`, this value must match that key's algorithm.

Defaults to RSA as it is a more widely adopted algorithm, although ECDSA provides the same level of security and with shorter keys. | `string` | `"RSA"` | no |
| [private\_key\_contents](#input\_private\_key\_contents) | The contents of the private key to use for the certificate.
If supplied, this module will not create a private key and use these contents instead for the private key.

Defaults to `null`, which means a private key will be created. | `string` | `null` | no |
| [private\_key\_ecdsa\_curve](#input\_private\_key\_ecdsa\_curve) | When `var.cert_key_algorithm` is `ECDSA`, the name of the elliptic curve to use. May be any one of `P224`, `P256`, `P384` or `P521`.

Ignored if `var.cert_key_algorithm` is not `ECDSA`, or if a preexisting private key is supplied via `var.private_key_contents`.

Defaults to the `tls` provider default. | `string` | `"P224"` | no |
| [private\_key\_rsa\_bits](#input\_private\_key\_rsa\_bits) | When `var.cert_key_algorithm` is `RSA`, the size of the generated RSA key in bits.

Ignored if `var.cert_key_algorithm` is not `RSA`, or if a preexisting private key is supplied via `var.private_key_contents`.

Defaults to the `tls` provider default. | `number` | `2048` | 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 |
| [secret\_extensions](#input\_secret\_extensions) | The extensions use when writing secrets to the certificate backend.

Please refer to `var.secret_path_format` for information on how secret paths are computed. |
object({
certificate = string
private_key = string
})
|
{
"certificate": "pem",
"private_key": "key"
}
| no |
| [secret\_path\_format](#input\_secret\_path\_format) | The path format to use when writing secrets to the certificate backend.

The certificate secret path will be computed as `format(var.secret_path_format, var.name, var.secret_extensions.certificate)`
and the private key path as `format(var.secret_path_format, var.name, var.secret_extensions.private_key)`.

Thus by default, if `var.name`=`example-self-signed-cert`, then the resulting secret paths for the self-signed certificate's
PEM file and private key will be `/example-self-signed-cert.pem` and `/example-self-signed-cert.key`, respectively.

This variable can be overridden in order to create more specific certificate backend paths. | `string` | `"/%s.%s"` | no |
| [skid\_enabled](#input\_skid\_enabled) | Whether or not the subject key identifier (SKID) should be included in the certificate. | `bool` | `false` | no |
| [stage](#input\_stage) | ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release' | `string` | `null` | no |
| [subject](#input\_subject) | The subject configuration for the certificate.
This should be a map that is compatible with [tls\_cert\_request.subject](https://registry.terraform.io/providers/hashicorp/tls/latest/docs/resources/cert_request#subject).

If `common_name` is omitted, it will be set as `module.this.id`. | `any` | `{}` | no |
| [subject\_alt\_names](#input\_subject\_alt\_names) | The subject alternative name (SAN) configuration for the certificate. This configuration consists of several lists, each of which can also be set to `null` or `[]`.

`dns_names`: List of DNS names for which a certificate is being requested.
`ip_addresses`: List of IP addresses for which a certificate is being requested.
`uris`: List of URIs for which a certificate is being requested.

Defaults to no SANs. |
object({
dns_names = list(string)
ip_addresses = list(string)
uris = list(string)
})
|
{
"dns_names": null,
"ip_addresses": null,
"uris": 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 |
| [use\_locally\_signed](#input\_use\_locally\_signed) | Create a locally signed certificate/key pair instead of a self-signed one. This is useful it a previously created certificate chain is to be used to sign a certificate. | `bool` | `false` | no |
| [validity](#input\_validity) | Validity settings for the issued certificate:

`duration_hours`: The number of hours from issuing the certificate until it becomes invalid.
`early_renewal_hours`: If set, the resource will consider the certificate to have expired the given number of hours before its actual expiry time (see: [self\_signed\_cert.early\_renewal\_hours](https://registry.terraform.io/providers/hashicorp/tls/latest/docs/resources/self_signed_cert#early_renewal_hours)).

Defaults to 10 years and no early renewal hours. |
object({
duration_hours = number
early_renewal_hours = number
})
|
{
"duration_hours": 87600,
"early_renewal_hours": null
}
| no |

## Outputs

| Name | Description |
|------|-------------|
| [certificate\_arn](#output\_certificate\_arn) | ARN of certificate stored in ACM that other services may need to refer to. This is useful when the certificate is stored in ACM. |
| [certificate\_key\_path](#output\_certificate\_key\_path) | Secrets store path containing the certificate private key file. |
| [certificate\_pem](#output\_certificate\_pem) | Contents of the certificate PEM. |
| [certificate\_pem\_path](#output\_certificate\_pem\_path) | Secrets store path containing the certificate PEM file. |

## Related Projects

Check out these related projects.

- [terraform-null-label](https://github.com/cloudposse/terraform-null-label) - Terraform module designed to generate consistent names and tags for resources. Use terraform-null-label to implement a strict naming convention.

## References

For additional context, refer to some of these links.

- [Terraform Standard Module Structure](https://www.terraform.io/docs/modules/index.html#standard-module-structure) - HashiCorp's standard module structure is a file and directory layout we recommend for reusable modules distributed in separate repositories.
- [Terraform Module Requirements](https://www.terraform.io/docs/registry/modules/publish.html#requirements) - HashiCorp's guidance on all the requirements for publishing a module. Meeting the requirements for publishing a module is extremely easy.
- [Terraform `random_integer` Resource](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/integer) - The resource random_integer generates random values from a given range, described by the min and max attributes of a given resource.
- [Terraform Version Pinning](https://www.terraform.io/docs/configuration/terraform.html#specifying-a-required-terraform-version) - The required_version setting can be used to constrain which versions of the Terraform CLI can be used with your configuration

> [!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 πŸ› bug reports & feature requests, please use the [issue tracker](https://github.com/cloudposse/terraform-aws-ssm-tls-self-signed-cert/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-ssm-tls-self-signed-cert/?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!

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## License

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.

## Copyrights

Copyright Β© 2020-2024 [Cloud Posse, LLC](https://cloudposse.com)

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