123 lines
6.3 KiB
Cheetah
123 lines
6.3 KiB
Cheetah
# {{ .ProviderShortName | upper }} Terraform Provider
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The STACKIT Terraform provider is the official Terraform provider to integrate all the resources developed by [STACKIT](https://www.stackit.de/en/).
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## Example Usage
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{{ tffile "examples/provider/provider.tf" }}
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## Authentication
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To authenticate, you will need a [service account](https://docs.stackit.cloud/stackit/en/service-accounts-134415819.html). Create it in the [STACKIT Portal](https://portal.stackit.cloud/) and assign it the necessary permissions, e.g. `project.owner`. There are multiple ways to authenticate:
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- Key flow (recommended)
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- Token flow
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When setting up authentication, the provider will always try to use the key flow first and search for credentials in several locations, following a specific order:
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1. Explicit configuration, e.g. by setting the field `service_account_key_path` in the provider block (see example below)
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2. Environment variable, e.g. by setting `STACKIT_SERVICE_ACCOUNT_KEY_PATH`
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3. Credentials file
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The provider will check the credentials file located in the path defined by the `STACKIT_CREDENTIALS_PATH` env var, if specified,
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or in `$HOME/.stackit/credentials.json` as a fallback.
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The credentials should be set using the same name as the environment variables. Example:
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```json
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{
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"STACKIT_SERVICE_ACCOUNT_TOKEN": "foo_token",
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"STACKIT_SERVICE_ACCOUNT_KEY_PATH": "path/to/sa_key.json",
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"STACKIT_PRIVATE_KEY_PATH": "path/to/private_key.pem"
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}
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```
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### Key flow
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The following instructions assume that you have created a service account and assigned the necessary permissions to it, e.g. `project.owner`.
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To use the key flow, you need to have a service account key, which must have an RSA key-pair attached to it.
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When creating the service account key, a new pair can be created automatically, which will be included in the service account key. This will make it much easier to configure the key flow authentication in the [STACKIT Terraform Provider](https://github.com/stackitcloud/terraform-provider-stackit), by just providing the service account key.
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**Optionally**, you can provide your own private key when creating the service account key, which will then require you to also provide it explicitly to the [STACKIT Terraform Provider](https://github.com/stackitcloud/terraform-provider-stackit), additionally to the service account key. Check the STACKIT Knowledge Base for an [example of how to create your own key-pair](https://docs.stackit.cloud/stackit/en/usage-of-the-service-account-keys-in-stackit-175112464.html#UsageoftheserviceaccountkeysinSTACKIT-CreatinganRSAkey-pair).
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To configure the key flow, follow this steps:
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1. Create a service account key:
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- Use the [STACKIT Portal](https://portal.stackit.cloud/): go to the `Service Accounts` tab, choose a `Service Account` and go to `Service Account Keys` to create a key. For more details, see [Create a service account key](https://docs.stackit.cloud/stackit/en/create-a-service-account-key-175112456.html)
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2. Save the content of the service account key by copying it and saving it in a JSON file.
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The expected format of the service account key is a **JSON** with the following structure:
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```json
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{
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"id": "uuid",
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"publicKey": "public key",
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"createdAt": "2023-08-24T14:15:22Z",
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"validUntil": "2023-08-24T14:15:22Z",
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"keyType": "USER_MANAGED",
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"keyOrigin": "USER_PROVIDED",
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"keyAlgorithm": "RSA_2048",
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"active": true,
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"credentials": {
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"kid": "string",
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"iss": "my-sa@sa.stackit.cloud",
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"sub": "uuid",
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"aud": "string",
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(optional) "privateKey": "private key when generated by the SA service"
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}
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}
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```
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3. Configure the service account key for authentication in the provider by following one of the alternatives below:
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- setting the fields in the provider block: `service_account_key` or `service_account_key_path`
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- setting the environment variable: `STACKIT_SERVICE_ACCOUNT_KEY_PATH`
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- setting `STACKIT_SERVICE_ACCOUNT_KEY_PATH` in the credentials file (see above)
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> **Optionally, only if you have provided your own RSA key-pair when creating the service account key**, you also need to configure your private key (takes precedence over the one included in the service account key, if present). **The private key must be PEM encoded** and can be provided using one of the options below:
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>
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> - setting the field in the provider block: `private_key` or `private_key_path`
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> - setting the environment variable: `STACKIT_PRIVATE_KEY_PATH`
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> - setting `STACKIT_PRIVATE_KEY_PATH` in the credentials file (see above)
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### Token flow
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Using this flow is less secure since the token is long-lived. You can provide the token in several ways:
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1. Setting the field `service_account_token` in the provider
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2. Setting the environment variable `STACKIT_SERVICE_ACCOUNT_TOKEN`
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3. Setting it in the credentials file (see above)
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# Backend configuration
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To keep track of your terraform state, you can configure an [S3 backend](https://developer.hashicorp.com/terraform/language/settings/backends/s3) using [STACKIT Object Storage](https://docs.stackit.cloud/stackit/en/object-storage-s3-compatible-71009778.html).
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To do so, you need an Object Storage [S3 bucket](https://docs.stackit.cloud/stackit/en/basic-concept-objectstorage-71009785.html#BasicConceptObjectStorage-Buckets) and [credentials](https://docs.stackit.cloud/stackit/en/basic-concept-objectstorage-71009785.html#BasicConceptObjectStorage-Credentials) to access it. If you need to create them, check [Getting Started - Object Storage](https://docs.stackit.cloud/stackit/en/getting-started-objectstorage-71009792.html).
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Once you have everything setup, you can configure the backend by adding the following block to your terraform configuration:
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```
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terraform {
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backend "s3" {
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bucket = "BUCKET_NAME"
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key = "path/to/key"
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endpoints = {
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s3 = "https://object.storage.eu01.onstackit.cloud"
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}
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region = "eu01"
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skip_credentials_validation = true
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skip_region_validation = true
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skip_s3_checksum = true
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skip_requesting_account_id = true
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secret_key = "SECRET_KEY"
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access_key = "ACCESS_KEY"
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}
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}
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```
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Note: AWS specific checks must be skipped as they do not work on STACKIT. For details on what those validations do, see [here](https://developer.hashicorp.com/terraform/language/settings/backends/s3#configuration).
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{{ .SchemaMarkdown | trimspace }}
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