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terraform-aws-eks-blueprints-addon

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Terraform AWS module which creates an EKS addon (helm release + IRSA)

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# Amazon EKS Blueprints Addon Terraform module

Terraform module which provisions an addon ([Helm release](https://registry.terraform.io/providers/hashicorp/helm/latest/docs/resources/release)) and an [IAM role for service accounts (IRSA)](https://docs.aws.amazon.com/eks/latest/userguide/iam-roles-for-service-accounts.html).

## Usage

### Create Addon (Helm Release) w/ IAM Role for Service Account (IRSA)

```hcl
module "eks_blueprints_addon" {
  source = "aws-ia/eks-blueprints-addon/aws"
  version = "~> 1.0" #ensure to update this to the latest/desired version

chart            = "karpenter"
  chart_version    = "0.16.2"
  repository       = "https://charts.karpenter.sh/"
  description      = "Kubernetes Node Autoscaling: built for flexibility, performance, and simplicity"
  namespace        = "karpenter"
  create_namespace = true

set = [
    {
      name  = "clusterName"
      value = "eks-blueprints-addon-example"
    },
    {
      name  = "clusterEndpoint"
      value = "https://EXAMPLED539D4633E53DE1B71EXAMPLE.gr7.us-west-2.eks.amazonaws.com"
    },
    {
      name  = "aws.defaultInstanceProfile"
      value = "arn:aws:iam::111111111111:instance-profile/KarpenterNodeInstanceProfile-complete"
    }
  ]

set_irsa_names = ["serviceAccount.annotations.eks\\.amazonaws\\.com/role-arn"]
  # # Equivalent to the following but the ARN is only known internally to the module
  # set = [{
  #   name  = "serviceAccount.annotations.eks\\.amazonaws\\.com/role-arn"
  #   value = iam_role_arn.this[0].arn
  # }]

# IAM role for service account (IRSA)
  create_role = true
  role_name   = "karpenter-controller"
  role_policies = {
    karpenter = "arn:aws:iam::111111111111:policy/Karpenter_Controller_Policy-20221008165117447500000007"
  }

oidc_providers = {
    this = {
      provider_arn = "oidc.eks.us-west-2.amazonaws.com/id/EXAMPLED539D4633E53DE1B71EXAMPLE"
      # namespace is inherited from chart
      service_account = "karpenter"
    }
  }

tags = {
    Environment = "dev"
  }
}
```

### Create Addon (Helm Release) Only

```hcl
module "eks_blueprints_addon" {
  source = "aws-ia/eks-blueprints-addon/aws"
  version = "~> 1.0" #ensure to update this to the latest/desired version

chart         = "metrics-server"
  chart_version = "3.8.2"
  repository    = "https://kubernetes-sigs.github.io/metrics-server/"
  description   = "Metric server helm Chart deployment configuration"
  namespace     = "kube-system"

values = [
 <<-EOT
 podDisruptionBudget:
 maxUnavailable: 1
 metrics:
 enabled: true
 EOT
 ]

set = [
    {
      name  = "replicas"
      value = 3
    }
  ]
}
```

### Create IAM Role for Service Account (IRSA) Only

```hcl
module "eks_blueprints_addon" {
  source = "aws-ia/eks-blueprints-addon/aws"
  version = "~> 1.0" #ensure to update this to the latest/desired version

# Disable helm release
  create_release = false

# IAM role for service account (IRSA)
  create_role = true
  create_policy = false
  role_name   = "aws-vpc-cni-ipv4"
  role_policies = {
    AmazonEKS_CNI_Policy = "arn:aws:iam::aws:policy/AmazonEKS_CNI_Policy"
  }

oidc_providers = {
    this = {
      provider_arn    = "oidc.eks.us-west-2.amazonaws.com/id/EXAMPLED539D4633E53DE1B71EXAMPLE"
      namespace       = "kube-system"
      service_account = "aws-node"
    }
  }

tags = {
    Environment = "dev"
  }
}
```

### Create IAM Role for Service Account (IRSA) with Extra Trust Policy Statements

```hcl
module "eks_blueprints_addon" {
  source = "aws-ia/eks-blueprints-addon/aws"
  version = "~> 1.0" #ensure to update this to the latest/desired version

# Disable helm release
  create_release = false

# IAM role for service account (IRSA + extra statements)
  create_role = true
  role_name   = "aws-vpc-cni-ipv4"
  role_policies = {
    AmazonEKS_CNI_Policy = "arn:aws:iam::aws:policy/AmazonEKS_CNI_Policy"
  }

trust_policy_statements = [
    {
      sid    = "PodIdentity"
      effect = "Allow"
      actions = [
        "sts:AssumeRole",
        "sts:TagSession",
      ]
      principals = [
        {
          type        = "Service"
          identifiers = ["pods.eks.amazonaws.com"]
        }
      ]
    }
  ]

tags = {
    Environment = "dev"
  }
}
```

## Support & Feedback

> [!IMPORTANT]
> EKS Blueprints for Terraform is maintained by AWS Solution Architects. It is not part of an AWS
> service and support is provided as a best-effort by the EKS Blueprints community. To provide feedback,
> please use the [issues templates](https://github.com/aws-ia/terraform-aws-eks-blueprints-addon/issues)
> provided. If you are interested in contributing to EKS Blueprints, see the
> [Contribution guide](https://github.com/aws-ia/terraform-aws-eks-blueprints-addon/blob/main/.github/CONTRIBUTING.md).

## Requirements

| Name | Version |
|------|---------|
| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.3.2 |
| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 4.47 |
| <a name="requirement_helm"></a> [helm](#requirement\_helm) | >= 3.0 |

## Providers

| Name | Version |
|------|---------|
| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 4.47 |
| <a name="provider_helm"></a> [helm](#provider\_helm) | >= 3.0 |

## Modules

No modules.

## Resources

| Name | Type |
|------|------|
| [aws_iam_policy.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_policy) | resource |
| [aws_iam_role.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_role) | resource |
| [aws_iam_role_policy_attachment.additional](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_role_policy_attachment) | resource |
| [aws_iam_role_policy_attachment.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_role_policy_attachment) | resource |
| [helm_release.this](https://registry.terraform.io/providers/hashicorp/helm/latest/docs/resources/release) | resource |
| [aws_caller_identity.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/caller_identity) | data source |
| [aws_iam_policy_document.assume](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
| [aws_iam_policy_document.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
| [aws_partition.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/partition) | data source |

## Inputs

| Name | Description | Type | Default | Required |
|------|-------------|------|---------|:--------:|
| <a name="input_allow_self_assume_role"></a> [allow\_self\_assume\_role](#input\_allow\_self\_assume\_role) | Determines whether to allow the role to be [assume itself](https://aws.amazon.com/blogs/security/announcing-an-update-to-iam-role-trust-policy-behavior/) | `bool` | `false` | no |
| <a name="input_assume_role_condition_test"></a> [assume\_role\_condition\_test](#input\_assume\_role\_condition\_test) | Name of the [IAM condition operator](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_condition_operators.html) to evaluate when assuming the role | `string` | `"StringEquals"` | no |
| <a name="input_atomic"></a> [atomic](#input\_atomic) | If set, installation process purges chart on fail. The wait flag will be set automatically if atomic is used. Defaults to `false` | `bool` | `null` | no |
| <a name="input_chart"></a> [chart](#input\_chart) | Chart name to be installed. The chart name can be local path, a URL to a chart, or the name of the chart if `repository` is specified | `string` | `""` | no |
| <a name="input_chart_version"></a> [chart\_version](#input\_chart\_version) | Specify the exact chart version to install. If this is not specified, the latest version is installed | `string` | `null` | no |
| <a name="input_cleanup_on_fail"></a> [cleanup\_on\_fail](#input\_cleanup\_on\_fail) | Allow deletion of new resources created in this upgrade when upgrade fails. Defaults to `false` | `bool` | `null` | no |
| <a name="input_create"></a> [create](#input\_create) | Controls if resources should be created (affects all resources) | `bool` | `true` | no |
| <a name="input_create_namespace"></a> [create\_namespace](#input\_create\_namespace) | Create the namespace if it does not yet exist. Defaults to `false` | `bool` | `null` | no |
| <a name="input_create_policy"></a> [create\_policy](#input\_create\_policy) | Whether to create an IAM policy that is attached to the IAM role created | `bool` | `true` | no |
| <a name="input_create_release"></a> [create\_release](#input\_create\_release) | Determines whether the Helm release is created | `bool` | `true` | no |
| <a name="input_create_role"></a> [create\_role](#input\_create\_role) | Determines whether to create an IAM role | `bool` | `false` | no |
| <a name="input_dependency_update"></a> [dependency\_update](#input\_dependency\_update) | Runs helm dependency update before installing the chart. Defaults to `false` | `bool` | `null` | no |
| <a name="input_description"></a> [description](#input\_description) | Set release description attribute (visible in the history) | `string` | `null` | no |
| <a name="input_devel"></a> [devel](#input\_devel) | Use chart development versions, too. Equivalent to version '>0.0.0-0'. If version is set, this is ignored | `bool` | `null` | no |
| <a name="input_disable_openapi_validation"></a> [disable\_openapi\_validation](#input\_disable\_openapi\_validation) | If set, the installation process will not validate rendered templates against the Kubernetes OpenAPI Schema. Defaults to `false` | `bool` | `null` | no |
| <a name="input_disable_webhooks"></a> [disable\_webhooks](#input\_disable\_webhooks) | Prevent hooks from running. Defaults to `false` | `bool` | `null` | no |
| <a name="input_force_update"></a> [force\_update](#input\_force\_update) | Force resource update through delete/recreate if needed. Defaults to `false` | `bool` | `null` | no |
| <a name="input_keyring"></a> [keyring](#input\_keyring) | Location of public keys used for verification. Used only if verify is true. Defaults to `/.gnupg/pubring.gpg` in the location set by `home` | `string` | `null` | no |
| <a name="input_lint"></a> [lint](#input\_lint) | Run the helm chart linter during the plan. Defaults to `false` | `bool` | `null` | no |
| <a name="input_max_history"></a> [max\_history](#input\_max\_history) | Maximum number of release versions stored per release. Defaults to `0` (no limit) | `number` | `null` | no |
| <a name="input_max_session_duration"></a> [max\_session\_duration](#input\_max\_session\_duration) | Maximum CLI/API session duration in seconds between 3600 and 43200 | `number` | `null` | no |
| <a name="input_name"></a> [name](#input\_name) | Name of the Helm release | `string` | `""` | no |
| <a name="input_namespace"></a> [namespace](#input\_namespace) | The namespace to install the release into. Defaults to `default` | `string` | `null` | no |
| <a name="input_oidc_providers"></a> [oidc\_providers](#input\_oidc\_providers) | Map of OIDC providers where each provider map should contain the `provider_arn`, and `service_accounts` | `any` | `{}` | no |
| <a name="input_override_policy_documents"></a> [override\_policy\_documents](#input\_override\_policy\_documents) | List of IAM policy documents that are merged together into the exported document. In merging, statements with non-blank `sid`s will override statements with the same `sid` | `list(string)` | `[]` | no |
| <a name="input_policy_description"></a> [policy\_description](#input\_policy\_description) | IAM policy description | `string` | `null` | no |
| <a name="input_policy_name"></a> [policy\_name](#input\_policy\_name) | Name of IAM policy | `string` | `null` | no |
| <a name="input_policy_name_use_prefix"></a> [policy\_name\_use\_prefix](#input\_policy\_name\_use\_prefix) | Determines whether the IAM policy name (`policy_name`) is used as a prefix | `bool` | `true` | no |
| <a name="input_policy_path"></a> [policy\_path](#input\_policy\_path) | Path of IAM policy | `string` | `null` | no |
| <a name="input_policy_statements"></a> [policy\_statements](#input\_policy\_statements) | List of IAM policy [statements](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document#statement) | `any` | `[]` | no |
| <a name="input_postrender"></a> [postrender](#input\_postrender) | Configure a command to run after helm renders the manifest which can alter the manifest contents | `any` | `null` | no |
| <a name="input_recreate_pods"></a> [recreate\_pods](#input\_recreate\_pods) | Perform pods restart during upgrade/rollback. Defaults to `false` | `bool` | `null` | no |
| <a name="input_render_subchart_notes"></a> [render\_subchart\_notes](#input\_render\_subchart\_notes) | If set, render subchart notes along with the parent. Defaults to `true` | `bool` | `null` | no |
| <a name="input_replace"></a> [replace](#input\_replace) | Re-use the given name, only if that name is a deleted release which remains in the history. This is unsafe in production. Defaults to `false` | `bool` | `null` | no |
| <a name="input_repository"></a> [repository](#input\_repository) | Repository URL where to locate the requested chart | `string` | `null` | no |
| <a name="input_repository_ca_file"></a> [repository\_ca\_file](#input\_repository\_ca\_file) | The Repositories CA File | `string` | `null` | no |
| <a name="input_repository_cert_file"></a> [repository\_cert\_file](#input\_repository\_cert\_file) | The repositories cert file | `string` | `null` | no |
| <a name="input_repository_key_file"></a> [repository\_key\_file](#input\_repository\_key\_file) | The repositories cert key file | `string` | `null` | no |
| <a name="input_repository_password"></a> [repository\_password](#input\_repository\_password) | Password for HTTP basic authentication against the repository | `string` | `null` | no |
| <a name="input_repository_username"></a> [repository\_username](#input\_repository\_username) | Username for HTTP basic authentication against the repository | `string` | `null` | no |
| <a name="input_reset_values"></a> [reset\_values](#input\_reset\_values) | When upgrading, reset the values to the ones built into the chart. Defaults to `false` | `bool` | `null` | no |
| <a name="input_reuse_values"></a> [reuse\_values](#input\_reuse\_values) | When upgrading, reuse the last release's values and merge in any overrides. If `reset_values` is specified, this is ignored. Defaults to `false` | `bool` | `null` | no |
| <a name="input_role_description"></a> [role\_description](#input\_role\_description) | IAM Role description | `string` | `null` | no |
| <a name="input_role_name"></a> [role\_name](#input\_role\_name) | Name of IAM role | `string` | `null` | no |
| <a name="input_role_name_use_prefix"></a> [role\_name\_use\_prefix](#input\_role\_name\_use\_prefix) | Determines whether the IAM role name (`role_name`) is used as a prefix | `bool` | `true` | no |
| <a name="input_role_path"></a> [role\_path](#input\_role\_path) | Path of IAM role | `string` | `"/"` | no |
| <a name="input_role_permissions_boundary_arn"></a> [role\_permissions\_boundary\_arn](#input\_role\_permissions\_boundary\_arn) | Permissions boundary ARN to use for IAM role | `string` | `null` | no |
| <a name="input_role_policies"></a> [role\_policies](#input\_role\_policies) | Policies to attach to the IAM role in `{'static_name' = 'policy_arn'}` format | `map(string)` | `{}` | no |
| <a name="input_set"></a> [set](#input\_set) | Value block with custom values to be merged with the values yaml | `any` | `[]` | no |
| <a name="input_set_irsa_names"></a> [set\_irsa\_names](#input\_set\_irsa\_names) | Value annotations name where IRSA role ARN created by module will be assigned to the `value` | `list(string)` | `[]` | no |
| <a name="input_set_sensitive"></a> [set\_sensitive](#input\_set\_sensitive) | Value block with custom sensitive values to be merged with the values yaml that won't be exposed in the plan's diff | `any` | `[]` | no |
| <a name="input_skip_crds"></a> [skip\_crds](#input\_skip\_crds) | If set, no CRDs will be installed. By default, CRDs are installed if not already present. Defaults to `false` | `bool` | `null` | no |
| <a name="input_source_policy_documents"></a> [source\_policy\_documents](#input\_source\_policy\_documents) | List of IAM policy documents that are merged together into the exported document. Statements must have unique `sid`s | `list(string)` | `[]` | no |
| <a name="input_tags"></a> [tags](#input\_tags) | A map of tags to add to all resources | `map(string)` | `{}` | no |
| <a name="input_timeout"></a> [timeout](#input\_timeout) | Time in seconds to wait for any individual kubernetes operation (like Jobs for hooks). Defaults to `300` seconds | `number` | `null` | no |
| <a name="input_trust_policy_statements"></a> [trust\_policy\_statements](#input\_trust\_policy\_statements) | A list of IAM policy [statements](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document#statement) for the role trust policy | <pre>list(object({ sid = optional(string) actions = optional(list(string)) not_actions = optional(list(string)) effect = optional(string) resources = optional(list(string)) not_resources = optional(list(string)) principals = optional(list(object({ type = string identifiers = list(string) }))) not_principals = optional(list(object({ type = string identifiers = list(string) }))) condition = optional(list(object({ test = string values = list(string) variable = string }))) }))</pre> | `null` | no |
| <a name="input_values"></a> [values](#input\_values) | List of values in raw yaml to pass to helm. Values will be merged, in order, as Helm does with multiple `-f` options | `list(string)` | `null` | no |
| <a name="input_verify"></a> [verify](#input\_verify) | Verify the package before installing it. Helm uses a provenance file to verify the integrity of the chart; this must be hosted alongside the chart. For more information see the Helm Documentation. Defaults to `false` | `bool` | `null` | no |
| <a name="input_wait"></a> [wait](#input\_wait) | Will wait until all resources are in a ready state before marking the release as successful. If set to `true`, it will wait for as long as `timeout`. If set to `null` fallback on `300s` timeout. Defaults to `false` | `bool` | `false` | no |
| <a name="input_wait_for_jobs"></a> [wait\_for\_jobs](#input\_wait\_for\_jobs) | If wait is enabled, will wait until all Jobs have been completed before marking the release as successful. It will wait for as long as `timeout`. Defaults to `false` | `bool` | `null` | no |

## Outputs

| Name | Description |
|------|-------------|
| <a name="output_app_version"></a> [app\_version](#output\_app\_version) | The version number of the application being deployed |
| <a name="output_chart"></a> [chart](#output\_chart) | The name of the chart |
| <a name="output_iam_policy"></a> [iam\_policy](#output\_iam\_policy) | The policy document |
| <a name="output_iam_policy_arn"></a> [iam\_policy\_arn](#output\_iam\_policy\_arn) | The ARN assigned by AWS to this policy |
| <a name="output_iam_role_arn"></a> [iam\_role\_arn](#output\_iam\_role\_arn) | ARN of IAM role |
| <a name="output_iam_role_name"></a> [iam\_role\_name](#output\_iam\_role\_name) | Name of IAM role |
| <a name="output_iam_role_path"></a> [iam\_role\_path](#output\_iam\_role\_path) | Path of IAM role |
| <a name="output_iam_role_unique_id"></a> [iam\_role\_unique\_id](#output\_iam\_role\_unique\_id) | Unique ID of IAM role |
| <a name="output_name"></a> [name](#output\_name) | Name is the name of the release |
| <a name="output_namespace"></a> [namespace](#output\_namespace) | Name of Kubernetes namespace |
| <a name="output_revision"></a> [revision](#output\_revision) | Version is an int32 which represents the version of the release |
| <a name="output_values"></a> [values](#output\_values) | The compounded values from `values` and `set*` attributes |
| <a name="output_version"></a> [version](#output\_version) | A SemVer 2 conformant version string of the chart |

## Community

- [Code of conduct](.github/CODE_OF_CONDUCT.md)
- [Contributing](.github/CONTRIBUTING.md)
- [Security issue notifications](.github/CONTRIBUTING.md#security-issue-notifications)

## License

Apache-2.0 Licensed. See [LICENSE](https://github.com/aws-ia/terraform-aws-eks-blueprints-addon/blob/main/LICENSE).

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