# Instance refresh example

This is EKS example using [instance refresh](https://aws.amazon.com/blogs/compute/introducing-instance-refresh-for-ec2-auto-scaling/) feature for worker groups.

See [the official documentation](https://docs.aws.amazon.com/autoscaling/ec2/userguide/asg-instance-refresh.html) for more details.

## Usage

To run this example you need to execute:

```bash
$ terraform init
$ terraform plan
$ terraform apply
```

Note that this example may create resources which cost money. Run `terraform destroy` when you don't need these resources.

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## Requirements

| Name | Version |
|------|---------|
| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13.1 |
| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 3.22.0 |
| <a name="requirement_helm"></a> [helm](#requirement\_helm) | ~> 2.0 |
| <a name="requirement_kubernetes"></a> [kubernetes](#requirement\_kubernetes) | ~> 2.0 |
| <a name="requirement_local"></a> [local](#requirement\_local) | >= 1.4 |
| <a name="requirement_random"></a> [random](#requirement\_random) | >= 2.1 |

## Providers

| Name | Version |
|------|---------|
| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 3.22.0 |
| <a name="provider_helm"></a> [helm](#provider\_helm) | ~> 2.0 |
| <a name="provider_random"></a> [random](#provider\_random) | >= 2.1 |

## Modules

| Name | Source | Version |
|------|--------|---------|
| <a name="module_aws_node_termination_handler_role"></a> [aws\_node\_termination\_handler\_role](#module\_aws\_node\_termination\_handler\_role) | terraform-aws-modules/iam/aws//modules/iam-assumable-role-with-oidc | 4.1.0 |
| <a name="module_aws_node_termination_handler_sqs"></a> [aws\_node\_termination\_handler\_sqs](#module\_aws\_node\_termination\_handler\_sqs) | terraform-aws-modules/sqs/aws | ~> 3.0.0 |
| <a name="module_eks"></a> [eks](#module\_eks) | ../.. |  |
| <a name="module_vpc"></a> [vpc](#module\_vpc) | terraform-aws-modules/vpc/aws | ~> 3.0 |

## Resources

| Name | Type |
|------|------|
| [aws_autoscaling_lifecycle_hook.aws_node_termination_handler](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/autoscaling_lifecycle_hook) | resource |
| [aws_cloudwatch_event_rule.aws_node_termination_handler_asg](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/cloudwatch_event_rule) | resource |
| [aws_cloudwatch_event_rule.aws_node_termination_handler_spot](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/cloudwatch_event_rule) | resource |
| [aws_cloudwatch_event_target.aws_node_termination_handler_asg](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/cloudwatch_event_target) | resource |
| [aws_cloudwatch_event_target.aws_node_termination_handler_spot](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/cloudwatch_event_target) | resource |
| [aws_iam_policy.aws_node_termination_handler](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_policy) | resource |
| [helm_release.aws_node_termination_handler](https://registry.terraform.io/providers/hashicorp/helm/latest/docs/resources/release) | resource |
| [random_string.suffix](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/string) | resource |
| [aws_availability_zones.available](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/availability_zones) | data source |
| [aws_caller_identity.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/caller_identity) | data source |
| [aws_eks_cluster.cluster](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/eks_cluster) | data source |
| [aws_eks_cluster_auth.cluster](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/eks_cluster_auth) | data source |
| [aws_iam_policy_document.aws_node_termination_handler](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
| [aws_iam_policy_document.aws_node_termination_handler_events](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
| [aws_region.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/region) | data source |

## Inputs

No inputs.

## Outputs

| Name | Description |
|------|-------------|
| <a name="output_cluster_endpoint"></a> [cluster\_endpoint](#output\_cluster\_endpoint) | Endpoint for EKS control plane. |
| <a name="output_cluster_security_group_id"></a> [cluster\_security\_group\_id](#output\_cluster\_security\_group\_id) | Security group ids attached to the cluster control plane. |
| <a name="output_config_map_aws_auth"></a> [config\_map\_aws\_auth](#output\_config\_map\_aws\_auth) | A kubernetes configuration to authenticate to this EKS cluster. |
| <a name="output_kubectl_config"></a> [kubectl\_config](#output\_kubectl\_config) | kubectl config as generated by the module. |
| <a name="output_sqs_queue_asg_notification_arn"></a> [sqs\_queue\_asg\_notification\_arn](#output\_sqs\_queue\_asg\_notification\_arn) | SQS queue ASG notification ARN |
| <a name="output_sqs_queue_asg_notification_url"></a> [sqs\_queue\_asg\_notification\_url](#output\_sqs\_queue\_asg\_notification\_url) | SQS queue ASG notification URL |
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