fix(launch_templates): define default for instance_metadata_tags (#747)

Co-authored-by: Bryant Biggs <[email protected]>

Author: chubchubsancho

modules/launch-templates/README.md

@@ -122,7 +122,7 @@ No modules.
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
 | <a name="input_eks_cluster_id"></a> [eks\_cluster\_id](#input\_eks\_cluster\_id) | EKS Cluster ID | `string` | n/a | yes |
-| <a name="input_launch_template_config"></a> [launch\_template\_config](#input\_launch\_template\_config) | Launch template configuration | <pre>map(object({<br>    ami                    = string<br>    launch_template_os     = optional(string)<br>    launch_template_prefix = string<br>    instance_type          = optional(string)<br>    capacity_type          = optional(string)<br>    iam_instance_profile   = optional(string)<br>    vpc_security_group_ids = optional(list(string)) # conflicts with network_interfaces<br><br>    network_interfaces = optional(list(object({<br>      public_ip       = optional(bool)<br>      security_groups = optional(list(string))<br>    })))<br><br>    block_device_mappings = list(object({<br>      device_name           = string<br>      volume_type           = string<br>      volume_size           = string<br>      delete_on_termination = optional(bool)<br>      encrypted             = optional(bool)<br>      kms_key_id            = optional(string)<br>      iops                  = optional(string)<br>      throughput            = optional(string)<br>    }))<br><br>    format_mount_nvme_disk = optional(bool)<br>    pre_userdata           = optional(string)<br>    bootstrap_extra_args   = optional(string)<br>    post_userdata          = optional(string)<br>    kubelet_extra_args     = optional(string)<br><br>    enable_metadata_options     = optional(bool)<br>    http_endpoint               = optional(string)<br>    http_tokens                 = optional(string)<br>    http_put_response_hop_limit = optional(number)<br><br>    service_ipv6_cidr = optional(string)<br>    service_ipv4_cidr = optional(string)<br><br>    monitoring = optional(bool)<br>  }))</pre> | n/a | yes |
+| <a name="input_launch_template_config"></a> [launch\_template\_config](#input\_launch\_template\_config) | Launch template configuration | <pre>map(object({<br>    ami                    = string<br>    launch_template_os     = optional(string)<br>    launch_template_prefix = string<br>    instance_type          = optional(string)<br>    capacity_type          = optional(string)<br>    iam_instance_profile   = optional(string)<br>    vpc_security_group_ids = optional(list(string)) # conflicts with network_interfaces<br><br>    network_interfaces = optional(list(object({<br>      public_ip       = optional(bool)<br>      security_groups = optional(list(string))<br>    })))<br><br>    block_device_mappings = list(object({<br>      device_name           = string<br>      volume_type           = string<br>      volume_size           = string<br>      delete_on_termination = optional(bool)<br>      encrypted             = optional(bool)<br>      kms_key_id            = optional(string)<br>      iops                  = optional(string)<br>      throughput            = optional(string)<br>    }))<br><br>    format_mount_nvme_disk = optional(bool)<br>    pre_userdata           = optional(string)<br>    bootstrap_extra_args   = optional(string)<br>    post_userdata          = optional(string)<br>    kubelet_extra_args     = optional(string)<br><br>    enable_metadata_options     = optional(bool)<br>    http_endpoint               = optional(string)<br>    http_tokens                 = optional(string)<br>    http_put_response_hop_limit = optional(number)<br>    http_protocol_ipv6          = optional(string)<br>    instance_metadata_tags      = optional(string)<br><br>    service_ipv6_cidr = optional(string)<br>    service_ipv4_cidr = optional(string)<br><br>    monitoring = optional(bool)<br>  }))</pre> | n/a | yes |
 | <a name="input_tags"></a> [tags](#input\_tags) | Additional tags (e.g. `map('BusinessUnit`,`XYZ`) | `map(string)` | `{}` | no |
 
 ## Outputs

modules/launch-templates/main.tf

@@ -84,8 +84,8 @@ resource "aws_launch_template" "this" {
       http_endpoint               = try(each.value.http_endpoint, "enabled")
       http_tokens                 = try(each.value.http_tokens, "required")
       http_put_response_hop_limit = try(each.value.http_put_response_hop_limit, 2)
-      http_protocol_ipv6          = try(each.value.http_protocol_ipv6, null)
-      instance_metadata_tags      = try(each.value.instance_metadata_tags, null)
+      http_protocol_ipv6          = try(each.value.http_protocol_ipv6, "disabled")
+      instance_metadata_tags      = try(each.value.instance_metadata_tags, "disabled")
     }
   }
 

modules/launch-templates/variables.tf

@@ -35,6 +35,8 @@ variable "launch_template_config" {
     http_endpoint               = optional(string)
     http_tokens                 = optional(string)
     http_put_response_hop_limit = optional(number)
+    http_protocol_ipv6          = optional(string)
+    instance_metadata_tags      = optional(string)
 
     service_ipv6_cidr = optional(string)
     service_ipv4_cidr = optional(string)