availability zone distribution (#282)

Author: magreenbaum

README.md

@@ -231,13 +231,13 @@ Note: the default behavior of the module is to create an autoscaling group and l
 | Name | Version |
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.3 |
-| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 5.55 |
+| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 5.82.1 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
-| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 5.55 |
+| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 5.82.1 |
 
 ## Modules
 
@@ -264,6 +264,7 @@ No modules.
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
 | <a name="input_autoscaling_group_tags"></a> [autoscaling\_group\_tags](#input\_autoscaling\_group\_tags) | A map of additional tags to add to the autoscaling group | `map(string)` | `{}` | no |
+| <a name="input_availability_zone_distribution"></a> [availability\_zone\_distribution](#input\_availability\_zone\_distribution) | A map of configuration for capacity distribution across availability zones | `any` | `{}` | no |
 | <a name="input_availability_zones"></a> [availability\_zones](#input\_availability\_zones) | A list of one or more availability zones for the group. Used for EC2-Classic and default subnets when not specified with `vpc_zone_identifier` argument. Conflicts with `vpc_zone_identifier` | `list(string)` | `null` | no |
 | <a name="input_block_device_mappings"></a> [block\_device\_mappings](#input\_block\_device\_mappings) | Specify volumes to attach to the instance besides the volumes specified by the AMI | `list(any)` | `[]` | no |
 | <a name="input_capacity_rebalance"></a> [capacity\_rebalance](#input\_capacity\_rebalance) | Indicates whether capacity rebalance is enabled | `bool` | `null` | no |

examples/complete/README.md

@@ -30,13 +30,13 @@ Note that this example may create resources which cost money. Run `terraform des
 | Name | Version |
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.3 |
-| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 5.55 |
+| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 5.82.1 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
-| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 5.55 |
+| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 5.82.1 |
 
 ## Modules
 

examples/complete/versions.tf

@@ -4,7 +4,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = ">= 5.55"
+      version = ">= 5.82.1"
     }
   }
 }

main.tf

@@ -391,6 +391,13 @@ resource "aws_autoscaling_group" "this" {
   service_linked_role_arn          = var.service_linked_role_arn
   ignore_failed_scaling_activities = var.ignore_failed_scaling_activities
 
+  dynamic "availability_zone_distribution" {
+    for_each = length(var.availability_zone_distribution) > 0 ? [var.availability_zone_distribution] : []
+    content {
+      capacity_distribution_strategy = availability_zone_distribution.value.capacity_distribution_strategy
+    }
+  }
+
   dynamic "initial_lifecycle_hook" {
     for_each = var.initial_lifecycle_hooks
     content {
@@ -682,6 +689,13 @@ resource "aws_autoscaling_group" "idc" {
   service_linked_role_arn          = var.service_linked_role_arn
   ignore_failed_scaling_activities = var.ignore_failed_scaling_activities
 
+  dynamic "availability_zone_distribution" {
+    for_each = length(var.availability_zone_distribution) > 0 ? [var.availability_zone_distribution] : []
+    content {
+      capacity_distribution_strategy = availability_zone_distribution.value.capacity_distribution_strategy
+    }
+  }
+
   dynamic "initial_lifecycle_hook" {
     for_each = var.initial_lifecycle_hooks
     content {

variables.tf

@@ -49,6 +49,12 @@ variable "availability_zones" {
   default     = null
 }
 
+variable "availability_zone_distribution" {
+  description = "A map of configuration for capacity distribution across availability zones"
+  type        = any
+  default     = {}
+}
+
 variable "vpc_zone_identifier" {
   description = "A list of subnet IDs to launch resources in. Subnets automatically determine which availability zones the group will reside. Conflicts with `availability_zones`"
   type        = list(string)

versions.tf

@@ -4,7 +4,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = ">= 5.55"
+      version = ">= 5.82.1"
     }
   }
 }