Support Terraform 0.15

.github/auto-release.yml

@@ -46,7 +46,7 @@ template: |
 
 replacers:
 # Remove irrelevant information from Renovate bot
-- search: '/---\s+^#.*(Renovate configuration|Configuration)(?:.|\n)*?This PR has been generated .*/gm'
+- search: '/(?<=---\s+)+^#.*(Renovate configuration|Configuration)(?:.|\n)*?This PR has been generated .*/gm'
   replace: ''
 # Remove Renovate bot banner image
 - search: '/\[!\[[^\]]*Renovate\][^\]]*\](\([^)]*\))?\s*\n+/gm'

.github/workflows/auto-release.yml

@@ -3,7 +3,9 @@ name: auto-release
 on:
   push:
     branches:
+      - main
       - master
+      - production
 
 jobs:
   publish:
@@ -14,7 +16,7 @@ jobs:
         id: get-merged-pull-request
         with:
           github_token: ${{ secrets.PUBLIC_REPO_ACCESS_TOKEN }}
-      # Drafts your next Release notes as Pull Requests are merged into "master"
+      # Drafts your next Release notes as Pull Requests are merged into "main"
       - uses: release-drafter/release-drafter@v5
         if: "!contains(steps.get-merged-pull-request.outputs.labels, 'no-release')"
         with:

README.md

@@ -1,3 +1,4 @@
+
 <!-- markdownlint-disable -->
 # terraform-aws-ec2-autoscale-group [![Latest Release](https://img.shields.io/github/release/cloudposse/terraform-aws-ec2-autoscale-group.svg)](https://github.com/cloudposse/terraform-aws-ec2-autoscale-group/releases/latest) [![Slack Community](https://slack.cloudposse.com/badge.svg)](https://slack.cloudposse.com)
 <!-- markdownlint-restore -->
@@ -32,6 +33,8 @@ Terraform module to provision [Auto Scaling Group](https://www.terraform.io/docs
 The module also creates AutoScaling Policies and CloudWatch Metric Alarms to monitor CPU utilization on the EC2 instances and scale the number of instance in the AutoScaling Group up or down.
 If you don't want to use the provided functionality, or want to provide your own policies, disable it by setting the variable `autoscaling_policies_enabled` to `false`.
 
+At present, although you can set the created AutoScaling Policy type to any legal value, in practice [only `SimpleScaling` is supported](https://github.com/cloudposse/terraform-aws-ec2-autoscale-group/issues/55).
+To use a `StepScaling` or `TargetTrackingScaling` policy, create it yourself and then pass it in the `alarm_actions` field of `custom_alarms`.
 
 ---
 
@@ -63,7 +66,6 @@ We literally have [*hundreds of terraform modules*][terraform_modules] that are
 
 
 
-
 ## Security & Compliance [<img src="https://cloudposse.com/wp-content/uploads/2020/11/bridgecrew.svg" width="250" align="right" />](https://bridgecrew.io/)
 
 Security scanning is graciously provided by Bridgecrew. Bridgecrew is the leading fully hosted, cloud-native solution providing continuous Terraform security and compliance.
@@ -299,11 +301,11 @@ Available targets:
 | <a name="input_regex_replace_chars"></a> [regex\_replace\_chars](#input\_regex\_replace\_chars) | Regex to replace chars with empty string in `namespace`, `environment`, `stage` and `name`.<br>If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits. | `string` | `null` | no |
 | <a name="input_scale_down_adjustment_type"></a> [scale\_down\_adjustment\_type](#input\_scale\_down\_adjustment\_type) | Specifies whether the adjustment is an absolute number or a percentage of the current capacity. Valid values are `ChangeInCapacity`, `ExactCapacity` and `PercentChangeInCapacity` | `string` | `"ChangeInCapacity"` | no |
 | <a name="input_scale_down_cooldown_seconds"></a> [scale\_down\_cooldown\_seconds](#input\_scale\_down\_cooldown\_seconds) | The amount of time, in seconds, after a scaling activity completes and before the next scaling activity can start | `number` | `300` | no |
-| <a name="input_scale_down_policy_type"></a> [scale\_down\_policy\_type](#input\_scale\_down\_policy\_type) | The scalling policy type, either `SimpleScaling`, `StepScaling` or `TargetTrackingScaling` | `string` | `"SimpleScaling"` | no |
+| <a name="input_scale_down_policy_type"></a> [scale\_down\_policy\_type](#input\_scale\_down\_policy\_type) | The scaling policy type. Currently only `SimpleScaling` is supported | `string` | `"SimpleScaling"` | no |
 | <a name="input_scale_down_scaling_adjustment"></a> [scale\_down\_scaling\_adjustment](#input\_scale\_down\_scaling\_adjustment) | The number of instances by which to scale. `scale_down_scaling_adjustment` determines the interpretation of this number (e.g. as an absolute number or as a percentage of the existing Auto Scaling group size). A positive increment adds to the current capacity and a negative value removes from the current capacity | `number` | `-1` | no |
 | <a name="input_scale_up_adjustment_type"></a> [scale\_up\_adjustment\_type](#input\_scale\_up\_adjustment\_type) | Specifies whether the adjustment is an absolute number or a percentage of the current capacity. Valid values are `ChangeInCapacity`, `ExactCapacity` and `PercentChangeInCapacity` | `string` | `"ChangeInCapacity"` | no |
 | <a name="input_scale_up_cooldown_seconds"></a> [scale\_up\_cooldown\_seconds](#input\_scale\_up\_cooldown\_seconds) | The amount of time, in seconds, after a scaling activity completes and before the next scaling activity can start | `number` | `300` | no |
-| <a name="input_scale_up_policy_type"></a> [scale\_up\_policy\_type](#input\_scale\_up\_policy\_type) | The scalling policy type, either `SimpleScaling`, `StepScaling` or `TargetTrackingScaling` | `string` | `"SimpleScaling"` | no |
+| <a name="input_scale_up_policy_type"></a> [scale\_up\_policy\_type](#input\_scale\_up\_policy\_type) | The scaling policy type. Currently only `SimpleScaling` is supported | `string` | `"SimpleScaling"` | no |
 | <a name="input_scale_up_scaling_adjustment"></a> [scale\_up\_scaling\_adjustment](#input\_scale\_up\_scaling\_adjustment) | The number of instances by which to scale. `scale_up_adjustment_type` determines the interpretation of this number (e.g. as an absolute number or as a percentage of the existing Auto Scaling group size). A positive increment adds to the current capacity and a negative value removes from the current capacity | `number` | `1` | no |
 | <a name="input_security_group_ids"></a> [security\_group\_ids](#input\_security\_group\_ids) | A list of associated security group IDs | `list(string)` | `[]` | no |
 | <a name="input_service_linked_role_arn"></a> [service\_linked\_role\_arn](#input\_service\_linked\_role\_arn) | The ARN of the service-linked role that the ASG will use to call other AWS services | `string` | `""` | no |

README.yaml

@@ -42,6 +42,10 @@ description: |-
 
   The module also creates AutoScaling Policies and CloudWatch Metric Alarms to monitor CPU utilization on the EC2 instances and scale the number of instance in the AutoScaling Group up or down.
   If you don't want to use the provided functionality, or want to provide your own policies, disable it by setting the variable `autoscaling_policies_enabled` to `false`.
+
+  At present, although you can set the created AutoScaling Policy type to any legal value, in practice [only `SimpleScaling` is supported](https://github.com/cloudposse/terraform-aws-ec2-autoscale-group/issues/55).
+  To use a `StepScaling` or `TargetTrackingScaling` policy, create it yourself and then pass it in the `alarm_actions` field of `custom_alarms`.
+
 # How to use this project
 usage: |2-
 

docs/terraform.md

@@ -94,11 +94,11 @@
 | <a name="input_regex_replace_chars"></a> [regex\_replace\_chars](#input\_regex\_replace\_chars) | Regex to replace chars with empty string in `namespace`, `environment`, `stage` and `name`.<br>If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits. | `string` | `null` | no |
 | <a name="input_scale_down_adjustment_type"></a> [scale\_down\_adjustment\_type](#input\_scale\_down\_adjustment\_type) | Specifies whether the adjustment is an absolute number or a percentage of the current capacity. Valid values are `ChangeInCapacity`, `ExactCapacity` and `PercentChangeInCapacity` | `string` | `"ChangeInCapacity"` | no |
 | <a name="input_scale_down_cooldown_seconds"></a> [scale\_down\_cooldown\_seconds](#input\_scale\_down\_cooldown\_seconds) | The amount of time, in seconds, after a scaling activity completes and before the next scaling activity can start | `number` | `300` | no |
-| <a name="input_scale_down_policy_type"></a> [scale\_down\_policy\_type](#input\_scale\_down\_policy\_type) | The scalling policy type, either `SimpleScaling`, `StepScaling` or `TargetTrackingScaling` | `string` | `"SimpleScaling"` | no |
+| <a name="input_scale_down_policy_type"></a> [scale\_down\_policy\_type](#input\_scale\_down\_policy\_type) | The scaling policy type. Currently only `SimpleScaling` is supported | `string` | `"SimpleScaling"` | no |
 | <a name="input_scale_down_scaling_adjustment"></a> [scale\_down\_scaling\_adjustment](#input\_scale\_down\_scaling\_adjustment) | The number of instances by which to scale. `scale_down_scaling_adjustment` determines the interpretation of this number (e.g. as an absolute number or as a percentage of the existing Auto Scaling group size). A positive increment adds to the current capacity and a negative value removes from the current capacity | `number` | `-1` | no |
 | <a name="input_scale_up_adjustment_type"></a> [scale\_up\_adjustment\_type](#input\_scale\_up\_adjustment\_type) | Specifies whether the adjustment is an absolute number or a percentage of the current capacity. Valid values are `ChangeInCapacity`, `ExactCapacity` and `PercentChangeInCapacity` | `string` | `"ChangeInCapacity"` | no |
 | <a name="input_scale_up_cooldown_seconds"></a> [scale\_up\_cooldown\_seconds](#input\_scale\_up\_cooldown\_seconds) | The amount of time, in seconds, after a scaling activity completes and before the next scaling activity can start | `number` | `300` | no |
-| <a name="input_scale_up_policy_type"></a> [scale\_up\_policy\_type](#input\_scale\_up\_policy\_type) | The scalling policy type, either `SimpleScaling`, `StepScaling` or `TargetTrackingScaling` | `string` | `"SimpleScaling"` | no |
+| <a name="input_scale_up_policy_type"></a> [scale\_up\_policy\_type](#input\_scale\_up\_policy\_type) | The scaling policy type. Currently only `SimpleScaling` is supported | `string` | `"SimpleScaling"` | no |
 | <a name="input_scale_up_scaling_adjustment"></a> [scale\_up\_scaling\_adjustment](#input\_scale\_up\_scaling\_adjustment) | The number of instances by which to scale. `scale_up_adjustment_type` determines the interpretation of this number (e.g. as an absolute number or as a percentage of the existing Auto Scaling group size). A positive increment adds to the current capacity and a negative value removes from the current capacity | `number` | `1` | no |
 | <a name="input_security_group_ids"></a> [security\_group\_ids](#input\_security\_group\_ids) | A list of associated security group IDs | `list(string)` | `[]` | no |
 | <a name="input_service_linked_role_arn"></a> [service\_linked\_role\_arn](#input\_service\_linked\_role\_arn) | The ARN of the service-linked role that the ASG will use to call other AWS services | `string` | `""` | no |

examples/complete/main.tf

@@ -49,6 +49,23 @@ module "autoscale_group" {
   cpu_utilization_high_threshold_percent = var.cpu_utilization_high_threshold_percent
   cpu_utilization_low_threshold_percent  = var.cpu_utilization_low_threshold_percent
 
+  block_device_mappings = [
+    {
+      device_name  = "/dev/sdb"
+      no_device    = null
+      virtual_name = null
+      ebs = {
+        delete_on_termination = true
+        encrypted             = true
+        volume_size           = 8
+        volume_type           = "gp2"
+        iops                  = null
+        kms_key_id            = null
+        snapshot_id           = null
+      }
+    }
+  ]
+
   context = module.this.context
 }
 

main.tf

@@ -11,15 +11,15 @@ resource "aws_launch_template" "default" {
       virtual_name = lookup(block_device_mappings.value, "virtual_name", null)
 
       dynamic "ebs" {
-        for_each = flatten(list(lookup(block_device_mappings.value, "ebs", [])))
+        for_each = lookup(block_device_mappings.value, "ebs", null) == null ? [] : ["ebs"]
         content {
-          delete_on_termination = lookup(ebs.value, "delete_on_termination", null)
-          encrypted             = lookup(ebs.value, "encrypted", null)
-          iops                  = lookup(ebs.value, "iops", null)
-          kms_key_id            = lookup(ebs.value, "kms_key_id", null)
-          snapshot_id           = lookup(ebs.value, "snapshot_id", null)
-          volume_size           = lookup(ebs.value, "volume_size", null)
-          volume_type           = lookup(ebs.value, "volume_type", null)
+          delete_on_termination = lookup(block_device_mappings.value.ebs, "delete_on_termination", null)
+          encrypted             = lookup(block_device_mappings.value.ebs, "encrypted", null)
+          iops                  = lookup(block_device_mappings.value.ebs, "iops", null)
+          kms_key_id            = lookup(block_device_mappings.value.ebs, "kms_key_id", null)
+          snapshot_id           = lookup(block_device_mappings.value.ebs, "snapshot_id", null)
+          volume_size           = lookup(block_device_mappings.value.ebs, "volume_size", null)
+          volume_type           = lookup(block_device_mappings.value.ebs, "volume_type", null)
         }
       }
     }

variables.tf

@@ -323,7 +323,7 @@ variable "scale_up_adjustment_type" {
 variable "scale_up_policy_type" {
   type        = string
   default     = "SimpleScaling"
-  description = "The scalling policy type, either `SimpleScaling`, `StepScaling` or `TargetTrackingScaling`"
+  description = "The scaling policy type. Currently only `SimpleScaling` is supported"
 }
 
 variable "scale_down_cooldown_seconds" {
@@ -347,7 +347,7 @@ variable "scale_down_adjustment_type" {
 variable "scale_down_policy_type" {
   type        = string
   default     = "SimpleScaling"
-  description = "The scalling policy type, either `SimpleScaling`, `StepScaling` or `TargetTrackingScaling`"
+  description = "The scaling policy type. Currently only `SimpleScaling` is supported"
 }
 
 variable "cpu_utilization_high_evaluation_periods" {