terraform/AWS: Add an "EBS volume throughput" setting

Enable kdevops users to provision the maximum amount of throughput
on the extra EBS volumes added to each instance.

Signed-off-by: Chuck Lever <[email protected]>

Author: chucklever

playbooks/roles/gen_tfvars/templates/aws/terraform.tfvars.j2

@@ -10,6 +10,9 @@ aws_ebs_volume_type = "{{ terraform_aws_ebs_volume_type }}"
 {% if terraform_aws_ebs_volume_iops is defined %}
 aws_ebs_volume_iops = {{ terraform_aws_ebs_volume_iops }}
 {% endif %}
+{% if aws_ebs_volume_throughput is defined %}
+aws_ebs_volume_throughput = {{ terraform_aws_ebs_volume_throughput }}
+{% endif %}
 
 ssh_config_pubkey_file = "{{ kdevops_terraform_ssh_config_pubkey_file }}"
 ssh_config_user = "{{ kdevops_terraform_ssh_config_user }}"

terraform/aws/kconfigs/Kconfig.storage

@@ -105,6 +105,21 @@ config TERRAFORM_AWS_EBS_VOLUME_IOPS
 
 endif # TERRAFORM_AWS_EBS_VOLUME_TYPE_GP3 || TERRAFORM_AWS_EBS_ ...
 
+if TERRAFORM_AWS_EBS_VOLUME_TYPE_GP3 || TERRAFORM_AWS_EBS_VOLUME_TYPE_IO1
+
+config TERRAFORM_AWS_EBS_VOLUME_THROUGHPUT
+	int "Throughput provisioned for EBS volumes"
+	output yaml
+	default 125
+	range 125 1000
+	help
+	  This setting specifies the maximum throughput, in
+	  megabytes per second, to be provisioned for each extra EBS
+	  volume. The maximum setting allowed by AWS varies with the
+	  number and type of EBS volumes attached to each instance.
+
+endif # TERRAFORM_AWS_EBS_VOLUME_TYPE_GP3 || TERRAFORM_AWS_EBS_VOLUME_TYPE_IO1
+
 choice
 	prompt "Volume size for all EBS volumes"
 	default TERRAFORM_AWS_EBS_VOLUME_SIZE_32G

terraform/aws/kdevops_ebs_volumes/main.tf

@@ -9,6 +9,7 @@ resource "aws_ebs_volume" "kdevops_volume" {
   iops                 = var.vol_iops
   multi_attach_enabled = false
   size                 = var.vol_size
+  throughput           = var.vol_throughput
   type                 = var.vol_type
 }
 

terraform/aws/kdevops_ebs_volumes/vars.tf

@@ -23,6 +23,11 @@ variable "vol_size" {
   type        = number
 }
 
+variable "vol_throughput" {
+  description = "Provisioned throughput for each attached volume, in MBS"
+  type        = number
+}
+
 variable "vol_type" {
   description = "Device type of each attached volume"
   type        = string

terraform/aws/main.tf

@@ -146,6 +146,7 @@ module "kdevops_ebs_volumes" {
   vol_instance_id       = element(aws_instance.kdevops_instance.*.id, count.index)
   vol_iops              = var.aws_ebs_volume_iops
   vol_size              = var.aws_ebs_volume_size
+  vol_throughput        = var.aws_ebs_volume_throughput
   vol_type              = var.aws_ebs_volume_type
 }
 

terraform/aws/vars.tf

@@ -65,6 +65,12 @@ variable "aws_ebs_volume_size" {
   type        = number
 }
 
+variable "aws_ebs_volume_throughput" {
+  description = "Throughput reserved for each EBS volume"
+  type        = number
+  default     = null
+}
+
 variable "aws_ebs_volume_type" {
   description = "Type of each of the EBS volumes"
   type        = string