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Added vars to reuse existing IAM role instead of creating a new one #388

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Added vars to reuse existing IAM role instead of creating a new one #388

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6 changes: 3 additions & 3 deletions main.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -567,7 +567,7 @@ data "aws_iam_policy_document" "assume_role_policy" {
}

resource "aws_iam_role" "this" {
count = var.create && var.create_iam_instance_profile ? 1 : 0
count = var.create && var.create_iam_instance_profile && !var.use_existing_iam_role ? 1 : 0

name = var.iam_role_use_name_prefix ? null : local.iam_role_name
name_prefix = var.iam_role_use_name_prefix ? "${local.iam_role_name}-" : null
Expand All @@ -582,7 +582,7 @@ resource "aws_iam_role" "this" {
}

resource "aws_iam_role_policy_attachment" "this" {
for_each = { for k, v in var.iam_role_policies : k => v if var.create && var.create_iam_instance_profile }
for_each = { for k, v in var.iam_role_policies : k => v if var.create && var.create_iam_instance_profile && !var.use_existing_iam_role }

policy_arn = each.value
role = aws_iam_role.this[0].name
Expand All @@ -591,7 +591,7 @@ resource "aws_iam_role_policy_attachment" "this" {
resource "aws_iam_instance_profile" "this" {
count = var.create && var.create_iam_instance_profile ? 1 : 0

role = aws_iam_role.this[0].name
role = var.use_existing_iam_role ? var.existing_iam_role_name : aws_iam_role.this[0].name

name = var.iam_role_use_name_prefix ? null : local.iam_role_name
name_prefix = var.iam_role_use_name_prefix ? "${local.iam_role_name}-" : null
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12 changes: 12 additions & 0 deletions variables.tf
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Expand Up @@ -367,6 +367,18 @@ variable "create_iam_instance_profile" {
default = false
}

variable "use_existing_iam_role" {
description = "Whether to use an existing IAM role instead of creating a new one."
type = bool
default = false
}

variable "existing_iam_role_name" {
description = "Name of the existing IAM role to use for the instance profile."
type = string
default = null
}

variable "iam_role_name" {
description = "Name to use on IAM role created"
type = string
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