support multiple ssh keys

main.tf

@@ -87,10 +87,10 @@ resource "azurerm_virtual_machine" "vm-linux" {
     disable_password_authentication = var.enable_ssh_key
 
     dynamic ssh_keys {
-      for_each = var.enable_ssh_key ? [var.ssh_key] : []
+      for_each = var.enable_ssh_key ? var.ssh_keys : []
       content {
         path     = "/home/${var.admin_username}/.ssh/authorized_keys"
-        key_data = file(var.ssh_key)
+        key_data = file(ssh_keys.value)
       }
     }
   }

variables.tf

@@ -26,10 +26,10 @@ variable "admin_password" {
   default     = ""
 }
 
-variable "ssh_key" {
-  description = "Path to the public key to be used for ssh access to the VM.  Only used with non-Windows vms and can be left as-is even if using Windows vms. If specifying a path to a certification on a Windows machine to provision a linux vm use the / in the path versus backslash. e.g. c:/home/id_rsa.pub."
-  type        = string
-  default     = "~/.ssh/id_rsa.pub"
+variable "ssh_keys" {
+  description = "Paths to the public key files to be used for ssh access to the VM.  Only used with non-Windows vms and can be left as-is even if using Windows vms. If specifying a path to a certification on a Windows machine to provision a linux vm use the / in the path versus backslash. e.g. c:/home/id_rsa.pub."
+  type        = list(string)
+  default     = ["~/.ssh/id_rsa.pub"]
 }
 
 variable "remote_port" {