Made some changes

variables.tf

@@ -64,6 +64,52 @@ variable "public_keyname" {
   default = "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDboPfi18b0We79c6mqQui+iPPL0KqUWIdm02hb6RyQ67buYPik6KRAin8hiwvgVHyBF3sdnDsaP9snSFq2QQXUtdB5MxHplIJSbdd/oREtTXHCc9OfhGEuJDqQ8ViHj1ApYlLNIohHAhJkVywkpMhLUHqLZ2DXhwVjM9XDHx0aoImwcyczzU9e4T8jtvLB+PlDRNxvCrKuf6Ir6sd1u9vHWQYR4kV61T3Z/VaeRPSF5Y50IF5ECTrNoQeR0NSRIrY6g4/hZzMisLxpybtO44jkZ7OPVwhAjfZgTTZYnrrSkdoL8HYbaEuKZC/WPvoCOfq5eF4ydpwUQomzeCD9pnOX pderuiter@MacBook-Pro-van-Patrick.local"
 }
 
+variable "security_groups" {
+  type        = list(string)
+  description = "List of Security Group IDs allowed to connect to the bastion host"
+}
+
+variable "user_data" {
+  type        = list(string)
+  default     = []
+  description = "User data content"
+}
+
+variable "root_block_device_encrypted" {
+  type        = bool
+  default     = false
+  description = "Whether to encrypt the root block device"
+}
+
+variable "root_block_device_volume_size" {
+  type        = number
+  default     = 8
+  description = "The volume size (in GiB) to provision for the root block device. It cannot be smaller than the AMI it refers to."
+}
+
+variable "metadata_http_endpoint_enabled" {
+  type        = bool
+  default     = true
+  description = "Whether the metadata service is available"
+}
+
+variable "metadata_http_put_response_hop_limit" {
+  type        = number
+  default     = 1
+  description = "The desired HTTP PUT response hop limit (between 1 and 64) for instance metadata requests."
+}
+
+variable "metadata_http_tokens_required" {
+  type        = bool
+  default     = false
+  description = "Whether or not the metadata service requires session tokens, also referred to as Instance Metadata Service Version 2."
+}
+
+variable "associate_public_ip_address" {
+  type        = bool
+  default     = true
+  description = "Whether to associate public IP to the instance."
+}
 ### Kubernetes Settings ###
 variable "kubernetes_version" {
   type        = string