diff --git a/main.tf b/main.tf
index aa19da8..8638bd1 100644
--- a/main.tf
+++ b/main.tf
@@ -114,6 +114,15 @@ resource "aws_eks_node_group" "eks_ng" {
 
   labels = length(var.labels) == 0 ? null : var.labels
 
+  node_repair_config {
+    enabled = var.enable_node_auto_repair
+  }
+
+  update_config {
+    max_unavailable            = var.max_unavailable_type == "count" ? var.max_unavailable : null
+    max_unavailable_percentage = var.max_unavailable_type == "percentage" ? var.max_unavailable : null
+  }
+
   # Ensure that IAM Role permissions are created before and deleted after EKS Node Group handling.
   # Otherwise, EKS will not be able to properly delete EC2 Instances and Elastic Network Interfaces.
   depends_on = [
diff --git a/variables.tf b/variables.tf
index 574ed83..054540e 100644
--- a/variables.tf
+++ b/variables.tf
@@ -65,14 +65,14 @@ variable "capacity_type" {
 
 variable "instance_types" {
   type        = list(string)
-  default     = ["t3.medium"]
-  description = "List of type of instances to be used as EKS worker nodes"
+  default     = null
+  description = "List of type of instances to be used as EKS worker nodes. **Note:** Not required when using `launch_template` variable"
 }
 
 variable "disk_size" {
   type        = number
-  default     = 20
-  description = "Size of each EBS volume attached to EKS worker node"
+  default     = null
+  description = "Size of each EBS volume attached to EKS worker node. **Note:** Not required when using `launch_template` variable"
 }
 
 variable "labels" {
@@ -83,8 +83,8 @@ variable "labels" {
 
 variable "ami_type" {
   type        = string
-  default     = "AL2_x86_64"
-  description = "Type of AMI to be used for EKS worker node. Supported values: AL2_x86_64, AL2_ARM_64, AL2_x86_64_GPU(AMI with GPU support)"
+  default     = "AL2023_x86_64_STANDARD"
+  description = "Refer to [AWS doc](https://docs.aws.amazon.com/eks/latest/APIReference/API_Nodegroup.html#AmazonEKS-Type-Nodegroup-amiType) for supported AMI types"
 }
 
 variable "ami_release_version" {
@@ -124,6 +124,29 @@ variable "force_update_version" {
   description = "Forcefully perform version update for worker nodes if pod disruption prevents node draining"
 }
 
+variable "enable_node_auto_repair" {
+  type        = bool
+  default     = true
+  description = "Whether to enable node auto repair for the node group"
+}
+
+variable "max_unavailable" {
+  type        = number
+  default     = 1
+  description = "Maximum number/percentage of nodes that can be unavailable during the node group update"
+}
+
+variable "max_unavailable_type" {
+  type        = string
+  default     = "count"
+  description = "Type of maximum unavailable nodes. **Valid values:** count or percentage"
+
+  validation {
+    condition     = var.max_unavailable_type == "count" || var.max_unavailable_type == "percentage"
+    error_message = "Invalid value for max_unavailable_type. Valid values: count or percentage"
+  }
+}
+
 variable "tags" {
   type        = map(string)
   default     = {}