Moved to terraform module

asg.tf → k3s_cluster/asg.tf

@@ -21,31 +21,20 @@ resource "aws_autoscaling_group" "k3s_servers_asg" {
         version            = "$Latest"
       }
 
-      override {
-        instance_type     = "t3.large"
-        weighted_capacity = "1"
+      dynamic "override" {
+        for_each = var.instance_types
+        content {
+          instance_type     = override.value
+          weighted_capacity = "1"
+        }
       }
 
-      override {
-        instance_type     = "t2.large"
-        weighted_capacity = "1"
-      }
-
-      override {
-        instance_type     = "m4.large"
-        weighted_capacity = "1"
-      }
-
-      override {
-        instance_type     = "t3a.large"
-        weighted_capacity = "1"
-      }
     }
   }
 
-  desired_capacity          = 3
-  min_size                  = 3
-  max_size                  = 4
+  desired_capacity          = var.k3s_server_desired_capacity
+  min_size                  = var.k3s_server_min_capacity
+  max_size                  = var.k3s_server_max_capacity
   health_check_grace_period = 300
   health_check_type         = "EC2"
   force_delete              = true
@@ -86,31 +75,20 @@ resource "aws_autoscaling_group" "k3s_workers_asg" {
         version            = "$Latest"
       }
 
-      override {
-        instance_type     = "t3.large"
-        weighted_capacity = "1"
+      dynamic "override" {
+        for_each = var.instance_types
+        content {
+          instance_type     = override.value
+          weighted_capacity = "1"
+        }
       }
 
-      override {
-        instance_type     = "t2.large"
-        weighted_capacity = "1"
-      }
-
-      override {
-        instance_type     = "m4.large"
-        weighted_capacity = "1"
-      }
-
-      override {
-        instance_type     = "t3a.large"
-        weighted_capacity = "1"
-      }
     }
   }
 
-  desired_capacity          = 3
-  min_size                  = 3
-  max_size                  = 4
+  desired_capacity          = var.k3s_worker_desired_capacity
+  min_size                  = var.k3s_worker_min_capacity
+  max_size                  = var.k3s_worker_max_capacity
   health_check_grace_period = 300
   health_check_type         = "EC2"
   force_delete              = true

launchtemplate.tf → k3s_cluster/launchtemplate.tf

@@ -1,7 +1,7 @@
 resource "aws_launch_template" "k3s_server" {
   name_prefix   = "k3s_server_tpl"
   image_id      = var.AMIS[var.AWS_REGION]
-  instance_type = "t3.large"
+  instance_type = var.default_instance_type
   user_data     = data.template_cloudinit_config.k3s_server.rendered
 
   iam_instance_profile {
@@ -28,7 +28,7 @@ resource "aws_launch_template" "k3s_server" {
 resource "aws_launch_template" "k3s_agent" {
   name_prefix   = "k3s_agent_tpl"
   image_id      = var.AMIS[var.AWS_REGION]
-  instance_type = "t3.large"
+  instance_type = var.default_instance_type
   user_data     = data.template_cloudinit_config.k3s_agent.rendered
 
   iam_instance_profile {

securitygroup.tf → k3s_cluster/securitygroup.tf

@@ -18,8 +18,8 @@ resource "aws_security_group" "allow-strict" {
   }
 
   ingress {
-    from_port   = 6443
-    to_port     = 6443
+    from_port   = var.kube_api_port
+    to_port     = var.kube_api_port
     protocol    = "tcp"
     cidr_blocks = [var.vpc_subnet_cidr]
   }

k3s_cluster/vars.tf

@@ -0,0 +1,118 @@
+variable "AWS_REGION" {
+  type = string
+}
+
+variable "AMIS" {
+  type = map(string)
+  default = {
+    us-east-1 = "ami-0ae74ae9c43584639"
+    us-west-2 = "ami-09f5b7791a4e85729"
+    eu-west-1 = "ami-081ff4b9aa4e81a08" # ami-0da36f7f059b7086e
+  }
+}
+
+variable "PATH_TO_PUBLIC_KEY" {
+  type        = string
+  default     = "~/.ssh/id_rsa.pub"
+  description = "Path to your public key"
+}
+
+variable "PATH_TO_PRIVATE_KEY" {
+  type        = string
+  default     = "~/.ssh/id_rsa"
+  description = "Path to your private key"
+}
+
+variable "vpc_id" {
+  type        = string
+  description = "The vpc id"
+}
+
+variable "instance_profile_name" {
+  type        = string
+  description = "The name of the instance profile to use"
+}
+
+variable "my_public_ip_cidr" {
+  type        = string
+  description = "My public ip CIDR"
+}
+
+variable "vpc_subnet_cidr" {
+  type        = string
+  description = "VPC subnet CIDR"
+}
+
+variable "vpc_subnets" {
+  type        = list(any)
+  description = "The vpc subnets ids"
+}
+
+variable "default_instance_type" {
+  type        = string
+  default     = "t3.large"
+  description = "Instance type to be used"
+}
+
+variable "instance_types" {
+  description = "List of instance types to use"
+  type        = map(string)
+  default = {
+    asg_instance_type_1 = "t3.large"
+    asg_instance_type_3 = "m4.large"
+    asg_instance_type_4 = "t3a.large"
+  }
+}
+
+variable "kube_api_port" {
+  type        = number
+  default     = 6443
+  description = "Kubeapi Port"
+}
+
+variable "k3s_server_desired_capacity" {
+  type        = number
+  default     = 3
+  description = "K3s server ASG desired capacity"
+}
+
+variable "k3s_server_min_capacity" {
+  type        = number
+  default     = 3
+  description = "K3s server ASG min capacity"
+}
+
+variable "k3s_server_max_capacity" {
+  type        = number
+  default     = 4
+  description = "K3s server ASG max capacity"
+}
+
+variable "k3s_worker_desired_capacity" {
+  type        = number
+  default     = 3
+  description = "K3s server ASG desired capacity"
+}
+
+variable "k3s_worker_min_capacity" {
+  type        = number
+  default     = 3
+  description = "K3s server ASG min capacity"
+}
+
+variable "k3s_worker_max_capacity" {
+  type        = number
+  default     = 4
+  description = "K3s server ASG max capacity"
+}
+
+variable "cluster_name" {
+  type        = string
+  default     = "k3s-cluster"
+  description = "Cluster name"
+}
+
+variable "k3s_token" {
+  type        = string
+  description = "Override to set k3s cluster registration token"
+}

main.tf

@@ -0,0 +1,25 @@
+variable "AWS_ACCESS_KEY" {
+
+}
+
+variable "AWS_SECRET_KEY" {
+
+}
+
+variable "AWS_REGION" {
+  type        = string
+  default     = "<change_me>"
+  description = "AWS Zone"
+}
+
+module "k3s_cluster" {
+  AWS_REGION          = "<change_me>"
+  instance_profile_name = "AmazonEC2ReadOnlyAccess"
+  my_public_ip_cidr   = "<change_me>"
+  vpc_id              = "<change_me>"
+  vpc_subnets         = ["<change_me>", "<change_me>", "<change_me>"]
+  vpc_subnet_cidr     = "<change_me>"
+  cluster_name        = "k3s-cluster"
+  k3s_token           = "<change_me>"
+  source              = "./k3s_cluster/"
+}