added vars for command line

README.md

@@ -4,10 +4,7 @@ Launches EC2 instance, creates private key, and saves it on the machine.
 
 Usage:
 ```
-wait for it
+terraform apply -var="instance_type=t2.nano" -var="instance_name=k3s-box" -var="instance_ami=ami-0889a44b331db0194" -var="availability_zone=us-east-1a" -var="create_ebs_block_device=false" - var="enable_ingress_http=false" -auto-approve
 ```
 
-Help:
+Defaults of vars are set to the ones provided in "Usage"
-```
-wait for it
-```

ec2.tf

@@ -1,21 +1,51 @@
+variable "instance_type" {
+  type = string
+  default = "t2.nano"
+}
+
+variable "instance_name" {
+  type = string
+  default = "k3s-box"
+}
+
+variable "instance_ami" {
+  type = string
+  default = "ami-0889a44b331db0194" # amazon linux us-east-1
+}
+
+variable "availability_zone" {
+  type = string
+  default = "us-east-1a"
+}
+
+variable "create_ebs_block_device" {
+  type = bool
+  default = false
+}
+
+variable "enable_ingress_http" {
+  type = bool
+  default = false
+}
+
 resource "aws_instance" "k3s_box" {
-  ami = "ami-0889a44b331db0194" # amazon linux us-east-1
+  ami = var.instance_ami
-  instance_type = "t3.small"
+  instance_type = var.instance_type
   associate_public_ip_address = true
   key_name = aws_key_pair.k3s_box_kp.key_name
 
   ebs_block_device {
     device_name = "/dev/sdx"
-
     volume_size = 10
     volume_type = "gp2"
     delete_on_termination = true
+    count = var.create_ebs_block_device ? 1 : 0
   }
 
   user_data = "${file("./script.sh")}"
 
   tags = {
-    Name = "k3s-box"
+    Name = var.instance_name
   }
 }
 
@@ -30,7 +60,7 @@ resource "aws_vpc" "k3s_box_vpc" {
 resource "aws_subnet" "k3s_box_public_subnet" {
   vpc_id = aws_vpc.k3s_box_vpc.id
   cidr_block = "10.0.1.0/24"
-  availability_zone = "us-east-1a"
+  availability_zone = var.availability_zone
 
   tags = {
     Name = "k3s-box-public-subnet"
@@ -40,7 +70,7 @@ resource "aws_subnet" "k3s_box_public_subnet" {
 resource "aws_subnet" "k3s_box_private_subnet" {
   vpc_id = aws_vpc.k3s_box_vpc.id
   cidr_block = "10.0.2.0/24"
-  availability_zone = "us-east-1a"
+  availability_zone = var.availability_zone
 
   tags = {
     Name = "k3s-box-private-subnet"
@@ -93,23 +123,23 @@ resource "aws_security_group" "k3s_box_sg" {
   }
 
   # ALLOWS HTTPS and HTTP from anywhere
-#   ingress {
+  ingress {
-#     description = "HTTPS"
+    description = "HTTPS"
-#     from_port = 443
+    from_port = 443
-#     to_port = 443
+    to_port = 443
-#     protocol = "tcp"
+    protocol = "tcp"
-#     cidr_blocks = ["0.0.0.0/0"]
+    cidr_blocks = var.enable_ingress_http ? ["0.0.0.0/0"] : []
-#     ipv6_cidr_blocks = ["::/0"]
+    ipv6_cidr_blocks = var.enable_ingress_http ? ["::/0"] : []
-#   }
+  }
 
-#   ingress {
+  ingress {
-#     description = "HTTP"
+    description = "HTTP"
-#     from_port = 80
+    from_port = 80
-#     to_port = 80
+    to_port = 80
-#     protocol = "tcp"
+    protocol = "tcp"
-#     cidr_blocks = ["0.0.0.0/0"]
+    cidr_blocks = var.enable_ingress_http ? ["0.0.0.0/0"] : []
-#     ipv6_cidr_blocks = ["::/0"]
+    ipv6_cidr_blocks = var.enable_ingress_http ? ["::/0"] : []
-#   }
+  }
 
   egress {
     from_port = 0