Example single-node-asg-tester: Add Makefile/README

Author: Magicloud

examples/single-node-asg-tester/Makefile

@@ -0,0 +1,40 @@
+.PHONY: init ssh-key apply destroy clean
+
+.DEFAULT_GOAL = help
+
+## Runs terraform get and terraform init for env
+init:
+	@terraform get
+	@terraform init
+
+## Create ssh key
+ssh-key:
+	@ssh-keygen -q -N "" -C "SSH key for vpc-scenario-1 example" -f ./id_rsa
+
+## use 'terraform apply' to apply the setup.
+apply:
+	@terraform apply
+
+## use 'terraform destroy' to remove all resources from AWS
+destroy:
+	@terraform destroy
+
+## rm -rf all files and state
+clean:
+	@rm -f id_rsa
+	@rm -f id_rsa.pub
+	@rm -f terraform.*.backup
+	@rm -f terraform.tfstate
+
+## Show help screen.
+help:
+	@echo "Please use \`make <target>' where <target> is one of\n\n"
+	@awk '/^[a-zA-Z\-\_0-9]+:/ { \
+		helpMessage = match(lastLine, /^## (.*)/); \
+		if (helpMessage) { \
+			helpCommand = substr($$1, 0, index($$1, ":")-1); \
+			helpMessage = substr(lastLine, RSTART + 3, RLENGTH); \
+			printf "%-30s %s\n", helpCommand, helpMessage; \
+		} \
+	} \
+	{ lastLine = $$0 }' $(MAKEFILE_LIST)

examples/single-node-asg-tester/README.md

@@ -0,0 +1,5 @@
+# single node asg tester
+
+This example shows the basic usage of `single-node-asg` module, especially the multiple EBS attachments.
+
+The module keeps one and only one instance up at all time. And the EBS volumes are reattached when a new instance is up. Hence they are always accessible.

examples/single-node-asg-tester/main.tf

@@ -1,28 +1,32 @@
-provider "aws" {
-  region = "ap-northeast-1"
-}
-
 locals {
   cidr                 = "192.168.0.0/16"
   private_subnet_cidrs = ["192.168.100.0/24", "192.168.101.0/24"]
   public_subnet_cidrs  = ["192.168.0.0/24", "192.168.1.0/24"]
+  region = "ap-northeast-1"
 }
 
-data "aws_vpc" "vpc" {
-  cidr_block = local.cidr
-}
+data "aws_availability_zones" "azs" { }
 
-data "aws_subnet" "public" {
-  count = length(local.public_subnet_cidrs)
-  cidr_block = local.public_subnet_cidrs[count.index]
+module "vpc" {
+  source               = "fpco/foundation/aws//modules/vpc-scenario-2"
+  cidr                 = local.cidr
+  public_subnet_cidrs  = local.public_subnet_cidrs
+  private_subnet_cidrs = local.private_subnet_cidrs
+  azs                  = data.aws_availability_zones.azs.names
+  name_prefix          = "test"
+  region               = local.region
 }
 
 module "ubuntu" {
   source = "fpco/foundation/aws//modules/ami-ubuntu"
 }
 
+resource "aws_key_pair" "main" {
+  public_key = file("./id_rsa.pub")
+}
+
 resource "aws_security_group" "ssh" {
-  vpc_id = data.aws_vpc.vpc.id
+  vpc_id = module.vpc.vpc_id
   ingress {
     from_port   = 22
     to_port     = 22
@@ -41,11 +45,11 @@ module "tester" {
   source             = "../../modules/single-node-asg"
   name_prefix        = "ebs"
   name_suffix        = "test"
-  key_name           = "tokyo"
+  key_name           = aws_key_pair.main.key_name
   ami                = module.ubuntu.id
   instance_type      = "t2.micro"
-  subnet_id          = data.aws_subnet.public[0].id
+  subnet_id          = module.vpc.public_subnet_ids[0]
   security_group_ids = [aws_security_group.ssh.id]
-  region             = "ap-northeast-1"
+  region             = local.region
   data_volumes       = [{ name = "a", device = "/dev/xvdm", size = 50 }, { name = "b", device = "/dev/xvdn" }]
 }