add terraform 0.12 support for 04 example

04-instance-with-loadbalancer/00-params.tf

@@ -16,8 +16,8 @@ variable "vpc_cidr" {
 #### HTTP PARAMS
 variable "network_http" {
   default = {
-    subnet_name  = "subnet_http"
-    cidr         = "192.168.1.0/24"
+    subnet_name = "subnet_http"
+    cidr        = "192.168.1.0/24"
   }
 }
 
@@ -29,12 +29,13 @@ variable "desired_capacity_http" {
 #### DB PARAMS
 variable "network_db" {
   default = {
-    subnet_name  = "subnet_db"
-    cidr         = "192.168.2.0/24"
+    subnet_name = "subnet_db"
+    cidr        = "192.168.2.0/24"
   }
 }
 
 # Set number of instance
 variable "desired_capacity_db" {
   default = 3
 }
+

04-instance-with-loadbalancer/010-ssh-key.tf

@@ -5,3 +5,4 @@ resource "aws_key_pair" "user_key" {
   key_name   = "user-key"
   public_key = "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQD3F6tyPEFEzV0LX3X8BsXdMsQz1x2cEikKDEY0aIj41qgxMCP/iteneqXSIFZBp5vizPvaoIR3Um9xK7PGoW8giupGn+EPuxIA4cDM4vzOqOkiMPhz5XK0whEjkVzTo4+S0puvDZuwIsdiW9mxhJc7tgBNL0cYlWSYVkz4G/fslNfRPW5mYAM49f4fhtxPb5ok4Q2Lg9dPKVHO/Bgeu5woMc7RY0p1ej6D4CKFE6lymSDJpW0YHX/wqE9+cfEauh7xZcG0q9t2ta6F6fmX0agvpFyZo8aFbXeUBr7osSCJNgvavWbM/06niWrOvYX2xwWdhXmXSrbX8ZbabVohBK41 [email protected]"
 }
+

04-instance-with-loadbalancer/020-network.tf

@@ -2,37 +2,38 @@
 
 # VPC creation
 resource "aws_vpc" "terraform" {
-  cidr_block           = "${var.vpc_cidr}"
+  cidr_block           = var.vpc_cidr
   enable_dns_hostnames = true
-  tags                 = {
-    Name               = "vpc-terraform"
+  tags = {
+    Name = "vpc-terraform"
   }
 }
 
 # http subnet configuration
 resource "aws_subnet" "http" {
-  vpc_id     = "${aws_vpc.terraform.id}"
-  cidr_block = "${var.network_http["cidr"]}"
-  tags       = {
-    Name     = "subnet-http"
+  vpc_id     = aws_vpc.terraform.id
+  cidr_block = var.network_http["cidr"]
+  tags = {
+    Name = "subnet-http"
   }
-  depends_on = ["aws_internet_gateway.gw"]
+  depends_on = [aws_internet_gateway.gw]
 }
 
 # db subnet configuration
 resource "aws_subnet" "db" {
-  vpc_id     = "${aws_vpc.terraform.id}"
-  cidr_block = "${var.network_db["cidr"]}"
-  tags       = {
-    Name     = "subnet-db"
+  vpc_id     = aws_vpc.terraform.id
+  cidr_block = var.network_db["cidr"]
+  tags = {
+    Name = "subnet-db"
   }
-  depends_on = ["aws_internet_gateway.gw"]
+  depends_on = [aws_internet_gateway.gw]
 }
 
 # External gateway configuration
 resource "aws_internet_gateway" "gw" {
-  vpc_id = "${aws_vpc.terraform.id}"
-  tags   = {
+  vpc_id = aws_vpc.terraform.id
+  tags = {
     Name = "internet-gateway"
   }
 }
+

04-instance-with-loadbalancer/030-security-group.tf

@@ -4,9 +4,9 @@
 resource "aws_security_group" "administration" {
   name        = "administration"
   description = "Allow default administration service"
-  vpc_id      = "${aws_vpc.terraform.id}"
-  tags        = {
-    Name      = "administration"
+  vpc_id      = aws_vpc.terraform.id
+  tags = {
+    Name = "administration"
   }
 
   # Open ssh port
@@ -38,9 +38,9 @@ resource "aws_security_group" "administration" {
 resource "aws_security_group" "web" {
   name        = "web"
   description = "Allow web incgress trafic"
-  vpc_id      = "${aws_vpc.terraform.id}"
-  tags        = {
-    Name      = "web"
+  vpc_id      = aws_vpc.terraform.id
+  tags = {
+    Name = "web"
   }
 
   # http port
@@ -72,9 +72,9 @@ resource "aws_security_group" "web" {
 resource "aws_security_group" "db" {
   name        = "db"
   description = "Allow db incgress trafic"
-  vpc_id      = "${aws_vpc.terraform.id}"
-  tags        = {
-    Name      = "db"
+  vpc_id      = aws_vpc.terraform.id
+  tags = {
+    Name = "db"
   }
 
   # db port
@@ -93,3 +93,4 @@ resource "aws_security_group" "db" {
     cidr_blocks = ["0.0.0.0/0"]
   }
 }
+

04-instance-with-loadbalancer/060-instance-http.tf

@@ -2,26 +2,29 @@
 
 # Create instance
 resource "aws_instance" "http" {
-  count                  = "${var.desired_capacity_http}"
-  ami                    = "${var.ami}"
-  instance_type          = "t2.micro"
-  key_name               = "${aws_key_pair.user_key.key_name}"
-  vpc_security_group_ids = ["${aws_security_group.administration.id}",
-                            "${aws_security_group.web.id}"]
-  subnet_id              = "${aws_subnet.http.id}"
-  user_data              = "${file("scripts/first-boot-http.sh")}"
-  tags                   = {
-    Name                 = "http-instance${count.index}"
+  count         = var.desired_capacity_http
+  ami           = var.ami
+  instance_type = "t2.micro"
+  key_name      = aws_key_pair.user_key.key_name
+  vpc_security_group_ids = [
+    aws_security_group.administration.id,
+    aws_security_group.web.id,
+  ]
+  subnet_id = aws_subnet.http.id
+  user_data = file("scripts/first-boot-http.sh")
+  tags = {
+    Name = "http-instance${count.index}"
   }
 }
 
 # Attach floating ip on instance http
 resource "aws_eip" "public_http" {
-  count      = "${var.desired_capacity_http}"
+  count      = var.desired_capacity_http
   vpc        = true
-  instance   = "${element(aws_instance.http.*.id, count.index)}"
-  depends_on = ["aws_internet_gateway.gw"]
-  tags       = {
-    Name     = "public-http${count.index}"
+  instance   = element(aws_instance.http.*.id, count.index)
+  depends_on = [aws_internet_gateway.gw]
+  tags = {
+    Name = "public-http${count.index}"
   }
 }
+

04-instance-with-loadbalancer/061-instance-db.tf

@@ -2,15 +2,18 @@
 
 # Create instance
 resource "aws_instance" "db" {
-  count                  = "${var.desired_capacity_db}"
-  ami                    = "${var.ami}"
-  instance_type          = "t2.micro"
-  key_name               = "${aws_key_pair.user_key.key_name}"
-  vpc_security_group_ids = ["${aws_security_group.administration.id}",
-                            "${aws_security_group.db.id}"]
-  subnet_id              = "${aws_subnet.db.id}"
-  user_data              = "${file("scripts/first-boot-db.sh")}"
-  tags                   = {
-    Name                 = "db-instance${count.index}"
+  count         = var.desired_capacity_db
+  ami           = var.ami
+  instance_type = "t2.micro"
+  key_name      = aws_key_pair.user_key.key_name
+  vpc_security_group_ids = [
+    aws_security_group.administration.id,
+    aws_security_group.db.id,
+  ]
+  subnet_id = aws_subnet.db.id
+  user_data = file("scripts/first-boot-db.sh")
+  tags = {
+    Name = "db-instance${count.index}"
   }
 }
+

04-instance-with-loadbalancer/070-loadbalancer.tf

@@ -5,20 +5,20 @@
 # Create network load balancer
 resource "aws_lb" "http" {
   name               = "http-lb"
-  subnets            = ["${aws_subnet.http.*.id}"]
+  subnets            = aws_subnet.http.*.id
   load_balancer_type = "network"
-  tags {
-    Name             = "http-lb"
+  tags = {
+    Name = "http-lb"
   }
 }
 
 # Create listener for load balancer http
 resource "aws_lb_listener" "http" {
-  load_balancer_arn  = "${aws_lb.http.id}"
-  port               = "80"
-  protocol           = "TCP"
+  load_balancer_arn = aws_lb.http.id
+  port              = "80"
+  protocol          = "TCP"
   default_action {
-    target_group_arn = "${aws_lb_target_group.http.id}"
+    target_group_arn = aws_lb_target_group.http.id
     type             = "forward"
   }
 }
@@ -28,17 +28,17 @@ resource "aws_lb_target_group" "http" {
   name     = "http-lb-target-group"
   port     = 80
   protocol = "TCP"
-  vpc_id   = "${aws_vpc.terraform.id}"
-  tags {
-    Name   = "http-lb-target-group"
+  vpc_id   = aws_vpc.terraform.id
+  tags = {
+    Name = "http-lb-target-group"
   }
 }
 
 # Add instance to load balancer
 resource "aws_lb_target_group_attachment" "http" {
-  count            = "${var.desired_capacity_http}"
-  target_group_arn = "${aws_lb_target_group.http.arn}"
-  target_id        = "${element(aws_instance.http.*.id, count.index)}"
+  count            = var.desired_capacity_http
+  target_group_arn = aws_lb_target_group.http.arn
+  target_id        = element(aws_instance.http.*.id, count.index)
   port             = 80
 }
 
@@ -47,21 +47,21 @@ resource "aws_lb_target_group_attachment" "http" {
 # Create a new load balancer for db instance
 resource "aws_lb" "db" {
   name               = "db-lb"
-  subnets            = ["${aws_subnet.db.*.id}"]
+  subnets            = aws_subnet.db.*.id
   load_balancer_type = "network"
   internal           = "true"
-  tags {
-    Name             = "db-lb"
+  tags = {
+    Name = "db-lb"
   }
 }
 
 # Create listener for load balancer http
 resource "aws_lb_listener" "db" {
-  load_balancer_arn  = "${aws_lb.db.id}"
-  port               = "3306"
-  protocol           = "TCP"
+  load_balancer_arn = aws_lb.db.id
+  port              = "3306"
+  protocol          = "TCP"
   default_action {
-    target_group_arn = "${aws_lb_target_group.db.id}"
+    target_group_arn = aws_lb_target_group.db.id
     type             = "forward"
   }
 }
@@ -71,16 +71,17 @@ resource "aws_lb_target_group" "db" {
   name     = "db-lb-target-group"
   port     = 3306
   protocol = "TCP"
-  vpc_id   = "${aws_vpc.terraform.id}"
-  tags {
-    Name   = "db-lb-target-group"
+  vpc_id   = aws_vpc.terraform.id
+  tags = {
+    Name = "db-lb-target-group"
   }
 }
 
 # Add instance to load balancer
 resource "aws_lb_target_group_attachment" "db" {
-  count            = "${var.desired_capacity_db}"
-  target_group_arn = "${aws_lb_target_group.db.arn}"
-  target_id        = "${element(aws_instance.db.*.id, count.index)}"
+  count            = var.desired_capacity_db
+  target_group_arn = aws_lb_target_group.db.arn
+  target_id        = element(aws_instance.db.*.id, count.index)
   port             = 80
 }
+

04-instance-with-loadbalancer/071-routing-table.tf

@@ -2,21 +2,22 @@
 
 # Routing table configuration
 resource "aws_route_table" "public" {
-  vpc_id       = "${aws_vpc.terraform.id}"
+  vpc_id = aws_vpc.terraform.id
   route {
     cidr_block = "0.0.0.0/0"
-    gateway_id = "${aws_internet_gateway.gw.id}"
+    gateway_id = aws_internet_gateway.gw.id
   }
 }
 
 # Associate http route
 resource "aws_route_table_association" "http" {
-  subnet_id      = "${aws_subnet.http.id}"
-  route_table_id = "${aws_route_table.public.id}"
+  subnet_id      = aws_subnet.http.id
+  route_table_id = aws_route_table.public.id
 }
 
 # Associate db route
 resource "aws_route_table_association" "db" {
-  subnet_id      = "${aws_subnet.db.id}"
-  route_table_id = "${aws_route_table.public.id}"
+  subnet_id      = aws_subnet.db.id
+  route_table_id = aws_route_table.public.id
 }
+

04-instance-with-loadbalancer/100-outputs.tf

@@ -1,17 +1,18 @@
 # Display dns information
 
 output "http_ip" {
-  value = "${aws_eip.public_http.*.public_ip}"
+  value = aws_eip.public_http.*.public_ip
 }
 
 output "db_hostname" {
-  value = "${aws_instance.db.*.private_dns}"
+  value = aws_instance.db.*.private_dns
 }
 
 output "lb_hostname_http" {
-  value = "${aws_lb.http.dns_name}"
+  value = aws_lb.http.dns_name
 }
 
 output "lb_hostname_db" {
-  value = "${aws_lb.db.dns_name}"
+  value = aws_lb.db.dns_name
 }
+

04-instance-with-loadbalancer/versions.tf

@@ -0,0 +1,4 @@
+
+terraform {
+  required_version = ">= 0.12"
+}