The Terraform Book Web service running on ${hostname}
7 |
8 |
9 |
--------------------------------------------------------------------------------
/5/web/files/web_bootstrap.sh:
--------------------------------------------------------------------------------
1 | #!/bin/bash
2 | sudo apt-get update
3 | sudo apt-get install -y nginx
4 | sudo service nginx start
5 |
--------------------------------------------------------------------------------
/5/web/outputs.tf:
--------------------------------------------------------------------------------
1 | output "elb_address" {
2 | value = aws_elb.web.dns_name
3 | }
4 |
5 | output "addresses" {
6 | value = aws_instance.web.*.public_ip
7 | }
8 |
9 | output "public_subnet_id" {
10 | value = module.vpc_basic.public_subnet_id
11 | }
12 |
--------------------------------------------------------------------------------
/5/web/remote_state/main.tf:
--------------------------------------------------------------------------------
1 | provider "aws" {
2 | region = var.region
3 | }
4 |
5 |
6 | module "remote_state" {
7 | source = "github.com/turnbullpress/tf_remote_state.git"
8 | prefix = var.prefix
9 | environment = var.environment
10 | }
11 |
--------------------------------------------------------------------------------
/5/web/remote_state/variables.tf:
--------------------------------------------------------------------------------
1 | variable "region" {
2 | description = "The AWS region"
3 | default = "us-east-1"
4 | }
5 |
6 | variable "prefix" {
7 | description = "The name of our org, i.e. examplecom."
8 | default = "examplecom"
9 | }
10 |
11 | variable "environment" {
12 | description = "The name of the environment."
13 | default = "web"
14 | }
15 |
--------------------------------------------------------------------------------
/5/web/terraform.tfvars:
--------------------------------------------------------------------------------
1 | token = "yourtoken"
2 | region = "us-east-1"
3 | ami = {
4 | us-east-1 = "ami-f652979b"
5 | us-west-1 = "ami-7c4b331c"
6 | }
7 |
8 |
--------------------------------------------------------------------------------
/5/web/variables.tf:
--------------------------------------------------------------------------------
1 | variable "owner_tag" {
2 | default = ["team1", "team2"]
3 | }
4 |
5 | variable "region" {
6 | description = "The AWS region"
7 | }
8 |
9 | variable "ami" {
10 | type = "map"
11 | description = "The AMI to use"
12 | default = {}
13 | }
14 |
15 | variable "instance_type" {
16 | description = "The type of AWS instance to launch"
17 | default = "t2.micro"
18 | }
19 |
20 | variable "key_name" {
21 | description = "The AWS key pair name"
22 | default = "james"
23 | }
24 |
25 | variable "instance_ips" {
26 | description = "The IPs to use for our instances"
27 | default = ["10.0.1.20", "10.0.1.21"]
28 | }
29 |
30 | variable "prefix" {
31 | description = "The name of our org, i.e. examplecom."
32 | default = "examplecom"
33 | }
34 |
35 | variable "environment" {
36 | description = "The name of the environment."
37 | default = "web"
38 | }
39 |
40 | variable "token" {
41 | description = "The Consul server token"
42 | }
43 |
--------------------------------------------------------------------------------
/5/web/web.dot:
--------------------------------------------------------------------------------
1 | digraph {
2 | compound = "true"
3 | newrank = "true"
4 | subgraph "root" {
5 | "[root] aws_elb.web" [label = "aws_elb.web", shape = "box"]
6 | "[root] aws_instance.web" [label = "aws_instance.web", shape = "box"]
7 | "[root] aws_security_group.web_host_sg" [label = "aws_security_group.web_host_sg", shape = "box"]
8 | "[root] aws_security_group.web_inbound_sg" [label = "aws_security_group.web_inbound_sg", shape = "box"]
9 | "[root] module.vpc.aws_internet_gateway.tfb" [label = "aws_internet_gateway.tfb", shape = "box"]
10 | "[root] module.vpc.aws_route.internet_access" [label = "aws_route.internet_access", shape = "box"]
11 | "[root] module.vpc.aws_subnet.public" [label = "aws_subnet.public", shape = "box"]
12 | "[root] module.vpc.aws_vpc.tfb" [label = "aws_vpc.tfb", shape = "box"]
13 | "[root] module.vpc.provider.aws" [label = "provider.aws", shape = "diamond"]
14 | "[root] provider.aws" [label = "provider.aws", shape = "diamond"]
15 | "[root] aws_elb.web" -> "[root] aws_instance.web"
16 | "[root] aws_elb.web" -> "[root] aws_security_group.web_inbound_sg"
17 | "[root] aws_elb.web" -> "[root] module.vpc.aws_subnet.public"
18 | "[root] aws_elb.web" -> "[root] provider.aws"
19 | "[root] aws_instance.web" -> "[root] aws_security_group.web_host_sg"
20 | "[root] aws_instance.web" -> "[root] module.vpc.aws_subnet.public"
21 | "[root] aws_instance.web" -> "[root] provider.aws"
22 | "[root] aws_security_group.web_host_sg" -> "[root] module.vpc.aws_vpc.tfb"
23 | "[root] aws_security_group.web_host_sg" -> "[root] provider.aws"
24 | "[root] aws_security_group.web_inbound_sg" -> "[root] module.vpc.aws_vpc.tfb"
25 | "[root] aws_security_group.web_inbound_sg" -> "[root] provider.aws"
26 | "[root] module.vpc.aws_internet_gateway.tfb" -> "[root] module.vpc.aws_vpc.tfb"
27 | "[root] module.vpc.aws_internet_gateway.tfb" -> "[root] module.vpc.provider.aws"
28 | "[root] module.vpc.aws_route.internet_access" -> "[root] module.vpc.aws_internet_gateway.tfb"
29 | "[root] module.vpc.aws_route.internet_access" -> "[root] module.vpc.aws_vpc.tfb"
30 | "[root] module.vpc.aws_route.internet_access" -> "[root] module.vpc.provider.aws"
31 | "[root] module.vpc.aws_subnet.public" -> "[root] module.vpc.aws_vpc.tfb"
32 | "[root] module.vpc.aws_subnet.public" -> "[root] module.vpc.provider.aws"
33 | "[root] module.vpc.aws_vpc.tfb" -> "[root] module.vpc.provider.aws"
34 | "[root] module.vpc.provider.aws" -> "[root] provider.aws"
35 | }
36 | }
37 |
38 |
--------------------------------------------------------------------------------
/5/web/web.tf:
--------------------------------------------------------------------------------
1 | provider "aws" {
2 | region = var.region
3 | }
4 |
5 | provider "consul" {
6 | address = "${data.terraform_remote_state.consul.consul_server_address.0}:8500"
7 | datacenter = "consul"
8 | }
9 |
10 | terraform {
11 | backend "s3" {
12 | region = "us-east-1"
13 | bucket = "examplecom-remote-state-web"
14 | key = "terraform.tfstate"
15 | }
16 | }
17 |
18 | data "terraform_remote_state" "consul" {
19 | backend = "s3"
20 |
21 | config = {
22 | region = var.region
23 | bucket = "examplecom-remote-state-consul"
24 | key = "terraform.tfstate"
25 | }
26 | }
27 |
28 | module "vpc_basic" {
29 | source = "github.com/turnbullpress/tf_vpc_basic.git?ref=v0.0.1"
30 | name = "web"
31 | cidr = "10.0.0.0/16"
32 | public_subnet = "10.0.1.0/24"
33 | }
34 |
35 | resource "consul_key_prefix" "web" {
36 | token = var.token
37 |
38 | path_prefix = "web/config/"
39 |
40 | subkeys = {
41 | "public_dns" = aws_elb.web.dns_name
42 | }
43 | }
44 |
45 | resource "aws_instance" "web" {
46 | ami = lookup(var.ami, var.region)
47 | instance_type = var.instance_type
48 | key_name = var.key_name
49 | subnet_id = module.vpc_basic.public_subnet_id
50 | private_ip = var.instance_ips[count.index]
51 | user_data = file("files/web_bootstrap.sh")
52 | associate_public_ip_address = true
53 |
54 | vpc_security_group_ids = [
55 | aws_security_group.web_host_sg.id,
56 | ]
57 |
58 | tags = {
59 | Name = "web-${format("%03d", count.index + 1)}"
60 | Owner = var.owner_tag[count.index]
61 | }
62 |
63 | count = length(var.instance_ips)
64 | }
65 |
66 | resource "aws_elb" "web" {
67 | name = "web-elb"
68 |
69 | subnets = [module.vpc_basic.public_subnet_id]
70 | security_groups = [aws_security_group.web_inbound_sg.id]
71 |
72 | listener {
73 | instance_port = 80
74 | instance_protocol = "http"
75 | lb_port = 80
76 | lb_protocol = "http"
77 | }
78 |
79 | # The instances are registered automatically
80 | instances = [aws_instance.web.*.id]
81 | }
82 |
83 | resource "aws_security_group" "web_inbound_sg" {
84 | name = "web_inbound"
85 | description = "Allow HTTP from Anywhere"
86 | vpc_id = module.vpc_basic.vpc_id
87 |
88 | ingress {
89 | from_port = 80
90 | to_port = 80
91 | protocol = "tcp"
92 | cidr_blocks = ["0.0.0.0/0"]
93 | }
94 |
95 | ingress {
96 | from_port = 8
97 | to_port = 0
98 | protocol = "icmp"
99 | cidr_blocks = ["0.0.0.0/0"]
100 | }
101 |
102 | egress {
103 | from_port = 0
104 | to_port = 0
105 | protocol = "-1"
106 | cidr_blocks = ["0.0.0.0/0"]
107 | }
108 | }
109 |
110 | resource "aws_security_group" "web_host_sg" {
111 | name = "web_host"
112 | description = "Allow SSH & HTTP to web hosts"
113 | vpc_id = module.vpc_basic.vpc_id
114 |
115 | ingress {
116 | from_port = 22
117 | to_port = 22
118 | protocol = "tcp"
119 | cidr_blocks = ["0.0.0.0/0"]
120 | }
121 |
122 | # HTTP access from the VPC
123 | ingress {
124 | from_port = 80
125 | to_port = 80
126 | protocol = "tcp"
127 | cidr_blocks = [module.vpc_basic.cidr]
128 | }
129 |
130 | egress {
131 | from_port = 0
132 | to_port = 0
133 | protocol = "-1"
134 | cidr_blocks = ["0.0.0.0/0"]
135 | }
136 |
137 | ingress {
138 | from_port = 8
139 | to_port = 0
140 | protocol = "icmp"
141 | cidr_blocks = ["0.0.0.0/0"]
142 | }
143 | }
144 |
--------------------------------------------------------------------------------
/6/README.md:
--------------------------------------------------------------------------------
1 | You can find the full code for Chapter 6 in:
2 |
3 | https://github.com/turnbullpress/tf_dc
4 |
5 |
--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # The Terraform Book code repository
2 |
3 | The source code to accompany [The Terraform Book](http://terraformbook.com).
4 |
5 | Each directory contains one or more chapter's code.
6 |
--------------------------------------------------------------------------------