terraform packer demo

packer-demo/build-and-launch.sh

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+#!/bin/bash
+AMI_ID=`packer build -machine-readable packer.json | awk -F, '$0 ~/artifact,0,id/ {print $6}'`
+echo 'variable "AMI_ID" { default = "'${AMI_ID}'" }' > amivar.tf
+terraform apply

packer-demo/instance.tf

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+resource "aws_instance" "example" {
+  ami           = "${var.AMI_ID}"
+  instance_type = "t2.micro"
+
+  # the VPC subnet
+  subnet_id = "${aws_subnet.main-public-1.id}"
+
+  # the security group
+  vpc_security_group_ids = ["${aws_security_group.example-instance.id}"]
+
+  # the public SSH key
+  key_name = "${aws_key_pair.mykeypair.key_name}"
+}

packer-demo/key.tf

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+resource "aws_key_pair" "mykeypair" {
+  key_name = "mykeypair"
+  public_key = "${file("${var.PATH_TO_PUBLIC_KEY}")}"
+}

packer-demo/packer-example.json

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+{
+  "variables": {
+    "aws_access_key": "",
+    "aws_secret_key": ""
+  },
+  "builders": [{
+    "type": "amazon-ebs",
+    "access_key": "{{user `aws_access_key`}}",
+    "secret_key": "{{user `aws_secret_key`}}",
+    "region": "eu-west-1",
+    "source_ami": "ami-844e0bf7",
+    "instance_type": "t2.micro",
+    "ssh_username": "ubuntu",
+    "ami_name": "packer-example {{timestamp}}"
+  }],
+  "provisioners": [{
+    "type": "shell",
+    "scripts": [  "scripts/install_software.sh"   ],
+    "execute_command": "{{ .Vars }} sudo -E sh '{{ .Path }}'",
+    "pause_before": "10s"
+  }]
+}

packer-demo/provider.tf

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+provider "aws" { 
+    region = "${var.AWS_REGION}"
+}

packer-demo/securitygroup.tf

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+resource "aws_security_group" "example-instance" {
+  vpc_id = "${aws_vpc.main.id}"
+  name = "allow-ssh"
+  description = "security group that allows ssh and all egress traffic"
+  egress {
+      from_port = 0
+      to_port = 0
+      protocol = "-1"
+      cidr_blocks = ["0.0.0.0/0"]
+  }
+
+  ingress {
+      from_port = 22
+      to_port = 22
+      protocol = "tcp"
+      cidr_blocks = ["0.0.0.0/0"]
+  } 
+tags {
+    Name = "example-instance"
+  }
+}
+

packer-demo/vars.tf

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+variable "AWS_REGION" {
+  default = "eu-west-1"
+}
+variable "PATH_TO_PRIVATE_KEY" {
+  default = "mykey"
+}
+variable "PATH_TO_PUBLIC_KEY" {
+  default = "mykey.pub"
+}

packer-demo/vpc.tf

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+# Internet VPC
+resource "aws_vpc" "main" {
+    cidr_block = "10.0.0.0/16"
+    instance_tenancy = "default"
+    enable_dns_support = "true"
+    enable_dns_hostnames = "true"
+    enable_classiclink = "false"
+    tags {
+        Name = "main"
+    }
+}
+
+
+# Subnets
+resource "aws_subnet" "main-public-1" {
+    vpc_id = "${aws_vpc.main.id}"
+    cidr_block = "10.0.1.0/24"
+    map_public_ip_on_launch = "true"
+    availability_zone = "eu-west-1a"
+
+    tags {
+        Name = "main-public-1"
+    }
+}
+resource "aws_subnet" "main-public-2" {
+    vpc_id = "${aws_vpc.main.id}"
+    cidr_block = "10.0.2.0/24"
+    map_public_ip_on_launch = "true"
+    availability_zone = "eu-west-1b"
+
+    tags {
+        Name = "main-public-2"
+    }
+}
+resource "aws_subnet" "main-public-3" {
+    vpc_id = "${aws_vpc.main.id}"
+    cidr_block = "10.0.3.0/24"
+    map_public_ip_on_launch = "true"
+    availability_zone = "eu-west-1c"
+
+    tags {
+        Name = "main-public-3"
+    }
+}
+resource "aws_subnet" "main-private-1" {
+    vpc_id = "${aws_vpc.main.id}"
+    cidr_block = "10.0.4.0/24"
+    map_public_ip_on_launch = "false"
+    availability_zone = "eu-west-1a"
+
+    tags {
+        Name = "main-private-1"
+    }
+}
+resource "aws_subnet" "main-private-2" {
+    vpc_id = "${aws_vpc.main.id}"
+    cidr_block = "10.0.5.0/24"
+    map_public_ip_on_launch = "false"
+    availability_zone = "eu-west-1b"
+
+    tags {
+        Name = "main-private-2"
+    }
+}
+resource "aws_subnet" "main-private-3" {
+    vpc_id = "${aws_vpc.main.id}"
+    cidr_block = "10.0.6.0/24"
+    map_public_ip_on_launch = "false"
+    availability_zone = "eu-west-1c"
+
+    tags {
+        Name = "main-private-3"
+    }
+}
+
+# Internet GW
+resource "aws_internet_gateway" "main-gw" {
+    vpc_id = "${aws_vpc.main.id}"
+
+    tags {
+        Name = "main"
+    }
+}
+
+# route tables
+resource "aws_route_table" "main-public" {
+    vpc_id = "${aws_vpc.main.id}"
+    route {
+        cidr_block = "0.0.0.0/0"
+        gateway_id = "${aws_internet_gateway.main-gw.id}"
+    }
+
+    tags {
+        Name = "main-public-1"
+    }
+}
+
+# route associations public
+resource "aws_route_table_association" "main-public-1-a" {
+    subnet_id = "${aws_subnet.main-public-1.id}"
+    route_table_id = "${aws_route_table.main-public.id}"
+}
+resource "aws_route_table_association" "main-public-2-a" {
+    subnet_id = "${aws_subnet.main-public-2.id}"
+    route_table_id = "${aws_route_table.main-public.id}"
+}
+resource "aws_route_table_association" "main-public-3-a" {
+    subnet_id = "${aws_subnet.main-public-3.id}"
+    route_table_id = "${aws_route_table.main-public.id}"
+}