add multi region sample

Author: mosuke5

multi_region_sample/README.md

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+# Multi Region Sample
+これはTerraformを使って複数のリージョンのリソースを操作したい場合のサンプルです。
+module機能を使って、中国・日本・USの3リージョンに対して同一のリソースの操作を行います。

multi_region_sample/global/main.tf

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+variable "region" {}
+variable "zone" {}
+variable "vpc_cidr" {}
+variable "vsw_cidr" {}
+variable "project_name" {} 
+variable "publickey" {} 
+variable "instance_password" {} 
+
+resource "alicloud_vpc" "vpc" {
+  name = "${var.project_name}-vpc"
+  cidr_block = "${var.vpc_cidr}"
+}
+
+resource "alicloud_vswitch" "vsw" {
+  vpc_id            = "${alicloud_vpc.vpc.id}"
+  cidr_block        = "${var.vsw_cidr}"
+  availability_zone = "${var.zone}"
+}
+
+resource "alicloud_security_group" "sg" {
+  name   = "${var.project_name}-sg"
+  vpc_id = "${alicloud_vpc.vpc.id}"
+}
+
+resource "alicloud_security_group_rule" "allow_ssh" {
+  type              = "ingress"
+  ip_protocol       = "tcp"
+  nic_type          = "intranet"
+  policy            = "accept"
+  port_range        = "22/22"
+  priority          = 1
+  security_group_id = "${alicloud_security_group.sg.id}"
+  cidr_ip           = "0.0.0.0/0"
+}
+
+resource "alicloud_security_group_rule" "allow_icmp" {
+  type              = "ingress"
+  ip_protocol       = "icmp"
+  nic_type          = "intranet"
+  policy            = "accept"
+  port_range        = "-1/-1"
+  priority          = 1
+  security_group_id = "${alicloud_security_group.sg.id}"
+  cidr_ip           = "0.0.0.0/0"
+}
+
+resource "alicloud_security_group_rule" "allow_all_from_internal" {
+  type              = "ingress"
+  ip_protocol       = "all"
+  nic_type          = "intranet"
+  policy            = "accept"
+  port_range        = "-1/-1"
+  priority          = 1
+  security_group_id = "${alicloud_security_group.sg.id}"
+  cidr_ip           = "192.168.0.0/16"
+}
+
+resource "alicloud_instance" "instance" {
+  instance_name = "${var.project_name}-ecs"
+  availability_zone = "${var.zone}"
+  image_id = "centos_7_3_64_40G_base_20170322.vhd"
+  instance_type = "ecs.mn4.large"
+  system_disk_category = "cloud_efficiency"
+  security_groups = ["${alicloud_security_group.sg.id}"]
+  vswitch_id = "${alicloud_vswitch.vsw.id}"
+  password = "${var.instance_password}"
+  host_name = "${var.project_name}-${var.region}"
+  internet_max_bandwidth_out = 100
+}

multi_region_sample/terraform.tf

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+variable "access_key" {}
+variable "secret_key" {}
+variable "region_jp" {}
+variable "zone_jp" {}
+variable "region_cn" {}
+variable "zone_cn" {}
+variable "region_us" {}
+variable "zone_us" {}
+variable "project_name" {}
+variable "publickey" {}
+
+provider "alicloud" {
+  access_key = "${var.access_key}"
+  secret_key = "${var.secret_key}"
+  region = "${var.region_jp}"
+  alias = "tokyo"
+}
+
+provider "alicloud" {
+  access_key = "${var.access_key}"
+  secret_key = "${var.secret_key}"
+  region = "${var.region_cn}"
+  alias = "shanghai"
+}
+
+provider "alicloud" {
+  access_key = "${var.access_key}"
+  secret_key = "${var.secret_key}"
+  region = "${var.region_us}"
+  alias = "silicon_valley"
+}
+
+module "tokyo" {
+  source = "./global"
+  region = "${var.region_jp}"
+  zone = "${var.zone_jp}"
+  project_name = "${var.project_name}"
+  publickey = "${var.publickey}"
+  vpc_cidr = "192.168.1.0/24"
+  vsw_cidr = "192.168.1.0/28"
+  providers = {
+    alicloud = "alicloud.tokyo"
+  }
+}
+
+module "shanghai" {
+  source = "./global"
+  region = "${var.region_cn}"
+  zone = "${var.zone_cn}"
+  project_name = "${var.project_name}"
+  publickey = "${var.publickey}"
+  vpc_cidr = "192.168.2.0/24"
+  vsw_cidr = "192.168.2.0/28"
+  providers = {
+    alicloud = "alicloud.shanghai"
+  }
+}
+
+module "silicon_valley" {
+  source = "./global"
+  region = "${var.region_us}"
+  zone = "${var.zone_us}"
+  project_name = "${var.project_name}"
+  publickey = "${var.publickey}"
+  vpc_cidr = "192.168.3.0/24"
+  vsw_cidr = "192.168.3.0/28"
+  providers = {
+    alicloud = "alicloud.silicon_valley"
+  }
+}

multi_region_sample/terraform.tfvars.sample

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+access_key = "xxxxxxxxxxxxxxxxxx"
+secret_key = "xxxxxxxxxxxxxxxxxx"
+region_jp = "ap-northeast-1"
+zone_jp = "ap-northeast-1a"
+region_cn = "cn-shanghai"
+zone_cn = "cn-shanghai-a"
+region_us = "us-west-1"
+zone_us = "us-west-1a"
+project_name = "multi-region-sample"
+publickey = "xxxxxxk"