Add example for internal load balancing
This commit is contained in:
Dana Hoffman
parent
a0cbb9fd42
commit
f8ec19049b
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@ -0,0 +1,3 @@
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terraform.tfstate
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terraform.tfstate.backup
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terraform.tfvars
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@ -0,0 +1,274 @@
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provider "google" {
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region = "${var.region}"
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project = "${var.project_name}"
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credentials = "${file("${var.credentials_file_path}")}"
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}
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resource "google_compute_network" "my-custom-network" {
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name = "my-custom-network"
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}
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resource "google_compute_subnetwork" "my-custom-subnet" {
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name = "my-custom-subnet"
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ip_cidr_range = "10.128.0.0/20"
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network = "${google_compute_network.my-custom-network.self_link}"
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region = "${var.region}"
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}
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resource "google_compute_firewall" "allow-all-internal" {
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name = "allow-all-10-128-0-0-20"
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network = "${google_compute_network.my-custom-network.name}"
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allow {
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protocol = "tcp"
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}
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allow {
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protocol = "udp"
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}
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allow {
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protocol = "icmp"
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}
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source_ranges = ["10.128.0.0/20"]
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}
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resource "google_compute_firewall" "allow-ssh-rdp-icmp" {
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name = "allow-tcp22-tcp3389-icmp"
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network = "${google_compute_network.my-custom-network.name}"
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allow {
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protocol = "tcp"
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ports = ["22", "3389",]
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}
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allow {
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protocol = "icmp"
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}
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}
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resource "google_compute_instance" "ilb-instance-1" {
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name = "ilb-instance-1"
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machine_type = "n1-standard-1"
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zone = "${var.region_zone}"
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tags = ["int-lb"]
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disk {
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image = "debian-cloud/debian-8"
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}
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network_interface {
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subnetwork = "${google_compute_subnetwork.my-custom-subnet.name}"
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access_config {
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// Ephemeral IP
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}
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}
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metadata_startup_script = <<EOF
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#! /bin/bash
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apt-get update
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apt-get install apache2 -y
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a2ensite default-ssl
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a2enmod ssl
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service apache2 restart
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echo '<!doctype html><html><body><h1>ilb-instance-1</h1></body></html>' | tee /var/www/html/index.html
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EOF
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}
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resource "google_compute_instance" "ilb-instance-2" {
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name = "ilb-instance-2"
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machine_type = "n1-standard-1"
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zone = "${var.region_zone}"
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tags = ["int-lb"]
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disk {
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image = "debian-cloud/debian-8"
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}
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network_interface {
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subnetwork = "${google_compute_subnetwork.my-custom-subnet.name}"
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access_config {
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// Ephemeral IP
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}
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}
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metadata_startup_script = <<EOF
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#! /bin/bash
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apt-get update
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apt-get install apache2 -y
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a2ensite default-ssl
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a2enmod ssl
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service apache2 restart
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echo '<!doctype html><html><body><h1>ilb-instance-2</h1></body></html>' | tee /var/www/html/index.html
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EOF
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}
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resource "google_compute_instance" "ilb-instance-3" {
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name = "ilb-instance-3"
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machine_type = "n1-standard-1"
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zone = "${var.region_zone_2}"
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tags = ["int-lb"]
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disk {
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image = "debian-cloud/debian-8"
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}
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network_interface {
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subnetwork = "${google_compute_subnetwork.my-custom-subnet.name}"
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access_config {
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// Ephemeral IP
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}
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}
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metadata_startup_script = <<EOF
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#! /bin/bash
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apt-get update
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apt-get install apache2 -y
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a2ensite default-ssl
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a2enmod ssl
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service apache2 restart
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echo '<!doctype html><html><body><h1>ilb-instance-3</h1></body></html>' | tee /var/www/html/index.html
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EOF
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}
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resource "google_compute_instance" "ilb-instance-4" {
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name = "ilb-instance-4"
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machine_type = "n1-standard-1"
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zone = "${var.region_zone_2}"
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tags = ["int-lb"]
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disk {
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image = "debian-cloud/debian-8"
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}
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network_interface {
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subnetwork = "${google_compute_subnetwork.my-custom-subnet.name}"
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access_config {
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// Ephemeral IP
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}
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}
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metadata_startup_script = <<EOF
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#! /bin/bash
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apt-get update
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apt-get install apache2 -y
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a2ensite default-ssl
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a2enmod ssl
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service apache2 restart
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echo '<!doctype html><html><body><h1>ilb-instance-4</h1></body></html>' | tee /var/www/html/index.html
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EOF
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}
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resource "google_compute_instance_group" "us-ig1" {
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name = "us-ig1"
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instances = [
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"${google_compute_instance.ilb-instance-1.self_link}",
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"${google_compute_instance.ilb-instance-2.self_link}"
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]
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zone = "${var.region_zone}"
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}
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resource "google_compute_instance_group" "us-ig2" {
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name = "us-ig2"
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instances = [
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"${google_compute_instance.ilb-instance-3.self_link}",
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"${google_compute_instance.ilb-instance-4.self_link}"
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]
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zone = "${var.region_zone_2}"
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}
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resource "google_compute_health_check" "my-tcp-health-check" {
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name = "my-tcp-health-check"
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tcp_health_check {
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port = "80"
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}
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}
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resource "google_compute_region_backend_service" "my-int-lb" {
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name = "my-int-lb"
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health_checks = ["${google_compute_health_check.my-tcp-health-check.self_link}"]
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region = "${var.region}"
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backend {
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group = "${google_compute_instance_group.us-ig1.self_link}"
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}
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backend {
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group = "${google_compute_instance_group.us-ig2.self_link}"
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}
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}
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resource "google_compute_forwarding_rule" "my-int-lb-forwarding-rule" {
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name = "my-int-lb-forwarding-rule"
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load_balancing_scheme = "INTERNAL"
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ports = ["80"]
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network = "${google_compute_network.my-custom-network.self_link}"
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subnetwork = "${google_compute_subnetwork.my-custom-subnet.self_link}"
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backend_service = "${google_compute_region_backend_service.my-int-lb.self_link}"
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}
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resource "google_compute_firewall" "allow-internal-lb" {
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name = "allow-internal-lb"
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network = "${google_compute_network.my-custom-network.name}"
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allow {
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protocol = "tcp"
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ports = ["80", "443"]
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}
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source_ranges = ["10.128.0.0/20"]
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target_tags = ["int-lb"]
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}
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resource "google_compute_firewall" "allow-health-check" {
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name = "allow-health-check"
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network = "${google_compute_network.my-custom-network.name}"
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allow {
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protocol = "tcp"
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}
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source_ranges = ["130.211.0.0/22","35.191.0.0/16"]
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target_tags = ["int-lb"]
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}
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resource "google_compute_instance" "standalone-instance-1" {
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name = "standalone-instance-1"
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machine_type = "n1-standard-1"
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zone = "${var.region_zone}"
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tags = ["standalone"]
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disk {
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image = "debian-cloud/debian-8"
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}
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network_interface {
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subnetwork = "${google_compute_subnetwork.my-custom-subnet.name}"
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access_config {
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// Ephemeral IP
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}
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}
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}
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resource "google_compute_firewall" "allow-ssh-to-standalone" {
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name = "allow-ssh-to-standalone"
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network = "${google_compute_network.my-custom-network.name}"
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allow {
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protocol = "tcp"
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ports = ["22"]
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}
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target_tags = ["standalone"]
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}
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@ -0,0 +1,20 @@
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variable "region" {
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default = "us-central1"
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}
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variable "region_zone" {
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default = "us-central1-b"
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}
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variable "region_zone_2" {
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default = "us-central1-c"
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}
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variable "project_name" {
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description = "The ID of the Google Cloud project"
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}
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variable "credentials_file_path" {
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description = "Path to the JSON file used to describe your account credentials"
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default = "~/.gcloud/Terraform.json"
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}
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