Puedes usar el siguiente ejemplo para implementar un balanceador de cargas de aplicaciones interno regional de muestra.
Si es la primera vez que usas Terraform para Google Cloud, consulta Comienza a usar Terraform.
Balanceador de cargas de aplicaciones interno regional con un backend de MIG
Puedes usar los recursos de Terraform para abrir un balanceador de cargas de HTTP interno con un backend de grupo de instancias administrado.
Para obtener información sobre la configuración del balanceador de cargas, consulta la guía de configuración principal.
# VPC network
resource "google_compute_network" "ilb_network" {
name = "l7-ilb-network"
provider = google-beta
auto_create_subnetworks = false
}
# proxy-only subnet
resource "google_compute_subnetwork" "proxy_subnet" {
name = "l7-ilb-proxy-subnet"
provider = google-beta
ip_cidr_range = "10.0.0.0/24"
region = "europe-west1"
purpose = "REGIONAL_MANAGED_PROXY"
role = "ACTIVE"
network = google_compute_network.ilb_network.id
}
# backend subnet
resource "google_compute_subnetwork" "ilb_subnet" {
name = "l7-ilb-subnet"
provider = google-beta
ip_cidr_range = "10.0.1.0/24"
region = "europe-west1"
network = google_compute_network.ilb_network.id
}
# forwarding rule
resource "google_compute_forwarding_rule" "google_compute_forwarding_rule" {
name = "l7-ilb-forwarding-rule"
provider = google-beta
region = "europe-west1"
depends_on = [google_compute_subnetwork.proxy_subnet]
ip_protocol = "TCP"
load_balancing_scheme = "INTERNAL_MANAGED"
port_range = "80"
target = google_compute_region_target_http_proxy.default.id
network = google_compute_network.ilb_network.id
subnetwork = google_compute_subnetwork.ilb_subnet.id
network_tier = "PREMIUM"
}
# HTTP target proxy
resource "google_compute_region_target_http_proxy" "default" {
name = "l7-ilb-target-http-proxy"
provider = google-beta
region = "europe-west1"
url_map = google_compute_region_url_map.default.id
}
# URL map
resource "google_compute_region_url_map" "default" {
name = "l7-ilb-regional-url-map"
provider = google-beta
region = "europe-west1"
default_service = google_compute_region_backend_service.default.id
}
# backend service
resource "google_compute_region_backend_service" "default" {
name = "l7-ilb-backend-subnet"
provider = google-beta
region = "europe-west1"
protocol = "HTTP"
load_balancing_scheme = "INTERNAL_MANAGED"
timeout_sec = 10
health_checks = [google_compute_region_health_check.default.id]
backend {
group = google_compute_region_instance_group_manager.mig.instance_group
balancing_mode = "UTILIZATION"
capacity_scaler = 1.0
}
}
# instance template
resource "google_compute_instance_template" "instance_template" {
name = "l7-ilb-mig-template"
provider = google-beta
machine_type = "e2-small"
tags = ["http-server"]
network_interface {
network = google_compute_network.ilb_network.id
subnetwork = google_compute_subnetwork.ilb_subnet.id
access_config {
# add external ip to fetch packages
}
}
disk {
source_image = "debian-cloud/debian-10"
auto_delete = true
boot = true
}
# install nginx and serve a simple web page
metadata = {
startup-script = <<-EOF1
#! /bin/bash
set -euo pipefail
export DEBIAN_FRONTEND=noninteractive
apt-get update
apt-get install -y nginx-light jq
NAME=$(curl -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/hostname")
IP=$(curl -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/network-interfaces/0/ip")
METADATA=$(curl -f -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/attributes/?recursive=True" | jq 'del(.["startup-script"])')
cat <<EOF > /var/www/html/index.html
<pre>
Name: $NAME
IP: $IP
Metadata: $METADATA
</pre>
EOF
EOF1
}
lifecycle {
create_before_destroy = true
}
}
# health check
resource "google_compute_region_health_check" "default" {
name = "l7-ilb-hc"
provider = google-beta
region = "europe-west1"
http_health_check {
port_specification = "USE_SERVING_PORT"
}
}
# MIG
resource "google_compute_region_instance_group_manager" "mig" {
name = "l7-ilb-mig1"
provider = google-beta
region = "europe-west1"
version {
instance_template = google_compute_instance_template.instance_template.id
name = "primary"
}
base_instance_name = "vm"
target_size = 2
}
# allow all access from IAP and health check ranges
resource "google_compute_firewall" "fw_iap" {
name = "l7-ilb-fw-allow-iap-hc"
provider = google-beta
direction = "INGRESS"
network = google_compute_network.ilb_network.id
source_ranges = ["130.211.0.0/22", "35.191.0.0/16", "35.235.240.0/20"]
allow {
protocol = "tcp"
}
}
# allow http from proxy subnet to backends
resource "google_compute_firewall" "fw_ilb_to_backends" {
name = "l7-ilb-fw-allow-ilb-to-backends"
provider = google-beta
direction = "INGRESS"
network = google_compute_network.ilb_network.id
source_ranges = ["10.0.0.0/24"]
target_tags = ["http-server"]
allow {
protocol = "tcp"
ports = ["80", "443", "8080"]
}
}
# test instance
resource "google_compute_instance" "vm_test" {
name = "l7-ilb-test-vm"
provider = google-beta
zone = "europe-west1-b"
machine_type = "e2-small"
network_interface {
network = google_compute_network.ilb_network.id
subnetwork = google_compute_subnetwork.ilb_subnet.id
}
boot_disk {
initialize_params {
image = "debian-cloud/debian-10"
}
}
}Balanceador de cargas de aplicaciones interno regional con un backend de MIG y un redireccionamiento de HTTP a HTTPS
Puedes usar los recursos de Terraform para abrir un balanceador de cargas de HTTPS interno con un backend de MIG y un redireccionamiento de HTTP a HTTPS.
Para obtener información sobre la configuración del balanceador de cargas, consulta la guía de configuración principal.
# VPC network
resource "google_compute_network" "default" {
name = "l7-ilb-network"
auto_create_subnetworks = false
}
# Proxy-only subnet
resource "google_compute_subnetwork" "proxy_subnet" {
name = "l7-ilb-proxy-subnet"
ip_cidr_range = "10.0.0.0/24"
region = "europe-west1"
purpose = "REGIONAL_MANAGED_PROXY"
role = "ACTIVE"
network = google_compute_network.default.id
}
# Backend subnet
resource "google_compute_subnetwork" "default" {
name = "l7-ilb-subnet"
ip_cidr_range = "10.0.1.0/24"
region = "europe-west1"
network = google_compute_network.default.id
}
# Reserved internal address
resource "google_compute_address" "default" {
name = "l7-ilb-ip"
provider = google-beta
subnetwork = google_compute_subnetwork.default.id
address_type = "INTERNAL"
address = "10.0.1.5"
region = "europe-west1"
purpose = "SHARED_LOADBALANCER_VIP"
}
# Regional forwarding rule
resource "google_compute_forwarding_rule" "default" {
name = "l7-ilb-forwarding-rule"
region = "europe-west1"
depends_on = [google_compute_subnetwork.proxy_subnet]
ip_protocol = "TCP"
ip_address = google_compute_address.default.id
load_balancing_scheme = "INTERNAL_MANAGED"
port_range = "443"
target = google_compute_region_target_https_proxy.default.id
network = google_compute_network.default.id
subnetwork = google_compute_subnetwork.default.id
network_tier = "PREMIUM"
}
# Self-signed regional SSL certificate for testing
resource "tls_private_key" "default" {
algorithm = "RSA"
rsa_bits = 2048
}
resource "tls_self_signed_cert" "default" {
private_key_pem = tls_private_key.default.private_key_pem
# Certificate expires after 12 hours.
validity_period_hours = 12
# Generate a new certificate if Terraform is run within three
# hours of the certificate's expiration time.
early_renewal_hours = 3
# Reasonable set of uses for a server SSL certificate.
allowed_uses = [
"key_encipherment",
"digital_signature",
"server_auth",
]
dns_names = ["example.com"]
subject {
common_name = "example.com"
organization = "ACME Examples, Inc"
}
}
resource "google_compute_region_ssl_certificate" "default" {
name_prefix = "my-certificate-"
private_key = tls_private_key.default.private_key_pem
certificate = tls_self_signed_cert.default.cert_pem
region = "europe-west1"
lifecycle {
create_before_destroy = true
}
}
# Regional target HTTPS proxy
resource "google_compute_region_target_https_proxy" "default" {
name = "l7-ilb-target-https-proxy"
region = "europe-west1"
url_map = google_compute_region_url_map.https_lb.id
ssl_certificates = [google_compute_region_ssl_certificate.default.self_link]
}
# Regional URL map
resource "google_compute_region_url_map" "https_lb" {
name = "l7-ilb-regional-url-map"
region = "europe-west1"
default_service = google_compute_region_backend_service.default.id
}
# Regional backend service
resource "google_compute_region_backend_service" "default" {
name = "l7-ilb-backend-service"
region = "europe-west1"
protocol = "HTTP"
port_name = "http-server"
load_balancing_scheme = "INTERNAL_MANAGED"
timeout_sec = 10
health_checks = [google_compute_region_health_check.default.id]
backend {
group = google_compute_region_instance_group_manager.default.instance_group
balancing_mode = "UTILIZATION"
capacity_scaler = 1.0
}
}
# Instance template
resource "google_compute_instance_template" "default" {
name = "l7-ilb-mig-template"
machine_type = "e2-small"
tags = ["http-server"]
network_interface {
network = google_compute_network.default.id
subnetwork = google_compute_subnetwork.default.id
access_config {
# add external ip to fetch packages
}
}
disk {
source_image = "debian-cloud/debian-10"
auto_delete = true
boot = true
}
# install nginx and serve a simple web page
metadata = {
startup-script = <<-EOF1
#! /bin/bash
set -euo pipefail
export DEBIAN_FRONTEND=noninteractive
apt-get update
apt-get install -y nginx-light jq
NAME=$(curl -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/hostname")
IP=$(curl -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/network-interfaces/0/ip")
METADATA=$(curl -f -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/attributes/?recursive=True" | jq 'del(.["startup-script"])')
cat <<EOF > /var/www/html/index.html
<pre>
Name: $NAME
IP: $IP
Metadata: $METADATA
</pre>
EOF
EOF1
}
lifecycle {
create_before_destroy = true
}
}
# Regional health check
resource "google_compute_region_health_check" "default" {
name = "l7-ilb-hc"
region = "europe-west1"
http_health_check {
port_specification = "USE_SERVING_PORT"
}
}
# Regional MIG
resource "google_compute_region_instance_group_manager" "default" {
name = "l7-ilb-mig1"
region = "europe-west1"
version {
instance_template = google_compute_instance_template.default.id
name = "primary"
}
named_port {
name = "http-server"
port = 80
}
base_instance_name = "vm"
target_size = 2
}
# Allow all access to health check ranges
resource "google_compute_firewall" "default" {
name = "l7-ilb-fw-allow-hc"
direction = "INGRESS"
network = google_compute_network.default.id
source_ranges = ["130.211.0.0/22", "35.191.0.0/16", "35.235.240.0/20"]
allow {
protocol = "tcp"
}
}
# Allow http from proxy subnet to backends
resource "google_compute_firewall" "backends" {
name = "l7-ilb-fw-allow-ilb-to-backends"
direction = "INGRESS"
network = google_compute_network.default.id
source_ranges = ["10.0.0.0/24"]
target_tags = ["http-server"]
allow {
protocol = "tcp"
ports = ["80", "443", "8080"]
}
}
# Test instance
resource "google_compute_instance" "default" {
name = "l7-ilb-test-vm"
zone = "europe-west1-b"
machine_type = "e2-small"
network_interface {
network = google_compute_network.default.id
subnetwork = google_compute_subnetwork.default.id
}
boot_disk {
initialize_params {
image = "debian-cloud/debian-10"
}
}
}
### HTTP-to-HTTPS redirect ###
# Regional forwarding rule
resource "google_compute_forwarding_rule" "redirect" {
name = "l7-ilb-redirect"
region = "europe-west1"
ip_protocol = "TCP"
ip_address = google_compute_address.default.id # Same as HTTPS load balancer
load_balancing_scheme = "INTERNAL_MANAGED"
port_range = "80"
target = google_compute_region_target_http_proxy.default.id
network = google_compute_network.default.id
subnetwork = google_compute_subnetwork.default.id
network_tier = "PREMIUM"
}
# Regional HTTP proxy
resource "google_compute_region_target_http_proxy" "default" {
name = "l7-ilb-target-http-proxy"
region = "europe-west1"
url_map = google_compute_region_url_map.redirect.id
}
# Regional URL map
resource "google_compute_region_url_map" "redirect" {
name = "l7-ilb-redirect-url-map"
region = "europe-west1"
default_service = google_compute_region_backend_service.default.id
host_rule {
hosts = ["*"]
path_matcher = "allpaths"
}
path_matcher {
name = "allpaths"
default_service = google_compute_region_backend_service.default.id
path_rule {
paths = ["/"]
url_redirect {
https_redirect = true
host_redirect = "10.0.1.5:443"
redirect_response_code = "PERMANENT_REDIRECT"
strip_query = true
}
}
}
}Balanceador de cargas de aplicaciones interno regional que usa VPC compartida y un servicio de backend entre proyectos
Puedes usar los recursos de Terraform para abrir un balanceador de cargas de aplicaciones interno regional que use una VPC compartida y un servicio de backend entre proyectos. En el siguiente diagrama de arquitectura, se muestra dónde se crean los componentes del balanceador de cargas.
Antes de comenzar a configurar un balanceador de cargas de aplicaciones interno regional que use una VPC compartida, asegúrate de tener los permisos de IAM en los proyectos host y de servicio necesarios. Para obtener más información detallada sobre la configuración del balanceador de cargas, consulta la guía de configuración principal.
# VPC network
resource "google_compute_network" "default" {
name = "l7-ilb-network"
auto_create_subnetworks = false
project = "my-host-project"
}
# proxy-only subnet
# https://cloud.google.com/load-balancing/docs/proxy-only-subnets#proxy_only_subnet_create
resource "google_compute_subnetwork" "proxy_subnet" {
name = "l7-ilb-proxy-subnet"
ip_cidr_range = "10.0.0.0/24"
region = "us-central1"
purpose = "REGIONAL_MANAGED_PROXY"
role = "ACTIVE"
network = google_compute_network.default.id
project = "my-host-project"
}
# backend subnet
resource "google_compute_subnetwork" "ilb_subnet" {
name = "l7-ilb-subnet"
ip_cidr_range = "10.0.1.0/24"
region = "us-central1"
network = google_compute_network.default.id
project = "my-host-project"
}
# allow all access from IAP and health check ranges
resource "google_compute_firewall" "fw_iap" {
project = "my-host-project"
name = "l7-ilb-fw-allow-iap-hc"
direction = "INGRESS"
network = google_compute_network.default.id
source_ranges = ["130.211.0.0/22", "35.191.0.0/16", "35.235.240.0/20"]
allow {
protocol = "tcp"
}
}
# allow http from proxy subnet to backends
resource "google_compute_firewall" "fw_ilb_to_backends" {
project = "my-host-project"
name = "l7-ilb-fw-allow-ilb-to-backends"
direction = "INGRESS"
network = google_compute_network.default.id
source_ranges = ["0.0.0.0/0"]
target_tags = ["http-server"]
allow {
protocol = "tcp"
ports = ["80", "443", "8080"]
}
}
# forwarding rule
resource "google_compute_forwarding_rule" "default" {
name = "l7-ilb-forwarding-rule"
region = "us-central1"
ip_protocol = "TCP"
load_balancing_scheme = "INTERNAL_MANAGED"
port_range = "80"
target = google_compute_region_target_http_proxy.default.id
network = google_compute_network.default.id
subnetwork = google_compute_subnetwork.ilb_subnet.id
network_tier = "PREMIUM"
project = "my-service-project-01"
depends_on = [google_compute_subnetwork.proxy_subnet]
}
# HTTP target proxy
resource "google_compute_region_target_http_proxy" "default" {
name = "l7-ilb-target-http-proxy"
region = "us-central1"
url_map = google_compute_region_url_map.default.id
project = "my-service-project-01"
}
# URL map
resource "google_compute_region_url_map" "default" {
name = "l7-ilb-regional-url-map"
region = "us-central1"
default_service = google_compute_region_backend_service.default.id
project = "my-service-project-01"
}
# regional health check
resource "google_compute_region_health_check" "default" {
project = "my-service-project-02"
name = "l7-ilb-rhc"
region = "us-central1"
http_health_check {
port_specification = "USE_SERVING_PORT"
}
}
# regional backend service
resource "google_compute_region_backend_service" "default" {
project = "my-service-project-02"
name = "l7-ilb-backend-service"
region = "us-central1"
protocol = "HTTP"
load_balancing_scheme = "INTERNAL_MANAGED"
timeout_sec = 10
health_checks = [google_compute_region_health_check.default.id]
backend {
group = google_compute_region_instance_group_manager.default.instance_group
balancing_mode = "UTILIZATION"
capacity_scaler = 1.0
}
}
# health check
resource "google_compute_health_check" "default" {
project = "my-service-project-02"
name = "l7-ilb-hc"
timeout_sec = 1
check_interval_sec = 1
tcp_health_check {
port = "80"
}
}
# instance template
resource "google_compute_instance_template" "default" {
project = "my-service-project-02"
name = "l7-ilb-mig-template"
machine_type = "e2-small"
tags = ["http-server"]
network_interface {
network = google_compute_network.default.id
subnetwork = google_compute_subnetwork.ilb_subnet.id
access_config {
# add external ip to fetch packages
}
}
disk {
source_image = "debian-cloud/debian-10"
auto_delete = true
boot = true
}
# install nginx and serve a simple web page
metadata = {
startup-script = <<-EOF1
#! /bin/bash
set -euo pipefail
export DEBIAN_FRONTEND=noninteractive
apt-get update
apt-get install -y nginx-light jq
NAME=$(curl -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/hostname")
IP=$(curl -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/network-interfaces/0/ip")
METADATA=$(curl -f -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/attributes/?recursive=True" | jq 'del(.["startup-script"])')
cat <<EOF > /var/www/html/index.html
<pre>
Name: $NAME
IP: $IP
Metadata: $METADATA
</pre>
EOF
EOF1
}
}
# MIG
resource "google_compute_region_instance_group_manager" "default" {
project = "my-service-project-02"
name = "l7-ilb-mig1"
region = "us-central1"
version {
instance_template = google_compute_instance_template.default.id
name = "primary"
}
base_instance_name = "vm"
target_size = 2
auto_healing_policies {
health_check = google_compute_health_check.default.id
initial_delay_sec = 300
}
depends_on = [google_project_iam_binding.default]
}
data "google_project" "service_project02" {
project_id = "my-service-project-02"
}
# IAM Role
resource "google_project_iam_binding" "default" {
project = "my-host-project"
role = "roles/compute.networkUser"
members = [
"serviceAccount:${data.google_project.service_project02.number}@cloudservices.gserviceaccount.com",
]
}
# test instance
resource "google_compute_instance" "test_vm" {
project = "my-service-project-02"
name = "l7-ilb-test-vm"
zone = "us-central1-b"
machine_type = "e2-small"
network_interface {
network = google_compute_network.default.id
subnetwork = google_compute_subnetwork.ilb_subnet.id
}
boot_disk {
initialize_params {
image = "debian-cloud/debian-10"
}
}
lifecycle {
ignore_changes = [
metadata["ssh-keys"]
]
}
depends_on = [google_project_iam_binding.default]
}