Ejemplos de Terraform para balanceadores de cargas de red del proxy externos

Puedes usar el siguiente ejemplo para implementar balanceadores de cargas de red del proxy externos.

Si es la primera vez que usas Terraform para Google Cloud, consulta Comienza a usar Terraform.

Crea un balanceador de cargas de red del proxy externo con un proxy TCP

Puedes usar recursos de Terraform para abrir un balanceador de cargas de red del proxy externo 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
resource "google_compute_network" "default" {
  name                    = "tcp-proxy-xlb-network"
  provider                = google-beta
  auto_create_subnetworks = false
}

# backend subnet
resource "google_compute_subnetwork" "default" {
  name          = "tcp-proxy-xlb-subnet"
  provider      = google-beta
  ip_cidr_range = "10.0.1.0/24"
  region        = "us-central1"
  network       = google_compute_network.default.id
}

# reserved IP address
resource "google_compute_global_address" "default" {
  provider = google-beta
  name     = "tcp-proxy-xlb-ip"
}

# forwarding rule
resource "google_compute_global_forwarding_rule" "default" {
  name                  = "tcp-proxy-xlb-forwarding-rule"
  provider              = google-beta
  ip_protocol           = "TCP"
  load_balancing_scheme = "EXTERNAL"
  port_range            = "110"
  target                = google_compute_target_tcp_proxy.default.id
  ip_address            = google_compute_global_address.default.id
}

resource "google_compute_target_tcp_proxy" "default" {
  provider        = google-beta
  name            = "test-proxy-health-check"
  backend_service = google_compute_backend_service.default.id
}

# backend service
resource "google_compute_backend_service" "default" {
  provider              = google-beta
  name                  = "tcp-proxy-xlb-backend-service"
  protocol              = "TCP"
  port_name             = "tcp"
  load_balancing_scheme = "EXTERNAL"
  timeout_sec           = 10
  health_checks         = [google_compute_health_check.default.id]
  backend {
    group           = google_compute_instance_group_manager.default.instance_group
    balancing_mode  = "UTILIZATION"
    max_utilization = 1.0
    capacity_scaler = 1.0
  }
}

resource "google_compute_health_check" "default" {
  provider           = google-beta
  name               = "tcp-proxy-health-check"
  timeout_sec        = 1
  check_interval_sec = 1

  tcp_health_check {
    port = "80"
  }
}

# instance template
resource "google_compute_instance_template" "default" {
  name         = "tcp-proxy-xlb-mig-template"
  provider     = google-beta
  machine_type = "e2-small"
  tags         = ["allow-health-check"]

  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-12"
    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
  }
}

# MIG
resource "google_compute_instance_group_manager" "default" {
  name     = "tcp-proxy-xlb-mig1"
  provider = google-beta
  zone     = "us-central1-c"
  named_port {
    name = "tcp"
    port = 80
  }
  version {
    instance_template = google_compute_instance_template.default.id
    name              = "primary"
  }
  base_instance_name = "vm"
  target_size        = 2
}

# allow access from health check ranges
resource "google_compute_firewall" "default" {
  name          = "tcp-proxy-xlb-fw-allow-hc"
  provider      = google-beta
  direction     = "INGRESS"
  network       = google_compute_network.default.id
  source_ranges = ["130.211.0.0/22", "35.191.0.0/16"]
  allow {
    protocol = "tcp"
  }
  target_tags = ["allow-health-check"]
}

Crea un balanceador de cargas de red del proxy externo con un proxy SSL

Puedes usar recursos de Terraform para abrir un balanceador de cargas de red del proxy externo 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
resource "google_compute_network" "default" {
  name                    = "ssl-proxy-xlb-network"
  provider                = google
  auto_create_subnetworks = false
}

# backend subnet
resource "google_compute_subnetwork" "default" {
  name          = "ssl-proxy-xlb-subnet"
  provider      = google
  ip_cidr_range = "10.0.1.0/24"
  region        = "us-central1"
  network       = google_compute_network.default.id
}

# reserved IP address
resource "google_compute_global_address" "default" {
  name = "ssl-proxy-xlb-ip"
}


# 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_ssl_certificate" "default" {
  name        = "default-cert"
  private_key = tls_private_key.default.private_key_pem
  certificate = tls_self_signed_cert.default.cert_pem
}

resource "google_compute_target_ssl_proxy" "default" {
  name             = "test-proxy"
  backend_service  = google_compute_backend_service.default.id
  ssl_certificates = [google_compute_ssl_certificate.default.id]
}



# forwarding rule
resource "google_compute_global_forwarding_rule" "default" {
  name                  = "ssl-proxy-xlb-forwarding-rule"
  provider              = google
  ip_protocol           = "TCP"
  load_balancing_scheme = "EXTERNAL"
  port_range            = "443"
  target                = google_compute_target_ssl_proxy.default.id
  ip_address            = google_compute_global_address.default.id
}


# backend service
resource "google_compute_backend_service" "default" {
  name                  = "ssl-proxy-xlb-backend-service"
  protocol              = "SSL"
  port_name             = "tcp"
  load_balancing_scheme = "EXTERNAL"
  timeout_sec           = 10
  health_checks         = [google_compute_health_check.default.id]
  backend {
    group           = google_compute_instance_group_manager.default.instance_group
    balancing_mode  = "UTILIZATION"
    max_utilization = 1.0
    capacity_scaler = 1.0
  }
}

resource "google_compute_health_check" "default" {
  name               = "ssl-proxy-health-check"
  timeout_sec        = 1
  check_interval_sec = 1
  tcp_health_check {
    port = "443"
  }
}

# instance template
resource "google_compute_instance_template" "default" {
  name         = "ssl-proxy-xlb-mig-template"
  provider     = google
  machine_type = "e2-small"
  tags         = ["allow-health-check"]

  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-12"
    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
      sudo apt-get update
      sudo apt-get install  -y apache2 jq
      sudo a2ensite default-ssl
      sudo a2enmod ssl
      sudo service apache2 restart
      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
      <h1>SSL Load Balancer</h1>
      <pre>
      Name: $NAME
      IP: $IP
      Metadata: $METADATA
      </pre>
      EOF
    EOF1
  }
  lifecycle {
    create_before_destroy = true
  }
}

# MIG
resource "google_compute_instance_group_manager" "default" {
  name     = "ssl-proxy-xlb-mig1"
  provider = google
  zone     = "us-central1-c"
  named_port {
    name = "tcp"
    port = 443
  }
  version {
    instance_template = google_compute_instance_template.default.id
    name              = "primary"
  }
  base_instance_name = "vm"
  target_size        = 2
}

# allow access from health check ranges
resource "google_compute_firewall" "default" {
  name          = "ssl-proxy-xlb-fw-allow-hc"
  provider      = google
  direction     = "INGRESS"
  network       = google_compute_network.default.id
  source_ranges = ["130.211.0.0/22", "35.191.0.0/16"]
  allow {
    protocol = "tcp"
  }
  target_tags = ["allow-health-check"]
}