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Configure a load balancer

You can configure a load balancer to distribute traffic across your VM (Virtual Machine) using Terraform.

Before you begin​

To perform the actions described below, you must have:

  • A Numspot account
  • Terraform ↗ installed
  • A browser or an HTTP client
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The load balancer health checks must succeed in reaching your services so that the load balancer can direct traffic to the correct instances.

Create and deploy Numspot resources using Terraform​

To get started, first create the configuration file ↗.

You must then create the following resources:

Add the following blocks:

resource "numspot_vpc" "vpc" {
  ip_range = "10.0.0.0/16"
}

resource "numspot_subnet" "subnet" {
  vpc_id   = numspot_vpc.vpc.id
  ip_range = "10.0.0.0/24"
}

resource "numspot_vm" "vm-1" {
  image_id           = "<VM IMAGE>"
  subnet_id          = numspot_subnet.subnet.id
  type               = "<VM TYPE>"
  security_group_ids = [numspot_security_group.security-group.id]
}

resource "numspot_vm" "vm-2" {
  image_id           = "<VM IMAGE>"
  subnet_id          = numspot_subnet.subnet.id
  type               = "<VM TYPE>"
  security_group_ids = [numspot_security_group.security-group.id]
}

resource "numspot_internet_gateway" "internet-gateway" {
  vpc_id = numspot_vpc.vpc.id
}

resource "numspot_route_table" "route-table" {
  vpc_id    = numspot_vpc.vpc.id
  subnet_id = numspot_subnet.subnet.id

  routes = [{
    destination_ip_range = "0.0.0.0/0"
    gateway_id           = numspot_internet_gateway.internet-gateway.id
  }]
}

resource "numspot_security_group" "security-group" {
  vpc_id      = numspot_vpc.vpc.id
  name        = "security group name"
  description = "security group description"

  inbound_rules = [{
    from_port_range = 80
    to_port_range   = 80
    ip_protocol     = "tcp"
    ip_ranges       = ["0.0.0.0/0"]
  }]
}

resource "numspot_load_balancer" "load-balancer" {
  name = "nlb"
  listeners = [{
    load_balancer_port     = 80
    backend_port           = 80
    load_balancer_protocol = "TCP"
  }]

  subnets         = [numspot_subnet.subnet.id]
  security_groups = [numspot_security_group.security-group.id]
  backend_vm_ids  = [numspot_vm.vm-1.id, numspot_vm.vm-2.id]

  type = "internet-facing"

  health_check = {
    healthy_threshold   = 10
    check_interval      = 30
    path                = "/"
    port                = 80
    protocol            = "HTTP"
    timeout             = 5
    unhealthy_threshold = 5
  }
}

Your configuration is now ready to be deployed on the Numspot infrastructure ↗.

Permissions​

info

This action requires the following IAM (Identity and Access Management) permissions:

  • compute.vpc.create
  • compute.subnet.create
  • compute.vm.create
  • compute.internetGateway.create
  • compute.routeTable.create
  • compute.securityGroup.create
  • compute.loadBalancer.create
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