Add a group of backend servers (ECS or ENI instance) to the Server Load Balancer or remove them from it.

-> NOTE: Available in 1.53.0+

Example Usage

// alicloud_slb_backend_server
variable "slb_backend_server_name" {
  default = "slbbackendservertest"
}

data "alicloud_zones" "backend_server" {
  available_disk_category     = "cloud_efficiency"
  available_resource_creation = "VSwitch"
}

data "alicloud_instance_types" "backend_server" {
  availability_zone = data.alicloud_zones.backend_server.zones[0].id
  cpu_core_count    = 1
  memory_size       = 2
}

data "alicloud_images" "backend_server" {
  name_regex  = "^ubuntu_18.*64"
  most_recent = true
  owners      = "system"
}

resource "alicloud_vpc" "backend_server" {
  vpc_name   = var.slb_backend_server_name
  cidr_block = "172.16.0.0/16"
}

resource "alicloud_vswitch" "backend_server" {
  vpc_id       = alicloud_vpc.backend_server.id
  cidr_block   = "172.16.0.0/16"
  zone_id      = data.alicloud_zones.backend_server.zones[0].id
  vswitch_name = var.slb_backend_server_name
}

resource "alicloud_security_group" "backend_server" {
  name   = var.slb_backend_server_name
  vpc_id = alicloud_vpc.backend_server.id
}

resource "alicloud_instance" "backend_server" {
  image_id                   = data.alicloud_images.backend_server.images[0].id
  instance_type              = data.alicloud_instance_types.backend_server.instance_types[0].id
  instance_name              = var.slb_backend_server_name
  count                      = "2"
  security_groups            = alicloud_security_group.backend_server.*.id
  internet_charge_type       = "PayByTraffic"
  internet_max_bandwidth_out = "10"
  availability_zone          = data.alicloud_zones.backend_server.zones[0].id
  instance_charge_type       = "PostPaid"
  system_disk_category       = "cloud_efficiency"
  vswitch_id                 = alicloud_vswitch.backend_server.id
}

resource "alicloud_slb_load_balancer" "backend_server" {
  load_balancer_name   = var.slb_backend_server_name
  vswitch_id           = alicloud_vswitch.backend_server.id
  instance_charge_type = "PayByCLCU"
}

resource "alicloud_slb_backend_server" "backend_server" {
  load_balancer_id = alicloud_slb_load_balancer.backend_server.id

  backend_servers {
    server_id = alicloud_instance.backend_server[0].id
    weight    = 100
  }

  backend_servers {
    server_id = alicloud_instance.backend_server[1].id
    weight    = 100
  }
}

Argument Reference

The following arguments are supported:

• load_balancer_id - (Required) ID of the load balancer.
• backend_servers - (Optional) A list of instances to added backend server in the SLB. It contains three sub-fields as Block server follows.
• delete_protection_validation - (Optional, Available in 1.63.0+) Checking DeleteProtection of SLB instance before deleting. If true, this resource will not be deleted when its SLB instance enabled DeleteProtection. Default to false.

Block servers

The servers mapping supports the following:

• server_id - (Required) A list backend server ID (ECS instance ID).
• weight - (Optional) Weight of the backend server. Valid value range: [0-100].
• type - (Optional) Type of the backend server. Valid value ecs, eni, eci. Default to ecs. NOTE: From 1.170.0+, The eci is valid.
• server_ip - (Optional, Computed, Available in 1.93.0+) ServerIp of the backend server. This parameter can be specified when the type is eni. ecs type currently does not support adding server_ip parameter.

Attributes Reference

The following attributes are exported:

• id - The ID of the resource and the value same as load balancer id.

Import

Load balancer backend server can be imported using the load balancer id.

$ terraform import alicloud_slb_backend_server.example <load_balancer_id>