Google's Backend Services gives users control over the session affinity modes. Let's allow Terraform users to leverage this option. We don't change the default value ("NONE", as provided by Google).
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layout | page_title | sidebar_current | description |
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Google: google_compute_backend_service | docs-google-compute-backend-service | Creates a Backend Service resource for Google Compute Engine. |
google_compute_backend_service
A Backend Service defines a group of virtual machines that will serve traffic for load balancing.
Example Usage
resource "google_compute_backend_service" "foobar" {
name = "blablah"
description = "Hello World 1234"
port_name = "http"
protocol = "HTTP"
timeout_sec = 10
enable_cdn = false
backend {
group = "${google_compute_instance_group_manager.foo.instance_group}"
}
health_checks = ["${google_compute_http_health_check.default.self_link}"]
}
resource "google_compute_instance_group_manager" "foo" {
name = "terraform-test"
instance_template = "${google_compute_instance_template.foobar.self_link}"
base_instance_name = "foobar"
zone = "us-central1-f"
target_size = 1
}
resource "google_compute_instance_template" "foobar" {
name = "terraform-test"
machine_type = "n1-standard-1"
network_interface {
network = "default"
}
disk {
source_image = "debian-cloud/debian-8"
auto_delete = true
boot = true
}
}
resource "google_compute_http_health_check" "default" {
name = "test"
request_path = "/"
check_interval_sec = 1
timeout_sec = 1
}
Argument Reference
The following arguments are supported:
-
name
- (Required) The name of the backend service. -
health_checks
- (Required) Specifies a list of HTTP health check objects for checking the health of the backend service.
-
backend
- (Optional) The list of backends that serve this BackendService. See Backend below. -
description
- (Optional) The textual description for the backend service. -
enable_cdn
- (Optional) Whether or not to enable the Cloud CDN on the backend service. -
port_name
- (Optional) The name of a service that has been added to an instance group in this backend. See related docs for details. Defaults to http. -
project
- (Optional) The project in which the resource belongs. If it is not provided, the provider project is used. -
protocol
- (Optional) The protocol for incoming requests. Defaults toHTTP
. -
region
- (Optional) The Region in which the created address should reside. If it is not provided, the provider region is used. -
session_affinity
- (Optional) How to distribute load. Options are "NONE" (no affinity), "CLIENT_IP" (hash of the source/dest addresses / ports), and "GENERATED_COOKIE" (distribute load using a generated session cookie). -
timeout_sec
- (Optional) The number of secs to wait for a backend to respond to a request before considering the request failed. Defaults to30
.
Backend supports the following attributes:
-
group
- (Required) The name or URI of a Compute Engine instance group (google_compute_instance_group_manager.xyz.instance_group
) that can receive traffic. -
balancing_mode
- (Optional) Defines the strategy for balancing load. Defaults toUTILIZATION
-
capacity_scaler
- (Optional) A float in the range [0, 1.0] that scales the maximum parameters for the group (e.g., max rate). A value of 0.0 will cause no requests to be sent to the group (i.e., it adds the group in a drained state). The default is 1.0. -
description
- (Optional) Textual description for the backend. -
max_rate
- (Optional) Maximum requests per second (RPS) that the group can handle. -
max_rate_per_instance
- (Optional) The maximum per-instance requests per second (RPS). -
max_utilization
- (Optional) The target CPU utilization for the group as a float in the range [0.0, 1.0]. This flag can only be provided when the balancing mode isUTILIZATION
. Defaults to0.8
.
Attributes Reference
In addition to the arguments listed above, the following computed attributes are exported:
-
fingerprint
- The fingerprint of the backend service. -
self_link
- The URI of the created resource.