283 lines
9.0 KiB
HCL
283 lines
9.0 KiB
HCL
/**
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* Copyright 2022 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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variable "all_instances_config" {
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description = "Metadata and labels set to all instances in the group."
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type = object({
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labels = optional(map(string))
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metadata = optional(map(string))
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})
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default = null
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}
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variable "auto_healing_policies" {
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description = "Auto-healing policies for this group."
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type = object({
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health_check = optional(string)
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initial_delay_sec = number
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})
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default = null
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}
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variable "autoscaler_config" {
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description = "Optional autoscaler configuration."
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type = object({
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max_replicas = number
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min_replicas = number
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cooldown_period = optional(number)
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mode = optional(string) # OFF, ONLY_UP, ON
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scaling_control = optional(object({
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down = optional(object({
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max_replicas_fixed = optional(number)
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max_replicas_percent = optional(number)
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time_window_sec = optional(number)
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}))
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in = optional(object({
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max_replicas_fixed = optional(number)
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max_replicas_percent = optional(number)
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time_window_sec = optional(number)
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}))
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}), {})
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scaling_signals = optional(object({
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cpu_utilization = optional(object({
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target = number
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optimize_availability = optional(bool)
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}))
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load_balancing_utilization = optional(object({
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target = number
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}))
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metrics = optional(list(object({
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name = string
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type = string # GAUGE, DELTA_PER_SECOND, DELTA_PER_MINUTE
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target_value = number
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single_instance_assignment = optional(number)
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time_series_filter = optional(string)
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})))
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schedules = optional(list(object({
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duration_sec = number
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name = string
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min_required_replicas = number
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cron_schedule = string
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description = optional(bool)
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timezone = optional(string)
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disabled = optional(bool)
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})))
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}), {})
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})
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default = null
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}
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variable "default_version_name" {
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description = "Name used for the default version."
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type = string
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default = "default"
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}
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variable "description" {
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description = "Optional description used for all resources managed by this module."
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type = string
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default = "Terraform managed."
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}
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variable "distribution_policy" {
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description = "DIstribution policy for regional MIG."
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type = object({
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target_shape = optional(string)
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zones = optional(list(string))
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})
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default = null
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}
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variable "health_check_config" {
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description = "Optional auto-created health check configuration, use the output self-link to set it in the auto healing policy. Refer to examples for usage."
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type = object({
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check_interval_sec = optional(number)
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description = optional(string, "Terraform managed.")
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enable_logging = optional(bool, false)
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healthy_threshold = optional(number)
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timeout_sec = optional(number)
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unhealthy_threshold = optional(number)
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grpc = optional(object({
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port = optional(number)
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port_name = optional(string)
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port_specification = optional(string) # USE_FIXED_PORT USE_NAMED_PORT USE_SERVING_PORT
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service_name = optional(string)
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}))
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http = optional(object({
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host = optional(string)
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port = optional(number)
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port_name = optional(string)
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port_specification = optional(string) # USE_FIXED_PORT USE_NAMED_PORT USE_SERVING_PORT
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proxy_header = optional(string)
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request_path = optional(string)
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response = optional(string)
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}))
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http2 = optional(object({
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host = optional(string)
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port = optional(number)
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port_name = optional(string)
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port_specification = optional(string) # USE_FIXED_PORT USE_NAMED_PORT USE_SERVING_PORT
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proxy_header = optional(string)
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request_path = optional(string)
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response = optional(string)
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}))
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https = optional(object({
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host = optional(string)
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port = optional(number)
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port_name = optional(string)
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port_specification = optional(string) # USE_FIXED_PORT USE_NAMED_PORT USE_SERVING_PORT
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proxy_header = optional(string)
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request_path = optional(string)
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response = optional(string)
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}))
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tcp = optional(object({
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port = optional(number)
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port_name = optional(string)
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port_specification = optional(string) # USE_FIXED_PORT USE_NAMED_PORT USE_SERVING_PORT
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proxy_header = optional(string)
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request = optional(string)
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response = optional(string)
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}))
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ssl = optional(object({
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port = optional(number)
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port_name = optional(string)
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port_specification = optional(string) # USE_FIXED_PORT USE_NAMED_PORT USE_SERVING_PORT
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proxy_header = optional(string)
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request = optional(string)
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response = optional(string)
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}))
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})
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default = null
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validation {
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condition = (
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(try(var.health_check_config.grpc, null) == null ? 0 : 1) +
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(try(var.health_check_config.http, null) == null ? 0 : 1) +
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(try(var.health_check_config.http2, null) == null ? 0 : 1) +
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(try(var.health_check_config.https, null) == null ? 0 : 1) +
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(try(var.health_check_config.tcp, null) == null ? 0 : 1) +
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(try(var.health_check_config.ssl, null) == null ? 0 : 1) <= 1
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)
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error_message = "Only one health check type can be configured at a time."
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}
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}
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variable "instance_template" {
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description = "Instance template for the default version."
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type = string
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}
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variable "location" {
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description = "Compute zone or region."
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type = string
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}
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variable "name" {
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description = "Managed group name."
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type = string
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}
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variable "named_ports" {
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description = "Named ports."
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type = map(number)
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default = null
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}
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variable "project_id" {
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description = "Project id."
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type = string
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}
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variable "stateful_config" {
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description = "Stateful configuration for individual instances."
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type = map(object({
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minimal_action = optional(string)
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most_disruptive_action = optional(string)
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remove_state_on_destroy = optional(bool)
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preserved_state = optional(object({
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disks = optional(map(object({
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source = string
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delete_on_instance_deletion = optional(bool)
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read_only = optional(bool)
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})))
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metadata = optional(map(string))
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}))
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}))
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default = {}
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nullable = false
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}
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variable "stateful_disks" {
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description = "Stateful disk configuration applied at the MIG level to all instances, in device name => on permanent instance delete rule as boolean."
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type = map(bool)
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default = {}
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nullable = false
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}
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variable "target_pools" {
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description = "Optional list of URLs for target pools to which new instances in the group are added."
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type = list(string)
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default = []
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}
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variable "target_size" {
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description = "Group target size, leave null when using an autoscaler."
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type = number
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default = null
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}
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variable "update_policy" {
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description = "Update policy. Minimal action and type are required."
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type = object({
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minimal_action = string
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type = string
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max_surge = optional(object({
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fixed = optional(number)
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percent = optional(number)
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}))
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max_unavailable = optional(object({
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fixed = optional(number)
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percent = optional(number)
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}))
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min_ready_sec = optional(number)
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most_disruptive_action = optional(string)
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regional_redistribution_type = optional(string)
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replacement_method = optional(string)
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})
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default = null
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}
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variable "versions" {
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description = "Additional application versions, target_size is optional."
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type = map(object({
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instance_template = string
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target_size = optional(object({
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fixed = optional(number)
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percent = optional(number)
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}))
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}))
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default = {}
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nullable = false
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}
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variable "wait_for_instances" {
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description = "Wait for all instances to be created/updated before returning."
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type = object({
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enabled = bool
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status = optional(string)
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})
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default = null
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}
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