gcp_compute_autoscaler – Creates a GCP Autoscaler

gcp_compute_autoscaler – Creates a GCP Autoscaler

New in version 2.9.

• Synopsis
• Requirements
• Parameters
• Notes
• Examples
• Return Values
• Status

Synopsis

• Represents an Autoscaler resource.
• Autoscalers allow you to automatically scale virtual machine instances in managed instance groups according to an autoscaling policy that you define.

Requirements

The below requirements are needed on the host that executes this module.

• python >= 2.6
• requests >= 2.18.4
• google-auth >= 1.3.0

Parameters

Parameter			Choices/Defaults	Comments
auth_kind string / required			application machineaccount serviceaccount	The type of credential used.
autoscaling_policy dictionary / required				The configuration parameters for the autoscaling algorithm. You can define one or more of the policies for an autoscaler: cpuUtilization, customMetricUtilizations, and loadBalancingUtilization. If none of these are specified, the default will be to autoscale based on cpuUtilization to 0.6 or 60%.
	cool_down_period_sec integer		Default: "60"	The number of seconds that the autoscaler should wait before it starts collecting information from a new instance. This prevents the autoscaler from collecting information when the instance is initializing, during which the collected usage would not be reliable. The default time autoscaler waits is 60 seconds. Virtual machine initialization times might vary because of numerous factors. We recommend that you test how long an instance may take to initialize. To do this, create an instance and time the startup process. aliases: cooldownPeriod
	cpu_utilization dictionary			Defines the CPU utilization policy that allows the autoscaler to scale based on the average CPU utilization of a managed instance group.
		utilization_target string		The target CPU utilization that the autoscaler should maintain. Must be a float value in the range (0, 1]. If not specified, the default is 0.6. If the CPU level is below the target utilization, the autoscaler scales down the number of instances until it reaches the minimum number of instances you specified or until the average CPU of your instances reaches the target utilization. If the average CPU is above the target utilization, the autoscaler scales up until it reaches the maximum number of instances you specified or until the average utilization reaches the target utilization. aliases: target
	custom_metric_utilizations list			Defines the CPU utilization policy that allows the autoscaler to scale based on the average CPU utilization of a managed instance group. aliases: metric
		metric string / required		The identifier (type) of the Stackdriver Monitoring metric. The metric cannot have negative values. The metric must have a value type of INT64 or DOUBLE. aliases: name
		utilization_target string		The target value of the metric that autoscaler should maintain. This must be a positive value. A utilization metric scales number of virtual machines handling requests to increase or decrease proportionally to the metric. For example, a good metric to use as a utilizationTarget is www.googleapis.com/compute/instance/network/received_bytes_count. The autoscaler will work to keep this value constant for each of the instances. aliases: target
		utilization_target_type string		Defines how target utilization value is expressed for a Stackdriver Monitoring metric. Either GAUGE, DELTA_PER_SECOND, or DELTA_PER_MINUTE. Some valid choices include: "GAUGE", "DELTA_PER_SECOND", "DELTA_PER_MINUTE" aliases: type
	load_balancing_utilization dictionary			Configuration parameters of autoscaling based on a load balancer.
		utilization_target string		Fraction of backend capacity utilization (set in HTTP(s) load balancing configuration) that autoscaler should maintain. Must be a positive float value. If not defined, the default is 0.8. aliases: target
	max_num_replicas integer / required			The maximum number of instances that the autoscaler can scale up to. This is required when creating or updating an autoscaler. The maximum number of replicas should not be lower than minimal number of replicas. aliases: maxReplicas
	min_num_replicas integer			The minimum number of replicas that the autoscaler can scale down to. This cannot be less than 0. If not provided, autoscaler will choose a default value depending on maximum number of instances allowed. aliases: minReplicas
description string				An optional description of this resource.
env_type string				Specifies which Ansible environment you're running this module within. This should not be set unless you know what you're doing. This only alters the User Agent string for any API requests.
name string / required				Name of the resource. The name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
project string				The Google Cloud Platform project to use.
scopes list				Array of scopes to be used.
service_account_contents jsonarg				The contents of a Service Account JSON file, either in a dictionary or as a JSON string that represents it.
service_account_email string				An optional service account email address if machineaccount is selected and the user does not wish to use the default email.
service_account_file path				The path of a Service Account JSON file if serviceaccount is selected as type.
state string			present ← absent	Whether the given object should exist in GCP
target dictionary / required				URL of the managed instance group that this autoscaler will scale. This field represents a link to a InstanceGroupManager resource in GCP. It can be specified in two ways. First, you can place a dictionary with key 'selfLink' and value of your resource's selfLink Alternatively, you can add `register: name-of-resource` to a gcp_compute_instance_group_manager task and then set this target field to "Template:Name-of-resource"
zone string / required				URL of the zone where the instance group resides.

Notes

Note

• API Reference: https://cloud.google.com/compute/docs/reference/rest/v1/autoscalers
• Autoscaling Groups of Instances: https://cloud.google.com/compute/docs/autoscaler/
• for authentication, you can set service_account_file using the c(gcp_service_account_file) env variable.
• for authentication, you can set service_account_contents using the c(GCP_SERVICE_ACCOUNT_CONTENTS) env variable.
• For authentication, you can set service_account_email using the GCP_SERVICE_ACCOUNT_EMAIL env variable.
• For authentication, you can set auth_kind using the GCP_AUTH_KIND env variable.
• For authentication, you can set scopes using the GCP_SCOPES env variable.
• Environment variables values will only be used if the playbook values are not set.
• The service_account_email and service_account_file options are mutually exclusive.

Examples

- name: create a network
  gcp_compute_network:
    name: network-instancetemplate
    project: "{{ gcp_project }}"
    auth_kind: "{{ gcp_cred_kind }}"
    service_account_file: "{{ gcp_cred_file }}"
    state: present
  register: network

- name: create a address
  gcp_compute_address:
    name: address-instancetemplate
    region: us-central1
    project: "{{ gcp_project }}"
    auth_kind: "{{ gcp_cred_kind }}"
    service_account_file: "{{ gcp_cred_file }}"
    state: present
  register: address

- name: create a instance template
  gcp_compute_instance_template:
    name: "{{ resource_name }}"
    properties:
      disks:
      - auto_delete: 'true'
        boot: 'true'
        initialize_params:
          source_image: projects/ubuntu-os-cloud/global/images/family/ubuntu-1604-lts
      machine_type: n1-standard-1
      network_interfaces:
      - network: "{{ network }}"
        access_configs:
        - name: test-config
          type: ONE_TO_ONE_NAT
          nat_ip: "{{ address }}"
    project: "{{ gcp_project }}"
    auth_kind: "{{ gcp_cred_kind }}"
    service_account_file: "{{ gcp_cred_file }}"
    state: present
  register: instancetemplate

- name: create a instance group manager
  gcp_compute_instance_group_manager:
    name: "{{ resource_name }}"
    base_instance_name: test1-child
    instance_template: "{{ instancetemplate }}"
    target_size: 3
    zone: us-central1-a
    project: "{{ gcp_project }}"
    auth_kind: "{{ gcp_cred_kind }}"
    service_account_file: "{{ gcp_cred_file }}"
    state: present
  register: igm

- name: create a autoscaler
  gcp_compute_autoscaler:
    name: test_object
    zone: us-central1-a
    target: "{{ igm }}"
    autoscaling_policy:
      max_num_replicas: 5
      min_num_replicas: 1
      cool_down_period_sec: 60
      cpu_utilization:
        utilization_target: 0.5
    project: test_project
    auth_kind: serviceaccount
    service_account_file: "/tmp/auth.pem"
    state: present

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key			Returned	Description
autoscalingPolicy complex			success	The configuration parameters for the autoscaling algorithm. You can define one or more of the policies for an autoscaler: cpuUtilization, customMetricUtilizations, and loadBalancingUtilization. If none of these are specified, the default will be to autoscale based on cpuUtilization to 0.6 or 60%.
	coolDownPeriodSec integer		success	The number of seconds that the autoscaler should wait before it starts collecting information from a new instance. This prevents the autoscaler from collecting information when the instance is initializing, during which the collected usage would not be reliable. The default time autoscaler waits is 60 seconds. Virtual machine initialization times might vary because of numerous factors. We recommend that you test how long an instance may take to initialize. To do this, create an instance and time the startup process.
	cpuUtilization complex		success	Defines the CPU utilization policy that allows the autoscaler to scale based on the average CPU utilization of a managed instance group.
		utilizationTarget string	success	The target CPU utilization that the autoscaler should maintain. Must be a float value in the range (0, 1]. If not specified, the default is 0.6. If the CPU level is below the target utilization, the autoscaler scales down the number of instances until it reaches the minimum number of instances you specified or until the average CPU of your instances reaches the target utilization. If the average CPU is above the target utilization, the autoscaler scales up until it reaches the maximum number of instances you specified or until the average utilization reaches the target utilization.
	customMetricUtilizations complex		success	Defines the CPU utilization policy that allows the autoscaler to scale based on the average CPU utilization of a managed instance group.
		metric string	success	The identifier (type) of the Stackdriver Monitoring metric. The metric cannot have negative values. The metric must have a value type of INT64 or DOUBLE.
		utilizationTarget string	success	The target value of the metric that autoscaler should maintain. This must be a positive value. A utilization metric scales number of virtual machines handling requests to increase or decrease proportionally to the metric. For example, a good metric to use as a utilizationTarget is www.googleapis.com/compute/instance/network/received_bytes_count. The autoscaler will work to keep this value constant for each of the instances.
		utilizationTargetType string	success	Defines how target utilization value is expressed for a Stackdriver Monitoring metric. Either GAUGE, DELTA_PER_SECOND, or DELTA_PER_MINUTE.
	loadBalancingUtilization complex		success	Configuration parameters of autoscaling based on a load balancer.
		utilizationTarget string	success	Fraction of backend capacity utilization (set in HTTP(s) load balancing configuration) that autoscaler should maintain. Must be a positive float value. If not defined, the default is 0.8.
	maxNumReplicas integer		success	The maximum number of instances that the autoscaler can scale up to. This is required when creating or updating an autoscaler. The maximum number of replicas should not be lower than minimal number of replicas.
	minNumReplicas integer		success	The minimum number of replicas that the autoscaler can scale down to. This cannot be less than 0. If not provided, autoscaler will choose a default value depending on maximum number of instances allowed.
creationTimestamp string			success	Creation timestamp in RFC3339 text format.
description string			success	An optional description of this resource.
id integer			success	Unique identifier for the resource.
name string			success	Name of the resource. The name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
target dictionary			success	URL of the managed instance group that this autoscaler will scale.
zone string			success	URL of the zone where the instance group resides.

Status

• This module is not guaranteed to have a backwards compatible interface. [preview]
• This module is maintained by the Ansible Community. [community]

Authors

• Google Inc. (@googlecloudplatform)

Hint

If you notice any issues in this documentation, you can edit this document to improve it.

© 2012–2018 Michael DeHaan
© 2018–2019 Red Hat, Inc.
Licensed under the GNU General Public License version 3.
https://docs.ansible.com/ansible/2.9/modules/gcp_compute_autoscaler_module.html