Documentation

gcp_container_node_pool - Creates a GCP NodePool

New in version 2.6.

Synopsis

  • NodePool contains the name and configuration for a cluster’s node pool.
  • Node pools are a set of nodes (i.e. VM’s), with a common configuration and specification, under the control of the cluster master. They may have a set of Kubernetes labels applied to them, which may be used to reference them during pod scheduling. They may also be resized up or down, to accommodate the workload.

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
required
    Choices:
  • machineaccount
  • serviceaccount
  • application
The type of credential used.
autoscaling
Autoscaler configuration for this NodePool. Autoscaler is enabled only if a valid configuration is present.
enabled
bool
    Choices:
  • no
  • yes
Is autoscaling enabled for this node pool.
min_node_count
Minimum number of nodes in the NodePool. Must be >= 1 and <= maxNodeCount.
max_node_count
Maximum number of nodes in the NodePool. Must be >= minNodeCount.
There has to enough quota to scale up the cluster.
cluster
required
The cluster this node pool belongs to.
config
The node configuration of the pool.
disk_size_gb
Size of the disk attached to each node, specified in GB. The smallest allowed disk size is 10GB. If unspecified, the default disk size is 100GB.
service_account
The Google Cloud Platform Service Account to be used by the node VMs. If no Service Account is specified, the "default" service account is used.
tags
The list of instance tags applied to all nodes. Tags are used to identify valid sources or targets for network firewalls and are specified by the client during cluster or node pool creation. Each tag within the list must comply with RFC1035.
image_type
The image type to use for this node. Note that for a given image type, the latest version of it will be used.
preemptible
bool
    Choices:
  • no
  • yes
Whether the nodes are created as preemptible VM instances. See: https://cloud.google.com/compute/docs/instances/preemptible for more inforamtion about preemptible VM instances.
labels
The map of Kubernetes labels (key/value pairs) to be applied to each node. These will added in addition to any default label(s) that Kubernetes may apply to the node. In case of conflict in label keys, the applied set may differ depending on the Kubernetes version -- it's best to assume the behavior is undefined and conflicts should be avoided. For more information, including usage and the valid values, see: http://kubernetes.io/v1.1/docs/user-guide/labels.html An object containing a list of "key": value pairs.
Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
local_ssd_count
The number of local SSD disks to be attached to the node.
The limit for this value is dependant upon the maximum number of disks available on a machine per zone. See: https://cloud.google.com/compute/docs/disks/local-ssd#local_ssd_limits for more information.
oauth_scopes
The set of Google API scopes to be made available on all of the node VMs under the "default" service account.
The following scopes are recommended, but not required, and by default are not included: https://www.googleapis.com/auth/compute is required for mounting persistent storage on your nodes.
https://www.googleapis.com/auth/devstorage.read_only is required for communicating with gcr.io (the Google Container Registry).
If unspecified, no scopes are added, unless Cloud Logging or Cloud Monitoring are enabled, in which case their required scopes will be added.
machine_type
The name of a Google Compute Engine machine type (e.g.
n1-standard-1). If unspecified, the default machine type is n1-standard-1.
metadata
The metadata key/value pairs assigned to instances in the cluster.
Keys must conform to the regexp [a-zA-Z0-9-_]+ and be less than 128 bytes in length. These are reflected as part of a URL in the metadata server. Additionally, to avoid ambiguity, keys must not conflict with any other metadata keys for the project or be one of the four reserved keys: "instance-template", "kube-env", "startup-script", and "user-data" Values are free-form strings, and only have meaning as interpreted by the image running in the instance. The only restriction placed on them is that each value's size must be less than or equal to 32 KB.
The total size of all keys and values must be less than 512 KB.
An object containing a list of "key": value pairs.
Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
initial_node_count
required
The initial node count for the pool. You must ensure that your Compute Engine resource quota is sufficient for this number of instances. You must also have available firewall and routes quota.
management
Management configuration for this NodePool.
auto_upgrade
bool
    Choices:
  • no
  • yes
A flag that specifies whether node auto-upgrade is enabled for the node pool. If enabled, node auto-upgrade helps keep the nodes in your node pool up to date with the latest release version of Kubernetes.
auto_repair
bool
    Choices:
  • no
  • yes
A flag that specifies whether the node auto-repair is enabled for the node pool. If enabled, the nodes in this node pool will be monitored and, if they fail health checks too many times, an automatic repair action will be triggered.
upgrade_options
Specifies the Auto Upgrade knobs for the node pool.
auto_upgrade_start_time
This field is set when upgrades are about to commence with the approximate start time for the upgrades, in RFC3339 text format.
description
This field is set when upgrades are about to commence with the description of the upgrade.
name
The name of the node pool.
project Default:
None
The Google Cloud Platform project to use.
scopes
Array of scopes to be used.
service_account_email
An optional service account email address if machineaccount is selected and the user does not wish to use the default email.
service_account_file
The path of a Service Account JSON file if serviceaccount is selected as type.
state
    Choices:
  • present ←
  • absent
Whether the given object should exist in GCP
zone
required
The zone where the node pool is deployed.

Notes

Note

  • For authentication, you can set service_account_file using the GCP_SERVICE_ACCOUNT_FILE 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 cluster
  gcp_container_cluster:
      name: "cluster-nodepool"
      initial_node_count: 4
      zone: us-central1-a
      project: "{{ gcp_project }}"
      auth_kind: "{{ gcp_cred_kind }}"
      service_account_file: "{{ gcp_cred_file }}"
      state: present
  register: cluster

- name: create a node pool
  gcp_container_node_pool:
      name: "test_object"
      initial_node_count: 4
      cluster: "{{ cluster }}"
      zone: us-central1-a
      project: "test_project"
      auth_kind: "service_account"
      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
autoscaling
complex
success
Autoscaler configuration for this NodePool. Autoscaler is enabled only if a valid configuration is present.

  enabled
bool
success
Is autoscaling enabled for this node pool.

  min_node_count
int
success
Minimum number of nodes in the NodePool. Must be >= 1 and <= maxNodeCount.

  max_node_count
int
success
Maximum number of nodes in the NodePool. Must be >= minNodeCount.
There has to enough quota to scale up the cluster.

cluster
dict
success
The cluster this node pool belongs to.

config
complex
success
The node configuration of the pool.

  disk_size_gb
int
success
Size of the disk attached to each node, specified in GB. The smallest allowed disk size is 10GB. If unspecified, the default disk size is 100GB.

  service_account
str
success
The Google Cloud Platform Service Account to be used by the node VMs. If no Service Account is specified, the "default" service account is used.

  tags
list
success
The list of instance tags applied to all nodes. Tags are used to identify valid sources or targets for network firewalls and are specified by the client during cluster or node pool creation. Each tag within the list must comply with RFC1035.

  image_type
str
success
The image type to use for this node. Note that for a given image type, the latest version of it will be used.

  preemptible
bool
success
Whether the nodes are created as preemptible VM instances. See: https://cloud.google.com/compute/docs/instances/preemptible for more inforamtion about preemptible VM instances.

  labels
dict
success
The map of Kubernetes labels (key/value pairs) to be applied to each node. These will added in addition to any default label(s) that Kubernetes may apply to the node. In case of conflict in label keys, the applied set may differ depending on the Kubernetes version -- it's best to assume the behavior is undefined and conflicts should be avoided. For more information, including usage and the valid values, see: http://kubernetes.io/v1.1/docs/user-guide/labels.html An object containing a list of "key": value pairs.
Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.

  local_ssd_count
int
success
The number of local SSD disks to be attached to the node.
The limit for this value is dependant upon the maximum number of disks available on a machine per zone. See: https://cloud.google.com/compute/docs/disks/local-ssd#local_ssd_limits for more information.

  oauth_scopes
list
success
The set of Google API scopes to be made available on all of the node VMs under the "default" service account.
The following scopes are recommended, but not required, and by default are not included: https://www.googleapis.com/auth/compute is required for mounting persistent storage on your nodes.
https://www.googleapis.com/auth/devstorage.read_only is required for communicating with gcr.io (the Google Container Registry).
If unspecified, no scopes are added, unless Cloud Logging or Cloud Monitoring are enabled, in which case their required scopes will be added.

  machine_type
str
success
The name of a Google Compute Engine machine type (e.g.
n1-standard-1). If unspecified, the default machine type is n1-standard-1.

  metadata
dict
success
The metadata key/value pairs assigned to instances in the cluster.
Keys must conform to the regexp [a-zA-Z0-9-_]+ and be less than 128 bytes in length. These are reflected as part of a URL in the metadata server. Additionally, to avoid ambiguity, keys must not conflict with any other metadata keys for the project or be one of the four reserved keys: "instance-template", "kube-env", "startup-script", and "user-data" Values are free-form strings, and only have meaning as interpreted by the image running in the instance. The only restriction placed on them is that each value's size must be less than or equal to 32 KB.
The total size of all keys and values must be less than 512 KB.
An object containing a list of "key": value pairs.
Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.

initial_node_count
int
success
The initial node count for the pool. You must ensure that your Compute Engine resource quota is sufficient for this number of instances. You must also have available firewall and routes quota.

management
complex
success
Management configuration for this NodePool.

  auto_upgrade
bool
success
A flag that specifies whether node auto-upgrade is enabled for the node pool. If enabled, node auto-upgrade helps keep the nodes in your node pool up to date with the latest release version of Kubernetes.

  auto_repair
bool
success
A flag that specifies whether the node auto-repair is enabled for the node pool. If enabled, the nodes in this node pool will be monitored and, if they fail health checks too many times, an automatic repair action will be triggered.

  upgrade_options
complex
success
Specifies the Auto Upgrade knobs for the node pool.

    auto_upgrade_start_time
str
success
This field is set when upgrades are about to commence with the approximate start time for the upgrades, in RFC3339 text format.

    description
str
success
This field is set when upgrades are about to commence with the description of the upgrade.

name
str
success
The name of the node pool.

version
str
success
The version of the Kubernetes of this node.

zone
str
success
The zone where the node pool is deployed.



Status

This module is flagged as preview which means that it is not guaranteed to have a backwards compatible interface.

Maintenance

This module is flagged as community which means that it is maintained by the Ansible Community. See Module Maintenance & Support for more info.

For a list of other modules that are also maintained by the Ansible Community, see here.

Author

  • Google Inc. (@googlecloudplatform)

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