k8s_facts – Describe Kubernetes (K8s) objects

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Ansible/docs/2.8/modules/k8s facts module


k8s_facts – Describe Kubernetes (K8s) objects

New in version 2.7.


Synopsis

  • Use the OpenShift Python client to perform read operations on K8s objects.
  • Access to the full range of K8s APIs.
  • Authenticate using either a config file, certificates, password or token.
  • Supports check mode.

Requirements

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

  • python >= 2.7
  • openshift >= 0.6
  • PyYAML >= 3.11

Parameters

Parameter Choices/Defaults Comments

api_key

string

Token used to authenticate with the API. Can also be specified via K8S_AUTH_API_KEY environment variable.

api_version

-

Default:

"v1"

Use to specify the API version. in conjunction with kind, name, and namespace to identify a specific object.


aliases: api, version

ca_cert

path

Path to a CA certificate used to authenticate with the API. The full certificate chain must be provided to avoid certificate validation errors. Can also be specified via K8S_AUTH_SSL_CA_CERT environment variable.


aliases: ssl_ca_cert

client_cert

path

Path to a certificate used to authenticate with the API. Can also be specified via K8S_AUTH_CERT_FILE environment variable.


aliases: cert_file

client_key

path

Path to a key file used to authenticate with the API. Can also be specified via K8S_AUTH_KEY_FILE environment variable.


aliases: key_file

context

string

The name of a context found in the config file. Can also be specified via K8S_AUTH_CONTEXT environment variable.

field_selectors

-

List of field selectors to use to filter results

host

string

Provide a URL for accessing the API. Can also be specified via K8S_AUTH_HOST environment variable.

kind

- / required

Use to specify an object model. Use in conjunction with api_version, name, and namespace to identify a specific object.

kubeconfig

path

Path to an existing Kubernetes config file. If not provided, and no other connection options are provided, the openshift client will attempt to load the default configuration file from ~/.kube/config.json. Can also be specified via K8S_AUTH_KUBECONFIG environment variable.

label_selectors

-

List of label selectors to use to filter results

name

-

Use to specify an object name. Use in conjunction with api_version, kind and namespace to identify a specific object.

namespace

-

Use to specify an object namespace. Use in conjunction with api_version, kind, and name to identify a specfic object.

password

string

Provide a password for authenticating with the API. Can also be specified via K8S_AUTH_PASSWORD environment variable.

Please read the description of the username option for a discussion of when this option is applicable.

username

string

Provide a username for authenticating with the API. Can also be specified via K8S_AUTH_USERNAME environment variable.

Please note that this only works with clusters configured to use HTTP Basic Auth. If your cluster has a different form of authentication (e.g. OAuth2 in OpenShift), this option will not work as expected and you should look into the k8s_auth module, as that might do what you need.

validate_certs

boolean

  • no
  • yes

Whether or not to verify the API server's SSL certificates. Can also be specified via K8S_AUTH_VERIFY_SSL environment variable.


aliases: verify_ssl



Notes

Note

  • The OpenShift Python client wraps the K8s Python client, providing full access to all of the APIS and models available on both platforms. For API version details and additional information visit https://github.com/openshift/openshift-restclient-python
  • To avoid SSL certificate validation errors when validate_certs is True, the full certificate chain for the API server must be provided via ca_cert or in the kubeconfig file.


Examples

- name: Get an existing Service object
  k8s_facts:
    api_version: v1
    kind: Service
    name: web
    namespace: testing
  register: web_service

- name: Get a list of all service objects
  k8s_facts:
    api_version: v1
    kind: Service
    namespace: testing
  register: service_list

- name: Get a list of all pods from any namespace
  k8s_facts:
    kind: Pod
  register: pod_list

- name: Search for all Pods labelled app=web
  k8s_facts:
    kind: Pod
    label_selectors:
      - app = web
      - tier in (dev, test)

- name: Search for all running pods
  k8s_facts:
    kind: Pod
    field_selectors:
      - status.phase = running

Return Values

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

Key Returned Description

resources

complex

success

The object(s) that exists


api_version

string

success

The versioned schema of this representation of an object.


kind

string

success

Represents the REST resource this object represents.


metadata

dictionary

success

Standard object metadata. Includes name, namespace, annotations, labels, etc.


spec

dictionary

success

Specific attributes of the object. Will vary based on the api_version and kind.


status

dictionary

success

Current status details for the object.





Status

Authors

  • Will Thames (@willthames)

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/2.8/modules/k8s_facts_module.html