community.kubernetes.k8s_cluster_info – Describe Kubernetes (K8s) cluster, APIs available and their respective versions

Note

This plugin is part of the community.kubernetes collection (version 1.2.1).

You might already have this collection installed if you are using the ansible package. It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install community.kubernetes.

To use it in a playbook, specify: community.kubernetes.k8s_cluster_info.

New in version 0.11.1: of community.kubernetes

Synopsis

  • Use the OpenShift Python client to perform read operations on K8s objects.

  • Authenticate using either a config file, certificates, password or token.

  • Supports check mode.

Note

This module has a corresponding action plugin.

Requirements

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

  • python >= 2.7

  • openshift >= 0.6

  • PyYAML >= 3.11

Parameters

Parameter

Comments

api_key

string

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

ca_cert

aliases: ssl_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.

client_cert

aliases: cert_file

path

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

client_key

aliases: key_file

path

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

context

string

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

host

string

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

invalidate_cache

boolean

Invalidate cache before retrieving information about cluster.

Choices:

  • no

  • yes ← (default)

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.

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.

persist_config

boolean

Whether or not to save the kube config refresh tokens. Can also be specified via K8S_AUTH_PERSIST_CONFIG environment variable.

When the k8s context is using a user credentials with refresh tokens (like oidc or gke/gcloud auth), the token is refreshed by the k8s python client library but not saved by default. So the old refresh token can expire and the next auth might fail. Setting this flag to true will tell the k8s python client to save the new refresh token to the kube config file.

Default to false.

Please note that the current version of the k8s python client library does not support setting this flag to True yet.

The fix for this k8s python library is here: https://github.com/kubernetes-client/python-base/pull/169

Choices:

  • no

  • yes

proxy

string

The URL of an HTTP proxy to use for the connection. Can also be specified via K8S_AUTH_PROXY environment variable.

Please note that this module does not pick up typical proxy settings from the environment (e.g. HTTP_PROXY).

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

aliases: verify_ssl

boolean

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

Choices:

  • no

  • yes

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 Cluster information
  community.kubernetes.k8s_cluster_info:
  register: api_status

- name: Do not invalidate cache before getting information
  community.kubernetes.k8s_cluster_info:
    invalidate_cache: False
  register: api_status

Return Values

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

Key

Description

apis

dictionary

The API(s) that exists in dictionary

Returned: success

api_version

string

API version

Returned: success

available_api_version

list / elements=string

All available versions of the given API

Returned: success

categories

list / elements=string

API categories

Returned: success

group_version

string

Resource Group version

Returned: success

kind

string

Resource kind

Returned: success

name

string

Resource short name

Returned: success

namespaced

boolean

If resource is namespaced

Returned: success

preferred

boolean

If resource version preferred

Returned: success

preferred_api_version

string

Preferred version of the given API

Returned: success

short_names

string

Resource short names

Returned: success

singular_name

string

Resource singular name

Returned: success

connection

dictionary

Connection information

Returned: success

cert_file

string

Path to client certificate.

Returned: success

host

string

Host URL

Returned: success

password

string

User password

Returned: success

proxy

string

Proxy details

Returned: success

ssl_ca_cert

string

Path to CA certificate

Returned: success

username

string

Username

Returned: success

verify_ssl

boolean

SSL verification status

Returned: success

version

dictionary

Information about server and client version

Returned: success

client

string

Client version

Returned: success

server

dictionary

Server version

Returned: success

Authors

  • Abhijeet Kasurde (@Akasurde)