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

Note

This plugin is part of the kubernetes.core 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 kubernetes.core.

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

New in version 0.11.1: of kubernetes.core

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 Choices/Defaults Comments
api_key
string
Token used to authenticate with the API. Can also be specified via K8S_AUTH_API_KEY environment variable.
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.
host
string
Provide a URL for accessing the API. Can also be specified via K8S_AUTH_HOST environment variable.
invalidate_cache
boolean
    Choices:
  • no
  • yes ←
Invalidate cache before retrieving information about cluster.
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
    Choices:
  • no
  • yes
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
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
boolean
    Choices:
  • 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 Cluster information
  kubernetes.core.k8s_cluster_info:
  register: api_status

- name: Do not invalidate cache before getting information
  kubernetes.core.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 Returned Description
apis
dictionary
success
The API(s) that exists in dictionary
api_version
string
success
API version
available_api_version
list / elements=string
success
All available versions of the given API
categories
list / elements=string
success
API categories
group_version
string
success
Resource Group version
kind
string
success
Resource kind
name
string
success
Resource short name
namespaced
boolean
success
If resource is namespaced
preferred
boolean
success
If resource version preferred
preferred_api_version
string
success
Preferred version of the given API
short_names
string
success
Resource short names
singular_name
string
success
Resource singular name
connection
dictionary
success
Connection information
cert_file
string
success
Path to client certificate.
host
string
success
Host URL
password
string
success
User password
proxy
string
success
Proxy details
ssl_ca_cert
string
success
Path to CA certificate
username
string
success
Username
verify_ssl
boolean
success
SSL verification status
version
dictionary
success
Information about server and client version
client
string
success
Client version
server
dictionary
success
Server version


Authors

  • Abhijeet Kasurde (@Akasurde)

© 2012–2018 Michael DeHaan
© 2018–2021 Red Hat, Inc.
Licensed under the GNU General Public License version 3.
https://docs.ansible.com/ansible/latest/collections/kubernetes/core/k8s_cluster_info_module.html