kubernetes.core.k8s_info (3.0.1) — module

Describe Kubernetes (K8s) objects

Authors: Will Thames (@willthames)

This plugin has a corresponding action plugin.

Install collection

Install with ansible-galaxy collection install kubernetes.core:==3.0.1


Add to requirements.yml

  collections:
    - name: kubernetes.core
      version: 3.0.1

Description

Use the Kubernetes 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.

This module was called C(k8s_facts) before Ansible 2.9. The usage did not change.


Requirements

Usage examples

  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Get an existing Service object
  kubernetes.core.k8s_info:
    api_version: v1
    kind: Service
    name: web
    namespace: testing
  register: web_service
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Get a list of all service objects
  kubernetes.core.k8s_info:
    api_version: v1
    kind: Service
    namespace: testing
  register: service_list
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Get a list of all pods from any namespace
  kubernetes.core.k8s_info:
    kind: Pod
  register: pod_list
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Search for all Pods labelled app=web
  kubernetes.core.k8s_info:
    kind: Pod
    label_selectors:
      - app = web
      - tier in (dev, test)
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Using vars while using label_selectors
  kubernetes.core.k8s_info:
    kind: Pod
    label_selectors:
      - "app = {{ app_label_web }}"
  vars:
    app_label_web: web
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Search for all running pods
  kubernetes.core.k8s_info:
    kind: Pod
    field_selectors:
      - status.phase=Running
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: List custom objects created using CRD
  kubernetes.core.k8s_info:
    kind: MyCustomObject
    api_version: "stable.example.com/v1"
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Wait till the Object is created
  kubernetes.core.k8s_info:
    kind: Pod
    wait: yes
    name: pod-not-yet-created
    namespace: default
    wait_sleep: 10
    wait_timeout: 360

Inputs

    
host:
    description:
    - Provide a URL for accessing the API. Can also be specified via K8S_AUTH_HOST environment
      variable.
    type: str

kind:
    description:
    - Use to specify an object model.
    - Use to create, delete, or discover an object without providing a full resource definition.
    - Use in conjunction with I(api_version), I(name), and I(namespace) to identify a
      specific object.
    - If I(resource definition) is provided, the I(kind) value from the I(resource_definition)
      will override this option.
    required: true
    type: str

name:
    description:
    - Use to specify an object name.
    - Use to create, delete, or discover an object without providing a full resource definition.
    - Use in conjunction with I(api_version), I(kind) and I(namespace) to identify a specific
      object.
    - If I(resource definition) is provided, the I(metadata.name) value from the I(resource_definition)
      will override this option.
    type: str

wait:
    default: false
    description:
    - Whether to wait for certain resource kinds to end up in the desired state.
    - By default the module exits once Kubernetes has received the request.
    - Implemented for C(state=present) for C(Deployment), C(DaemonSet) and C(Pod), and
      for C(state=absent) for all resource kinds.
    - For resource kinds without an implementation, C(wait) returns immediately unless
      C(wait_condition) is set.
    type: bool

proxy:
    description:
    - 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).
    type: str

api_key:
    description:
    - Token used to authenticate with the API. Can also be specified via K8S_AUTH_API_KEY
      environment variable.
    type: str

ca_cert:
    aliases:
    - ssl_ca_cert
    description:
    - 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.
    type: path

context:
    description:
    - The name of a context found in the config file. Can also be specified via K8S_AUTH_CONTEXT
      environment variable.
    type: str

no_proxy:
    description:
    - The comma separated list of hosts/domains/IP/CIDR that shouldn't go through proxy.
      Can also be specified via K8S_AUTH_NO_PROXY environment variable.
    - Please note that this module does not pick up typical proxy settings from the environment
      (e.g. NO_PROXY).
    - This feature requires kubernetes>=19.15.0. When kubernetes library is less than
      19.15.0, it fails even no_proxy set in correct.
    - example value is "localhost,.local,.example.com,127.0.0.1,127.0.0.0/8,10.0.0.0/8,172.16.0.0/12,192.168.0.0/16"
    type: str
    version_added: 2.3.0
    version_added_collection: kubernetes.core

password:
    description:
    - Provide a password for authenticating with the API. Can also be specified via K8S_AUTH_PASSWORD
      environment variable.
    - Please read the description of the C(username) option for a discussion of when this
      option is applicable.
    type: str

username:
    description:
    - 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 M(community.okd.k8s_auth)
      module, as that might do what you need.
    type: str

namespace:
    description:
    - Use to specify an object namespace.
    - Useful when creating, deleting, or discovering an object without providing a full
      resource definition.
    - Use in conjunction with I(api_version), I(kind), and I(name) to identify a specific
      object.
    - If I(resource definition) is provided, the I(metadata.namespace) value from the
      I(resource_definition) will override this option.
    type: str

client_key:
    aliases:
    - key_file
    description:
    - Path to a key file used to authenticate with the API. Can also be specified via
      K8S_AUTH_KEY_FILE environment variable.
    type: path

kubeconfig:
    description:
    - Path to an existing Kubernetes config file. If not provided, and no other connection
      options are provided, the Kubernetes client will attempt to load the default configuration
      file from I(~/.kube/config). Can also be specified via K8S_AUTH_KUBECONFIG environment
      variable.
    - Multiple Kubernetes config file can be provided using separator ';' for Windows
      platform or ':' for others platforms.
    - The kubernetes configuration can be provided as dictionary. This feature requires
      a python kubernetes client version >= 17.17.0. Added in version 2.2.0.
    type: raw

wait_sleep:
    default: 5
    description:
    - Number of seconds to sleep between checks.
    type: int

api_version:
    aliases:
    - api
    - version
    default: v1
    description:
    - Use to specify the API version.
    - Use to create, delete, or discover an object without providing a full resource definition.
    - Use in conjunction with I(kind), I(name), and I(namespace) to identify a specific
      object.
    - If I(resource definition) is provided, the I(apiVersion) value from the I(resource_definition)
      will override this option.
    type: str

client_cert:
    aliases:
    - cert_file
    description:
    - Path to a certificate used to authenticate with the API. Can also be specified via
      K8S_AUTH_CERT_FILE environment variable.
    type: path

wait_timeout:
    default: 120
    description:
    - How long in seconds to wait for the resource to end up in the desired state.
    - Ignored if C(wait) is not set.
    type: int

hidden_fields:
    description:
    - Hide fields matching any of the field definitions in the result
    - An example might be C(hidden_fields=[metadata.managedFields])
    - Only field definitions that don't reference list items are supported (so V(spec.containers[0])
      would not work)
    elements: str
    type: list
    version_added: 2.5.0
    version_added_collection: kubernetes.core

proxy_headers:
    description:
    - The Header used for the HTTP proxy.
    - Documentation can be found here U(https://urllib3.readthedocs.io/en/latest/reference/urllib3.util.html?highlight=proxy_headers#urllib3.util.make_headers).
    suboptions:
      basic_auth:
        description:
        - Colon-separated username:password for basic authentication header.
        - Can also be specified via K8S_AUTH_PROXY_HEADERS_BASIC_AUTH environment.
        type: str
      proxy_basic_auth:
        description:
        - Colon-separated username:password for proxy basic authentication header.
        - Can also be specified via K8S_AUTH_PROXY_HEADERS_PROXY_BASIC_AUTH environment.
        type: str
      user_agent:
        description:
        - String representing the user-agent you want, such as foo/1.0.
        - Can also be specified via K8S_AUTH_PROXY_HEADERS_USER_AGENT environment.
        type: str
    type: dict
    version_added: 2.0.0
    version_added_collection: kubernetes.core

persist_config:
    description:
    - 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'
    type: bool

validate_certs:
    aliases:
    - verify_ssl
    description:
    - Whether or not to verify the API server's SSL certificates. Can also be specified
      via K8S_AUTH_VERIFY_SSL environment variable.
    type: bool

wait_condition:
    description:
    - Specifies a custom condition on the status to wait for.
    - Ignored if C(wait) is not set or is set to False.
    suboptions:
      reason:
        description:
        - The value of the reason field in your desired condition
        - For example, if a C(Deployment) is paused, The C(Progressing) C(type) will have
          the C(DeploymentPaused) reason.
        - The possible reasons in a condition are specific to each resource type in Kubernetes.
        - See the API documentation of the status field for a given resource to see possible
          choices.
        type: str
      status:
        choices:
        - 'True'
        - 'False'
        - Unknown
        default: 'True'
        description:
        - The value of the status field in your desired condition.
        - For example, if a C(Deployment) is paused, the C(Progressing) C(type) will have
          the C(Unknown) status.
        type: str
      type:
        description:
        - The type of condition to wait for.
        - For example, the C(Pod) resource will set the C(Ready) condition (among others).
        - Required if you are specifying a C(wait_condition).
        - If left empty, the C(wait_condition) field will be ignored.
        - The possible types for a condition are specific to each resource type in Kubernetes.
        - See the API documentation of the status field for a given resource to see possible
          choices.
        type: str
    type: dict

field_selectors:
    default: []
    description: List of field selectors to use to filter results
    elements: str
    type: list

label_selectors:
    default: []
    description: List of label selectors to use to filter results
    elements: str
    type: list

impersonate_user:
    description:
    - Username to impersonate for the operation.
    - Can also be specified via K8S_AUTH_IMPERSONATE_USER environment.
    type: str
    version_added: 2.3.0
    version_added_collection: kubernetes.core

impersonate_groups:
    description:
    - Group(s) to impersonate for the operation.
    - 'Can also be specified via K8S_AUTH_IMPERSONATE_GROUPS environment. Example: Group1,Group2'
    elements: str
    type: list
    version_added: 2.3.0
    version_added_collection: kubernetes.core

Outputs

api_found:
  description:
  - Whether the specified api_version and kind were successfully mapped to an existing
    API on the targeted cluster.
  - Version added 1.2.0.
  returned: always
  type: bool
resources:
  contains:
    api_version:
      description: The versioned schema of this representation of an object.
      returned: success
      type: str
    kind:
      description: Represents the REST resource this object represents.
      returned: success
      type: str
    metadata:
      description: Standard object metadata. Includes name, namespace, annotations,
        labels, etc.
      returned: success
      type: dict
    spec:
      description: Specific attributes of the object. Will vary based on the I(api_version)
        and I(kind).
      returned: success
      type: dict
    status:
      description: Current status details for the object.
      returned: success
      type: dict
  description:
  - The object(s) that exists
  returned: success
  type: complex