kubernetes.core.k8s_taint (3.0.1) — module

Taint a node in a Kubernetes/OpenShift cluster

| "added in version" 2.3.0 of kubernetes.core"

Authors: Alina Buzachis (@alinabuzachis)

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

Taint allows a node to refuse Pod to be scheduled unless that Pod has a matching toleration.

Untaint will remove taints from nodes as needed.


Requirements

Usage examples

  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Taint node "foo"
  kubernetes.core.k8s_taint:
    state: present
    name: foo
    taints:
    - effect: NoExecute
      key: "key1"
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Taint node "foo"
  kubernetes.core.k8s_taint:
    state: present
    name: foo
    taints:
    - effect: NoExecute
      key: "key1"
      value: "value1"
    - effect: NoSchedule
      key: "key1"
      value: "value1"
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Remove taint from "foo".
  kubernetes.core.k8s_taint:
    state: absent
    name: foo
    taints:
    - effect: NoExecute
      key: "key1"
      value: "value1"

Inputs

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

name:
    description:
    - The name of the node.
    required: true
    type: str

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

state:
    choices:
    - present
    - absent
    default: present
    description:
    - Determines whether to add or remove taints.
    type: str

taints:
    description:
    - List containing the taints.
    elements: dict
    required: true
    suboptions:
      effect:
        choices:
        - NoSchedule
        - NoExecute
        - PreferNoSchedule
        description:
        - The effect of the taint on Pods that do not tolerate the taint.
        - Required when I(state=present).
        type: str
      key:
        description:
        - The taint key to be applied to a node.
        type: str
      value:
        description:
        - The taint value corresponding to the taint key.
        type: str
    type: list

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

replace:
    default: false
    description:
    - If C(true), allow taints to be replaced.
    required: false
    type: bool

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

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

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

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

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

result:
  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: complex
    spec:
      description: Specific attributes of the object. Will vary based on the I(api_version)
        and I(kind).
      returned: success
      type: complex
    status:
      description: Current status details for the object.
      returned: success
      type: complex
  description:
  - The tainted Node object. Will be empty in the case of a deletion.
  returned: success
  type: complex