kubernetes.core.k8s_cp module – Copy files and directories to and from pod.

Note

This module is part of the kubernetes.core collection (version 2.4.0).

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. You need further requirements to be able to use this module, see Requirements for details.

To use it in a playbook, specify: kubernetes.core.k8s_cp.

New in kubernetes.core 2.2.0

Synopsis

  • Use the Kubernetes Python client to copy files and directories to and from containers inside a pod.

Note

This module has a corresponding action plugin.

Requirements

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

  • python >= 3.6

  • kubernetes >= 12.0.0

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.

container

string

The name of the container in the pod to copy files/directories from/to.

Defaults to the only container if there is only one container in the pod.

content

string

When used instead of local_path, sets the contents of a local file directly to the specified value.

Works only when remote_path is a file. Creates the file if it does not exist.

For advanced formatting or if the content contains a variable, use the ansible.builtin.template module.

Mutually exclusive with local_path.

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.

impersonate_groups

list / elements=string

added in kubernetes.core 2.3.0

Group(s) to impersonate for the operation.

Can also be specified via K8S_AUTH_IMPERSONATE_GROUPS environment. Example: Group1,Group2

impersonate_user

string

added in kubernetes.core 2.3.0

Username to impersonate for the operation.

Can also be specified via K8S_AUTH_IMPERSONATE_USER environment.

kubeconfig

any

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 ~/.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.

local_path

path

Path of the local file or directory.

Required when state is set to from_pod.

Mutually exclusive with content.

namespace

string / required

The pod namespace name.

no_preserve

boolean

The copied file/directory’s ownership and permissions will not be preserved in the container.

This option is ignored when content is set or when state is set to from_pod.

Choices:

  • false ← (default)

  • true

no_proxy

string

added in kubernetes.core 2.3.0

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”

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:

  • false

  • true

pod

string / required

The pod name.

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).

proxy_headers

dictionary

added in kubernetes.core 2.0.0

The Header used for the HTTP proxy.

Documentation can be found here https://urllib3.readthedocs.io/en/latest/reference/urllib3.util.html?highlight=proxy_headers#urllib3.util.make_headers.

basic_auth

string

Colon-separated username:password for basic authentication header.

Can also be specified via K8S_AUTH_PROXY_HEADERS_BASIC_AUTH environment.

proxy_basic_auth

string

Colon-separated username:password for proxy basic authentication header.

Can also be specified via K8S_AUTH_PROXY_HEADERS_PROXY_BASIC_AUTH environment.

user_agent

string

String representing the user-agent you want, such as foo/1.0.

Can also be specified via K8S_AUTH_PROXY_HEADERS_USER_AGENT environment.

remote_path

path / required

Path of the file or directory to copy.

state

string

When set to to_pod, the local local_path file or directory will be copied to remote_path into the pod.

When set to from_pod, the remote file or directory remote_path from pod will be copied locally to local_path.

Choices:

  • "to_pod" ← (default)

  • "from_pod"

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 community.okd.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:

  • false

  • true

Notes

Note

  • the tar binary is required on the container when copying from local filesystem to pod.

  • 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

# kubectl cp /tmp/foo some-namespace/some-pod:/tmp/bar
- name: Copy /tmp/foo local file to /tmp/bar in a remote pod
  kubernetes.core.k8s_cp:
    namespace: some-namespace
    pod: some-pod
    remote_path: /tmp/bar
    local_path: /tmp/foo

# kubectl cp /tmp/foo_dir some-namespace/some-pod:/tmp/bar_dir
- name: Copy /tmp/foo_dir local directory to /tmp/bar_dir in a remote pod
  kubernetes.core.k8s_cp:
    namespace: some-namespace
    pod: some-pod
    remote_path: /tmp/bar_dir
    local_path: /tmp/foo_dir

# kubectl cp /tmp/foo some-namespace/some-pod:/tmp/bar -c some-container
- name: Copy /tmp/foo local file to /tmp/bar in a remote pod in a specific container
  kubernetes.core.k8s_cp:
    namespace: some-namespace
    pod: some-pod
    container: some-container
    remote_path: /tmp/bar
    local_path: /tmp/foo
    no_preserve: True
    state: to_pod

# kubectl cp some-namespace/some-pod:/tmp/foo /tmp/bar
- name: Copy /tmp/foo from a remote pod to /tmp/bar locally
  kubernetes.core.k8s_cp:
    namespace: some-namespace
    pod: some-pod
    remote_path: /tmp/foo
    local_path: /tmp/bar
    state: from_pod

# copy content into a file in the remote pod
- name: Copy content into a file in the remote pod
  kubernetes.core.k8s_cp:
    state: to_pod
    namespace: some-namespace
    pod: some-pod
    remote_path: /tmp/foo.txt
    content: "This content will be copied into remote file"

Return Values

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

Key

Description

result

string

message describing the copy operation successfully done.

Returned: success

Authors

  • Aubin Bikouo (@abikouo)