9a39452a31
* add nuance to the definition of changed, add notes to modules that return "changed" without changing state
251 lines
7.7 KiB
ReStructuredText
251 lines
7.7 KiB
ReStructuredText
.. _common_return_values:
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Return Values
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-------------
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.. contents:: Topics
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Ansible modules normally return a data structure that can be registered into a variable, or seen directly when output by
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the `ansible` program. Each module can optionally document its own unique return values (visible through ansible-doc and on the :ref:`main docsite<ansible_documentation>`).
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This document covers return values common to all modules.
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.. note:: Some of these keys might be set by Ansible itself once it processes the module's return information.
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Common
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^^^^^^
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backup_file
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```````````
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For those modules that implement `backup=no|yes` when manipulating files, a path to the backup file created.
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.. code-block:: console
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"backup_file": "./foo.txt.32729.2020-07-30@06:24:19~"
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changed
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```````
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A boolean indicating if the task had to make changes to the target or delegated host.
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.. code-block:: console
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"changed": true
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diff
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````
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Information on differences between the previous and current state. Often a dictionary with entries ``before`` and ``after``, which will then be formatted by the callback plugin to a diff view.
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.. code-block:: console
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"diff": [
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{
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"after": "",
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"after_header": "foo.txt (content)",
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"before": "",
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"before_header": "foo.txt (content)"
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},
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{
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"after_header": "foo.txt (file attributes)",
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"before_header": "foo.txt (file attributes)"
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}
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failed
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``````
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A boolean that indicates if the task was failed or not.
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.. code-block:: console
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"failed": false
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invocation
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``````````
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Information on how the module was invoked.
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.. code-block:: console
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"invocation": {
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"module_args": {
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"_original_basename": "foo.txt",
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"attributes": null,
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"backup": true,
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"checksum": "da39a3ee5e6b4b0d3255bfef95601890afd80709",
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"content": null,
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"delimiter": null,
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"dest": "./foo.txt",
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"directory_mode": null,
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"follow": false,
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"force": true,
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"group": null,
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"local_follow": null,
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"mode": "666",
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"owner": null,
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"regexp": null,
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"remote_src": null,
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"selevel": null,
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"serole": null,
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"setype": null,
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"seuser": null,
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"src": "/Users/foo/.ansible/tmp/ansible-tmp-1596115458.110205-105717464505158/source",
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"unsafe_writes": null,
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"validate": null
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}
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msg
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```
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A string with a generic message relayed to the user.
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.. code-block:: console
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"msg": "line added"
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rc
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``
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Some modules execute command line utilities or are geared for executing commands directly (raw, shell, command, and so on), this field contains 'return code' of these utilities.
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.. code-block:: console
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"rc": 257
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results
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```````
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If this key exists, it indicates that a loop was present for the task and that it contains a list of the normal module 'result' per item.
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.. code-block:: console
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"results": [
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{
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"ansible_loop_var": "item",
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"backup": "foo.txt.83170.2020-07-30@07:03:05~",
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"changed": true,
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"diff": [
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{
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"after": "",
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"after_header": "foo.txt (content)",
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"before": "",
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"before_header": "foo.txt (content)"
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},
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{
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"after_header": "foo.txt (file attributes)",
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"before_header": "foo.txt (file attributes)"
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}
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],
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"failed": false,
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"invocation": {
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"module_args": {
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"attributes": null,
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"backrefs": false,
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"backup": true
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}
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},
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"item": "foo",
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"msg": "line added"
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},
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{
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"ansible_loop_var": "item",
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"backup": "foo.txt.83187.2020-07-30@07:03:05~",
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"changed": true,
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"diff": [
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{
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"after": "",
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"after_header": "foo.txt (content)",
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"before": "",
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"before_header": "foo.txt (content)"
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},
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{
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"after_header": "foo.txt (file attributes)",
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"before_header": "foo.txt (file attributes)"
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}
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],
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"failed": false,
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"invocation": {
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"module_args": {
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"attributes": null,
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"backrefs": false,
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"backup": true
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}
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},
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"item": "bar",
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"msg": "line added"
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}
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]
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skipped
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```````
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A boolean that indicates if the task was skipped or not
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.. code-block:: console
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"skipped": true
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stderr
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``````
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Some modules execute command line utilities or are geared for executing commands directly (raw, shell, command, and so on), this field contains the error output of these utilities.
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.. code-block:: console
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"stderr": "ls: foo: No such file or directory"
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stderr_lines
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````````````
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When `stderr` is returned we also always provide this field which is a list of strings, one item per line from the original.
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.. code-block:: console
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"stderr_lines": [
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"ls: doesntexist: No such file or directory"
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]
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stdout
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``````
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Some modules execute command line utilities or are geared for executing commands directly (raw, shell, command, and so on). This field contains the normal output of these utilities.
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.. code-block:: console
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"stdout": "foo!"
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stdout_lines
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````````````
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When `stdout` is returned, Ansible always provides a list of strings, each containing one item per line from the original output.
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.. code-block:: console
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"stdout_lines": [
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"foo!"
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]
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.. _internal_return_values:
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Internal use
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^^^^^^^^^^^^
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These keys can be added by modules but will be removed from registered variables; they are 'consumed' by Ansible itself.
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ansible_facts
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`````````````
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This key should contain a dictionary which will be appended to the facts assigned to the host. These will be directly accessible and don't require using a registered variable.
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exception
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`````````
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This key can contain traceback information caused by an exception in a module. It will only be displayed on high verbosity (-vvv).
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warnings
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````````
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This key contains a list of strings that will be presented to the user.
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deprecations
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````````````
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This key contains a list of dictionaries that will be presented to the user. Keys of the dictionaries are `msg` and `version`, values are string, value for the `version` key can be an empty string.
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.. seealso::
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:ref:`list_of_collections`
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Browse existing collections, modules, and plugins
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`GitHub modules directory <https://github.com/ansible/ansible/tree/devel/lib/ansible/modules>`_
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Browse source of core and extras modules
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`Mailing List <https://groups.google.com/group/ansible-devel>`_
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Development mailing list
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`irc.freenode.net <http://irc.freenode.net>`_
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#ansible IRC chat channel
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