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Module utils default path (#20913)

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* Make the module_utils path configurable
* Add a config value to define the path site module_utils files
* Handle module_utils that do not have source as an error
* Make an integration test for module_utils envvar working
* Add documentation for the ANSIBLE_MODULE_UTILS config option/envvar
* Add it to the sample ansible.cfg
* Add it to intro_configuration.
* Also modify intro_configuration to place envvars on equal footing with
  the config options (will need to document the envvar names in the
  future)
* Also add the ANSIBLE_LIBRARY use case from
  https://github.com/ansible/ansible/issues/15432 so we can close out
  that bug.
This commit is contained in:
Toshio Kuratomi 2017-02-02 17:48:53 -08:00 • committed by GitHub
commit 1df7d95cec
22 changed files with 146 additions and 25 deletions
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79
docs/docsite/rst/intro_configuration.rst
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@ -52,8 +52,9 @@ You may wish to consult the `ansible.cfg in source control <https://raw.github.c
Environmental configuration
```````````````````````````
Ansible also allows configuration of settings via environment variables. If these environment variables are set, they will
override any setting loaded from the configuration file. These variables are for brevity not defined here, but look in `constants.py <https://github.com/ansible/ansible/blob/devel/lib/ansible/constants.py>`_ in the source tree if you want to use these. They are mostly considered to be a legacy system as compared to the config file, but are equally valid.
Ansible also allows configuration of settings via environment variables. If
these environment variables are set, they will override any setting loaded
from the configuration file. These variables are defined in `constants.py <https://github.com/ansible/ansible/blob/devel/lib/ansible/constants.py>`_.
.. _config_values_by_section:
@ -521,8 +522,25 @@ This is the default location Ansible looks to find modules::
library = /usr/share/ansible
Ansible knows how to look in multiple locations if you feed it a colon separated path, and it also will look for modules in the
"./library" directory alongside a playbook.
Ansible can look in multiple locations if you feed it a colon
separated path, and it also will look for modules in the :file:`./library`
directory alongside a playbook.
This can be used to manage modules pulled from several different locations.
For instance, a site wishing to checkout modules from several different git
repositories might handle it like this:
.. code-block:: shell-session
$ mkdir -p /srv/modules
$ cd /srv/modules
$ git checkout https://vendor_modules .
$ git checkout ssh://custom_modules .
$ export ANSIBLE_LIBRARY=/srv/modules/custom_modules:/srv/modules/vendor_modules
$ ansible [...]
In case of modules with the same name, the library paths are searched in order
and the first module found with that name is used.
.. _local_tmp:
@ -586,6 +604,31 @@ together. The same holds true for --skip-tags.
default value will be True. After 2.4, the option is going away.
Multiple --tags and multiple --skip-tags will always be merged together.
.. _module_lang:
module_lang
===========
This is to set the default language to communicate between the module and the system.
By default, the value is value `LANG` on the controller or, if unset, `en_US.UTF-8` (it used to be `C` in previous versions)::
module_lang = en_US.UTF-8
.. note::
This is only used if :ref:`module_set_locale` is set to True.
.. _module_name:
module_name
===========
This is the default module name (-m) value for /usr/bin/ansible. The default is the 'command' module.
Remember the command module doesn't support shell variables, pipes, or quotes, so you might wish to change
it to 'shell'::
module_name = command
.. _module_set_locale:
module_set_locale
@ -600,27 +643,23 @@ being set when the module is executed on the given remote system. By default th
The module_set_locale option was added in Ansible-2.1 and defaulted to
True. The default was changed to False in Ansible-2.2
.. _module_lang:
.. _module_utils:
module_utils
============
module_lang
===========
This is the default location Ansible looks to find module_utils::
This is to set the default language to communicate between the module and the system.
By default, the value is value `LANG` on the controller or, if unset, `en_US.UTF-8` (it used to be `C` in previous versions)::
module_utils = /usr/share/ansible/my_module_utils
module_lang = en_US.UTF-8
module_utils are python modules that Ansible is able to combine with Ansible
modules when sending them to the remote machine. Having custom module_utils
is useful for extracting common code when developing a set of site-specific
modules.
.. _module_name:
module_name
===========
This is the default module name (-m) value for /usr/bin/ansible. The default is the 'command' module.
Remember the command module doesn't support shell variables, pipes, or quotes, so you might wish to change
it to 'shell'::
module_name = command
Ansible can look in multiple locations if you feed it a colon
separated path, and it also will look for modules in the
:file:`./module_utils` directory alongside a playbook.
.. _nocolor: