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=====================
oslo-config-validator
=====================

`oslo-config-validator` is a utility for verifying that the entries in a
config file are correct. It will report an error for any options found that
are not defined by the service, and a warning for any deprecated options found.

.. versionadded:: 6.5.0

Usage
-----

There are two primary ways to use the config validator. It can use the sample
config generator configuration file found in each service to determine the list
of available options, or it can consume a machine-readable sample config that
provides the same information.

Sample Config Generator Configuration
-------------------------------------

.. note:: When using this method, all dependencies of the service must be
          installed in the environment where the validator is run.

There are two parameters that must be passed to the validator in this case:
``--config-file`` and ``--input-file``.  ``--config-file`` should point at the
location of the sample config generator configuration file, while
``--input-file`` should point at the location of the configuration file to be
validated.

Here's an example of using the validator on Nova as installed by Devstack::

    $ oslo-config-validator --config-file /opt/stack/nova/etc/nova/nova-config-generator.conf --input-file /etc/nova/nova.conf
    ERROR:root:keystone_authtoken/user_domain_name not found
    ERROR:root:keystone_authtoken/password not found
    ERROR:root:keystone_authtoken/project_domain_name not found
    ERROR:root:keystone_authtoken/project_name not found
    ERROR:root:keystone_authtoken/username not found
    ERROR:root:keystone_authtoken/auth_url not found

Machine-Readable Sample Config
------------------------------

.. note:: For most accurate results, the machine-readable sample config should
          be generated from the same version of the code as is running on
          the system whose config file is being validated.

In this case, a machine-readable sample config must first be generated, as
described in :doc:`generator`.

This file is then passed to the validator with ``--opt-data``, along with the
config file to validated in ``--input-file`` as above.

Here's an example of using the validator on Nova as installed by Devstack, with
a sample config file ``config-data.yaml`` created by the config generator::

    $ oslo-config-validator --opt-data config-data.yaml --input-file /etc/nova/nova.conf
    ERROR:root:keystone_authtoken/username not found
    ERROR:root:keystone_authtoken/project_domain_name not found
    ERROR:root:keystone_authtoken/user_domain_name not found
    ERROR:root:keystone_authtoken/project_name not found
    ERROR:root:keystone_authtoken/password not found
    ERROR:root:keystone_authtoken/auth_url not found