101bacff26
This updates the mod_wsgi configuration and installation information to be more in line with current usage. It also makes the recommendation to use mod_wsgi more strongly than has been made in the past. In general we don't want people to be running ceilometer-api at all, but it is good for them to have the option. Also an effort has been made to clarify the difference between rpm and deb installations of Apache. DocImpact Change-Id: I11f92d91f4bdea884c266b91b52f9d012abd33b9 Partially-Implements: blueprint remove-web-eventlet
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2.3 KiB
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67 lines
2.3 KiB
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Copyright 2013 New Dream Network, LLC (DreamHost)
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Licensed under the Apache License, Version 2.0 (the "License"); you may
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not use this file except in compliance with the License. You may obtain
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a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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License for the specific language governing permissions and limitations
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under the License.
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===================================
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Installing the API behind mod_wsgi
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===================================
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Ceilometer comes with a few example files for configuring the API
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service to run behind Apache with ``mod_wsgi``.
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app.wsgi
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========
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The file ``ceilometer/api/app.wsgi`` sets up the V2 API WSGI
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application. The file is installed with the rest of the ceilometer
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application code, and should not need to be modified.
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etc/apache2/ceilometer
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======================
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The ``etc/apache2/ceilometer`` file contains example settings that
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work with a copy of ceilometer installed via devstack.
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.. literalinclude:: ../../../etc/apache2/ceilometer
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1. On deb-based systems copy or symlink the file to
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``/etc/apache2/sites-available``. For rpm-based systems the file will go in
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``/etc/httpd/conf.d``.
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2. Modify the ``WSGIDaemonProcess`` directive to set the ``user`` and
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``group`` values to a appropriate user on your server. In many
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installations ``ceilometer`` will be correct.
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3. Enable the ceilometer site. On deb-based systems::
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$ a2ensite ceilometer
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$ service apache2 reload
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On rpm-based systems::
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$ service httpd reload
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Limitation
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==========
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As Ceilometer is using Pecan and Pecan's DebugMiddleware doesn't support
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multiple processes, there is no way to set debug mode in the multiprocessing
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case. To allow multiple processes the DebugMiddleware may be turned off by
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setting ``pecan_debug`` to ``False`` in the ``api`` section of
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``ceilometer.conf``.
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For other WSGI setup you can refer to the `pecan deployment`_ documentation.
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.. _`pecan deployment`: http://pecan.readthedocs.org/en/latest/deployment.html#deployment
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