600620a8d5
By default apache spawns only one process for the wsgi app if not specified. This patch detects the number of CPUS to configure n CPUs +1 processes by default and allows to specify the number of processes explicitly. Change-Id: I684ecd15193cef169d7a86f66a47b7d1d76c1c24 Closes-Bug: #1658048
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4.8 KiB
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126 lines
4.8 KiB
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==================
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Installing Horizon
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==================
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This page covers the basic installation of horizon, the OpenStack dashboard.
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.. _system-requirements-label:
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System Requirements
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===================
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* Python 2.7
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* Django 1.7 or 1.8
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* Minimum required set of running OpenStack services are:
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* nova: OpenStack Compute
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* keystone: OpenStack Identity
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* glance: OpenStack Image service
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* neutron: OpenStack Networking (unless nova-network is used)
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* All other services are optional.
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Horizon supports the following services in the Juno release.
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If the keystone endpoint for a service is configured,
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horizon detects it and enables its support automatically.
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* swift: OpenStack Object Storage
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* cinder: OpenStack Block Storage
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* heat: Orchestration
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* ceilometer: Telemetry
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* trove: Database service for OpenStack
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* sahara: Data processing service for OpenStack
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Installation
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============
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1. Compile translation message catalogs for internationalization.
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This step is not required if you do not need to support languages
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other than English. GNU ``gettext`` tool is required to compile
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message catalogs::
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$ sudo apt-get install gettext
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$ tox -e manage -- compilemessages
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This command compiles translation message catalogs within Python
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virtualenv named ``.venv``. After this step, you can remove
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``.venv`` directory safely.
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2. Install the horizon python module into your system. Run the following
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in the top directory::
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$ sudo pip install -c http://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt?h=stable/<release> .
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Where "<release>" is the release you are installing (eg. "newton",
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"ocata", ...)
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3. Create ``openstack_dashboard/local/local_settings.py``.
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It is usually a good idea to copy
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``openstack_dashboard/local/local_settings.py.example`` and edit it.
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At least we need to customize the following variables in this file.
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* ``ALLOWED_HOSTS`` (unless ``DEBUG`` is ``True``)
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* ``OPENSTACK_KEYSTONE_URL``
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For more details, please refer to :doc:`deployment` and :doc:`settings`.
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4. Optional: Django has a compressor feature that performs many enhancements
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for the delivery of static files, including standardization and
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minification/uglification. This processing can be run either online or
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offline (pre-processed). Letting the compression process occur at runtime
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will incur processing and memory use when the resources are first requested;
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doing it ahead of time removes those runtime penalties.
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If you want the static files to be processed before server runtime, you'll
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need to configure your local_settings.py to specify
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``COMPRESS_OFFLINE = True``, then run the following commands::
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$ ./manage.py collectstatic
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$ ./manage.py compress
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5. Set up a web server with WSGI support.
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It is optional but recommended in production deployments.
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For example, install Apache web server on Ubuntu::
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$ sudo apt-get install apache2 libapache2-mod-wsgi
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You will either use the provided ``openstack_dashboard/wsgi/django.wsgi`` or
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generate an ``openstack_dashboard/wsgi/horizon.wsgi`` file with the
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following command (which detects if you use a virtual environment or not to
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automatically build an adapted wsgi file)::
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$ ./manage.py make_web_conf --wsgi
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Then configure the web server to host OpenStack dashboard via WSGI.
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For apache2 web server, you may need to create
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``/etc/apache2/sites-available/horizon.conf``.
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The template in devstack is a good example of the file.
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http://git.openstack.org/cgit/openstack-dev/devstack/tree/files/apache-horizon.template
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Or, if you previously generated an ``openstack_dashboard/wsgi/horizon.wsgi``
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you can automatically generate an apache configuration file::
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$ ./manage.py make_web_conf --apache > /etc/apache2/sites-available/horizon.conf
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Same as above but if you want ssl support::
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$ ./manage.py make_web_conf --apache --ssl --sslkey=/path/to/ssl/key --sslcert=/path/to/ssl/cert > /etc/apache2/sites-available/horizon.conf
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By default the apache configuration will launch a number of apache processes
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equal to the number of CPUs + 1 of the machine on which you launch the
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make_web_conf command. If the target machine is not the same or if you want
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to specify the number of processes, add the --processes option::
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$ ./manage.py make_web_conf --apache --processes 10 > /etc/apache2/sites-available/horizon.conf
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6. Finally, enable the above configuration and restart the web server::
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$ sudo a2ensite horizon
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$ sudo service apache2 restart
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Next Steps
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==========
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* :doc:`deployment` covers some common questions, concerns and pitfalls you
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may encounter when deploying horizon in a production environment.
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* :doc:`settings` lists the available settings for horizon.
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* :doc:`customizing` describes how to customizing horizon as you want.
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