Update the "admin/configuration" section of the documentation
This replaces the out-of-date "admin/configuration" section of the documentation with a step-by-step configuration guide. Change-Id: I2268ead54d0c0651c364bf790f1f17a16f28ab39 Story: 2004179 Task: 29063
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Luka Peschke
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###################
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Configuration Guide
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###################
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================================
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Step by step configuration guide
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================================
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Configure Cloudkitty
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====================
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Edit ``/etc/cloudkitty/cloudkitty.conf`` to configure cloudkitty.
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Edit :file:`/etc/cloudkitty/cloudkitty.conf` to configure cloudkitty.
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Common options
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--------------
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Then you need to know which keystone API version you use (which can be
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determined using ``openstack endpoint list``)
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The first thing to set is the authentication method wished to reach Cloudkitty
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API endpoints.
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Without authentication
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----------------------
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If wanted, you can choose to not set any authentication method.
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This should be set in the ``DEFAULT`` block of the configuration file owing to
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the ``auth_strategy`` field:
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Options supported by most OpenStack projects are also supported by cloudkitty:
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.. code-block:: ini
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[DEFAULT]
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verbose = True
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verbose = true
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debug = false
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log_dir = /var/log/cloudkitty
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# oslo_messaging_rabbit is deprecated
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transport_url = rabbit://RABBIT_USER:RABBIT_PASSWORD@RABBIT_HOST
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API authentication method
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-------------------------
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The authentication method is defined through the ``auth_strategy`` option in
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the ``[DEFAULT]`` section.
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Standalone mode
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+++++++++++++++
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If you're using CloudKitty in standalone mode, you'll have to use noauth:
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.. code-block:: ini
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[DEFAULT]
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auth_strategy = noauth
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Keystone integration
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++++++++++++++++++++
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Otherwise, the only other officially implemented authentication method is
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keystone. More methods will be implemented soon. It should be set in the
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``DEFAULT`` configuration block too, with the ``auth_stategy`` field.
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For keystone (identity) API v3
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------------------------------
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The following shows the basic configuration items:
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If you're using CloudKitty with OpenStack, you'll want to use Keystone
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authentication:
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.. code-block:: ini
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[DEFAULT]
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verbose = True
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log_dir = /var/log/cloudkitty
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# oslo_messaging_rabbit is deprecated
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transport_url = rabbit://RABBIT_USER:RABBIT_PASSWORD@RABBIT_HOST/
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auth_strategy = keystone
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When using Keystone, you'll have to provide the CloudKitty credentials for
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Keystone. These must be specified in the ``[keystone_authtoken]`` section.
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Since these credentials will be used in multiple places, it is convenient to
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use a common section:
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.. code-block:: ini
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[ks_auth]
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auth_type = v3password
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auth_protocol = http
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@ -61,178 +62,135 @@ The following shows the basic configuration items:
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project_name = service
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user_domain_name = default
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project_domain_name = default
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debug = True
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[keystone_authtoken]
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auth_section = ks_auth
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[database]
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connection = mysql+pymysql://CK_DBUSER:CK_DBPASSWORD@DB_HOST/cloudkitty
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.. note:: The ``service`` project may also be called ``services``.
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[fetcher_keystone]
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auth_section = ks_auth
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keystone_version = 3
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CloudKitty provides the ``rating`` OpenStack service.
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[tenant_fetcher]
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backend = keystone
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To integrate cloudkitty to Keystone, run the following commands (as OpenStack
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administrator):
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.. note::
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.. code-block:: shell
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The tenant named ``service`` is also commonly called ``services``
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openstack user create cloudkitty --password CK_PASSWORD
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It is now time to configure the storage backend. Two storage backends are
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available: ``sqlalchemy`` and ``hybrid`` (SQLalchemy being the recommended one).
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openstack role add --project service --user cloudkitty admin
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.. warning:: A v2 influxdb backend storage is also available. Its API is
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considered stable but its implementation may still evolve.
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openstack service create rating --name cloudkitty \
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--description "OpenStack Rating Service"
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.. code-block:: ini
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openstack endpoint create rating --region RegionOne \
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public http://localhost:8889
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[storage]
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backend = sqlalchemy
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version = 1
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openstack endpoint create rating --region RegionOne \
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admin http://localhost:8889
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As you will see in the following example, collector and storage backends
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sometimes need additional configuration sections. (The tenant fetcher works the
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same way). The section's name has the following format:
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``{backend_type}_{backend_name}`` (``collector_gnocchi`` for example).
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openstack endpoint create rating --region RegionOne \
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internal http://localhost:8889
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If you want to use the hybrid storage with a gnocchi backend, add the following
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entry:
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Storage
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-------
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.. code-block:: ini
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The next step is to configure the storage. Start with the SQL and create the
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``cloudkitty`` table and user:
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[storage_gnocchi]
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auth_section = ks_auth
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Two collectors are available: Gnocchi and Monasca. The Monasca collector
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collects metrics published by the Ceilometer agent to Monasca using Ceilosca_.
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The collect information, is separated from the Cloudkitty configuration file,
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in a yaml one.
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This allows Cloudkitty users to change metrology configuration,
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without modifying source code or Cloudkitty configuration file.
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.. code-block:: ini
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[collect]
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metrics_conf = /etc/cloudkitty/metrics.yml
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[collector_gnocchi]
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auth_section = ks_auth
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The ``/etc/cloudkitty/metrics.yml`` file looks like this:
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.. literalinclude:: ../../../../etc/cloudkitty/metrics.yml
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:language: yaml
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Conversion information is included in the yaml file.
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It allows operators to change metrics units for rating
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and so to not stay stuck with the original unit.
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The conversion information must be set for each metric.
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It includes optionals factor and offset,
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plus a mandatory final unit (used once the conversion is done).
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By default, factor and offset are 1 and 0 respectively.
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All type of linear conversions are so covered.
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The complete formula looks like:
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``new_value = (value * factor) + offset``
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Setup the database and storage backend
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--------------------------------------
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MySQL/MariaDB is the recommended database engine. To setup the database, use
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the ``mysql`` client::
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.. code-block:: shell
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mysql -uroot -p << EOF
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CREATE DATABASE cloudkitty;
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GRANT ALL PRIVILEGES ON cloudkitty.* TO 'CK_DBUSER'@'localhost' IDENTIFIED BY 'CK_DBPASSWORD';
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EOF
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If you need to authorize the mysql user associated to cloudkitty from another
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host you have to change the line accordingly.
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Specify the SQL credentials in the ``[database]`` section of the configuration
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file:
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Run the database synchronisation scripts::
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.. code-block:: ini
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cloudkitty-dbsync upgrade
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[database]
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connection = mysql+pymysql://CK_DBUSER:CK_DBPASSWORD@DB_HOST/cloudkitty
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Once you have set up the SQL database service, the storage backend for rated
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data can be configured. A complete configuration reference can be found in the
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`storage backend configuration guide`_. We'll use a v2 storage backend, which
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enables the v2 API. The storage version and driver to use must be specified in
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the ``[storage]`` section of the documentation:
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Init the storage backend::
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.. code-block:: ini
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cloudkitty-storage-init
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[storage]
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version = 2
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backend = influxdb
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Driver-specific options are then specified in the ``[storage_{drivername}]``
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section:
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Integration with Keystone
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-------------------------
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.. code-block:: ini
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cloudkitty uses Keystone for authentication, and provides a ``rating`` service.
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[storage_influxdb]
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username = cloudkitty
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password = cloudkitty
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database = cloudkitty
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host = influxdb
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To integrate cloudkitty to Keystone, run the following commands (as OpenStack
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administrator)::
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Once you have configured the SQL and rated data storage backends, initalize
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the storage::
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openstack user create cloudkitty --password CK_PASSWORD \
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--email cloudkitty@localhost
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openstack role add --project service --user cloudkitty admin
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cloudkitty-storage-init
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Give the ``rating`` role to ``cloudkitty`` for each project that should be
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handled by cloudkitty::
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Then, run the database migrations::
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openstack role create rating
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openstack role add --project XXX --user cloudkitty rating
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cloudkitty-dbsync upgrade
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Create the ``rating`` service and its endpoints::
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.. _storage backend configuration guide: ./storage.html
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openstack service create rating --name cloudkitty \
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--description "OpenStack Rating Service"
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openstack endpoint create rating --region RegionOne \
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public http://localhost:8889
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openstack endpoint create rating --region RegionOne \
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admin http://localhost:8889
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openstack endpoint create rating --region RegionOne \
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internal http://localhost:8889
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Fetcher
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-------
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.. note::
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The fetcher retrieves the list of scopes to rate, which will then be passed
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to the collector. A complete configuration reference can be found in the
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`fetcher configuration guide`_. For this example, we'll use the ``gnocchi``
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fetcher, which will discover scopes (in this case OpenStack projects) to rate.
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The fetcher to use is specified through the ``backend`` option of the
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``[fetcher]`` section:
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The default port for the API service changed from 8888 to 8889
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in the Newton release. If you installed Cloudkitty in an
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earlier version, make sure to either explicitly define the
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``[api]/port`` setting to 8888 in ``cloudkitty.conf``, or update
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your keystone endpoints to use the 8889 port.
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.. code-block:: ini
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Start cloudkitty
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================
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[fetcher]
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backend = gnocchi
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If you installed cloudkitty from packages
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-----------------------------------------
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Fetcher-specific options are then specified in the ``[fetcher_{fetchername}]``
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section:
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Start the processing services::
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.. code-block:: ini
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systemctl start cloudkitty-processor.service
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[fetcher_gnocchi]
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auth_section = ks_auth
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region_name = MyRegion
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If you installed cloudkitty from sources
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-----------------------------------------
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.. _fetcher configuration guide: ./fetcher.html
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Start the processing services::
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Collector
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---------
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cloudkitty-processor --config-file /etc/cloudkitty/cloudkitty.conf
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The collector will retrieve data for the scopes provided by the fetcher and
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pass them to the rating modules. The collector to use is specified in
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the ``[collect]`` section, and the collector-specific options are specified
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in the ``[collector_{collectorname}]`` section:
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Choose and start the API server
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-------------------------------
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.. code-block:: ini
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Cloudkitty includes the ``cloudkitty-api`` command. It can be
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used to run the API server. For smaller or proof-of-concept
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installations this is a reasonable choice. For larger installations it
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is strongly recommended to install the API server in a WSGI host
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such as mod_wsgi (see :ref:`mod_wsgi`). Doing so will provide better
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performance and more options for making adjustments specific to the
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installation environment.
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[collect]
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collector = gnocchi
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If you are using the ``cloudkitty-api`` command it can be started as::
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[collector_gnocchi]
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auth_section = ks_auth
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region_name = MyRegion
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$ cloudkitty-api -p 8889
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Note that you'll also have to configure what metrics the collector should
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collect, and how they should be collected. Have a look at the
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`collector configuration guide`_ for this:
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.. _Ceilosca: https://github.com/openstack/monasca-ceilometer
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.. _collector configuration guide: ./collector.html
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