2fa1ed0da1
This patch implements a new notification strategy that sends notifications to a message queue via Qpid. Change-Id: Ie2640139dcf735e428af63e9e87b3667a2b22eb5
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Copyright 2011 OpenStack, LLC
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All Rights Reserved.
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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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Configuring Glance
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==================
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Glance has a number of options that you can use to configure the Glance API
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server, the Glance Registry server, and the various storage backends that
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Glance can use to store images.
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Most configuration is done via configuration files, with the Glance API
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server and Glance Registry server using separate configuration files.
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When starting up a Glance server, you can specify the configuration file to
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use (see `the documentation on controller Glance servers <controllingservers>`_).
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If you do **not** specify a configuration file, Glance will look in the following
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directories for a configuration file, in order:
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* ``~/.glance``
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* ``~/``
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* ``/etc/glance``
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* ``/etc``
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The Glance API server configuration file should be named ``glance-api.conf``.
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Similarly, the Glance Registry server configuration file should be named
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``glance-registry.conf``. If you installed Glance via your operating system's
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package management system, it is likely that you will have sample
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configuration files installed in ``/etc/glance``.
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In addition to this documentation page, you can check the
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``etc/glance-api.conf`` and ``etc/glance-registry.conf`` sample configuration
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files distributed with Glance for example configuration files for each server
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application with detailed comments on what each options does.
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The PasteDeploy configuration (controlling the deployment of the WSGI
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application for each component) may be found by default in
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<component>-paste.ini alongside the main configuration file, <component>.conf.
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For example, ``glance-api-paste.ini`` corresponds to ``glance-api.conf``.
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This pathname for the paste config is configurable, as follows:
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[paste_deploy]
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config_file = /path/to/paste/config
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Common Configuration Options in Glance
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--------------------------------------
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Glance has a few command-line options that are common to all Glance programs:
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* ``--verbose``
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Optional. Default: ``False``
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Can be specified on the command line and in configuration files.
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Turns on the INFO level in logging and prints more verbose command-line
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interface printouts.
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* ``--debug``
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Optional. Default: ``False``
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Can be specified on the command line and in configuration files.
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Turns on the DEBUG level in logging.
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* ``--config-file=PATH``
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Optional. Default: ``None``
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Specified on the command line only.
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Takes a path to a configuration file to use when running the program. If this
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CLI option is not specified, then we check to see if the first argument is a
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file. If it is, then we try to use that as the configuration file. If there is
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no file or there were no arguments, we search for a configuration file in the
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following order:
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* ``~/.glance``
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* ``~/``
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* ``/etc/glance``
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* ``/etc``
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The filename that is searched for depends on the server application name. So,
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if you are starting up the API server, ``glance-api.conf`` is searched for,
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otherwise ``glance-registry.conf``.
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Configuring Server Startup Options
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----------------------------------
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You can put the following options in the ``glance-api.conf`` and
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``glance-registry.conf`` files, under the ``[DEFAULT]`` section. They enable
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startup and binding behaviour for the API and registry servers, respectively.
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* ``bind_host=ADDRESS``
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The address of the host to bind to.
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Optional. Default: ``0.0.0.0``
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* ``bind_port=PORT``
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The port the server should bind to.
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Optional. Default: ``9191`` for the registry server, ``9292`` for the API server
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* ``backlog=REQUESTS``
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Number of backlog requests to configure the socket with.
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Optional. Default: ``4096``
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* ``workers=PROCESSES``
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Number of Glance API worker processes to start. Each worker
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process will listen on the same port. Increasing this
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value may increase performance (especially if using SSL
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with compression enabled). Typically it is recommended
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to have one worker process per CPU. The value `0` will
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prevent any new processes from being created.
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Optional. Default: ``0``
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Configurating SSL Support
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~~~~~~~~~~~~~~~~~~~~~~~~~
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* ``cert_file=PATH``
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Path to the the certificate file the server should use when binding to an
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SSL-wrapped socket.
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Optional. Default: not enabled.
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* ``key_file=PATH``
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Path to the the private key file the server should use when binding to an
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SSL-wrapped socket.
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Optional. Default: not enabled.
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* ``registry_client_protocol=PROTOCOL``
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If you run a secure Registry server, you need to set this value to ``https``
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and also set ``registry_client_key_file`` and optionally
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``registry_client_cert_file``.
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Optional. Default: http
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* ``registry_client_key_file=PATH``
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The path to the key file to use in SSL connections to the
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registry server, if any. Alternately, you may set the
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``GLANCE_CLIENT_KEY_FILE`` environ variable to a filepath of the key file
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Optional. Default: Not set.
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* ``registry_client_cert_file=PATH``
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Optional. Default: Not set.
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The path to the cert file to use in SSL connections to the
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registry server, if any. Alternately, you may set the
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``GLANCE_CLIENT_CERT_FILE`` environ variable to a filepath of the cert file
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* ``registry_client_ca_file=PATH``
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Optional. Default: Not set.
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The path to a Certifying Authority's cert file to use in SSL connections to the
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registry server, if any. Alternately, you may set the
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``GLANCE_CLIENT_CA_FILE`` environ variable to a filepath of the CA cert file
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Configuring Logging in Glance
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-----------------------------
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There are a number of configuration options in Glance that control how Glance
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servers log messages.
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* ``--log-config=PATH``
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Optional. Default: ``None``
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Specified on the command line only.
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Takes a path to a configuration file to use for configuring logging.
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Logging Options Available Only in Configuration Files
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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You will want to place the different logging options in the **[DEFAULT]** section
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in your application configuration file. As an example, you might do the following
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for the API server, in a configuration file called ``etc/glance-api.conf``::
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[DEFAULT]
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log_file = /var/log/glance/api.log
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* ``log_file``
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The filepath of the file to use for logging messages from Glance's servers. If
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missing, the default is to output messages to ``stdout``, so if you are running
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Glance servers in a daemon mode (using ``glance-control``) you should make
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sure that the ``log_file`` option is set appropriately.
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* ``log_dir``
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The filepath of the directory to use for log files. If not specified (the default)
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the ``log_file`` is used as an absolute filepath.
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* ``log_date_format``
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The format string for timestamps in the log output.
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Defaults to ``%Y-%m-%d %H:%M:%S``. See the
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`logging module <http://docs.python.org/library/logging.html>`_ documentation for
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more information on setting this format string.
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* ``log_use_syslog``
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Use syslog logging functionality.
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Defaults to False.
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Configuring Glance Storage Backends
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-----------------------------------
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There are a number of configuration options in Glance that control how Glance
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stores disk images. These configuration options are specified in the
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``glance-api.conf`` config file in the section ``[DEFAULT]``.
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* ``default_store=STORE``
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Optional. Default: ``file``
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Can only be specified in configuration files.
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Sets the storage backend to use by default when storing images in Glance.
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Available options for this option are (``file``, ``swift``, ``s3``, or ``rbd``).
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Configuring the Filesystem Storage Backend
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ``filesystem_store_datadir=PATH``
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Optional. Default: ``/var/lib/glance/images/``
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Can only be specified in configuration files.
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`This option is specific to the filesystem storage backend.`
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Sets the path where the filesystem storage backend write disk images. Note that
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the filesystem storage backend will attempt to create this directory if it does
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not exist. Ensure that the user that ``glance-api`` runs under has write
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permissions to this directory.
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Configuring the Swift Storage Backend
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ``swift_store_auth_address=URL``
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Required when using the Swift storage backend.
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Can only be specified in configuration files.
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`This option is specific to the Swift storage backend.`
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Sets the authentication URL supplied to Swift when making calls to its storage
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system. For more information about the Swift authentication system, please
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see the `Swift auth <http://swift.openstack.org/overview_auth.html>`_
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documentation and the
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`overview of Swift authentication <http://docs.openstack.org/openstack-object-storage/admin/content/ch02s02.html>`_.
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**IMPORTANT NOTE**: Swift authentication addresses use HTTPS by default. This
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means that if you are running Swift with authentication over HTTP, you need
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to set your ``swift_store_auth_address`` to the full URL, including the ``http://``.
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* ``swift_store_user=USER``
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Required when using the Swift storage backend.
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Can only be specified in configuration files.
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`This option is specific to the Swift storage backend.`
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Sets the user to authenticate against the ``swift_store_auth_address`` with.
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* ``swift_store_key=KEY``
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Required when using the Swift storage backend.
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Can only be specified in configuration files.
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`This option is specific to the Swift storage backend.`
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Sets the authentication key to authenticate against the
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``swift_store_auth_address`` with for the user ``swift_store_user``.
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* ``swift_store_container=CONTAINER``
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Optional. Default: ``glance``
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Can only be specified in configuration files.
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`This option is specific to the Swift storage backend.`
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Sets the name of the container to use for Glance images in Swift.
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* ``swift_store_create_container_on_put``
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Optional. Default: ``False``
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Can only be specified in configuration files.
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`This option is specific to the Swift storage backend.`
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If true, Glance will attempt to create the container ``swift_store_container``
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if it does not exist.
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* ``swift_store_large_object_size=SIZE_IN_MB``
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Optional. Default: ``5120``
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Can only be specified in configuration files.
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`This option is specific to the Swift storage backend.`
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What size, in MB, should Glance start chunking image files
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and do a large object manifest in Swift? By default, this is
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the maximum object size in Swift, which is 5GB
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* ``swift_store_large_object_chunk_size=SIZE_IN_MB``
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Optional. Default: ``200``
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Can only be specified in configuration files.
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`This option is specific to the Swift storage backend.`
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When doing a large object manifest, what size, in MB, should
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Glance write chunks to Swift? The default is 200MB.
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Configuring the S3 Storage Backend
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ``s3_store_host=URL``
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Required when using the S3 storage backend.
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Can only be specified in configuration files.
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`This option is specific to the S3 storage backend.`
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Default: s3.amazonaws.com
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Sets the main service URL supplied to S3 when making calls to its storage
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system. For more information about the S3 authentication system, please
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see the `S3 documentation <http://aws.amazon.com/documentation/s3/>`_
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* ``s3_store_access_key=ACCESS_KEY``
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Required when using the S3 storage backend.
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Can only be specified in configuration files.
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`This option is specific to the S3 storage backend.`
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Sets the access key to authenticate against the ``s3_store_host`` with.
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You should set this to your 20-character Amazon AWS access key.
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* ``s3_store_secret_key=SECRET_KEY``
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Required when using the S3 storage backend.
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Can only be specified in configuration files.
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`This option is specific to the S3 storage backend.`
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Sets the secret key to authenticate against the
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``s3_store_host`` with for the access key ``s3_store_access_key``.
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You should set this to your 40-character Amazon AWS secret key.
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* ``s3_store_bucket=BUCKET``
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Required when using the S3 storage backend.
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Can only be specified in configuration files.
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`This option is specific to the S3 storage backend.`
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Sets the name of the bucket to use for Glance images in S3.
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Note that the namespace for S3 buckets is **global**, and
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therefore you must use a name for the bucket that is unique. It
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is recommended that you use a combination of your AWS access key,
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**lowercased** with "glance".
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For instance if your Amazon AWS access key is:
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``ABCDEFGHIJKLMNOPQRST``
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then make your bucket value be:
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``abcdefghijklmnopqrstglance``
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* ``s3_store_create_bucket_on_put``
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Optional. Default: ``False``
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Can only be specified in configuration files.
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`This option is specific to the S3 storage backend.`
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If true, Glance will attempt to create the bucket ``s3_store_bucket``
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if it does not exist.
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* ``s3_store_object_buffer_dir=PATH``
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Optional. Default: ``the platform's default temporary directory``
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Can only be specified in configuration files.
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`This option is specific to the S3 storage backend.`
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When sending images to S3, what directory should be
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used to buffer the chunks? By default the platform's
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temporary directory will be used.
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Configuring the RBD Storage Backend
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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**Note**: the RBD storage backend requires the python bindings for
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librados and librbd. These are in the python-ceph package on
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Debian-based distributions.
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* ``rbd_store_pool=POOL``
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Optional. Default: ``rbd``
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Can only be specified in configuration files.
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`This option is specific to the RBD storage backend.`
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Sets the RADOS pool in which images are stored.
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* ``rbd_store_chunk_size=CHUNK_SIZE_MB``
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Optional. Default: ``4``
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Can only be specified in configuration files.
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`This option is specific to the RBD storage backend.`
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Images will be chunked into objects of this size (in megabytes).
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For best performance, this should be a power of two.
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* ``rbd_store_ceph_conf=PATH``
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Optional. Default: ``/etc/ceph/ceph.conf``, ``~/.ceph/config``, and ``./ceph.conf``
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Can only be specified in configuration files.
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`This option is specific to the RBD storage backend.`
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Sets the Ceph configuration file to use.
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* ``rbd_store_user=NAME``
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Optional. Default: ``admin``
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Can only be specified in configuration files.
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`This option is specific to the RBD storage backend.`
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Sets the RADOS user to authenticate as. This is only needed
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when `RADOS authentication <http://ceph.newdream.net/wiki/Cephx>`_
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is `enabled. <http://ceph.newdream.net/wiki/Cluster_configuration#Cephx_auth>`_
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A keyring must be set for this user in the Ceph
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configuration file, e.g. with a user ``glance``::
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[client.glance]
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keyring=/etc/glance/rbd.keyring
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To set up a user named ``glance`` with minimal permissions, using a pool called
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``images``, run::
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rados mkpool images
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ceph-authtool --create-keyring /etc/glance/rbd.keyring
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ceph-authtool --gen-key --name client.glance --cap mon 'allow r' --cap osd 'allow rwx pool=images' /etc/glance/rbd.keyring
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ceph auth add client.glance -i /etc/glance/rbd.keyring
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Configuring the Image Cache
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---------------------------
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Glance API servers can be configured to have a local image cache. Caching of
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image files is transparent and happens using a piece of middleware that can
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optionally be placed in the server application pipeline.
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This pipeline is configured in the PasteDeploy configuration file,
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<component>-paste.ini. You should not generally have to edit this file
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directly, as it ships with ready-made pipelines for all common deployment
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flavors.
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Enabling the Image Cache Middleware
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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To enable the image cache middleware, the cache middleware must occur in
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the application pipeline **after** the appropriate context middleware.
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The cache middleware should be in your ``glance-api-paste.ini`` in a section
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titled ``[filter:cache]``. It should look like this::
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[filter:cache]
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paste.filter_factory = glance.common.wsgi:filter_factory
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glance.filter_factory = glance.api.middleware.cache:CacheFilter
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A ready-made application pipeline including this filter is defined in
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the ``glance-api-paste.ini`` file, looking like so::
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[pipeline:glance-api-caching]
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pipeline = versionnegotiation context cache apiv1app
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To enable the above application pipeline, in your main ``glance-api.conf``
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configuration file, select the appropriate deployment flavor like so::
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[paste_deploy]
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flavor = caching
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And that would give you a transparent image cache on the API server.
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Configuration Options Affecting the Image Cache
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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One main configuration file option affects the image cache.
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* ``image_cache_dir=PATH``
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Required when image cache middleware is enabled.
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Default: ``/var/lib/glance/image-cache``
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This is the base directory the image cache can write files to.
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Make sure the directory is writeable by the user running the
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``glance-api`` server
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* ``image_cache_driver=DRIVER``
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Optional. Choice of ``sqlite`` or ``xattr``
|
|
|
|
Default: ``sqlite``
|
|
|
|
The default ``sqlite`` cache driver has no special dependencies, other
|
|
than the ``python-sqlite3`` library, which is installed on virtually
|
|
all operating systems with modern versions of Python. It stores
|
|
information about the cached files in a SQLite database.
|
|
|
|
The ``xattr`` cache driver required the ``python-xattr>=0.6.0`` library
|
|
and requires that the filesystem containing ``image_cache_dir`` have
|
|
access times tracked for all files (in other words, the noatime option
|
|
CANNOT be set for that filesystem). In addition, ``user_xattr`` must be
|
|
set on the filesystem's description line in fstab. Because of these
|
|
requirements, the ``xattr`` cache driver is not available on Windows.
|
|
|
|
* ``image_cache_sqlite_db=DB_FILE``
|
|
|
|
Optional.
|
|
|
|
Default: ``cache.db``
|
|
|
|
When using the ``sqlite`` cache driver, you can set the name of the database
|
|
that will be used to store the cached images information. The database
|
|
is always contained in the ``image_cache_dir``.
|
|
|
|
* ``image_cache_max_size=SIZE``
|
|
|
|
Optional.
|
|
|
|
Default: ``10737418240`` (10 GB)
|
|
|
|
Size, in bytes, that the image cache should be constrained to. Images files
|
|
are cached automatically in the local image cache, even if the writing of that
|
|
image file would put the total cache size over this size. The
|
|
``glance-cache-pruner`` executable is what prunes the image cache to be equal
|
|
to or less than this value. The ``glance-cache-pruner`` executable is designed
|
|
to be run via cron on a regular basis. See more about this executable in
|
|
`Controlling the Growth of the Image Cache`
|
|
|
|
Configuring the Glance Registry
|
|
-------------------------------
|
|
|
|
Glance ships with a default, reference implementation registry server. There
|
|
are a number of configuration options in Glance that control how this registry
|
|
server operates. These configuration options are specified in the
|
|
``glance-registry.conf`` config file in the section ``[DEFAULT]``.
|
|
|
|
* ``sql_connection=CONNECTION_STRING`` (``--sql-connection`` when specified
|
|
on command line)
|
|
|
|
Optional. Default: ``None``
|
|
|
|
Can be specified in configuration files. Can also be specified on the
|
|
command-line for the ``glance-manage`` program.
|
|
|
|
Sets the SQLAlchemy connection string to use when connecting to the registry
|
|
database. Please see the documentation for
|
|
`SQLAlchemy connection strings <http://www.sqlalchemy.org/docs/05/reference/sqlalchemy/connections.html>`_
|
|
online.
|
|
|
|
* ``sql_timeout=SECONDS``
|
|
on command line)
|
|
|
|
Optional. Default: ``3600``
|
|
|
|
Can only be specified in configuration files.
|
|
|
|
Sets the number of seconds after which SQLAlchemy should reconnect to the
|
|
datastore if no activity has been made on the connection.
|
|
|
|
Configuring Notifications
|
|
-------------------------
|
|
|
|
Glance can optionally generate notifications to be logged or sent to
|
|
a RabbitMQ queue. The configuration options are specified in the
|
|
``glance-api.conf`` config file in the section ``[DEFAULT]``.
|
|
|
|
* ``notifier_strategy``
|
|
|
|
Optional. Default: ``noop``
|
|
|
|
Sets the strategy used for notifications. Options are ``logging``,
|
|
``rabbit``, ``qpid`` and ``noop``.
|
|
For more information :doc:`Glance notifications <notifications>`
|
|
|
|
* ``rabbit_host``
|
|
|
|
Optional. Default: ``localhost``
|
|
|
|
Host to connect to when using ``rabbit`` strategy.
|
|
|
|
* ``rabbit_port``
|
|
|
|
Optional. Default: ``5672``
|
|
|
|
Port to connect to when using ``rabbit`` strategy.
|
|
|
|
* ``rabbit_use_ssl``
|
|
|
|
Optional. Default: ``false``
|
|
|
|
Boolean to use SSL for connecting when using ``rabbit`` strategy.
|
|
|
|
* ``rabbit_userid``
|
|
|
|
Optional. Default: ``guest``
|
|
|
|
Userid to use for connection when using ``rabbit`` strategy.
|
|
|
|
* ``rabbit_password``
|
|
|
|
Optional. Default: ``guest``
|
|
|
|
Password to use for connection when using ``rabbit`` strategy.
|
|
|
|
* ``rabbit_virtual_host``
|
|
|
|
Optional. Default: ``/``
|
|
|
|
Virtual host to use for connection when using ``rabbit`` strategy.
|
|
|
|
* ``rabbit_notification_exchange``
|
|
|
|
Optional. Default: ``glance``
|
|
|
|
Exchange name to use for connection when using ``rabbit`` strategy.
|
|
|
|
* ``rabbit_notification_topic``
|
|
|
|
Optional. Default: ``glance_notifications``
|
|
|
|
Topic to use for connection when using ``rabbit`` strategy.
|
|
|
|
* ``rabbit_max_retries``
|
|
|
|
Optional. Default: ``0``
|
|
|
|
Number of retries on communication failures when using ``rabbit`` strategy.
|
|
A value of 0 means to retry forever.
|
|
|
|
* ``rabbit_retry_backoff``
|
|
|
|
Optional. Default: ``2``
|
|
|
|
Number of seconds to wait before reconnecting on failures when using
|
|
``rabbit`` strategy.
|
|
|
|
* ``rabbit_retry_max_backoff``
|
|
|
|
Optional. Default: ``30``
|
|
|
|
Maximum seconds to wait before reconnecting on failures when using
|
|
``rabbit`` strategy.
|
|
|
|
* ``qpid_notification_exchange``
|
|
|
|
Optional. Default: ``glance``
|
|
|
|
Message exchange to use when using the ``qpid`` notification strategy.
|
|
|
|
* ``qpid_notification_topic``
|
|
|
|
Optional. Default: ``glanice_notifications``
|
|
|
|
This is the topic prefix for notifications when using the ``qpid``
|
|
notification strategy. When a notification is sent at the ``info`` priority,
|
|
the topic will be ``glance_notifications.info``. The same idea applies for
|
|
the ``error`` and ``warn`` notification priorities. To receive all
|
|
notifications, you would set up a receiver with a topic of
|
|
``glance_notifications.*``.
|
|
|
|
* ``qpid_host``
|
|
|
|
Optional. Default: ``localhost``
|
|
|
|
This is the hostname or IP address of the Qpid broker that will be used
|
|
when Glance has been configured to use the ``qpid`` notification strategy.
|
|
|
|
* ``qpid_port``
|
|
|
|
Optional. Default: ``5672``
|
|
|
|
This is the port number to connect to on the Qpid broker, ``qpid_host``,
|
|
when using the ``qpid`` notification strategy.
|
|
|
|
* ``qpid_username``
|
|
|
|
Optional. Default: None
|
|
|
|
This is the username that Glance will use to authenticate with the Qpid
|
|
broker if using the ``qpid`` notification strategy.
|
|
|
|
* ``qpid_password``
|
|
|
|
Optional. Default: None
|
|
|
|
This is the username that Glance will use to authenticate with the Qpid
|
|
broker if using the ``qpid`` notification strategy.
|
|
|
|
* ``qpid_sasl_mechanisms``
|
|
|
|
Optional. Default: None
|
|
|
|
This is a space separated list of SASL mechanisms to use for authentication
|
|
with the Qpid broker if using the ``qpid`` notification strategy.
|
|
|
|
* ``qpid_reconnect_timeout``
|
|
|
|
Optional. Default: None
|
|
|
|
This option specifies a timeout in seconds for automatic reconnect attempts
|
|
to the Qpid broker if the ``qpid`` notification strategy is used. In general,
|
|
it is safe to leave all of the reconnect timing options not set. In that case,
|
|
the Qpid client's default behavior will be used, which is to attempt to
|
|
reconnect to the broker at exponential back-off intervals (in 1 second, then 2
|
|
seconds, then 4, 8, 16, etc).
|
|
|
|
* ``qpid_reconnect_limit``
|
|
|
|
Optional. Default: None
|
|
|
|
This option specifies a maximum number of reconnect attempts to the Qpid
|
|
broker if the ``qpid`` notification strategy is being used. Normally the
|
|
Qpid client will continue attempting to reconnect until successful.
|
|
|
|
* ``qpid_reconnect_interval_min``
|
|
|
|
Optional. Default: None
|
|
|
|
This option specifies the minimum number of seconds between reconnection
|
|
attempts if the ``qpid`` notification strategy is being used.
|
|
|
|
* ``qpid_reconnect_interval_max``
|
|
|
|
Optional. Default: None
|
|
|
|
This option specifies the maximum number of seconds between reconnection
|
|
attempts if the ``qpid`` notification strategy is being used.
|
|
|
|
* ``qpid_reconnect_interval``
|
|
|
|
This option specifies the exact number of seconds between reconnection
|
|
attempts if the ``qpid`` notification strategy is being used. Setting
|
|
this option is equivalent to setting ``qpid_reconnect_interval_max`` and
|
|
``qpid_reconnect_interval_min`` to the same value.
|
|
|
|
* ``qpid_heartbeat``
|
|
|
|
Optional. Default: ``5``
|
|
|
|
This option is used to specify the number of seconds between heartbeat messages
|
|
exchanged between the Qpid client and Qpid broker if the ``qpid`` notification
|
|
strategy is being used. Heartbeats are used to more quickly detect that a
|
|
connection has been lost.
|
|
|
|
* ``qpid_protocol``
|
|
|
|
Optional. Default: ``tcp``
|
|
|
|
This option is used to specify the transport protocol to use if using the
|
|
``qpid`` notification strategy. To enable SSL, set this option to ``ssl``.
|
|
|
|
* ``qpid_tcp_nodelay``
|
|
|
|
Optional. Default: ``True``
|
|
|
|
This option can be used to disable the TCP NODELAY option. It effectively
|
|
disables the Nagle algorithm for the connection to the Qpid broker. This
|
|
option only applies if the ``qpid`` notification strategy is used.
|
|
|
|
Configuring Access Policies
|
|
---------------------------
|
|
|
|
Access rules may be configured using a
|
|
:doc:`Policy Configuration file <policies>`. Two configuration options tell
|
|
the Glance API server about the policies to use.
|
|
|
|
* ``policy_file=PATH``
|
|
|
|
Optional. Default: Looks for a file called ``policy.json`` or
|
|
``glance.policy.json`` in standard configuration directories.
|
|
|
|
Policy file to load when starting the API server
|
|
|
|
* ``policy_default_rule=RULE``
|
|
|
|
Optional. Default: "default"
|
|
|
|
Name of the rule in the policy configuration file to use as the default rule
|