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|
=========================================
Example Configuration File for ``nova``
=========================================
This sample configuration file demonstrates how the OpenStack compute
service (nova) might be configured.
.. literalinclude:: nova_sample.conf
:language: ini
:prepend: # nova_sample.conf
Two logger nodes are set up, ``root`` and ``nova``.
.. literalinclude:: nova_sample.conf
:language: ini
:lines: 1-2
Several handlers are created, to send messages to different outputs.
.. literalinclude:: nova_sample.conf
:language: ini
:lines: 4-5
And two formatters are created to be used based on whether the logging
location will have OpenStack request context information available or
not.
A Fluentd formatter is also shown.
.. literalinclude:: nova_sample.conf
:language: ini
:lines: 7-8
The ``root`` logger is configured to send messages to the ``null``
handler, silencing most messages that are not part of the nova
application code namespace.
.. literalinclude:: nova_sample.conf
:language: ini
:lines: 10-12
The ``nova`` logger is configured to send messages marked as ``INFO``
and higher level to the standard error stream.
.. literalinclude:: nova_sample.conf
:language: ini
:lines: 14-17
The ``amqp`` and ``amqplib`` loggers, used by the module that connects
the application to the message bus, are configured to emit warning
messages to the standard error stream.
.. literalinclude:: nova_sample.conf
:language: ini
:lines: 19-27
The ``sqlalchemy`` logger, used by the module that connects the
application to the database, is configured to emit warning messages to
the standard error stream.
.. literalinclude:: nova_sample.conf
:language: ini
:lines: 29-35
Similarly, ``boto``, ``suds``, and ``eventlet.wsgi.server`` are
configured to send warnings to the standard error stream.
.. literalinclude:: nova_sample.conf
:language: ini
:lines: 37-53
The ``stderr`` handler, being used by most of the loggers above, is
configured to write to the standard error stream on the console.
.. literalinclude:: nova_sample.conf
:language: ini
:lines: 55-58
The ``stderr`` handler uses the ``context`` formatter, which takes its
configuration settings from ``oslo.config``.
.. literalinclude:: nova_sample.conf
:language: ini
:lines: 85-86
The ``stdout`` and ``syslog`` handlers are defined, but not used.
The ``fluent`` handler is useful to send logs to ``fluentd``.
It is a part of fluent-logger-python and you can install it as following.
::
$ pip install fluent-logger
This handler is configured to use ``fluent`` formatter.
.. literalinclude:: nova_sample.conf
:language: ini
:lines: 75-78
.. literalinclude:: nova_sample.conf
:language: ini
:lines: 91-92
|
