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features:
- |
``neutron_lib.worker.BaseWorker`` will now set the process title
on process start, if it is a new process. By default, the name
will be "neutron-server", and the description will be the name
of the worker class, followed by the original process title.
Both fields are customizable via the ``name`` and ``desc``
arguments to ``BaseWorker.start()``, and the change
can be disabled via the ``set_proctitle`` argument to the
``__init__`` function. ``neutron.conf`` will have a setting
for disabling this functionality for all in-tree workers, but
by default, all out of tree plugin workers will set their name
at fork time. Available settings are 'on' (described above, and
the default), 'off' (same as today), or 'brief', which settings
the process name to just name and description. 'brief' is probably
most useful/simple for deployers, but 'on' is the default in order
to prevent as many script related breakages as possible.
upgrade:
- Any plugin which forks worker processes from neutron-server will
have its proctitle set to "neutron-server" plus a classname in ps
output. Any tool used for monitoring/maintenance that watches
the process table should be modified to only look for the string
``neutron-server``. On the plus side, it will now be possible
to distinguish which process belongs to which plugin, based on
the new naming. Note that the original process string is still
in the proctitle, so as long as the scripting is not looking for
a perfect string match, it should continue to work.
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