nova/releasenotes/notes/deprecate_pluggable_manager...

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---
deprecations:
- |
Nova used to support the concept that ``service managers`` were
replaceable components. There are many config options where you can
replace a manager by specifying a new class. This concept is
deprecated in Mitaka as are the following config options.
* [cells] manager
* metadata_manager
* compute_manager
* console_manager
* consoleauth_manager
* cert_manager
* scheduler_manager
Many of these will be removed in Newton. Users of these options
are encouraged to work with Nova upstream on any features missing
in the default implementations that are needed.