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Merge "Add release note for new keystone role cache config"

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Zuul 2023-06-16 14:05:20 +00:00 committed by Gerrit Code Review
parent 796b3c97ca 7c6618e69a
commit 56313f24f5
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doc/source/release-notes/2023.2-bobcat.rst
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@ -42,8 +42,25 @@ test bundle, and/or a section in the current guide (Charm Guide) that details
its usage. Test bundles are located in the ``src/tests/bundles`` directory of
the relevant charm repository (see all `charm repositories`_).
<TITLE>
~~~~~~~
Keystone role cache config
~~~~~~~~~~~~~~~~~~~~~~~~~~
The keystone charm now supports configuring the keystone [role] cache_time using
a new role-cache-expiration config. If not set, this defaults to the global
expiration_time (configurable by the dogpile-cache-expiration config option). Setting
the role cache_time to something closer to 10s is recommended for
clouds that receive frequent role assignment changes and are sensitive to the
(default) 600s delay that assignements can take to propagate to all keystone
peer caches.
For example, to set the role cache expiration time to 10 seconds do:
.. code-block:: none
juju config keystone role-cache-expiration=10
The result of this being that keystone will only used cached role assignments for up to
10 seconds before refreshing them from the database.
Documentation updates
---------------------