openstack/keystone
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Merge "Add an enhanced debug configuration technique to caching guide"

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Zuul 2020-07-07 19:16:38 +00:00 committed by Gerrit Code Review
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doc/source/admin/caching-layer.inc
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@ -201,3 +201,23 @@ The following example shows how to configure the memcached back end:
You need to specify the URL to reach the ``memcached`` instance with the
``backend_argument`` parameter.
Verbose cache logging
---------------------
We do not recommend using verbose cache logging by default in production
systems since it's extremely noisy. However, you may need to debug cache
issues. One way to see how keystone is interacting with a cache backend is to
enhance logging. The following configuration will aggregate oslo and dogpile
logs into keystone's log file with increased verbosity:
.. code-block:: ini
[DEFAULT]
default_log_levels = oslo.cache=DEBUG,dogpile.core.dogpile=DEBUG
[cache]
debug_cache_backend = True
These logs will include cache hits and misses, making it easier to diagnose
cache configuration and connectivity issues.