Merge pull request #50135 from zdover23/wip-doc-2023-02-16-backport-50120-to-pacific

pacific: doc/glossary: add "realm" to glossary

Reviewed-by: Cole Mitchell <cole.mitchell@gmail.com>

diff --cc doc/radosgw/multisite.rst
index d4898692c28e30d0caebda014206255d02a9176a,9728b7ce919afbe17f6803c811975962e24f689e..e9530f24f5e381081781b4562963ca5ab02249c7
--- 1/doc/radosgw/multisite.rst
--- 2/doc/radosgw/multisite.rst
+++ b/doc/radosgw/multisite.rst
@@@ -749,8 -749,17 +749,17 @@@ Multi-Site Configuration Referenc
  ==================================
  
  The following sections provide additional details and command-line
 -usage for realms, periods, zone groups and zones.
 +usage for realms, periods, zonegroups and zones.
  
+ For more details on every available configuration option, please check out
+ ``src/common/options/rgw.yaml.in`` or go to the more comfortable :ref:`mgr-dashboard`
+ configuration page (found under `Cluster`) where you can view and set all
+ options easily. On the page, set the level to ``advanced`` and search for RGW,
+ to see all basic and advanced configuration options with a short description.
+ Expand the details of an option to reveal a longer description.
+ 
+ .. _rgw-realms:
+ 
  Realms
  ------