doc/glossary: add "Quorum" to glossary

Add the term "Quorum" to the glossary and link to the part of
architecture.rst concerning Monitors. The sticky header at the top of
the docs.ceph.com website gets in the way of the location linked to in
this commit, but fatigue and disgust prevent me from spending time today
trial-and-erroring my way through the hostile and ill-documented
wilderness of scroll-margin so that the link goes where it should.

Co-authored-by: Anthony D'Atri <anthony.datri@gmail.com>
Signed-off-by: Zac Dover <zac.dover@proton.me>
(cherry picked from commit c2f6a770bf0e12296c334d99ac86ff4732ec29b7)

diff --git a/doc/architecture.rst b/doc/architecture.rst
index bfce7e25d4ed60bfee801039ffafcee6b27c3279..852225ce6ad7b6516fa80486d69e071947f47386 100644 (file)
--- a/doc/architecture.rst
+++ b/doc/architecture.rst
@@ -30,6 +30,8 @@ A Ceph Storage Cluster consists of multiple types of daemons:
 - :term:`Ceph Manager`
 - :term:`Ceph Metadata Server`
 
+.. _arch_monitor:
+
 Ceph Monitors maintain the master copy of the cluster map, which they provide
 to Ceph clients. Provisioning multiple monitors within the Ceph cluster ensures
 availability in the event that one of the monitor daemons or its host fails.

diff --git a/doc/glossary.rst b/doc/glossary.rst
index 0d35c9004721351691fac75170a5576faaced7c8..4d70376849d5adef142310a4c0c991b1288a89ad 100644 (file)
--- a/doc/glossary.rst
+++ b/doc/glossary.rst
@@ -271,7 +271,7 @@
                 The Ceph manager software, which collects all the state from
                 the whole cluster in one place.
 
-       MON
+       :ref:`MON<arch_monitor>`
                The Ceph monitor software.
 
        Node
@@ -337,6 +337,12 @@
                 Firefly (v. 0.80). See :ref:`Primary Affinity
                 <rados_ops_primary_affinity>`.
 
+        Quorum 
+                Quorum is the state that exists when a majority of the
+                :ref:`Monitors<arch_monitor>` in the cluster are ``up``. A
+                minimum of three :ref:`Monitors<arch_monitor>` must exist in
+                the cluster in order for Quorum to be possible.
+
        RADOS
                 **R**\eliable **A**\utonomic **D**\istributed **O**\bject
                 **S**\tore. RADOS is the object store that provides a scalable