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>

diff --git a/doc/architecture.rst b/doc/architecture.rst
index 189977fc7be3bd8f56ff5500ff16c66209ffcc61..983cec2300a6c1afd3a6fe7321a16f4dc2f55758 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 d5619e464c8bede6aef1d782c972f77eda8349be..df7a0d18afa1f8258064e98b72680f3e70b15583 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