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+.. index::
+   single: glossary
+
+.. _glossary:
+
+Glossary
+--------
+
+.. glossary::
+
+    assign
+      In the scheduler, this refers to associating a resource with a node. Do
+      not use *allocate* for this purpose.
+
+    bundle
+      The collective resource type associating instances of a container with
+      storage and networking. Do not use :term:`container` when referring to
+      the bundle as a whole.
+
+    cluster layer
+      The layer of the :term:`cluster stack` that provides membership and
+      messaging capabilities (such as Corosync).
+
+    cluster stack
+      The core components of a high-availability cluster: the
+      :term:`cluster layer` at the "bottom" of the stack, then Pacemaker, then
+      resource agents, and then the actual services managed by the cluster at
+      the "top" of the stack. Do not use *stack* for the cluster layer alone.
+
+    CPG
+      Corosync Process Group. This is the messaging layer in a Corosync-based
+      cluster. Pacemaker daemons use CPG to communicate with their counterparts
+      on other nodes.
+
+    container
+      This can mean either a container in the usual sense (whether as a
+      standalone resource or as part of a bundle), or as the container resource
+      meta-attribute (which does not necessarily reference a container in the
+      usual sense).
+
+    dangling migration
+      Live migration of a resource consists of a **migrate_to** action on the
+      source node, followed by a **migrate_from** on the target node, followed
+      by a **stop** on the source node. If the **migrate_to** and
+      **migrate_from** have completed successfully, but the **stop** has not
+      yet been done, the migration is considered to be *dangling*.
+
+    dependent
+      In colocation constraints, this refers to the resource located relative
+      to the :term:`primary` resource. Do not use *rh* or *right-hand* for this
+      purpose.
+
+    IPC
+      Inter-process communication. In Pacemaker, clients send requests to
+      daemons using libqb IPC.
+
+    message
+      This can refer to log messages, custom messages defined for a
+      **pcmk_output_t** object, or XML messages sent via :term:`CPG` or
+      :term:`IPC`.
+
+    metadata
+      In the context of options and resource agents, this refers to OCF-style
+      metadata. Do not use a hyphen except when referring to the OCF-defined
+      action name *meta-data*.
+
+    primary
+      In colocation constraints, this refers to the resource that the
+      :term:`dependent` resource is located relative to. Do not use *lh* or
+      *left-hand* for this purpose.
+
+    primitive
+      The fundamental resource type in Pacemaker. Do not use *native* for this
+      purpose.
+
+    score
+      An integer value constrained between **-PCMK_SCORE_INFINITY** and
+      **+PCMK_SCORE_INFINITY**. Certain strings (such as
+      **PCMK_VALUE_INFINITY**) parse as particular score values. Do not use
+      *weight* for this purpose.
+
+    self-fencing
+      When a node is chosen to execute its own fencing. Do not use *suicide*
+      for this purpose.