3.0 configuration: update replication tutorials (review fixes 1)

Author: andreyaksenov

doc/how-to/replication/repl_bootstrap.rst

@@ -232,6 +232,10 @@ To check that a replica (``instance002``) gets all updates from the master, foll
             - {1: 21}
             ...
 
+    .. NOTE::
+
+        Note that a ``vclock`` value might include the 0-th component that is related to local space operations and might differ for different instances in a replica set.
+
 
 
 ..  _replication-add_instances:
@@ -290,6 +294,8 @@ Starting an instance
 Reloading configuration
 ~~~~~~~~~~~~~~~~~~~~~~~
 
+After adding ``instance003`` to the configuration and starting it, configurations on all instances should be reloaded to allow ``instance001`` and ``instance002`` to get data from the new instance in case it becomes a master:
+
 1.  Connect to ``instance003`` using ``tt connect``:
 
     .. code-block:: console
@@ -598,7 +604,9 @@ Removing an instance from the configuration
 Removing an instance from the '_cluster' space
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-1.  Select all the tuples in the :ref:`box.space._cluster <box_space-cluster>` system space:
+To remove an instance from the replica set permanently, it should be removed from the :ref:`box.space._cluster <box_space-cluster>` system space:
+
+1.  Select all the tuples in the ``box.space._cluster`` system space:
 
     .. code-block:: console
 

doc/how-to/replication/repl_bootstrap_auto.rst

@@ -272,8 +272,7 @@ To check that replicas (``instance001`` and ``instance003``) get all updates fro
 
     .. NOTE::
 
-        The 0-th component of ``vclock`` isn't related to replication.
-
+        The 0-th component of ``vclock`` is related to local space operations and might differ for different instances in a replica set.
 
 
 

doc/how-to/replication/repl_bootstrap_master_master.rst

@@ -207,6 +207,10 @@ Checking a replica set status
             name: instance001
         ...
 
+    .. NOTE::
+
+        Note that a ``vclock`` value might include the 0-th component that is related to local space operations and might differ for different instances in a replica set.
+