standby follow: improve handling of --upstream-node-id

doc/repmgr-standby-follow.sgml

@@ -24,7 +24,7 @@
     <para>
       This command will force a restart of the standby server, which must be
       running. It can only be used to attach an active standby to the current primary node
-   (and not to another standby).
+      (and not to another standby).
     </para>
 	<tip>
       <para>
@@ -78,6 +78,20 @@
         </listitem>
       </varlistentry>
 
+      <varlistentry>
+        <term><option>--upstream-node-id</option></term>
+        <listitem>
+          <para>
+            Node ID of the new primary.
+          </para>
+          <para>
+            This option is intended for use by <application>repmgrd</application>, when
+			instructing standbys to follow the new primary. For more details
+			see <link linkend="repmgrd-automatic-failover-configuration">Automatic failover configuration</link>.
+          </para>
+        </listitem>
+      </varlistentry>
+
       <varlistentry>
         <term><option>-w</option></term>
         <term><option>--wait</option></term>

doc/repmgrd-configuration.sgml

@@ -36,7 +36,7 @@
 
 
     <sect2 id="repmgrd-automatic-failover-configuration">
-      <title>automatic failover configuration</title>
+      <title>Automatic failover configuration</title>
       <para>
         If using automatic failover, the following <application>repmgrd</application> options *must* be set in
         <filename>repmgr.conf</filename> :

doc/version.sgml

@@ -1 +1 @@
-<!ENTITY repmgrversion "4.2dev">
+<!ENTITY repmgrversion "4.3dev">