Remove PostgreSQL 9.3 support

PostgreSQL 9.3 community support ended in November 2018.

doc/appendix-faq.xml

@@ -22,6 +22,9 @@
           &repmgr; 5 is fundamentally the same code base as &repmgr; 4, but provides
           support for the revised replication configuration mechanism in PostgreSQL 12.
         </para>
+        <para>
+          Support for PostgreSQL 9.3 is no longer available from &repmgr; 5.2.
+        </para>
       </note>
       <para>
         &repmgr; 3.x builds on the improved replication facilities added

doc/install-requirements.xml

@@ -14,7 +14,7 @@
   </para>
 
   <para>
-   &repmgr; &repmgrversion; is compatible with all PostgreSQL versions from 9.3. See
+   &repmgr; &repmgrversion; is compatible with all PostgreSQL versions from 9.4. See
    section <link linkend="install-compatibility-matrix">&repmgr; compatibility matrix</link>
    for an overview of version compatibility.
   </para>
@@ -115,7 +115,7 @@
 
           <row>
             <entry>
-              &repmgr; 5.x
+              &repmgr; 5.2
             </entry>
             <entry>
               YES
@@ -123,6 +123,21 @@
             <entry>
               <link linkend="release-current">&repmgrversion;</link> (&releasedate;)
             </entry>
+            <entry>
+              9.4, 9.5, 9.6, 10, 11, 12, 13
+            </entry>
+          </row>
+
+          <row>
+            <entry>
+              &repmgr; 5.0, &repmgr; 5.1
+            </entry>
+            <entry>
+              YES
+            </entry>
+            <entry>
+              <link linkend="release-5.1.0">5.1</link> (2020-04-13)
+            </entry>
             <entry>
               9.3, 9.4, 9.5, 9.6, 10, 11, 12
             </entry>
@@ -226,6 +241,9 @@
         <ulink url="https://www.postgresql.org/docs/9.3/release-9-3-25.html">9.3.25</ulink>
         in November 2018) and will no longer be updated with security or bugfixes.
       </para>
+      <para>
+        Beginning with &repmgr; 5.2, &repmgr; no longer supports PostgreSQL 9.3.
+      </para>
       <para>
         PostgreSQL 9.4 has reached the end of its community support period (final release was
         <ulink url="https://www.postgresql.org/docs/9.4/release-9-4-26.html">9.4.26</ulink>

doc/repmgr-node-rejoin.xml

@@ -76,7 +76,7 @@
           </para>
           <para>
             It is only necessary to provide the <application>pg_rewind</application> path
-            if using PostgreSQL 9.3 or 9.4, and <application>pg_rewind</application>
+            if using PostgreSQL 9.4, and <application>pg_rewind</application>
             is not installed in the PostgreSQL <filename>bin</filename> directory.
           </para>
         </listitem>
@@ -246,7 +246,7 @@
       <command>repmgr node rejoin</command> can optionally use <command>pg_rewind</command> to re-integrate a
       node which has diverged from the rest of the cluster, typically a failed primary.
       <command>pg_rewind</command> is available in PostgreSQL 9.5 and later as part of the core distribution,
-      and can be installed from external sources for PostgreSQL 9.3 and 9.4.
+      and can be installed from external sources for PostgreSQL 9.4.
     </para>
     <note>
       <para>

doc/repmgr-standby-switchover.xml

@@ -147,7 +147,7 @@
           <para>
             Use <application>pg_rewind</application> to reintegrate the old primary if necessary
             (and the prerequisites for using <application>pg_rewind</application> are met).
-            If using PostgreSQL 9.3 or 9.4, and the <application>pg_rewind</application>
+            If using PostgreSQL 9.4, and the <application>pg_rewind</application>
             binary is not installed in the PostgreSQL <filename>bin</filename> directory,
             provide its full path. For more details see also <xref linkend="switchover-pg-rewind"/>.
           </para>

doc/repmgr.xml

@@ -26,7 +26,7 @@
   <abstract>
    <para>
    This is the official documentation of &repmgr; &repmgrversion; for
-   use with PostgreSQL 9.3 - PostgreSQL 12.
+   use with PostgreSQL 9.4 - PostgreSQL 13.
    </para>
    <para>
      &repmgr; is being continually developed and we strongly recommend using the

doc/switchover.xml

@@ -244,16 +244,15 @@
     </para>
     <para>
       <application>pg_rewind</application> has been part of the core PostgreSQL distribution since
-      version 9.5. Users of versions 9.3 and 9.4 will need to manually install it; the source code is available here:
+      version 9.5. Users of PostgreSQL 9.4 will need to manually install it; the source code is available here:
       <ulink url="https://github.com/vmware/pg_rewind">https://github.com/vmware/pg_rewind</ulink>.
       If the <application>pg_rewind</application>
       binary is not installed in the PostgreSQL <filename>bin</filename> directory, provide
       its full path  on the demotion candidate  with <option>--force-rewind</option>.
     </para>
     <para>
-      Note that building the 9.3/9.4 version of <application>pg_rewind</application> requires the PostgreSQL
-      source code. Also, PostgreSQL 9.3 does not provide <varname>wal_log_hints</varname>,
-      meaning data checksums must have been enabled when the database was initialized.
+      Note that building the 9.4 version of <application>pg_rewind</application> requires the PostgreSQL
+      source code.
     </para>
   </sect2>
 
@@ -343,7 +342,7 @@
    <itemizedlist spacing="compact" mark="bullet">
     <listitem>
      <simpara>
-      If using PostgreSQL 9.3 or 9.4, you should ensure that the shutdown command
+      If using PostgreSQL 9.4, you should ensure that the shutdown command
       is configured to use PostgreSQL's <varname>fast</varname> shutdown mode (the default in 9.5
       and later). If relying on <command>pg_ctl</command> to perform database server operations,
       you should include <literal>-m fast</literal> in <varname>pg_ctl_options</varname>