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   3    First set the configuration options in <code class="filename">postgresql.conf</code>:
   4 </p><pre class="programlisting">
   5 wal_level = logical
   6 </pre><p>
   7    The other required settings have default values that are sufficient for a
   8    basic setup.
   9   </p><p>
  10    <code class="filename">pg_hba.conf</code> needs to be adjusted to allow replication
  11    (the values here depend on your actual network configuration and user you
  12    want to use for connecting):
  13 </p><pre class="programlisting">
  14 host     all     repuser     0.0.0.0/0     md5
  15 </pre><p>
  16   </p><p>
  17    Then on the publisher database:
  18 </p><pre class="programlisting">
  19 CREATE PUBLICATION mypub FOR TABLE users, departments;
  20 </pre><p>
  21   </p><p>
  22    And on the subscriber database:
  23 </p><pre class="programlisting">
  24 CREATE SUBSCRIPTION mysub CONNECTION 'dbname=foo host=bar user=repuser' PUBLICATION mypub;
  25 </pre><p>
  26   </p><p>
  27    The above will start the replication process, which synchronizes the
  28    initial table contents of the tables <code class="literal">users</code> and
  29    <code class="literal">departments</code> and then starts replicating
  30    incremental changes to those tables.
  31   </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="logical-replication-upgrade.html" title="29.13. Upgrade">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="logical-replication.html" title="Chapter 29. Logical Replication">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="jit.html" title="Chapter 30. Just-in-Time Compilation (JIT)">Next</a></td></tr><tr><td width="40%" align="left" valign="top">29.13. Upgrade </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 18.0 Documentation">Home</a></td><td width="40%" align="right" valign="top"> Chapter 30. Just-in-Time Compilation (<acronym class="acronym">JIT</acronym>)</td></tr></table></div></body></html>