title: Multi master replication in postgresql
body: <p>Can someone guide me to do multi-master replication with PostgreSQL. </p>
  
  <p>I have done master-slave replication but how do I get master-master replication. </p>
  
  <p>I have tried  to use pg-pool-II but I couldn't find any good documentation for it. </p>
  
  <p>Let me know what can I do to achieve master-master replication in PostgreSQL.
  thanks.</p>