PostgreSQL replication with Slony-I

jorti@pm.me (Juan Orti Alcaine) — Sat, 09 Feb 2013 00:00:00 +0000

In recent versions of PostgreSQL there are replication capabilities built-in, but for older versions I’ve been using Slony-I. I’m going to describe how I’ve replicated a database running on PostgreSQL 8.4 with Slony 1.2. For more info, you can read the official documentation.

Create a superuser role in both servers for replication:

CREATE ROLE slony WITH SUPERUSER LOGIN PASSWORD 'mipassword';

Example values:

CLUSTERNAME=db_cluster MASTERDBNAME=mydb SLAVEDBNAME=mydb MASTERHOST=psql01.example.com SLAVEHOST=psql02.example.com REPLICATIONUSER=slony DBUSER=user export CLUSTERNAME MASTERDBNAME SLAVEDBNAME MASTERHOST SLAVEHOST REPLICATIONUSER DBUSER

Slony on Apuntes de root

PostgreSQL replication with Slony-I