Binary package “slony1-2-bin” in ubuntu precise
replication system for PostgreSQL: daemon and administration tools
Slony-I is an asynchronous master-
for PostgreSQL with cascading and slave promotion.
.
This package contains the slon daemon and the slonik administration tool.
It should be installed on those hosts where Slony-I daemons are to be run
or administered, which usually, but not necessarily, are the hosts where
the database server nodes are running.