Slony-I is an asynchronous master-to-multiple-slaves replication system 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. . Important: It is currently not possible to upgrade a running cluster from Slony-I version 1.2 to version 2.0 (this package). Use this package only for new deployments or if you can afford longer downtimes.