Install slony1-2-bin by entering the following commands in the terminal:
sudo apt update sudo apt install slony1-2-bin
Description:
replication system for PostgreSQL: daemon and administration tools
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.
Homepage: http://slony.info/
Version: 2.2.6-1
Section: universe/database