How To Install postgresql-9.6-slony1-2 on Debian 9
Introduction
In this tutorial we learn how to install postgresql-9.6-slony1-2 on Debian 9.
What is postgresql-9.6-slony1-2
postgresql-9.6-slony1-2 is:
Slony-I is an asynchronous master-to-multiple-slaves replication system for PostgreSQL with cascading and slave promotion.
This package contains the support functions that are loaded into the PostgreSQL database server. It needs to be installed on the hosts where the database server nodes are running. This package works with version 9.6 of the PostgreSQL server; you need the package that corresponds to the version of your database server.
The actual replication daemon and the administration tools are in the package slony1-2-bin. This package is useless without slony1-2-bin installed somewhere in the network.
There are three methods to install postgresql-9.6-slony1-2 on Debian 9. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install postgresql-9.6-slony1-2 Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install postgresql-9.6-slony1-2 using apt-get by running the following command:
sudo apt-get -y install postgresql-9.6-slony1-2
Install postgresql-9.6-slony1-2 Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install postgresql-9.6-slony1-2 using apt by running the following command:
sudo apt -y install postgresql-9.6-slony1-2
Install postgresql-9.6-slony1-2 Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install postgresql-9.6-slony1-2 using aptitude by running the following command:
sudo aptitude -y install postgresql-9.6-slony1-2
How To Uninstall postgresql-9.6-slony1-2 on Debian 9
To uninstall only the postgresql-9.6-slony1-2 package we can use the following command:
sudo apt-get remove postgresql-9.6-slony1-2
Uninstall postgresql-9.6-slony1-2 And Its Dependencies
To uninstall postgresql-9.6-slony1-2 and its dependencies that are no longer needed by Debian 9, we can use the command below:
sudo apt-get -y autoremove postgresql-9.6-slony1-2
Remove postgresql-9.6-slony1-2 Configurations and Data
To remove postgresql-9.6-slony1-2 configuration and data from Debian 9 we can use the following command:
sudo apt-get -y purge postgresql-9.6-slony1-2
Remove postgresql-9.6-slony1-2 configuration, data, and all of its dependencies
We can use the following command to remove postgresql-9.6-slony1-2 configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge postgresql-9.6-slony1-2
Dependencies
postgresql-9.6-slony1-2 have the following dependencies:
References
Summary
In this tutorial we learn how to install postgresql-9.6-slony1-2 package on Debian 9 using different package management tools: apt, apt-get and aptitude.