Ubuntu – installing postgres on ubuntu package not available

postgresqlUbuntu

I'm setting up a VPS with Ruby and Postgres. On my local machine, I have postgresql 9.2.3 (client and server) installed and therefore wanted to install the same on my VPS. Following the instructions of this blog post http://hendrelouw73.wordpress.com/2012/11/14/how-to-install-postgresql-9-1-on-ubuntu-12-10-linux/for installing postgres on ubuntu (with the only difference that I'm trying to install 9.2.3. and he installed 9.1), I did the following

sudo apt-get install postgresql-9.2.3
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package postgresql-9.2.3
E: Couldn't find any package by regex 'postgresql-9.2.3'

However, as you can see, it couldn't find a package postgresql-9.2.3. Yet, I have that package installed on my local machine (which I installed on my Mac with Homebrew).

Can you help me understand what I'm doing wrong?

Update
I also tried to install it leaving off the '3' at the end like you see below but it didn't work as you can see.

 sudo apt-get install postgresql-9.2
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package postgresql-9.2 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'postgresql-9.2' has no installation candidate

Update

Ign http://security.ubuntu.com quantal-security InRelease
Ign http://archive.ubuntu.com quantal InRelease
Hit http://security.ubuntu.com quantal-security Release.gpg
Ign http://archive.ubuntu.com quantal-updates InRelease
Hit http://security.ubuntu.com quantal-security Release
Hit http://archive.ubuntu.com quantal Release.gpg
Get:1 http://archive.ubuntu.com quantal-updates Release.gpg [933 B]
Hit http://security.ubuntu.com quantal-security/main i386 Packages
Hit http://archive.ubuntu.com quantal Release
Get:2 http://archive.ubuntu.com quantal-updates Release [49.6 kB]
Hit http://security.ubuntu.com quantal-security/main Translation-en
Hit http://archive.ubuntu.com quantal/main i386 Packages 
Hit http://archive.ubuntu.com quantal/universe i386 Packages
Ign http://security.ubuntu.com quantal-security/main Translation-en_US
Hit http://archive.ubuntu.com quantal/main Translation-en
Hit http://archive.ubuntu.com quantal/universe Translation-en
Get:3 http://archive.ubuntu.com quantal-updates/main i386 Packages [259 kB]
Get:4 http://archive.ubuntu.com quantal-updates/universe i386 Packages [192 kB]
Hit http://archive.ubuntu.com quantal-updates/main Translation-en
Hit http://archive.ubuntu.com quantal-updates/universe Translation-en
Ign http://archive.ubuntu.com quantal/main Translation-en_US
Ign http://archive.ubuntu.com quantal/universe Translation-en_US
Ign http://archive.ubuntu.com quantal-updates/main Translation-en_US
Ign http://archive.ubuntu.com quantal-updates/universe Translation-en_US
Fetched 501 kB in 3s (148 kB/s)
Reading package lists... Done
postgresql-9.1 - object-relational SQL database, version 9.1 server
postgresql-9.1-dbg - debug symbols for postgresql-9.1
postgresql-9.1-debversion - Debian version number type for PostgreSQL
postgresql-9.1-ip4r - IPv4 and IPv4 range index types for PostgreSQL 9.1
postgresql-9.1-orafce - Oracle support functions for PostgreSQL 9.1
postgresql-9.1-pgfincore - set of PostgreSQL functions to manage blocks in memory
postgresql-9.1-pgmemcache - PostgreSQL interface to memcached
postgresql-9.1-pgmp - arbitrary precision integers and rationals for PostgreSQL 9.1
postgresql-9.1-pgpool2 - connection pool server and replication proxy for PostgreSQL - modules
postgresql-9.1-pljava-gcj - Java procedural language for PostgreSQL 9.1
postgresql-9.1-pllua - Lua procedural language for PostgreSQL 9.1
postgresql-9.1-plproxy - database partitioning system for PostgreSQL 9.1
postgresql-9.1-plr - Procedural language interface between PostgreSQL and R
postgresql-9.1-plsh - PL/sh procedural language for PostgreSQL 9.1
postgresql-9.1-postgis - Geographic objects support for PostgreSQL 9.1
postgresql-9.1-prefix - Prefix Range module for PostgreSQL
postgresql-9.1-preprepare - Pre Prepare your Statement server side
postgresql-9.1-slony1-2 - replication system for PostgreSQL: PostgreSQL 9.1 server plug-in

Best Answer

In Ubuntu official repositories only PostgreSQL 9.1 is available. That is why it couldn't be found.

In order to get PostgreSQL v9.2 in your VPS using apt you should follow the official PostgreSQL procedure for Ubuntu found here

It consists of adding PostgreSQL official repository as one of your repository source

  1. Create the file /etc/apt/sources.list.d/pgdg.list

  2. Insert this line deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main

  3. Import the repository signing key wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -

  4. Refresh your repositories cache sudo apt-get update

Now you can simply do sudo apt-get install postgresql-9.2