Can't install PostgreSQL on Ubuntu OS

Symptoms

If you try to install PostgreSQL on your Ubuntu server you get an error when running the following command:

V98:

/usr/local/cpanel/scripts/installpostgres

E: Unable to locate package postgresql-devel

E: Unable to locate package postgresql-libs

E: Unable to locate package postgresql-server

info [installpostgres] Completed apt execution “-yf -o Dpkg::Options='--force-confdef' -o Dpkg::Options='--force-confold' install postgresql postgresql-devel postgresql-libs postgresql-server”: in 0.630 second(s).

Use of uninitialized value $pg_data in concatenation (.) or string at /scripts/installpostgres line 148, <STDIN> line 1.

Use of uninitialized value $out in scalar chomp at /scripts/installpostgres line 75, <STDIN> line 1.

info [installpostgres] Updating postgresql configuration now...

Failed to determine postgresql data directory

info [installpostgres] Attempting to restart postgresql...

The PostgreSQL installation failed!

V100: 

/usr/local/cpanel/scripts/installpostgres

cPanel does not support PostgreSQL on this system at this time! at /usr/local/cpanel/scripts/installpostgres line 83.

Workaround

Unfortunately, PostgreSQL is not currently supported on Ubuntu OS.

If you wish to use PostgreSQL, please choose a different Operating system.

The supported operating system can be found here:

What operating systems are supported by cPanel?

This article will be updated once PostgreSQL will be supported in Ubuntu OS.