The  requires access to two Postgres databases.

The scheduling feature is enabled by default. If it's enabled, the following databases are also required:

This section describes how to install Postgres, after which you can create and initialize the databases and their users.

Limitations:

Pre-requisites:

For CentOS 6.x:

wget https://yum.postgresql.org/9.3/redhat/rhel-6-x86_64/pgdg-centos93-9.3-3.noarch.rpm
sudo yum -y install pgdg-centos93-9.3-3.noarch.rpm
sudo yum -y install postgresql93-server

For CentOS 7.x:

wget https://yum.postgresql.org/9.3/redhat/rhel-7-x86_64/pgdg-centos93-9.3-3.noarch.rpm
sudo yum -y install pgdg-centos93-9.3-3.noarch.rpm
sudo yum -y install postgresql93-server

For Red Hat Enterprise Linux 6.x:

wget https://yum.postgresql.org/9.3/redhat/rhel-6-x86_64/pgdg-redhat93-9.3-3.noarch.rpm
sudo yum -y install pgdg-redhat93-9.3-3.noarch.rpm
sudo yum -y install postgresql93-server

For Red Hat Enterprise Linux 7.x:

wget https://yum.postgresql.org/9.3/redhat/rhel-7-x86_64/pgdg-redhat93-9.3-3.noarch.rpm
sudo yum -y install pgdg-redhat93-9.3-3.noarch.rpm
sudo yum -y install postgresql93-server

For Ubuntu 14.04:

Add the repository's archive key to your apt-key keyring:

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

Create a file named /etc/apt/sources.list.d/pgdg.list, containing the following:

deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main
deb-src http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main

Run the following command:

sudo apt-get update
sudo apt-get install -y postgresql-9.3


For Ubuntu 16.04:

Add the repository's archive key to your apt-key keyring:

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

Create a file named /etc/apt/sources.list.d/pgdg.list, containing the following:

deb http://apt.postgresql.org/pub/repos/apt/ xenial-pgdg main

Run the following command:

sudo apt-get update
sudo apt-get install -y postgresql-9.3