PostgreSQL 9
From A2 Hosting : Wiki Support : Customer Edited Wiki : 24/7 Support
Postgresql 9 is available for install in the CentOS, Debian, Fedora, and Ubuntu templates on our VPS Hosting packages. It can be installed by running the following as root in your VPS: (the quickinstaller is not compatible on our Managed VPS plans)
sh /usr/sbin/quickinstaller.sh
Choose the "Install Postgresql 9" from the presented menu. The install process will run through updating your VPS, and then install Postgresql 9 with all the default settings.
