CentOS - Upgrade PostgreSQL from 8.4.20 to 9.4.

[Trentor]

Hi,

I'm using VestaCP with Centos 6.

I've got installed PostgreSQL ver. 8.4 and I'm looking for upgrade to 9.4. I've just one database that I can remove without problem prior to upgrade, nothing to save.

The most important for me is keep the possibility to use PostgreSQL with VestaCP.

Can anyone help me with that?

Thanks!!