Before you start, please make sure that you followed each step in the previous post.
Since we removed PGPORT variable in unit files (YAY!), the only thing that you should change is the port (unless you want to bind these instances to separate IP addresses...). Let's do it in a scripted way:
sed -i "s/#port = 5432/port = 5432/g" /var/lib/pgsql/9.3/data/postgresql.conf
sed -i "s/#port = 5432/port = 5433/g" /var/lib/pgsql/9.4/data/postgresql.conf
Great. Now 9.3 instances will use 5432, and 9.4 will use 5433. You can change them as you wish.
Finally, please start both instances:
systemctl start postgresql-9.3.service
systemctl start postgresql-9.4.service
You can verify this by connecting to instances using psql:
psql -p 5432 <-- will connect to 9.3 instance
psql -p 5433 <--- will connect to 9.4 instance.
Brian, wonderful publish. About opening up the actual hyperlink I assumed for you to me personally, as I usually carry out, this can be some sort of worthless article. Although I've got to accept anyone regarding these kind of generally skipped on-page features. I realize these horrible at all times!