Centos 7 - anyone?

Hi!

I've just received a new server, and I've the intention to install
Centos7 and PostgreSQL 9.3.5.
After installing the yum repo (as described in
http://www.postgresql.org/download/linux/redhat/) I've installed
everything I need with the command

yum install postgresql93 postgresql93-server postgresql93-contrib

Which eventually worked very well.
After that, I've created a /etc/sysconfig/pgsql/postgresql-9.3
configuration file (as I used to do in Centos 6.5), and then "service
postgresql-9.3 initdb" ! crash, bang, boom.
Wont work, with error:

"[root(at)localhost pgsql]# service postgresql-9.3 initdb
The service command supports only basic LSB actions (start, stop,
restart, try-restart, reload, force-reload, status). For other actions,
please try to use systemctl.
[root(at)localhost pgsql]# systemctl --help
systemctl [OPTIONS...] {COMMAND} ..."

So, I've learned that is a new way of doing things... Reading the yum
repository documentation, I've learned:

"|postgresql-setup initdb
systemctl enable postgresql.service"

Which works partially: it have not taken my
/etc/sysconfig/postgresql-9.3 configuration file for path and other things.

Can anyone point me what I've done wrong?

Thanks,|

--
Atenciosamente,

Edson Carlos Ericksson Richter