Upgrade need quite some learning curve

• By FocalX Solutions
• on 11/08/2014

Upgrade between CentOS 6 to 7 is quite some different than 5 to 6 or even 4 to 5. CentOS 7 has some fundamental changes that require you to re-establish your admin routine.
Some of the big changes include but not limited to:
1. systemd replacing System V Init
2. MariaDB replacing MySQL
3. firewalld replacing iptables ip6tables
4. Kernel 3.1
5. XFS supported by default instead of ext4
6 Docker container support

Unless you have been following Fedora closely, you may have quite some learning curve before get use to admin CentOS 7.

Also, EPEL repository is still quite empty. So, for production, I would recommend to stay with 6.5 for a little longer.