[CentOS] Is every CentOS release supported for 7 years?

Sat May 22 18:09:22 UTC 2010
Aniruddha <mailingdotlist at gmail.com>

Hi,

I've read some posts in the forums which seems to indicate that not
every CentOS version is well supported. Is it possible to install
CentOS 5.5 on a server and only apply security updates for 7 years? Or
is the preferred way to upgrade to each minor version? Thanks in
advance!

Relevant forum quotes:

Probably not relevant to the problem; however, the current release is
5.4 - 5.3 is getting seriously obsolete with respect to security
problems and bugs.
http://centos.caosity.org/modules/newbb/viewtopic.php?viewmode=flat&order=ASC&topic_id=25069&forum=39&move=prev&topic_time=1267482814

If you really mean 5.0, it is seriously obsolete and has numerous
known bugs and security issues that have been fixed in subsequent
updates. Obsolete releases are not supported, nor is it advisable to
be installing or running them. See the CentOS 5.5 Release Notes for
details.
https://www.centos.org/modules/newbb/viewtopic.php?topic_id=26339&forum=37