[CentOS] Question about 7.3

Tue Jan 31 14:59:42 UTC 2017
Johnny Hughes <johnny at centos.org>

On 01/30/2017 07:41 PM, TE Dukes wrote:
> I haven't done a fresh install in years. I've always gone the upgrade route.
> Seemed to have always worked for me.
> I moved to 7.3 since it supports the latest versions of some programs I want
> to use to implement as a backup server/RAID/NAS for 3 machines here at home
> and a remote laptop at work.
> So, the question is, is there something different in 7.3 than the previous 7
> versions?
> The reason I ask is I was running a lesser version of 7, I think 7.1, as a
> VM on 6.8. I remember I chose not to install the most recent version at the
> time. Never had these issues. Not really issues but everything just worked
> without a lot of expertise involved.
> One thing I could never figure out is that on 6.8, I have the zoneminder
> repo installed and when I did a yum update on the 7.1 VM, it was also
> accessing the zmrepo which wasn't installed. Just thought it was odd.
> Anyway, I really appreciate the help and keep paying it forward!!

If you do a yum update after install from any CentOS-7 install and if
you choose to accept the updates then you are running the latest version
of CentOS-7 (right now, 7.3.1611 + updates).

CentOS-7 is the distro .. 7.0.1406, 7.1.1501, 7.2.1511, 7.3.1611 are
'point in time' releases of CentOS-7 .. the 14, 15 or 16 is the YEAR
that Red Hat released the source code (2015 or 2016).  The last two
digits are the MONTH that Red Hat released that version of the Source
Code.  So, 7.0.1406 is based on the Source Code for RHEL 7.0 and was
released in June of 2014.  The latest point in time release is 7.3.1611
.. It is based on RHEL 7.3 Source Code, which was released in November
of 2016.

So, if you install 7.0.1406, then run yum update, you will be at 7.3.1611.

If you want to know what version you are actually running do:

cat /etc/centos-release

It will look something like this:

[jhughes at w541 ~]$ cat /etc/centos-release
CentOS Linux release 7.3.1611 (Core)

NOTE:  If you are NOT running 7.3.1611 then your install is insecure.
In order to keep you CentOS install secure, you must maintain it up to
date by running 'yum update' periodically.

This mailing list gets all mail daily forwarded as a digest from the
centos-announce mailing list which lists updates.  Here is an archive:


Since 7.1.1503 source code was released in March 2015, your install
would be missing all the updates listed there for 'CentOS 7' after March
2015 .. and also all updates listed on or after March 2105 on the CR
announce list as well:


So your machine would be vulnerable to any update that is listed as
'security' in those months (including and after) March 2015, if you have
not done updates.  If you have done updates often, then you are running

Johnny Hughes

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