Upgrading Red Hat Enterprise Linux From Version 6.2 to 6.3

by on June 22, 2012 · 10 comments· LAST UPDATED June 22, 2012

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Red Hat Enterprise Linux v6.3 has been released and available via RHN for immediate update. How do I upgrade my RHEL from 6.2 to the latest 6.3 version?

You can only upgrade from minor release as Red Hat does not support in-place upgrades between any major versions of Red Hat Enterprise Linux. However, a minor upgrade can be done easily and recommended for all users.

Back up any important data on the server

Make a backup - it cannot be stressed enough how important it is to make a backup of your system before you do this. Most of the actions listed in this post are written with the assumption that they will be executed by the root user running the bash or any other modern shell. Type the following commands to see current version:
$ uname -mrs
$ cat /etc/redhat-release

RHEL: Upgrading your current system

Type the following yum command:
# yum update -y
Sample outputs (see quick video demo):

(Video 01: Demo - upgrading RHEL with yum command)

Reboot the Linux server:
# reboot
# shutdown -r now
Verify that everything is working fine:
# uname -a
# cat /etc/redhat_release
# netstat -tulpn
# tail -f /var/log/messages
# tail -f /path/to/log/file
# ps aux | less
# ps aux | egrep 'httpd|mysql'

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{ 10 comments… read them below or add one }

1 kamal June 22, 2012 at 12:07 pm

Hi Vivek….

Thanks for the update….


2 Mike June 22, 2012 at 12:59 pm

What’s that delicious command tab completion?


3 m_goku June 23, 2012 at 11:23 pm

Thank you. Recently I install Centos 6.2 on my system. When RHEL 6.3 out, I wonder if I need to reinstall Centos to upgrade. Your article answer my question.


4 Warren June 25, 2012 at 2:17 pm

Why not use `yum -y upgrade`?

It adds the `–obsoletes` call to `update`, thereby making it a cleaner run.


5 DarioJ July 13, 2012 at 8:30 am

I would also clean metadata just before

yum clean all
yum upgrade


6 Michael July 20, 2012 at 5:55 pm

If you want your system F*ed, then yeah, upgrade to 6.3. Stupid crap destroyed/overwrote config files for dozens of working software packages Apache/PHP being one the most frustrating.

If you have a Broadcom wireless card, you can’t rebuild the drivers for the new kernal…

Don’t do it!


7 Dan September 17, 2013 at 10:22 pm

These are misleading instructions. You are telling people how to update to the latest packages, not to a certain release. The latest release level is 6.4. Following these instructions now would update to 6.4, not 6.3.


8 Gordon July 15, 2014 at 11:04 pm

FWIW, I recommend determining the running OS version by checking the kernel version:
$ uname -r

and then verifying it on the Red Hat Customer portal:

The /etc/redhat-release file can be edited by an account with sudo privileges. This is more sure.


9 mastan September 2, 2014 at 9:54 am

what is os level patching in rhel6


10 mastan September 2, 2014 at 9:58 am

how can configure hardware RAID IN RHEL6


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