I found this on redhat.com the other day….
It is now possible to limit yum to install security updates only. To do so, simply install the yum-security plugin and run the following command:
yum update –security
Hopefully this will allow fedora users to have the option of running a “stable” install 
I after installing Fedora7 I thought I’d take a look at the stats the project had gathered, I saw some centos devices, but couldn’t find a rpm.
I’ve had a go at building one, it mostly works (this is my nagios box), it’s a rebuild of the f7 source, I have to frig about with the spec file, so I’ve published my source rpm here, search for Nick in the .spec file, you’ll see my bodge.
The smolt rpms are in my yum repo, feel free to download the packages and have a go.
I was doing some testing on my server the other day, and realised that http compression within apache (httpd) was not enabled by default. Further digging showed me that mod_defate was what I needed, and infact it was installed by default on my CentOS box.
How to enable mod_default on Centos: Create /etc/httpd/conf.d/deflate.conf with the following contents
# Insert filter
SetOutputFilter DEFLATE
# Netscape 4.x has some problems...
BrowserMatch ^Mozilla/4 gzip-only-text/html
# Netscape 4.06-4.08 have some more problems
BrowserMatch ^Mozilla/4.0[678] no-gzip
# MSIE masquerades as Netscape, but it is fine
BrowserMatch bMSIE !no-gzip !gzip-only-text/html
# Don't compress images
SetEnvIfNoCase Request_URI .(?:gif|jpe?g|png)$ no-gzip dont-vary
# Don't compress already compressed stuff !
SetEnvIfNoCase Request_URI .(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary
SetEnvIfNoCase Request_URI .pdf$ no-gzip dont-vary
# Make sure proxies don't deliver the wrong content
Header append Vary User-Agent env=!dont-vary
# Log Stuff !
# DeflateFilterNote Input input_info
# DeflateFilterNote Output output_info
# DeflateFilterNote Ratio ratio_info
# LogFormat '"%r" %{output_info}n/%{input_info}n (%{ratio_info}n%%)' deflate
# CustomLog /var/log/httpd/deflate_log deflate
restart httpd (/etc/init.d/httpd restart) and your done
References:
Why has it taken me so long to spot this ? Looks like this draft was written on the 13th May, if I hadn’t have been just about to download FC7 then I’d have missed it !
EPEL – Fedora Project Wiki
EPEL is a volunteer-based community effort from the Fedora project to create a repository of high-quality add-on packages that complement the Fedora-based Red Hat Enterprise Linux (RHEL) and its compatible spinoffs like CentOS or Scientific Linux.
About time, and thank you redhat/fedora, want fedora extra packages in centos, then install this epel-release .rpm frickin’ sweet ! 
I’ve taken to using CentOS on my servers, and fedora on my Laptop. New job, means new laptop, and to avoid fedora update hell, I thought I’d try CentOS on my laptop.
All seems good other than my wifi card not being detected, and for some reason googling for “centos 5 intel 3945” didn’t provide a working anserwer, actually I found the answer by googling for “supplementary disk centos 5” which finds this thread that says…
Install dag’s repo (this rpm), and then install dkms-ipw3945 (yum will pick up the dependancies)
yum install dkms-ipw3945
Next enable network manager…
chkconfig --level 345 NetworkManager on chkconfig --level 345 NetworkManagerDispatcher on
reboot (seriously) and when you next log in you’ll get a little icon in you system tray where you can manage your WiFi
Whilst doing some routine maintenance, I noticed that I never published the rkhunter rpm I built, the software is officially supported at rootkit.nl but for ease I wanted a yum available rpm 
There are somethings that you just never get round to, my nagios box was still running whitebox linux, and I’ve finally gotten round “upgrading” it to CentOS… yeah ok, upgrade is arguable, but you get my point.
First off a warning: Don’t do this ! All the documentation, for CentOS, RHEL, Fedora, any redhat linux all say, clean installs are the best way, and upgrades are not advised…. therefore I offer no support or warranty that this will work, in fact, I you advise you to read this post, but step away from your consoles !
But, if you think it might be a laugh, the centos documentation is a bit old, and not 100% correct, so here is what I did. First up (as root – obviously), clear out your yum cache,and install the CentOS gpg key.
yum clean all rpm --import http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-4
Next, install some base centos packages, take not that some need to be forced on
rpm -Uvh --nodeps http://mirror.centos.org/centos/4.4/os/i386/CentOS/RPMS/centos-release-4-4.2.i386.rpm rpm -ivh http://mirror.centos.org/centos/4.4/os/i386/CentOS/RPMS/python-elementtree-1.2.6-4.2.1.i386.rpm rpm -ivh http://mirror.centos.org/centos/4.4/os/i386/CentOS/RPMS/python-sqlite-1.1.7-1.2.i386.rpm rpm -ivh http://mirror.centos.org/centos/4.4/os/i386/CentOS/RPMS/sqlite-3.3.3-1.2.i386.rpm rpm -Uvh --force http://mirror.centos.org/centos/4.4/os/i386/CentOS/RPMS/python-urlgrabber-2.9.8-2.noarch.rpm rpm -Uvh --nodeps http://mirror.centos.org/centos/4.4/os/i386/CentOS/RPMS/yum-2.4.3-1.c4.noarch.rpm
finally remove the whitebox rpm db.
rpm -ev rpmdb-whitebox
Move any “whitebox” mirrors still in /etc/yum.repos.d and
yum install rpmdb-CentOS
Once you have that sorted, you can complete the upgrade with
yum update reboot
& cross your fingers
If you come across the following warnings while using yum: Warning, could not load sqlite, falling back to pickle , I found…
yum install python-sqlite
Fixed the problem. And there we have it, all my boxes are now running CentOS – yay – just in time to look at the CentOS 5 upgrade
Dependency Problems ?
If a whitebox rpm is newer than the CentOS one, it won’t get upgraded, this might cause problems when installing new packages via yum. To solve the problem download the rpm manually from http://www.centos.org/modules/tinycontent/index.php?id=13 and force an upgrade
rpm --force -Uvh Something-CentOS.rpm
UPDATE: If you’re using something like Root Kit Hunter, you will notice a load of md5 hashes fail, these are whitebox rpm’s that didn’t need upgrading, to correct the problem you need to replace these with CentOS versions.. example rkhunter output:
/sbin/init [ BAD ]
Find which rpm, init belongs to
# rpm -q --whatprovides /sbin/init SysVinit-2.85-34.3
and upgrade it
wget http://www.mirrorservice.org/sites/mirror.centos.org/4.4/os/i386/CentOS/RPMS/SysVinit-2.85-34.3.i386.rpm rpm --force -Uvh SysVinit-2.85-34.3.i386.rpm
Following a request I’ve rebuilt a later tripwire rpm (2.4.1.1); I think at this point it would be prudent to point out that the rpms found here are not maintained, and I do not offer any kind of support – you use them at your own risk – but you’re welcome to make requests !
My Yum repo has also been updated, config file here 