[CentOS] SELinux messages after compiling new kernel

Sergio Belkin sebelk at gmail.com
Thu Aug 27 18:50:11 UTC 2009

2009/8/27 Johnny Hughes <johnny at centos.org>:
> Sergio Belkin wrote:
>> 2009/8/27 Filipe Brandenburger <filbranden at gmail.com>:
>>> Hi,
>>> On Thu, Aug 27, 2009 at 12:46, Sergio Belkin<sebelk at gmail.com> wrote:
>>>> Jim, thanks for the suggestion, but Firstly: I need a newer kernel in
>>>> order to get IO statistics from tools like atop, pidstat, etc. And
>>>> secondly and most important: my boss wants that :)
>>> Then CentOS is not what you want.
>>> There is a reason why RHEL/CentOS does not ship with the latest kernel
>>> (and other components) and backports fixes instead. It's not trivial
>>> to make different versions of these components work together. If you
>>> try to replace the kernel (or other core components) you will see how
>>> painful it is. In fact, you started to see it already. You may try to
>>> continue to go that way, but I doubt anyone in this list will be able
>>> to help you there... you're pretty much on your own.
>>>> So I'd be glad to hear other kind of solution :)
>>> Look at the latest Fedora or Ubuntu or another one of the "cutting
>>> edge" distributions that ship with more recent versions of components.
>>> Or ask yourself (or your boss) *WHY* you think you really need a later
>>> version of a certain component. What is your real problem? Is it
>>> support to a certain hardware? Is it network related? Is it
>>> (unfounded) fear that the kernel in CentOS might be vulnerable? It
>>> might be possible to solve your problem using CentOS in another way,
>>> if you come back to the list with the real problem we might be able to
>>> help you better.
>>> HTH,
>>> Felipe
>> I've just explained the reason why I've compiled.
> Let me try it a different way.
> The current kernel used by Red Hat in RHEL 4 is a 2.6.9-x kernel and it
> has 1973 patches.  The one currently in use in RHEL 5 is a 2.6.18-x
> kernel with 2882 patches.
> Many packages are compiled against kernel-headers and depend on the proc
>  structure that is there.
> SELinux is just one of many issues you will have if you try to use a
> main line kernel on CentOS.  You will need to have several of the Red
> Hat patches (modified to work with the new kernel tree) incorporated in
> order to use a newer kernel on CentOS.
> If you absolutely have to have a newer kernel (you should not do this
> ... but hey, it IS your machine) ... then instead of trying to use a
> main line kernel, instead try to use the latest one from here:
> ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/RHEMRG/SRPMS/
> This kernel has been tested for use with RHEL-5 and is 2.6.24-x.
> You still might have issues, but they should be far fewer than running a
> main line kernel on CentOS.
> Would you, if you boss told you he wanted you to, try to make the
> Windows Vista system files run on Windows 95?

Of course I wouldn't it. I think that the comparison has little to do.
Windows it's very different from Linux. MS it's product developed by
an only company and closed souce. I think that the difference from
using some distro with different kernel is far smaller that running
"Vista" apps on Windows 95. Of course I don't expect support in the
sense that someone solve my problems, I'm only was asking

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