[asterisk-users] Centos kernel 34 vs. 42?

[Robert Jenkins]

Hi,

I like Centos as a basic platform, but I always then upgrade the kernel to
the latest stable release from kernel.org

The latest ones are using Centos 4.4 x86_64 with kernel 2.6.18

For simplicity, I always start with the .config from the original Centos
kernel.
My install sequence is:

Untar the kernel source in /usr/src/kernels

ln -s /usr/src/kernels/linux-2.6.18 /usr/src/linux (changing 2.6.18 to the
version in use...)

cd to /usr/src/linux & do 'make mrproper' to clean out any leftover garbage.
Older kernel versions often would not build if you missed this step, so I do
it by habit now.

Copy the .config file from the last installed Centos kernel directory (under
/usr/src/kernels/2.6.xxxx) to /usr/src/linux

Still in /usr/src/linux, do 'make oldconfig' and just press enter all the
way through.
This should give you a new kernel config matching the Centos distribution.

(If you need anything other than the standard Centos kernel config, make
changes here)

Then do:-
make
make modules
make modules_install
make install
 
If everything builds OK, reboot and get ready to select the new kernel as
the Grub menu appears.

If it all boots OK, you can edit /etc/grub.conf and change the default line
to 0 so the new kernel is booted in future.




> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com 
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of 
> Bryan J. Smith
> Sent: 14 October 2006 10:48
> To: asterisk-users at lists.digium.com; asterisk-users at lists.digium.com
> Subject: Re: [asterisk-users] Centos kernel 34 vs. 42?
> 
> From:  Remco Barendse 
> > Possibly, but I would have to start worrying about kernel configs, 
> > compiling the lot and solving the problem of the box no 
> longer being 
> > able to boot the kernel :)
> 
> You'd be better off starting with a Fedora kernel.  
> Unfortunately RHEL/CentOS 4 is based on Fedora Core 3 which 
> has been tagged legacy for quite some time now.  The last 
> kernel version was around 2.6.13 or so IIRC.  And trying to 
> go with a Fedora Core 5, 6 Test or Development (aka Rawhide) 
> might not build because GCC has been upgraded to 4.0/4.1 from 3.4.
> 
> > I looked for CentOS repo's but cannot find one that will 
> throw a plain 
> > vanilla kernel my way.
> 
> And you're not likely to find one.  RHEL/CentOS is based on a 
> set kernel version with minimal changes, backporting required 
> fixes/security updates only as necessary.  Red Hat's focus 
> with RHEL is 7 years of SLAs with no ABI changes, period - 
> unlike Fedora Core (or Red Hat Linux before it for that 
> matter - which did co-exist with RHEL for 2 years before the 
> trademark change).
> 
> > There's only a centos plus kernel but these are basically 
> the same as 
> > the original kernels just with some filesystems enabled.
> 
> As I hinted above, the changes are just significant enough 
> that Red Hat only backports, to the anal power when it comes 
> to RHEL.  And although  Fedora Core/Development would be a 
> "good start" for an updated kernel (far vanilla where 
> countless things would break), there is so much that has 
> changed in the toolchain and user-space of Fedora Core 4-6 
> that offers a 2.6.16+ release that many people probably 
> haven't bothered.  Especially since most people run 
> RHEL/CentOS for its longevity and unchanging ABI/backports 
> approach to an almost anal-level.
> _______________________________________________
> --Bandwidth and Colocation provided by Easynews.com --
> 
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users
>