Hi all,
Is it possible to reload the dom0 / host node's kernel with a newer one, without rebooting the server? I know kexec can do something like this for security patches, but I don't know much about kexec, and I don't want to mess up a production server either. So, has anyone done something like this before? I need to load a new kernel for one of the domU's iptables to work, but don't want to reboot the whole server and cause downtime for the other domU's.
-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Rudi Ahlers Sent: Wednesday, December 02, 2009 2:23 PM To: CentOS mailing list Subject: [CentOS] (re)load new kernel with rebooting host node?
Hi all,
Is it possible to reload the dom0 / host node's kernel with a newer one, without rebooting the server? I know kexec can do something like this for security patches, but I don't know much about kexec, and I don't want to mess up a production server either. So, has anyone done something like this before? I need to load a new kernel for one of the domU's iptables to work, but don't want to reboot the whole server and cause downtime for the other domU's.
---
You're a lot better off go over to the Linux Kernel Devel site. AFIK kexec can only do this on real hardware. I think your better off scheduling downtime for the server. Although kexec does have a site page.
John
On Wed, Dec 2, 2009 at 10:28 PM, JS jses27@gmail.com wrote:
You're a lot better off go over to the Linux Kernel Devel site. AFIK kexec can only do this on real hardware. I think your better off scheduling downtime for the server. Although kexec does have a site page.
John
John, that's what I want todo :) I want to reload the kernel on the "real hardware" server
On Wed, Dec 2, 2009 at 2:22 PM, Rudi Ahlers Rudi@softdux.com wrote:
Hi all,
Is it possible to reload the dom0 / host node's kernel with a newer one, without rebooting the server? I know kexec can do something like this for security patches, but I don't know much about kexec, and I don't want to mess up a production server either. So, has anyone done something like this before? I need to load a new kernel for one of the domU's iptables to work, but don't want to reboot the whole server and cause downtime for the other domU's.
-- Mathew S. McCarrell Clarkson University '10
mccarrms@gmail.com mccarrms@clarkson.edu 1-518-314-9214
-
JS -
Mathew S. McCarrell -
Rudi Ahlers -
Rudi Ahlers