Il est désormais possible de démarrer des noyaux personnalisés et même des systèmes d'exploitation alternatifs sous votre instance Linode en utilisant pv-grub - un portage du bootloader GRUB dans le noyau mini-os de Xen . Essentiellement, votre Linode démarre dans le noyau pv-grub, recherche votre menu.lst et les fichiers de noyau associés, puis exécute votre noyau.
Bien que cette fonctionnalité semble très intéressante, elle est destinée aux bricoleurs. Nous ne fournirons aucun support pour les configurations personnalisées ou les systèmes d'exploitation alternatifs au-delà du support de pv-grub lui-même. Nous vous recommandons toujours d'utiliser nos noyaux, à moins que vous n'ayez des besoins très spécifiques ou que vous souhaitiez simplement vous amuser.
Il y a un article wiki pour vous aider à démarrer, et même un autre article qui explique comment libérer le BSD sur Linode.
Commentaires (9)
[…] Posted on December 24, 2008 – 8:19am I reckon the logo on Linode Wiki needs a change. Via Linode’s latest blog post, it is now possible to roll your own operating system with Linode’s pv-grub support. […]
[…] Linode Blog » Custom kernels with pv-grubThis would be enough to run selinux or app-armor on linode now. […]
How stable is that? Is it stable enough for a production system?
How stable is pv_grub? pv_grub boots your own kernel, and then it’s done, so it has little to do with stability. I think the question is: how stable the custom kernel that you’ve provided is.
Well, the reason I’m asking is because I have experienced stability problems with vmware’s CONFIG_VMI kernel option in an otherwise very stable kernel.
In case anyone else is thinking of going down the same path I tried, the CentOS 5.2 kernel-xen package wasn’t built with all of the options specified on the linked wiki page, so it won’t work with pv-grub without a custom compile (unless I did something wrong).
That’s great news. I’m going to play around with this a bit.
I suspect I won’t be able to get it to do what I ultimately want: boot an OpenSolaris (2008.11) instance. I’ve been able to get OpenSolaris running well on XenServer, but I can’t use pv_grub. The root filesystem is ZFS, so the script can’t reach in and pull out the menu.lst file unless it knows how to deal with that FS.
In my experience, I have to use the PV-args and PV-kernel parameters in XenServer to make it work (see my website for details). If there’s a way that you can expose those configuration items, that would be awesome.
I recently switched to Linode because of this. I’ve been running Gentoo with my own custom kernel for a few days now and it’s working great. This feature is awesome.
I’m in the process of switching from slicehost because of this.