[Gluster-users] Netboot / PXE-Boot from glusterfs?
kirchy at gmx.de
Thu Jun 17 10:00:31 UTC 2010
Am 17.06.2010 11:37, schrieb Daniel Maher:
> On 06/17/2010 11:08 AM, Jan wrote:
>> - enables (diskless) Linux-Clients to boot over the network (debian,
>> some "real servers", some virtual ones)
>> Is this possible with glusterfs? Has anybody tried it? I understand it
>> is not that easy with a FUSE-filesystem, and there does not seem to be a
>> out-of-the-box solution, but has anybody tried it, maybe building custom
> That's not what Gluster is for, really. Fundamentally, Gluster is a
> networked file system, and while it is highly malleable within that
> context, it's not supposed to do anything other than provide a
> networked file system.
> If you want to do network boots you'll need to look into another
> solution to provide that functionality. That said, in theory there's
> nothing stopping you from building Gluster into your initialisation
> image, then using it once your systems are booted and operational.
I could easily setup netboot the traditional way using NFS, but I would
not have any failover/ha for that. As I understand, NFS on the gluster
storage platform (gsp) does not provide failover in case the first
server crashes. Failover-functionality for some data being on glusterfs
won't help when the root directory is "gone".
glusterfs sounds very promising, it seems to be a great fileserver for a
bunch webservers and other shared/redundant data being used on many
servers, it would make life much easier for me.
I (ideally) try to find a way to have such a shared file area, the
netboot-server and ideally a few iscsi-luns on the same servers.
It is a kind of stupid to have a separate nfs-server just for serving a
total of 1gb of files for some diskless servers to be able too boot
(actually, it would have to be 2 servers again, with failover etc..
doesn't make sense that all diskless servers hang/crash when the nfs
server crashes...). and I only need very few iscsi-luns with a total of
10-15gb, not doing much io.
for NFS-netboot, I think there should be a way to use glusterfs instead.
It's almost the same from the client point of view, the only problem ist
for an iscsi/drbd cluster, it is something totally different. I'm not
sure if it makes sense to put that on the same server. If the gluster
storage platform is a simple, stable solution that works out of the box,
i'd probably prefer that and set up a seperate iscsi-cluster.
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