[Users] Pxeboot

[Mike Burns]

On Wed, 2012-02-08 at 17:11 -0800, Li, David wrote:
> Ok, I built an iso out of archipel and pxebooted it with stateless option.  Now I got a "localhost" login prompt.  Any idea what should I put in as user/pwd?
> David

You will need to pass a password in on the command line as well

adminpw=<hashed_password>

You can generate the hashed password using:

$ openssl passwd

Assuming the password was abc123

$ openssl passwd abc123
tKrQfufCbosr6

adminpw=tKrQfufCbosr6

Mike

> 
> >-----Original Message-----
> >From: Mike Burns [mailto:mburns at redhat.com]
> >Sent: Wednesday, February 08, 2012 4:31 PM
> >To: Li, David
> >Cc: Perry Myers; users at ovirt.org
> >Subject: RE: [Users] Pxeboot
> >
> >On Wed, 2012-02-08 at 15:43 -0800, Li, David wrote:
> >> Ok, I think we are on the same page now regarding stateless node.  It
> >> looks like the achipel diff you just pulled in might be able to do
> >> this. But I can't quite make it out what the kernel option should be.
> >> Is it "stateless=1"?
> >>
> >
> >stateless=1 or just stateless, both will work.
> >
> >
> >> David
> >>
> >> >-----Original Message-----
> >> >From: Mike Burns [mailto:mburns at redhat.com]
> >> >Sent: Wednesday, February 08, 2012 3:27 PM
> >> >To: Li, David
> >> >Cc: Perry Myers; users at ovirt.org
> >> >Subject: Re: [Users] Pxeboot
> >> >
> >> >On Wed, 2012-02-08 at 15:19 -0800, Li, David wrote:
> >> >> Perry,
> >> >>
> >> >> I am glad you brought this up.
> >> >> I 'd be perfectly happy to run the root fs entirely in RAM. In fact
> >> >> that would
> >> >be ideal for me. It's just I am not quite sure how to use pxeboot to
> >> >achieve this.
> >> >>
> >> >> I am doing a test now using the tftpboot files created from the iso.
> >> >> As far as I see, the kernel boot options (pxelinux.cfg/default) has:
> >> >>
> >> >> root=live:/ovirt-node-image-2.2.2-1.1.fc16.iso
> >> >>
> >> >> With this I can only pxeboot to the intall screen.  What should I
> >> >> use to let the
> >> >kernel mount the root fs in memory? Something like root=/dev/ram0?
> >> >>
> >> >> David
> >> >
> >> >It's not currently possible with ovirt-node.  That's the whole
> >> >stateless feature that we outlined.  Once we actually have it
> >> >implemented, it will be something along the lines of adding "stateless" to
> >the kernel commandline.
> >> >
> >> >Mike
> >> >>
> >> >>
> >> >> >-----Original Message-----
> >> >> >From: Perry Myers [mailto:pmyers at redhat.com]
> >> >> >Sent: Wednesday, February 08, 2012 2:54 PM
> >> >> >To: Mike Burns
> >> >> >Cc: Li, David; users at ovirt.org
> >> >> >Subject: Re: [Users] Pxeboot
> >> >> >
> >> >> >On 02/08/2012 05:03 PM, Mike Burns wrote:
> >> >> >> On Wed, 2012-02-08 at 13:46 -0800, Li, David wrote:
> >> >> >>> Mike,
> >> >> >>>
> >> >> >>> If I understand this correctly, today I should be able to
> >> >> >>> pxeboot and nfs mount the root fs from a remote server.  Apart
> >> >> >>> from setting up the pxe stuff, I 'd have to populate the ovirt
> >> >> >>> node root fs on the server
> >> >> >>> - perhaps steal it from a disk install.  In other words I am
> >> >> >>> concerned about the point from which the kernel starts to
> >> >> >>> execute /init script (in the initramfs) to the point /init is
> >> >> >>> able to mount the final root fs from a remote server.
> >> >> >>
> >> >> >> No, there is no way to set this up currently in ovirt-node.  You
> >> >> >> could install using a remote iscsi lun if you have a hardware
> >> >> >> iscsi HBA, but there isn't a way to mount a remote nfs share as the
> >root fs.
> >> >> >>
> >> >> >> Supporting a remote NFS share as the root fs isn't even
> >> >> >> something that requested as an RFE at this point or on the
> >> >> >> roadmap as far as I'm aware.
> >> >> >>
> >> >> >> It sounds like what you're really looking for is a shared root
> >> >> >> fs that multiple hosts could use.  This is something that we
> >> >> >> will probably look into eventually, but it's not on the immediate
> >roadmap.
> >> >> >
> >> >> >Given that the rootfs of oVirt Node is fairly small and in a truly
> >> >> >stateless environment would just run out of system RAM, there's no
> >> >> >real reason to try to do a shared NFS based rootfs.  It's an
> >> >> >unnecessary complication I think, if the end goal is to move to
> >> >> >truly
> >> >stateless.
> >> >> >
> >> >> >For larger systems where the rootfs is on the order of GB's,
> >> >> >shared root may make more sense.
> >> >> _______________________________________________
> >> >> Users mailing list
> >> >> Users at ovirt.org
> >> >> http://lists.ovirt.org/mailman/listinfo/users
> >> >
> >>
> >
> 
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