[Users] Pxeboot

[Mike Burns]

On Thu, 2012-02-09 at 07:06 -0800, Li, David wrote:
> Mike,
> 
> I added adminpw as a kernel option. After boot,
> I tried "admin/abc123" and "root/abc123" but not able to login. 
> Any idea?
> 

Are there any errors in your build or boot logs?  

Mike

> David
> 
> 
> >-----Original Message-----
> >From: Mike Burns [mailto:mburns at redhat.com]
> >Sent: Wednesday, February 08, 2012 6:53 PM
> >To: Li, David
> >Cc: Perry Myers; users at ovirt.org
> >Subject: Re: [Users] Pxeboot
> >
> >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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> >
> 
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