Re: [Users] Pxeboot

-----Original Message----- From: Mike Burns [mailto:mburns@redhat.com] Sent: Wednesday, February 08, 2012 6:53 PM To: Li, David Cc: Perry Myers; users(a)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@redhat.com] > >Sent: Wednesday, February 08, 2012 4:31 PM > >To: Li, David > >Cc: Perry Myers; users(a)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@redhat.com] > >> >Sent: Wednesday, February 08, 2012 3:27 PM > >> >To: Li, David > >> >Cc: Perry Myers; users(a)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@redhat.com] > >> >> >Sent: Wednesday, February 08, 2012 2:54 PM > >> >> >To: Mike Burns > >> >> >Cc: Li, David; users(a)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(a)ovirt.org > >> >> http://lists.ovirt.org/mailman/listinfo/users > >> > > >> > > > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users