[Users] Pxeboot

[Li, David]

Mike,

I added adminpw as a kernel option. After boot,
I tried "admin/abc123" and "root/abc123" but not able to login. 
Any idea?

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.
>> >> >> _______________________________________________
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>> >> >> Users at ovirt.org
>> >> >> http://lists.ovirt.org/mailman/listinfo/users
>> >> >
>> >>
>> >
>>
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