Bernard,
I probably wasn't too clear in my explanation. While I apply the
updated RPM's to the image, I also apply them directly to the nodes with
a cexec rpm -Uvh ...., followed by a cexec lilo -v. Oh, I just
remembered, I also have to create a initrd file or two. Systemconfig
calls them sc-initrd-<release>.gz, which is different to RedHat
standard.
The update I do to the image is only to handle any new nodes that I may
need to create. I also replace the new RPM file in /tftpboot/rpm so any
new creations I do will pick it up. I haven't had any problems with the
image directory after this, provided the systemconfig.conf file I
mentioned is keep up to date, and I do a network reload of the whole
image (hence the earlier step of doing a cexec rpm to already configured
nodes).
How are you pushing the images out to the nodes? I've tried cpushimage
once, and it totally messed things up, mainly by not running the things
that systemconfigure does and deleting some of the essential files (e.g.
lilo.conf!).
Frank
On Wed, 2003-10-08 at 03:14, Bernard Li wrote:
> I have previously tried to update the systemimager image using this
> method - chroot to /var/lib/systemimage/images/<image> and then run
> kernel rpm updates there - the problem is, I suppose is that there is no
> /etc/fstab in the image directory structure (this is because
> systemimager creates it on the fly).
>
> This results in a kernel image that didn't quite work when you push it
> to clients (it causes a kernel panic). That is why I opt to do the
> kernel update AFTER I've pushed the images out to the clients.
>
> You might want to confirm this.
>
> Thanks,
>
> Bernard
>
> Frank Crawford wrote:
>
> > On Tue, 2003-10-07 at 03:29, Bernard Li wrote:
> >
> >>Hi Julia:
> >>
> >>I have recently updated my Oscar cluster from the RedHat 9.0 stock
> >>kernel to 2.4.20-20.9. And here's what I did:
> >>
> >>1. Use cexec to rpm install the kernel
> >>2. Modify /boot/grub/menu.lst accordingly (we use grub so you should
> >>edit the appropriate boot list for lilo)
> >>3. Push the menu.lst to the nodes
> >>4. Reboot and the new kernel should boot up.
> >>
> >>We haven't quite figured out how to update the kernel for the image though.
> >
> >
> > To update the image you need to run:
> >
> > rpm --root /var/lib/systemimager/image/X -Uvh Y.rpm (where X is your
> > image name and Y is the rpm file)
> >
> > and then probably hand edit
> > /var/lib/systemimager/image/X/etc/systemconfig/systemconfig.conf
> > with the correct names (it is fairly obvious). This file is run to
> > configure the nodes after image install. (Note, you can also make
> > changes in the override directory instead.)
> >
> > Note: this is all for OSCAR 2.3, but I think that the systemimager stuff
> > in earlier OSCAR versions was similar.
> >
> >
> >>Cheers,
> >>
> >>Bernard
> >
> >
> > Frank
> >
> >
> >>Julia Wang wrote:
> >>
> >>
> >>>Hi, All:
> >>>
> >>>I have an existing OSCAR cluster (Oscar 2.1 on RH 7.3). I want to
> >>>update the kernel to 2.4.20-20.7smp. I don't know the proper steps to
> >>>update the computing nodes. Thank you in advance for your help.
> >>>
> >>>Regards,
> >>>Julia
> >>>
> >>>
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