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Re: Large install and roll-out
Re: Large install and roll-out
Mon, 11 Mar 2002 10:48:01 +0100
This looks really handy. Do You compile amd build Your own kernels, or
do You use pre-made images off Debian?
I see that apt-get is available for RedHat, with lots of examples. Would
a Debial kernel-image work at all on a RedHat Linux system?
On (11/03/02 09:28), Adrian Phillips wrote:
> To: Rune Mossige <email@example.com>
> Cc: firstname.lastname@example.org
> Subject: Re: Large install and roll-out
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> Date: 11 Mar 2002 09:28:20 +0100
> >>>>> "Rune" == Rune Mossige <firstname.lastname@example.org> writes:
> Rune> In about 4-6 weeks, we will install a 128-node dual-CPU
> Rune> Linux cluster, running RedHat Linux 7.2, and I'd like to
> Rune> install cfengine on all those hosts at the same time....
> Rune> I guess that I am not the first, so I'd like to hear how
> Rune> others have done a similar thing.
> Rune> One think that I noticed, is that the cfengine install docs
> Rune> advises to first install cfenvd, and let it run for a week,
> Rune> before cfkey is run to generate the keys....this is not
> Rune> going to work for us, as we need to start using cfengine
> Rune> asap.
> I don't even run cfenvd and it works. Note I would assume this has got
> more to do with OSes that don't have /dev/random, but I am no security
> Rune> Also, after this initial rollout, we will need to update the
> Rune> kernels on all hosts very early after the initial
> Rune> bootstrap. How do others update a large number of RedHat 7.2
> Rune> machines with a new kernel? Is it OK to compile on one host,
> Rune> and then just tar up the /lib/modules and /boot directories,
> Rune> and re-run lilo on each host after untarring?
> Well, I don't know Redhat, but with my Debian machine I have the
> following lines in one of conf. files :-
> smp_up = ( up )
> kernel_image = ( kernel-image-2.2.20+up )
> smp_up = ( smp )
> kernel_image = ( kernel-image-2.2.20+smp )
> # Upgrade the kernel if specifically requested
> # Make sure grub is updated as well as update-grub
> # didn't get the kernel order right in an earlier
> # version
> "/usr/bin/apt-get -q -q -y install grub $(kernel_image)"
> Then I run cfagent -Dupgrade_kernel. I don't do this automatically
> because I don't like automatic kernel upgrades but there would be no
> problem removing the upgrade_kernel check then apt-get would be run
> each time (although, of course it doesn't do anything if the latest
> kernel is installed). The difference maybe that apt is setup to pickup
> some packages from a local spool on a central server. If I wanted to
> do automatic upgrades then I could just compile up a new kernel, copy
> it to the spool on the server and next cfagent run would do the
> upgrade. Does Redhat have something similar (I understood that
> somebody had ported apt to support rpm which maybe one way of doing
> Adrian Phillips
> Your mouse has moved.
> Windows NT must be restarted for the change to take effect.
> Reboot now? [OK]
> Help-cfengine mailing list
(-: Hiroshima 45, Chernobyl 86, Windows 95 :-)
Our ultimate goal is to make overloaded systems appear to be idle.
High performance, High reliability, Low cost -------- Pick any two.
Rune Mossige, Systems Support Engineer, WesternGeco, Stavanger
Tel: (+47)51946869 Mobile:(+47)90871024
Re: Large install and roll-out, Marc Alvidrez, 2002/03/11
Re: Large install and roll-out, John Valdes, 2002/03/11