Re: [SLUG] automated sequential boot of multiple machines

From: Mike Branda (mike@wackyworld.tv)
Date: Thu Nov 17 2005 - 14:13:04 EST


On Wed, 2005-11-16 at 17:47 -0500, Logan Tygart wrote:
> On Wed, 2005-11-16 at 16:32 -0500, Mike Branda wrote:
> > Hey all,
> >
> > I figure I'll put this out there. I'm starting to think of a way that I
> > can bring machines up here in sequence when the power is out for more
> > than the designated run time of the backups.
>
> One method, given a serious power outage and not wanting to reboot
> machines in a particular order after power is restored, would be to set
> the timeout variable in grub/lilo to different amounts of time. Set a
> short amount of time for the machine you want to boot first, and a
> greater period for each machine that has to boot up afterward.
>
> Somewhat of an Occam's razor approach.
>
> Logan

I wouldn't mind this approach so much other than the fact that sometimes
SuSE forces a fsck on the disks if the last time it was run was more
than a certain period of days (preset). In that case the normal
allotted timeout for the next machine to boot would be too short. I'm
not sure the consistent longterm reliability of this approach would be
feasable. I think the init based service check approach mentioned by
Ian is a little more reliable.

Thanks for the suggestion though. I forgot about the grub timeout
option.

Mike Branda Jr.

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