Re: [cobalt-users] RaQ3 stopped responding

[Jeff Lasman <jblists@xxxxxxxxxxxxx>]

Albert Csaba wrote:

> Thank you for your answer.
> As it turned out, after the 4th reboot they emailed me
> that a fan is not working correctly and they are
> replacing it. Since then it works fine.

That may or may not have been the entire problem; our systems, which run
in extremely cold data rooms, can run with only one fan; we had one
system run with no fans for a while, until on-order fans arrived.  But
as I said, our data rooms run pretty cold.

> Unfortunately, I can't install chkrootkit because of
> this error (which I get when trying to "make" most of
> the programs):
> 
> [root@ns chkrootkit-0.35]# make sense
> gcc -DHAVE_LASTLOG_H   -o chklastlog chklastlog.c
> In file included from /usr/include/signal.h:300,
>                  from chklastlog.c:41:
> /usr/include/bits/sigcontext.h:28: asm/sigcontext.h:
> No such file or directory
> make: *** [chklastlog] Error 1

Hmmm... I've never seen this happen on any other RaQ3.  Are you
up-to-date with your updates?  Does anyone know if there's a hack out
that disables the ability to install chkrootkit?

> I'm checking for a system attack the commands from
> knowledgebase, which didn't pointed out any attack.
> 
> And for cat /proc/meminfo I'm getting this, which I
> guess is normal:
> 
>        total:    used:    free:  shared: buffers:
> cached:
> Mem:  31444992 26763264  4681728 34324480  1187840
> 12599296
> Swap: 134692864 23658496 111034368
> MemTotal:     30708 kB
> MemFree:       4572 kB
> MemShared:    33520 kB
> Buffers:       1160 kB
> Cached:       12304 kB
> SwapTotal:   131536 kB
> SwapFree:    108432 kB

I'm presuming your RaQ3 has only 32 megabytes of memory.  Let's just
nicely say that's not enough.

And only four megabytes of free memory; that's not enough either.  We
reboot our systems when MemFree gets that low, unless it goes back up
again within a few minutes.

I know that rebooting shouldn't be necessary, it's a good way to get
memory back up.

Check this again immediately after a reboot, and see what the MemFree
line says.

Jeff
-- 
Jeff Lasman <jblists@xxxxxxxxxxxxx>
Linux and Cobalt/Sun/RaQ Consulting
nobaloney.net, P. O. Box 52672, Riverside, CA  92517
voice: +1 909 778-9980  *  fax: +1 909 548-9484