Mailinglist Archive: opensuse-security (232 mails)

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Re: [suse-security] Strange server crash
  • From: suse@xxxxxxxxxxxx
  • Date: Mon, 17 Oct 2005 14:30:43 +0100 (BST)
  • Message-id: <Pine.LNX.4.61.0510171426360.6726@xxxxxxxxxxxx>

How much disk space do you have on /tmp?

Are you allowing users to upload files that could use all
your available /tmp disk space?

Also is it a dual CPU machine, or quad CPU's?

Have you go the /var/log/messages, /var/log/boot,
/var/log/warn files at the time of the crash?

Regards - Keith

On Mon, 17 Oct 2005, Andy wrote:

> To: suse-security@xxxxxxxx
> From: Andy <frum@xxxxxxxxx>
> Subject: Re: [suse-security] Strange server crash
>
> Ok, yesterday happend another crash...
>
> This is the free result:
>
> Sun Oct 16 22:05:00 CEST 2005
> total used free shared buffers cached
> Mem: 1003 963 40 0 71 691
> -/+ buffers/cache: 200 803
> Swap: 1027 19 1008
> Total: 2031 982 1048
> Sun Oct 16 22:10:00 CEST 2005
> total used free shared buffers cached
> Mem: 1003 966 37 0 71 691
> -/+ buffers/cache: 203 800
> Swap: 1027 19 1008
> Total: 2031 985 1045
> Mon Oct 17 08:20:00 CEST 2005
> total used free shared buffers cached
> Mem: 1003 454 549 0 63 247
> -/+ buffers/cache: 143 860
> Swap: 1027 0 1027
> Total: 2031 454 1577
>
>
> I restarted the server now with ACPI=off. Untill this in HTOP I had 4
> CPU's listed (I have a dual CPU server) and now the CPU 3 and 4 are blue
> and almost always at 100% or nan. The CPU 1 and 2 are normal.
> It this normal???
>
> I hope both Cpu's are working....
>
> Regards,
> Andy.
>
> ----- Original Message ----- From: "Andy" <frum@xxxxxxxxx>
> To: <suse-security@xxxxxxxx>
> Sent: Thursday, October 13, 2005 9:35 PM
> Subject: Re: [suse-security] Strange server crash
>
>
> > Ok, I log the free memory in a log file to see what happens. I'll
> > keep you in touch.
> >
> > > The next peice is kernel panics. Type: cat /proc/sys/kernel/panic
> > > What's the output?
> > cat /proc/sys/kernel/panic
> > 0
> >
> > Andy.
> >
> > ----- Original Message ----- From: <suse@xxxxxxxxxxxx>
> > To: <suse-security@xxxxxxxx>
> > Sent: Thursday, October 13, 2005 6:54 PM
> > Subject: Re: [suse-security] Strange server crash
> >
> >
> > >
> > > Could it be a DOS attack from somewhere ?
> > >
> > > Not nit-picking but if you do 'free -m -s5'
> > >
> > > that will return the memory usage in MB's - a bit easier to
> > > understand I
> > > think ;-).
> > >
> > > Keith
> > >
> > >
> > > On Thu, 13 Oct 2005, Andy wrote:
> > >
> > > > To: suse@xxxxxxxxxxxx, suse-security@xxxxxxxx
> > > > From: Andy <frum@xxxxxxxxx>
> > > > Subject: Re: [suse-security] Strange server crash
> > > >
> > > > I will respond to all:
> > > >
> > > > To restart the server we had to do a hard reboot.
> > > >
> > > > We have 1G Ram, 1G Swap space.
> > > > There is plenty(more GBs) of space on the hard disks. On all
> > > > partitions(except /boot).
> > > >
> > > > The hang-up occurs randomly... sometimes at 3 weeks,
> > > > sometimes at 2 months, sometimes at 1 month.
> > > >
> > > > free -s -m5:
> > > > total used free shared buffers
> > > > cached
> > > > Mem: 1027964 958260 69704 0
> > > > 45416 729952
> > > > -/+ buffers/cache: 182892 845072
> > > > Swap: 1052248 90976 961272
> > >
> > > --
> > > Check the headers for your unsubscription address
> > > For additional commands, e-mail: suse-security-help@xxxxxxxx
> > > Security-related bug reports go to security@xxxxxxx, not here
> > >
> > >
> > >
> >
> >
> > --
> > Check the headers for your unsubscription address
> > For additional commands, e-mail: suse-security-help@xxxxxxxx
> > Security-related bug reports go to security@xxxxxxx, not here
> >
> >
> >
>
>
> --
> Check the headers for your unsubscription address
> For additional commands, e-mail: suse-security-help@xxxxxxxx
> Security-related bug reports go to security@xxxxxxx, not here
>
>

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