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@suse.com From: Andy
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"
To: 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:
To: 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@karsites.net, suse-security@suse.com From: Andy
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
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