weird errors

Ranjan_2 — Sun, 19 May 2002 06:16:41 GMT

While booting up my Linux box today I got the following error

messages; Enabling swap space:

sh:/bin/grep:too many open files in system

sh:/bin/grep:too many open files in system

sh:/bin/grep:too many open files in system grep:error while loading shared libraries:libc.so.6:cannot open

shared object file:Error 23 After I logged on, nothing seemed to be out of place until I tried

the

top command which gave the following error top: error while loading shared libraries libncurses.so.4:cannot open

shared object file :no such file or directory Also if I try using the locate command i get this error message:

locate :usr/var/locatedb :no such file or directory When i tried dmesg the only messages i got were the following:

sh:/bin/grep:too many open files in system

sh:/bin/grep:too many open files in system

sh:pipe error:too many open files in system Is there anyway I can repair my system? I suspect my system could have been attacked yesterday night.I got

several beeps each showing a message message from localhost.localdomain..........

localhost I checked my /var/spool/mail and it showed this among other messages Content-Type: message/rfc822 Return-Path:

Received: (from root@localhost)

by localhost.localdomain (8.11.6/8.11.6) id g4IAK5A03878

for bare@ubersource.net; Sat, 18 May 2002 04:20:05 -0600

Date: Sat, 18 May 2002 04:20:05 -0600

From: root

Message-Id: <200205181020.g4IAK5A03878@localhost.localdomain>

To: bare@ubersource.net

Subject: Tuxkit1.0 export DISPLAY=Skul1101; telnet # localhost.localdomain SSH: 5681

psyBNC: 5682

I dont know who bare@ubersource.net is .Is that a mail sent by the

system automatically. Can anyone help me get my system back on track? Thanks in advance

Re: weird errors

U.SivaKumar_2 — Mon, 20 May 2002 05:28:49 GMT

hi,
There are reasons to think that Denial of service type of attack might have been carried out in your server making the following parameter to overflow.
file-max
Just check the value of that parameter currently.
#cat /proc/sys/kernel/file-max
if it shows less that 1024 then increase the value.
#echo "4096" >/proc/sys/kernel/file-max
and reboot the server.

regards,
U.SivaKumar

topic weird errors in Operating System - Linux

weird errors

Re: weird errors