On Mon, Jan 10, 2000 at 10:31:51PM +0530, S.THOMAS wrote:
> Hi all,
> I am very sorry to post this mesg to firewall group. I am
> helpless.
You would be much better off bringing this up on one of the Linux
mailing lists. Since you are using RedHat 6.1, either [EMAIL PROTECTED]
or [EMAIL PROTECTED] would be appropriate. Other good sources
would be [EMAIL PROTECTED] or [EMAIL PROTECTED]
Be that as it may, I think I may be able to help you.
> Problem Defn:
> I am running a mail sever on Intel P-III with Redhat Linux-6.1. My
> server has 256 MB RAM ( I am ready to upgrade), 1500 users are using my
> sever. My average load on the server is 65- Telnet session and 50 Imap/Pop
> connecttions. In the peak hours i am getting irritating message as follws:
> libnet.so can not open shared object
> To many files open --- Very often
> segmentation fault etc..
> I hope all of u might have atleast come across such a situation. Please
> give me your advice to run my server without these errors. The load
> average is < 1 even in the peak hours.
You are probably running out of system wide inodes or file handles.
With that number of users and processes, I would think this highly likely.
Try this...
If you "cat /proc/sys/fs/file-max" you'll probably see something
like 4096. Double that by doing the following:
echo 8192 > /proc/sys/fs/file-max
If you "cat /proc/sys/fs/inode-max" you'll probably see something
like 8192 or maybe 16384 or something in that range. Set it to something
like 4 times the value of file-max, like this:
echo 32768 > /proc/sys/fs/inode-max
Now wait and see if that solves your peak hour problem. If it
does, add those two echo commands to your /etc/rc.d/rc.local file so
they will be set anytime you reboot.
> In this situation, pam deamon refused to the authentication and inet
> deamon refuses connection at port 23.
> I tried as much as possible tuning.. ( exept kernal recompilation)
You didn't say what kind of tuning you tried but that would
have made this even more off topic for a firewall list... :-)
> Note:
> The same problem was experienced with my old P-Pro(200) m/c and
> RH-Linux-5.2 also.
>
> With Best Regards,
> S.Thomas
> Network & Mail Administrator.
Mike
--
Michael H. Warfield | (770) 985-6132 | [EMAIL PROTECTED]
(The Mad Wizard) | (770) 331-2437 | http://www.wittsend.com/mhw/
NIC whois: MHW9 | An optimist believes we live in the best of all
PGP Key: 0xDF1DD471 | possible worlds. A pessimist is sure of it!
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