[Fedora-directory-users] Too many FDS open

Fri Feb 27 15:06:41 UTC 2009

Sorry didn't see the second question.

net.ipv4.tcp_keepalive_time = 3600

-Kevin

-----Original Message-----
From: fedora-directory-users-bounces at redhat.com
[mailto:fedora-directory-users-bounces at redhat.com] On Behalf Of Zona,
Kevin
Sent: Friday, February 27, 2009 10:05 AM
To: General discussion list for the Fedora Directory server project.
Subject: RE: [Fedora-directory-users] Too many FDS open

In the IDM console GUI for the Directory server, I change the "Idle
Timeout" on the Performance tab under the Configutation tab.  After
typing that sentence I wish I had found it somewhere in a command
line...

-Kevin

-----Original Message-----
From: fedora-directory-users-bounces at redhat.com
[mailto:fedora-directory-users-bounces at redhat.com] On Behalf Of Chavez,
James R.
Sent: Thursday, February 26, 2009 11:20 AM
To: General discussion list for the Fedora Directory server project.
Subject: RE: [Fedora-directory-users] Too many FDS open

Thanks, I think that may be our issue. Can I ask what parameters you set
to accomplish this?
And also what is your "net.ipv4.tcp_keepalive_time" set to?

Thanks again
James

We had the same problem.  We set the idle timeout, and it was fixed.  By
default it doesn't timeout connections.  We are only doing around 4K
transactions a minute, but the idle connections would constantly grow to
1024.  Once putting in the timeout we maintain only about 30 idle at a
time.  We set our limit to 60 seconds.

-Kevin

-----Original Message-----
From: fedora-directory-users-bounces at redhat.com
[mailto:fedora-directory-users-bounces at redhat.com] On Behalf Of Chavez,
James R.
Sent: Thursday, February 26, 2009 9:24 AM
To: General discussion list for the Fedora Directory server project.
Subject: RE: [Fedora-directory-users] Too many FDS open

-----Original Message-----
From: fedora-directory-users-bounces at redhat.com
[mailto:fedora-directory-users-bounces at redhat.com] On Behalf Of
sigid at JINLab
Sent: Thursday, February 26, 2009 12:43 AM
To: General discussion list for the Fedora Directory server project.
Subject: Re: [Fedora-directory-users] Too many FDS open

Chavez, James R. wrote:
> Hello Rich, list,
> 
> 
> Earlier today we started getting this error in our FDS error log 
> repeatedly. Obviously connections were being refused at this point. I 
> had to restart the directory server for the server to function again.
> Prior to releasing this box into production I did set the parameters 
> according to the Installation guide specifications. The output of 
> "ulimit -n" is 8192. The output of "sysctl -p" is below.(I increased 
> fs.file-max from 64000)Does anything look off?
> net.ipv4.tcp_syncookies = 1
> net.ipv4.tcp_keepalive_time = 300
> fs.file-max = 128000
> net.ipv4.ip_local_port_range = 1024 65000
> 
> I also changed the setting in the config from
> nsslapd-maxdescriptors: 1024 to
> nsslapd-maxdescriptors: 8192
> 
> Is there a way to tweak these settings so that this will not happen in

> the future?
> This is a dedicated consumer or read only replica. 
> Directory size is roughly 20,000 users.
> We are running FC9 and FDS 1.1.1-3.
> We are lacking in RAM but look to improve on that shortly.
> 
> I do see on the web past posts to this list regarding this error, I am

> currently looking through them. Is there anyone out there that has 
> experienced this and gotten past it?
> 
> Thanks
> James
> 
> [25/Feb/2009:13:30:08 -0600] - Not listening for new connections - too

> many fds open
> [25/Feb/2009:13:30:08 -0600] - Listening for new connections again
> [25/Feb/2009:13:30:08 -0600] - Not listening for new connections - too

> many fds open
> [25/Feb/2009:13:30:08 -0600] - Listening for new connections again

Is your client using windows OS? is there any posibilities that it could
be virus replicating and distributing it self into networks?
If storing file on domain/networks using FDS for authentication, the
frequently authentication process should cause the "too many fds open".

--

We are using all Linux clients. I would not think it would be virus
related. This implementation is actually replacing Windows.

This box is the authentication source for all the Linux clients.
What effect if any does replication have on fds or file descriptors..

Thanks
James

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Ahh, I think I found it for the idle connections.
Thanks for the pointer, I appreciate it.

James

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