[Fedora-directory-users] Too many FDS open

[Chavez, James R.]

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

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