Too many open files

[chad kellerman]

Greetings,

     I have a strange problem.  I have a combination web server /name server 
that I upgrade from a RedHat 6.2 server running a 2.2.19 Kernel with Bind 
8.2.3 to a RedHat 7.3 server running a 2.4.19 Kernel with Bind 8.3.3.

     The ulimits match.  I have approximately 500 ips bound to the server.  
Running 6.2 the name server ran like a champ.

  But now When I start the name server after about the 494 listening on [ip 
address] in named.log I get:

21-Feb-2003 14:08:13.349 default: notice: fcntl(fd, F_DUPFD, 20): Too many 
open files
21-Feb-2003 14:08:13.349 default: error: socket(SOCK_DGRAM): Too many open 
files
21-Feb-2003 14:08:13.349 default: notice: deleting interface [$ipaddr].53
21-Feb-2003 14:08:13.349 default: notice: fcntl(fd, F_DUPFD, 20): Too many 
open files
21-Feb-2003 14:08:13.349 default: error: socket(SOCK_DGRAM): Too many open 
files


The only way to stop this is to put the listening on directive in named.conf.

I did not have to do this with an older version of the Kernel, Bind, and 
RedHat.  So why is this happening now.


I have raised all of the ulimits to higher numbers even increase 
/proc/sys/fs/file-max

but still the errors happen.

Can anyone point me in the right direction to fix this issue?

Thanks, You help is greatly appreciated.

Sincerely,
Chad