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On Thu, Jul 01, 2004 at 05:18:29PM +0100, Juerg.VonBueren@xxxxxxx wrote:
> We are running into trouble with more than 100 virtual tunnel devices .
> The reported problem is as follows:
>
> Reported Failure in /var/log/syslog
> Jul 1 06:30:19 1100PRVC001 openvpn[15520]: OpenVPN 1.5.0 i386-rpm-linux
> [SSL] [LZO] [PTHREAD] built on Mar 4 2004
> Jul 1 06:30:19 1100PRVC001 openvpn[15520]: Note: Cannot ioctl TUNSETIFF
> tun: Too many open files in system (errno=23)
> Jul 1 06:30:19 1100PRVC001 openvpn[15520]: Note: Attempting fallback to
> kernel 2.2 TUN/TAP interface
> Jul 1 06:30:19 1100PRVC001 openvpn[15520]: Cannot allocate TUN/TAP dev
> dynamically
> Jul 1 06:30:19 1100PRVC001 openvpn[15520]: Exiting
>
> max file-handles ist set to 16384
root@var:~# ps ax | grep openvpn | wc -l
309
(didn't try more)
> Distribution ist Debian Woody 3.0 r2 (Kernel 2.4.18)
Debian sid, openvpn 1.6.0, kernel 2.6.7 So not exactly the same thing,
but lets see in one of my servers...
agi@whitman:~$ ps ax | grep openv | wc -l
109
(and starts failing)
Debian woody, openvpn1.6.0, kernel 2.4.26, so the problem is
a) the kernel version
b) something in woody
But in any case not openvpn.
> openvpn 1.5.0-2 (rpm-Package, converted via alien to
> deb-package)
Humm well, that's not the best choice IMHO to install openvpn in a woody
box. Try adding this to sources.list:
deb http://www.backports.org/debian stable openvpn
> Is there any known Limitation to 100 TUN-Devices or how can we break that
> limitation?
Try switching to 2.6.x kernels?
--
Alberto Gonzalez Iniesta | BOFH excuse #330:
agi@(agi.as|debian.org) | quantum decoherence
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