connect problems and telnet device driver missing

[B. Boxma]

Hello,

Our system is working for half a year without any problems. Today, we could not connect to our system for a while. After a few minutes, everything seemed normal and we could connect.
Some messages from our console:

inetd[811]: registrar/tcp: accept: File table overflow

telnetd[12987]: gethostbyaddr: !=

telnetd[12987]: Fatal error: Telnet device drivers missing: File table overflow.

Does anyone know if these messages are related and what this means?

[Frederic Soriano · Accepted solution]

Hi,

It seems that you have not enough file descriptors; have a look at kernel parameter (you can have a look at dmesg command output to see other error messages).

is actually calculated from the following parameters: nproc, maxusers, npty and nstrpty. Under HP-UX 11, there is also parameter nstrtel (number of telnet session device files).

So these messages are probably related to each other. Increase nfile (by tuning related parameters), or try to reduce the number of opened processes that use a lot of file descriptors; remember that each process owns at least 3 file descriptors (stdout, stdin and stderr).

I hope this helps.

Best regards.

Fred.

[B. Boxma]

Thanks, Fred.
You where right: too many files where open.