topic Re: pty fork failed in Operating System - HP-UX

pty fork failed

點燃 — Tue, 07 Apr 2009 01:51:51 GMT

Hi
While I'm trying to login to an hp-ux box via ssh, getting this error

5425.01 ptyfork failed in ptysystem: No such file or directory
4.0.6-03[17830]: pty fork failed
---------------------------------
can anyone help?

thanks

Re: pty fork failed

Jeeshan — Tue, 07 Apr 2009 02:33:53 GMT

check this thread

http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=994275

Re: pty fork failed

T G Manikandan — Tue, 07 Apr 2009 07:11:21 GMT

can you check the value of nproc with kernel as well as the number of current running processes on the server.

Re: pty fork failed

點燃 — Tue, 07 Apr 2009 07:22:16 GMT

SYSTEM TABLES REPORT Users= 68

System Table Available Used Utilization High(%)
--------------------------------------------------------------------------------
Proc Table (nproc) 4116 784 19 19
File Table (nfile) 8192 3011 37 37
Shared Mem Table (shmmni) 220 23 10 10
Message Table (msgmni) 256 9 4 4
Semaphore Table (semmni) 1024 38 4 4
File Locks (nflocks) 512 71 14 14
Pseudo Terminals (npty) 120 59 49 49
Buffer Headers (nbuf) na 66708 na na

# kmtune -q nproc
Parameter Current Dyn Planned Module Version
===============================================================================
nproc 4116 - (20+8*MAXUSERS)

Re: pty fork failed

T G Manikandan — Tue, 07 Apr 2009 07:32:35 GMT

ssh -vvv

provide more debug output. also, are you using normal ssh clients or any client like cygwin?

Re: pty fork failed

Ganesan R — Tue, 07 Apr 2009 07:32:57 GMT

Hi,

You might have reached the maximum pty pseduo devices configured on the system.

Increase the following kernel parameter through SAM.

npty
nstrpty
nstrtel