what is the command to halt the system arbitrary in HP-UX?

[julie_53]

As we know, this is a command "stop+A" in solaris to halt the system arbitrary . Is there a similar command in HPUX to halt the system arbitrary?

[Robert-Jan Goossens]

No, there is no simular command in HPUX

STOP+A will hold the kernel and gives you an OK> prompt on solaris.

On the other hand, you can acces the GSP with Ctrl+B and run re to reset the system.

Depends a bit on what you would like do.

Hope this helps,
Robert-Jan

[Alessandro Pilati]

A more difficult solution could be a program that intercepts the keyboard interrupts and when detects a particular sequence, does an action.
But natively there is noting similar to solaris STOP-A on a running hpux system.

Regards,
Alex

[julie_53]

Thanks, Robert. I just want to know if the system hang, how can I do?

[Ranjith_5]

Logon to GSP.

MP login: Admin
MP password:

* Your connection is via Telnet. For improved security this MP *
* now supports SSH-2. Telnet can be disabled via the SA command. *

(c)Copyright 2000 Hewlett-Packard Co., All Rights Reserved.

Welcome to
Superdome's Management Processor


Utility Subsystem FW Revision Level: 15.14



MP MAIN MENU:

CO: Consoles
VFP: Virtual Front Panel
CM: Command Menu
CL: Console Logs
SL: Show Event Logs
FW: Firmware Update
HE: Help
X: Exit Connection
MP> CM

Enter HE to get a list of available commands

(Use ^B to return to main menu.)



MP:CM>TC

TC command will reset the server with a crash dump which you can analyse later for troubleshooting.


Regards,
Syam

[Robert-Jan Goossens]

typo from gsp rs to reset and tc to reset the server with a crash dump.

Thanks Syam.

[julie_53]

thanks syam and Robert. But I found sometime when the system is hanging, such as IP address is not correct, the system can not boot up and when I type "Ctrl+B", the system is no response. and I have to push "TOC" button to restart the server. by the way, my server is HP9000/k380

[Robert-Jan Goossens]

Yes on a K-class the only option would be to use the TOC button.

Best regards,
Robert-Jan

[Ranjith_5]

Hi Julie,

Do you have any lan console port on your server? If yes configure IP to that and you can access the console through that. there is no reason for console getting hung during bootup. Any way if the system seems to be hanging during the service startups, you can do a CTRL & \ key combination to bipass the problem."^\"

Regards,
Syam

[julie_53]

so in that situation, for example, if the IP address is not corret, and the server can not boot up. I have to push the "TOC" button and then "break" when the system is in booting process. And then I can get a login console and can log in and do modification with the ip address and reboot the system. Am I right?

[Ranjith_5]

Jullie,

IP address problem shouldnt affect your system booting.

Regards,
Syam

[Robert-Jan Goossens]

in case of a bad ip you should have control over your server using the console.

http://www5.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000080061947

Above doc describes all possible toc on various hp/9000 servers.

Regards,
Robert-Jan

[julie_53]

Syam, it is a old machine. I think it has not lan console port and it's keyboard is connect to console. I will test "^\" command next time. thank syam !

[julie_53]

Thanks Robert and Syam ! your information is really very helpful to me!

[Torsten.]

Hi Julie,

btw, the CTRL B key combination on a K-class is available, when the key (power) switch on the front side of the box is in position "service".

T.

[Bill Hassell]

The K-series computers have no separate LAN connection for the processor ROMs. You must access the console using a 'real' terminal or connect a PC with an emu;ator to the console port. CTRL-B *only* works on the console port and *only* works when the keyswitch is turned all the way (clockwise) to the right. You can always login from the console as lomg as the system is still running.

Once you type CTRL-B, you'll see a CM> prompt which comes from the processor ROMs. But from this prompt, you are disconnected HP-UX. You have access to commands like RS (reset and reboot), TC (transfer of control to produce a total memory dump), CO to get back to HP-UX.