[Info-vax] New installment in The OpenVMS Consultant: Shutdowns using STARTUP.COM

[Jan-Erik Söderholm]

Den 2020-12-28 kl. 13:15, skrev geze... at rlgsc.com:
> On Monday, December 28, 2020 at 5:10:04 AM UTC-5, Chris Townley wrote:
>> On 27/12/2020 15:30, David Jones wrote:
>>> On Sunday, December 27, 2020 at 9:26:25 AM UTC-5, geze... at rlgsc.com wrote:
>>>> The latest installment of The OpenVMS Consultant has been posted.
>>>>
>>>> OpenVMS STARTUP.COM is far more than a tool for controlling system startup. It can also be used to accomplish a phased Shutdown of a complex environment.
>>>>
>>>> See http://www.rlgsc.com/blog/openvms-consultant/shutdown-using-startup.html
>>>>
>>>
>>> The biggest hazard to an orderly shutdown is that you terminal session goes when the network is shut off, leaving your system in a partially shutdown state.
>>> I changed my shutdown symbol from "@sys$system:shutdown ..." to "$SYSMAN SHUTDOWN NODE /minutes=..." (appending /auto/save as needed).
>>>
>> That is a good idea. I had this problem at work on development VAX and
>> Alpha, where the serial console terminals barely worked, so we had to
>> shutdown etc from terminal sessions (LAT or TCP/IP)
>>
>> Now, at home I will use this on my physical alpha - no need on the
>> virtual ones - they have a console courtesy of Putty
>>
>> Chris
> Chris,
> 
> Quite. Console access is less of an issue on Itanium and x64, where there is always access through the console subsystem.
> 
> An alternative approach on VAX/Alpha is to not shutdown the network service, but shutdown individual services.
> 
> - Bob Gezelter, http://www.rlgsc.com
> 

Weird discussion... I have never had any issues with a shutdown
or a reboot from a remote (telnet or ssh) session at all. As long
as you do not run SHUTDOWN.COM interactively.

We have a small COM file called REBOOT.COM:

$ type sys$manager:reboot.com
$IF F$MODE().NES."OTHER"
$THEN
$  RUN /DET /INP='F$ENVIRONMENT("PROCEDURE")' -
        /OUT=OPA0: /PRIV=ALL /USER=SYSTEM -
        SYS$SYSTEM:LOGINOUT
$ELSE
$  SET PROC/PRIV=ALL
$  ASS OPA0: SYS$COMMAND
$  @SYS$SYSTEM:SHUTDOWN 0 SHUTDOWN YES YES LATER YES NONE
$  WAIT 08:00
$ENDIF

Just run it and it will run a detached reboot. A minor update
to do a shutdown without automatic reboot of course.

And if you like:

$ sh sym reboot
   REBOOT == "@sys$manager:reboot.com"
$

Another way, if you have multiple hosts and have LAT running, is
to connect from another system using SET HOST/LAT. LAT is up long
enough to have the system shutting down automatically even after
that you have lost the terminal connection.

This is on Alpha and yes, we also have access to the consoles.