Re: [HTCondor-users] Expression in STARTD_NOCLAIM_SHUTDOWN?

[Todd Tannenbaum <tannenba@xxxxxxxxxxx>]

On 12/12/2025 11:19 AM, Ram Ban wrote:

Hi all,

I am using STARTD_NOCLAIM_SHUTDOWN to stop machines when not used for 200 sec.

Now I have use case where I want this value to be max(uptime -1hr, 200sec) for vanilla universe.

Basically I want to keep machine up for alteast 1hr and then want to terminate if not used for 200 sec. Is there any way of doing this?

Thanks and regards 

Raman

    Hi Raman,
    
    STARTD_NOCLAIM_SHUTDOWN attempts to make the simple things simple,
    but there are other config knobs that give you more flexibility and
    the cost of complexity. Assuming your startd is configured with one
    partitionable slot (this is the default - you would need to go out
    of your way to get something different), then I think the below 2
    config lines will do what you want.   One line tells the startd when
    to exit, and then the second line tells the master to exit when the
    startd exits.  You may want to consult the manual to read about the
    STARTD_LATCH_EXPRS knob and the DAEMON_SHUTDOWN knob.
    
    Hope this helps,
    Todd
# Tell the startd to shutdown when the partitionable slot
# says that NumDynamicSlots has been zero (i.e. no jobs) for more than 200 
# seconds, and the startd itself has been running for more than 1hr.
# Note: NumDynamicSlotsTime is published because by default 
# the knob SYSTEM_STARTD_LATCH_EXPRS = NumDynamicSlots

STARTD.DAEMON_SHUTDOWN = PartitionableSlot && \
	((CurrentTime - DaemonStartTime) > (60*60)) && \
	(NumDynamicSlots == 0) && \
	((CurrentTime - NumDynamicSlotsTime) > 200) 
#
# Shutdown the master if the startd exits.  Note that if
# STARTD_StartTime is zero, that the startd is not currently running.
#

MASTER.DAEMON_SHUTDOWN = (STARTD_StartTime =?= 0)