strigger

Manage Slurm cluster event triggers

TLDR

Register a trigger for system events

$ strigger --set --primary_slurmctld_failure -p [path/to/script]

$ strigger --set -j [job_id] -f -p "[path/to/script] [args]"

View active triggers

$ strigger --get

View triggers for specific job

$ strigger --get -j [job_id]

Clear a trigger

$ strigger --clear [trigger_id]

$ strigger --set --down --flags=PERM -p [path/to/script]

SYNOPSIS

strigger --set [OPTIONS...]strigger --get [OPTIONS...]strigger --clear [OPTIONS...]

strigger manages event triggers in Slurm that automatically execute scripts when specific events occur. Triggers can respond to node state changes, job completions, system failures, and other cluster events. The daemon checks triggers approximately every 15 seconds.Triggered programs execute on the slurmctld node with a 5-minute timeout. By default, triggers are removed after execution unless marked permanent with --flags=PERM.

PARAMETERS

--set

Register a new trigger

--get

Display registered triggers

--clear

Remove a trigger

-j, --jobid id

Target specific job

--node name

Target specific node

-p, --program path

Script to execute when trigger fires

--offset seconds

Timing adjustment (negative = before event)

--flags flags

Trigger flags (PERM = permanent)

-u, --user name

Filter by trigger creator

-v, --verbose

Detailed output

-q, --quiet

Suppress non-critical errors

EVENT TYPES

Node events: --down, --up, --drained, --draining, --idle, --failJob events: --fini, --timeSystem events: --primaryslurmctldfailure, --primaryslurmdbdfailure, --reconfig

INSTALL

sudo apt install slurm-client

CAVEATS

Only SlurmUser (typically root) can set triggers. Programs run on slurmctld node, not compute nodes. Triggers must be re-registered after execution unless permanent. Scripts must be executable and accessible from slurmctld host.

HISTORY

strigger is part of Slurm, developed at Lawrence Livermore National Laboratory starting in 2002. Event triggers allow automated responses to cluster events for monitoring, alerting, and workflow automation. Slurm is now maintained by SchedMD.