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Building the prometheus-slurm-exporter snap

Packaging and delivering the prometheus-slurm-exporter as a snap provides users of prometheus-slurm-exporter a hardened, streamlined, and idempotent experience when consuming this software. See snapcraft for more information on snaps.

Prereqs

  • snapcraft 
    sudo snap install snapcraft --classic
  • lxd 
    sudo snap install lxd

Build

From the root of this project, build the snap:

snapcraft --use-lxd

Once the snap build has completed, list the current working directory to see the resultant snap artifact.

$ ls -la *.snap
-rw-r--r-- 1 bdx bdx 5562368 Aug 16 18:19 prometheus-slurm-exporter_0.11-1-g01dd959_amd64.snap

Install locally built snap

sudo snap install prometheus-slurm-exporter_`git describe --tags`_amd64.snap --classic --dangerous
  • --classic - this snap uses classic confinement to allow it to find the slurm commands in the system.
  • --dangerous - because we are installing this snap from a local resource and sha can't be verified by the snapstore.

Verify install

Use ps to verify the process is running.

$ ps aux | grep prometheus | head -1
root     2271391  0.0  0.0 1453596 14012 ?       SLsl 18:32   0:00 /snap/prometheus-slurm-exporter/x1/bin/prometheus-slurm-exporter

Use netstat to verify that the installed prometheus-slurm-exporter snap process is listening on port 8080.

$ sudo netstat -peanut | grep prometheus
tcp6       0      0 :::8080                 :::*                    LISTEN      0          15042010   2271391/prometheus-slurm-exporter

Lastly, curl the metrics endpoint.

$ curl 127.0.0.1:8080/metrics
# TYPE slurm_cpus_total gauge
slurm_cpus_total 8
# HELP slurm_nodes_alloc Allocated nodes
# TYPE slurm_nodes_alloc gauge
slurm_nodes_alloc 0
# HELP slurm_nodes_comp Completing nodes
# TYPE slurm_nodes_comp gauge
slurm_nodes_comp 0
# HELP slurm_nodes_down Down nodes
# TYPE slurm_nodes_down gauge
slurm_nodes_down 0
# HELP slurm_nodes_drain Drain nodes
# TYPE slurm_nodes_drain gauge
slurm_nodes_drain 0
# HELP slurm_nodes_err Error nodes
# TYPE slurm_nodes_err gauge
slurm_nodes_err 0
# HELP slurm_nodes_fail Fail nodes
# TYPE slurm_nodes_fail gauge
slurm_nodes_fail 0
# HELP slurm_nodes_idle Idle nodes
# TYPE slurm_nodes_idle gauge
slurm_nodes_idle 1

... 

# TYPE slurm_scheduler_backfilled_jobs_since_start_total gauge
slurm_scheduler_backfilled_jobs_since_start_total 0
# HELP slurm_scheduler_cycle_per_minute Information provided by the Slurm sdiag command, number scheduler cycles per minute
# TYPE slurm_scheduler_cycle_per_minute gauge
slurm_scheduler_cycle_per_minute 1
# HELP slurm_scheduler_dbd_queue_size Information provided by the Slurm sdiag command, length of the DBD agent queue
# TYPE slurm_scheduler_dbd_queue_size gauge
slurm_scheduler_dbd_queue_size 0
# HELP slurm_scheduler_last_cycle Information provided by the Slurm sdiag command, scheduler last cycle time in (microseconds)
# TYPE slurm_scheduler_last_cycle gauge
slurm_scheduler_last_cycle 40
# HELP slurm_scheduler_mean_cycle Information provided by the Slurm sdiag command, scheduler mean cycle time in (microseconds)
# TYPE slurm_scheduler_mean_cycle gauge
slurm_scheduler_mean_cycle 481
...

To uninstall the prometheus-slurm-exporter snap:

sudo snap remove prometheus-slurm-exporter