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Slurm

Install

Apply manifests

oc apply -k manifests/

Create munge secret key

oc -n slurm-system create secret generic munge-key --from-file=munge.key=<(dd status=none if=/dev/urandom bs=1 count=128)

Create image builds and build images

oc new-build --name munge --binary
oc new-build --name slurm --binary
oc new-build --name login --binary

oc start-build munge --from-dir=images/munge --follow --no-cache
oc start-build slurm --from-dir=images/slurm --follow --no-cache
oc start-build login --from-dir=images/login --follow --no-cache

Slurm job

#!/bin/bash
#SBATCH --nodes=1                # node count
#SBATCH --time=00:01:00          # total run time limit (HH:MM:SS)

sleep 10

Scale compute

$ oc scale -n slurm-system statefulset/compute --replicas=3

#!/bin/bash
#SBATCH --nodes=3                # node count
#SBATCH --time=00:01:00          # total run time limit (HH:MM:SS)

sleep 10

containerssh

oc new-project containerssh

Set your user ssh public key into the authentication app (hardcoded)

sed -i -e "s#ssh-rsa.*#$(cat ~/.ssh/id_rsa.pub)#" manifests/containerssh/authconfig/app.py

TODO: Automate or script this part Generate host key and create a secret for it

openssl rsa -in mykey.pem -pubout > mykey.pub
oc create secret generic -n containerssh  containerssh-hostkey --from-file=host.key=mykey.pem

$ oc apply -k manifests/containerssh
$ openssl genrsa | kubectl create secret generic -n containerssh containerssh-hostkey --from-file=host.key=/dev/stdin

Checks

Check thats pods in projects slurm-system and containerssh are up and running:

oc get pods -n containerssh
oc get pods -n slurm-system

You are ready for the demo and you can return to the main demo README

Login

$ oc get svc -n containerssh containerssh
NAME           TYPE           CLUSTER-IP      EXTERNAL-IP                                                               PORT(S)          AGE
containerssh   LoadBalancer   172.30.147.21   a9cf4fabd2d9b49659d8af106ea30536-1220395463.us-east-2.elb.amazonaws.com   2222:30036/TCP   47m

$ ssh -o HostKeyAlgorithms=+ssh-rsa -o PubkeyAcceptedAlgorithms=+ssh-rsa -p 2222 jason@a9cf4fabd2d9b49659d8af106ea30536-1220395463.us-east-2.elb.amazonaws.com
bash-5.1$