Setting up Open OnDemand

What is it?

Open OnDemand is a portal to run web applications to help add ease of use functionality to any Compute Cluster. It provides the following apps out of the box which I shall go through the configuration of using my trusty virtual TrinityX cluster on my file server.

Home directory browser with editor

File:FilesBrowser.png

Active Job Viewer

File:ActiveJobViewer.png

Job creator

File:JobCreator.png

Cluster Shell

File:WebTerminal.png

Remote Visualisation

File:RemoteDesktop1.png File:RemoteDesktop2.png

Install RPMs on Portal node

yum install centos-release-scl
yum install https://yum.osc.edu/ondemand/1.5/ondemand-release-web-1.5-1.el7.noarch.rpm
yum install ondemand
systemctl start httpd24-httpd

Configure The Portal Node

cp /etc/ood/config/ood_portal.yml /etc/ood/config/ood_portal.yml.orig
cat >> /etc/ood/config/ood_portal.yml << EOF
auth:
  - 'AuthType Basic'
  - 'AuthName "private"'
  - 'AuthBasicProvider ldap'
  - 'AuthLDAPURL "ldaps://trinityx:636/ou=People,dc=local,dc=cluster?uid"'
  - 'AuthLDAPGroupAttribute memberUid'
  - 'AuthLDAPGroupAttributeIsDN off'
  - 'RequestHeader unset Authorization'
  - 'Require valid-user'
EOF
cat >> /opt/rh/httpd24/root/etc/httpd/conf.modules.d/01-ldap.conf << EOF
# change the following LDAPLibraryDebug line to 1 if you get 500 (internal server) errors after login
LDAPLibraryDebug 0
EOF
/opt/ood/ood-portal-generator/sbin/update_ood_portal
systemctl try-restart httpd24-httpd.service httpd24-htcacheclean.service
mkdir -p /etc/ood/config/clusters.d/
echo > /etc/ood/config/clusters.d/my_cluster.yml << EOF
---
v2:
  metadata:
    title: "My Cluster"
  login:
    host: "trinityx.cluster"
  job:
    adapter: "slurm"
    cluster: "cluster"
    bin: "/usr/sbin/"
    conf: "/etc/slurm/slurm.conf"
    bin_overrides:
      sbatch: "/usr/bin/sbatch"
      squeue: "/usr/bin/squeue"
      scontrol: "/usr/bin/scontrol"
      scancel: "/usr/bin/scancel"
  batch_connect:
    basic:
      script_wrapper: |
        module purge
        %s
    vnc:
      script_wrapper: |
        module purge
        module add turbovnc websockify
        export WEBSOCKIFY_CMD="websockify"
        %s
EOF
mkdir /etc/ood/config/apps/bc_desktop -p
cat > /etc/ood/config/apps/bc_desktop/my_cluster.yml << EOF
---
title: "Remote Desktop"
cluster: my_cluster
attributes:
  bc_account:
    help: "this should be left blank"
  desktop:
    value: "mate"
  bc_vnc_idle:
    value: 180
  bc_vnc_resolution:
    required: true
    label: "Desktop Resolution"
    value:
  node_type: null
form:
  - bc_vnc_idle
  - desktop
  - bc_account
  - bc_num_hours
  - bc_num_slots
  - node_type
  - bc_queue
  - bc_vnc_resolution
  - bc_email_on_started
EOF
/opt/ood/ood-portal-generator/sbin/update_ood_portal
systemctl try-restart httpd24-httpd.service

Configure the compute node image

luna chroot compute
yum groupinstall xfce
yum install numpy
exit
luna osimage pack compute

Configure Modules for TurboVNC and websockify

todo

</syntaxhighlight>

OpenOnDemand

Contents