SLURM Standalone on OpenStack with Auto-Configure

Overview

This workflow demonstrates the creation of a standalone slurm cluster on Openstack which utilises Flight Solo to automatically configure the node upon boot. It is assumed that you have a flight solo image on openstack, if not see the documentation here.

Prepare Network

Preparing the network, router and subnet is out of scope for this documentation, so it is assumed that this is already done. See the Openstack documentation for more information.

1. Create a Security Group with
   1. Name: autostandalone1-sg
   2. Description: "Security group for automatic standalone cluster"
   3. Ingress Rules
      1. "SSH", remote: "CIDR", CIDR: "0.0.0.0/0"
      2. "HTTP", remote: "CIDR", CIDR: "0.0.0.0/0"
      3. "HTTPS", remote: "CIDR", CIDR: "0.0.0.0/0"
      4. "All TCP", remote: "Security Group", from this security group
      5. "All UDP", remote: "Security Group", from this security group
2. Create a keypair with
   1. Key Pair Name: autostandalone-key
   2. Key Type: SSH Key

Launch the instance

1. Click Launch Instance.
   1. Details:
      1. Instance Name: auto-slurm
      2. Count: 1
   2. Source:
      1. Volume Size: 20
      2. Image: imported Flight Solo image
   3. Flavour: m1.medium
   4. Networks: your network
   5. Configuration
      1. Customisation script

         #cloud-config
         write_files:
         - content: |
             LABEL="standalone1"
             AUTOPARSEMATCH="auto"
             PROFILE_ANSWERS='{"cluster_type": "openflight-slurm-standalone",  "cluster_name": "my-cluster",  "default_username": "flight",  "default_password": "0penfl1ght"}'
             AUTOAPPLY="standalone: all-in-one"
           path: /opt/flight/cloudinit.in
           permissions: '0600'
           owner: root:root
         users:
           - default
         

2. Press Launch Instance
3. Wait for the node to finish building, and associate it with a floating ip from the node's drop down menu.

Checking it works

Congratulations! You now have a Slurm Standalone Cluster!

Once the node has come up it will automatically configure and set up the slurm profile on itself (see flight profile list ), with no more human interaction required before it is ready to run jobs.

What you can do next is: - Seamlessly access the cluster via the Flight Web Suite in a web browser by visiting the Floating IP you assigned it. - Run some slurm jobs.