Vagrant VM for vService development on openSUSE Leap 15.5 (aarch64) with SLURM and Nomad

Overview

This repository provides a Vagrant configuration for setting up an openSUSE Leap 15.5 (aarch64) virtual machine using QEMU. The VM includes a fully configured SLURM workload manager, Nomad, and other necessary dependencies compatible for vService development.

Requirements

Before running this setup, ensure you have the following installed on your host machine:

• Vagrant
• QEMU
• Vagrant QEMU Provider

Setup Instructions

1. Clone the repository

   git clone ...

2. Start the Vagrant machine:

   vagrant up

   This will provision the VM, install necessary dependencies, and configure SLURM, Nomad, and Terraform.

3. Access the virtual machine:

   vagrant ssh

4. Verify installations:

   • Check if SLURM is running:

     scontrol show nodes

   • Check if Nomad is running:

     nomad node status

SLURM Configuration Overview

SLURM is installed and configured with the following key settings:

• MUNGE authentication is enabled to ensure secure communication.
• SLURM control daemon (slurmctld) is enabled to manage job scheduling.
• SLURM compute daemon (slurmd) is set up for node execution.
• Configuration files (slurm.conf, cgroup.conf) are provided via the Vagrant synced folder.
• Systemd services for slurmctld and slurmd are installed and enabled.

Nomad Configuration Overview

Nomad is installed with the following key settings:

• SSL certificates are configured to secure communication.
• Nomad service is installed and enabled via systemd.
• Bootstrap ACL process is performed to initialize authentication.
• Environment variables for Nomad access (NOMAD_ADDR, NOMAD_TOKEN) are set up.
• Configuration files (nomad.hcl, nomad.service, and certificates) are provided via the Vagrant synced folder.

Environment Variables Setup

After provisioning, the following environment variables are automatically set in /home/vagrant/.bashrc:

export NOMAD_ADDR="https://127.0.0.1:4646"
export NOMAD_CACERT="/etc/nomad.d/certs/nomad-ca.pem"
export NOMAD_TOKEN="<your-generated-token>"
export TF_VAR_nomad_server_url="https://127.0.0.1:4646"
export TF_VAR_nomad_secret_id="$NOMAD_TOKEN"
export TF_VAR_nomad_ca_cert="/etc/nomad.d/certs/nomad-ca.pem"
export TF_VAR_nomad_cli_cert="/etc/nomad.d/certs/nomad-server.pem"
export TF_VAR_nomad_cli_key="/etc/nomad.d/certs/nomad-server.key"

Notes

• The VM provisions automatically on vagrant up.

• To destroy the VM, use:

  vagrant destroy -f

• If changes are made to the configuration, reload the VM with:

  vagrant reload --provision