![]() Here an example to assign the role to a standard user: This could be the Vitual Machine User Login role, for normal users, or the Virtual Machine Administrator Login, for system administrators. To be able to access the VM, the last thing to do is to assign an RBAC role to allow the user to login. – sed -i –follow-symlinks “s/HOME=.*/HOME=\/shared\/home/g” /etc/default/useradd – useradd -m -d /home/slurm –gid 11100 –uid 11100 slurm – chown -R munge.munge /etc/munge/ /var/log/munge/ – cp /shared/apps/slurm/munge.key /etc/munge – mount -t nfs .net:/nfsshares2960c680b0a1578/shared /shared -o vers=4,minorversion=1,sec=sys – sed “s/After=multi-user.target//g” /lib/systemd/system/rvice > /etc/systemd/system/rvice – echo “\nAfter=rvice” > /etc/systemd/system//nf Additionally note how the default home directory for new users has been changed to /shared/home and use of NFS for home directories enabled. As the extension does not currently support AlmaLinux it has been installed using Cloud Init referencing the RHEL 8 RPMs. Typically to enable AAD auth for Linux we would ensure the VM has a System Assigned Managed Identity and add the AADSSHLoginForLinux extension. The /shared folder is also mounted to provide access to the shared home folders. To interact with the Slurm cluster it should have Slurm and Munge installed with configurations matching your Slurm cluster. Id: ‘$/subnets/AzureBastionSubnet’Ģ) Login Node, again a standard virtual machine deployment. The OS used for all VMs is the AlmaLinux 8.5 HPC image.ġ) Azure Bastion, this is a typical deployment of Azure Bastion with the only additional considerations being to ensure it is the Standard SKU and that enableTunneling is set to true. This solution uses an existing Azure AD Tenant and very standard deployments of CycleCloud 8.2, Azure Files NFS (to provide a persistent /shared folder), a Login Node (more details later) and Azure Bastion (Standard SKU). AAD authentication can improve the security to access our environment by enabling the possibility to use conditional access enabling for example multi-factor authentication before being able to use SSH. ![]() Once logged into the Login Node, the CycleCloud provisioned user account and ssh keys will guarantee authentications to the scheduler and compute nodes. Summarising, we will use the native Azure AD Linux authentication to access the Login Node through the Azure Bastion host, using a temporal, provisioned ssh key. We also utilise the recent Azure Bastion native client support feature to provide remote access to the Login Node over the public internet. ![]() With CycleCloud, users can provision infrastructure for HPC systems, deploy familiar HPC schedulers, and automatically scale the infrastructure to run jobs efficiently at any scale.Īs enterprises increasingly move to using Azure Active Directory for their authentication needs this blog explores how Azure AD and OpenSSH certificate-based authentication may be used to provide authentication to a Slurm cluster. Azure Compute > Authenticating to an Azure CycleCloud Slurm cluster with Azure Active DirectoryĪzure CycleCloud is an enterprise-friendly tool for orchestrating and managing High Performance Computing (HPC) environments on Azure.
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