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| [[Main Page|Home]] > [[Ubuntu]] > [[Ubuntu HPC setup with slurm and linux containers]] > [[NFS client setup on compute nodes]]
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| = Mounting NFS on Cluster Nodes =
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| This section explains how to mount the shared /export directory on all compute nodes, login node, and the master node in a Slurm cluster.
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| == 1. For Compute Nodes (Bare Metal or VMs) ==
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| === a. Install NFS Client Packages ===
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| <pre> apt install -y nfs-common </pre>
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| === b. Create Mount Point ===
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| <pre> mkdir /export </pre>
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| === c. Verify NFS Export from Master ===
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| <pre> showmount -e master # OR showmount -e master-ib </pre>
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| === d. Configure Persistent Mount in /etc/fstab ===
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| Add the following line to /etc/fstab:
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| <pre> <master-node-name>:/export /export nfs defaults,nofail,soft,bg 0 0 </pre>
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| '''Notes:'''
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| * Use nofail to allow booting even if NFS is not available.
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| * Use soft and bg to ensure mounting happens in the background and retries without blocking the boot.
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| * If using InfiniBand, replace <master-node-name> with the corresponding InfiniBand hostname (e.g., master-ib).
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| * You can optionally add the async mount option to improve performance (at the cost of consistency), depending on your HPC workload requirements.
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| === e. Mount All Entries ===
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| <pre> mount -a </pre>
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| == 2. For Containers (slurm-login1, slurm-master) on Infra Node ==
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| Since the login node and master node are LXD containers running on the infra (NFS) node, we do not use NFS clients to mount /export. Instead, use LXD disk device passthrough from the host (infra node):
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| '''Steps (Run from Infra Node):'''
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| === a. Enable Privileged Container ===
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| <pre> lxc config set slurm-login1 security.privileged true </pre>
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| === b. Restart Container ===
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| <pre> lxc stop slurm-login1 lxc start slurm-login1 </pre>
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| === c. Attach /export/home to Container ===
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| <pre> lxc config device add slurm-login1 export_home disk source=/export/home path=/export/home </pre>
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| Repeat similar steps for slurm-master and any other container that needs access to /export/home.
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| '''Note:'''
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| * This ensures that containers running on the infra node share the same /export/home directory via direct host path mapping instead of NFS mount.
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| * This method is faster and avoids networking overhead between containers and host.
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| [[Main Page|Home]] > [[Ubuntu]] > [[Ubuntu HPC setup with slurm and linux containers]] > [[NFS client setup on compute nodes]]
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