Ubuntu HPC NFS server setup on infra node

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NFS Configuration on Infra Node

This section describes how to create and share a directory using NFS for Slurm cluster clients. The shared folder will reside under /export, mounted from an LVM partition, and made accessible to all compute and service nodes via NFS.

1. Create and Mount LVM Partition

Create an ext4 LVM partition with the required space to be shared with clients.

Mount the created LVM partition on /export via UUID using /etc/fstab.

2. Create Base Directories

Create the home directory inside /export:

 mkdir -p /export/home 

You can later add other subdirectories like /export/apps for application binaries, or others as needed.

3. Install NFS Server Packages

 apt install -y nfs-kernel-server 

4. Configure NFS Exports

Open /etc/exports file and add the following entry:

 /export <private-subnet>(rw,sync,no_subtree_check) 

Example for private subnet 192.168.2.0/24:

 /export 192.168.2.0/24(rw,sync,no_subtree_check) 

Note:

We are exporting the entire /export directory, not just /export/home.

This gives flexibility to add new folders like /export/apps or others in the future.

If you're using InfiniBand, use the InfiniBand subnet instead of the Ethernet/private subnet in the export entry.

5. Apply Export Changes

 exportfs -a 

6. Restart the NFS Service

 systemctl restart nfs-kernel-server 

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