Ubuntu OS

A network file system (NFS) allows computers on a network to share resources. In cluster scheduling scenarios, environments with NFSs are required to ensure the normal running of training or inference jobs. An NFS can be installed on a server or client as required.

Installing NFS on a Server

Log in to the storage node as an administrator and run the following command to install the NFS server:
```
apt install -y nfs-kernel-server
```
Fix the NFS-related ports and configure a firewall for the ports as required.
Run the following commands to create a shared directory (for example, /data/atlas_dls) and change the directory permission:
```
mkdir -p /data/atlas_dls
chmod 750 /data/atlas_dls/
```
Run the following command to add the content below to the end of the /etc/exports file to configure the allowed IP address as required and harden related permission settings:
```
/data/atlas_dls service_IP_address (with necessary permissions)
```

Run the following commands to start rpcbind:

systemctl restart rpcbind.service
systemctl enable rpcbind.service

Run the following command to check whether rpcbind is started:

systemctl status rpcbind.service

If the following information is displayed, the service is running properly:

● rpcbind.service - RPC bind portmap service
   Loaded: loaded (/lib/systemd/system/rpcbind.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2024-01-08 16:39:03 CST; 6 days ago
     Docs: man:rpcbind(8)
 Main PID: 2952 (rpcbind)
    Tasks: 1 (limit: 29491)
   CGroup: /system.slice/rpcbind.service
           └─2952 /sbin/rpcbind -f -w


Jan 08 16:39:03 ubuntu-211 systemd[1]: Starting RPC bind portmap service...
Jan 08 16:39:03 ubuntu-211 systemd[1]: Started RPC bind portmap service.

After rpcbind is started, run the following commands to start the NFS service:
```
systemctl restart nfs-server.service
systemctl enable nfs-server.service
```

Run the following command to check whether the NFS service is started:

systemctl status nfs-server.service

If the following information is displayed, the service is running properly: If the NFS service fails to be started, rectify the fault by referring to Failed to Execute df -h and Failed to Start NFS.

● nfs-server.service - NFS server and services
   Loaded: loaded (/lib/systemd/system/nfs-server.service; enabled; vendor preset: enabled)
   Active: active (exited) since Fri 2024-01-08 16:39:03 CST; 6 days ago
 Main PID: 3220 (code=exited, status=0/SUCCESS)
    Tasks: 0 (limit: 29491)
   CGroup: /system.slice/nfs-server.service


Jan 08 16:39:03 ubuntu-211 systemd[1]: Starting NFS server and services...
Jan 08 16:39:03 ubuntu-211 exportfs[3181]: exportfs: /etc/exports [1]: Neither 'subtree_check' or 'no_subtree_check' specified for export "*:/data/atlas_dls".
Jan 08 16:39:03 ubuntu-211 exportfs[3181]:   Assuming default behaviour ('no_subtree_check').
Jan 08 16:39:03 ubuntu-211 exportfs[3181]:   NOTE: this default has changed since nfs-utils version 1.0.x
Jan 08 16:39:03 ubuntu-211 systemd[1]: Started NFS server and services.

Run the following command to check the mounting permission of the shared directory (for example, /data/atlas_dls):
```
cat /var/lib/nfs/etab
```
If the following information is displayed, the service is running properly:
```
/data/atlas_dls * (rw, ... displays the configured permission.)
```

Installing NFS on a Client

apt install -y nfs-common

Parent topic: Installing NFS