On CentOS

Installing the NFS Server

Log in to the storage node as an administrator and run the following command to install the NFS server:
```
yum install nfs-utils -y
```
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 vi /etc/exports command to add the content below to the end of the 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

Run the following command to check whether rpcbind is started:

systemctl status rpcbind

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

[root@centos ~]# systemctl status rpcbind
● rpcbind.service - RPC bind service
   Loaded: loaded (/usr/lib/systemd/system/rpcbind.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2021-01-15 15:54:44 CST; 28s ago
 Main PID: 63008 (rpcbind)
   CGroup: /system.slice/rpcbind.service
           └─63008 /sbin/rpcbind -w


Jan 15 15:54:44 centos39 systemd[1]: Starting RPC bind service...
Jan 15 15:54:44 centos39 systemd[1]: Started RPC bind service.

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

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

systemctl status nfs

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

[root@centos ~]# systemctl status nfs-server.service
● nfs-server.service - NFS server and services
   Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; enabled; vendor preset: disabled)
  Drop-In: /run/systemd/generator/nfs-server.service.d
           └─order-with-mounts.conf
   Active: active (exited) since Fri 2021-01-15 15:56:15 CST; 8s ago
 Main PID: 67145 (code=exited, status=0/SUCCESS)
   CGroup: /system.slice/nfs-server.service


Jan 15 15:56:15 centos39 systemd[1]: Starting NFS server and services...
Jan 15 15:56:15 centos39 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:
```
[root@centos ~]# cat /var/lib/nfs/etab
/data/atlas_dls * (rw, ... displays the configured permission.)
```

Installing the NFS Client

Log in to another server as an administrator and run the following command to install the NFS client:
```
yum install nfs-utils -y
```

Run the following commands to start rpcbind:

systemctl restart rpcbind.service
systemctl enable rpcbind

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

Parent topic: Installing NFS