21.2.2 Mounting an NFS File System

The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.

21.2.2 Mounting an NFS File System

To mount an NFS file system on a client:

Install the nfs-utils package:
```
# yum install nfs-utils
```

Use showmount -e to discover what file systems an NFS server exports, for example:

# showmount -e host01.mydom.com
Export list for host01.mydom.com
/var/folder 192.0.2.102
/usr/local/apps *
/var/projects/proj1 192.168.1.0/24 mgmtpc

Use the mount command to mount an exported NFS file system on an available mount point:
```
# mount -t nfs -o ro,nosuid host01.mydoc.com:/usr/local/apps /apps
```
This example mounts /usr/local/apps exported by host01.mydoc.com with read-only permissions on /apps. The nosuid option prevents remote users from gaining higher privileges by running a setuid program.
By default, mount assumes NFS v4. To mount an NFS v3 volume (the default in Oracle Linux 5), use the following mount options:
```
-o vers=3,mountproto=tcp
```
To configure the system to mount an NFS file system at boot time, add an entry for the file system to /etc/fstab, for example:
```
host01.mydoc.com:/usr/local/apps      /apps      nfs      ro,nosuid  0 0
```

For more information, see the mount(8), nfs(5), and showmount(8) manual pages.